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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f931551baf
Add a low-level IB driver for QLogic PCIe adapters. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
185 lines
6.8 KiB
C
185 lines
6.8 KiB
C
/*
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* Copyright (c) 2006, 2007, 2008, 2009 QLogic Corporation. All rights reserved.
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* Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/* QSFP support common definitions, for ib_qib driver */
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#define QSFP_DEV 0xA0
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#define QSFP_PWR_LAG_MSEC 2000
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/*
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* Below are masks for various QSFP signals, for Port 1.
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* Port2 equivalents are shifted by QSFP_GPIO_PORT2_SHIFT.
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* _N means asserted low
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*/
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#define QSFP_GPIO_MOD_SEL_N (4)
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#define QSFP_GPIO_MOD_PRS_N (8)
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#define QSFP_GPIO_INT_N (0x10)
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#define QSFP_GPIO_MOD_RST_N (0x20)
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#define QSFP_GPIO_LP_MODE (0x40)
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#define QSFP_GPIO_PORT2_SHIFT 5
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#define QSFP_PAGESIZE 128
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/* Defined fields that QLogic requires of qualified cables */
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/* Byte 0 is Identifier, not checked */
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/* Byte 1 is reserved "status MSB" */
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/* Byte 2 is "status LSB" We only care that D2 "Flat Mem" is set. */
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/*
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* Rest of first 128 not used, although 127 is reserved for page select
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* if module is not "Flat memory".
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*/
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/* Byte 128 is Identifier: must be 0x0c for QSFP, or 0x0d for QSFP+ */
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#define QSFP_MOD_ID_OFFS 128
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/*
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* Byte 129 is "Extended Identifier". We only care about D7,D6: Power class
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* 0:1.5W, 1:2.0W, 2:2.5W, 3:3.5W
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*/
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#define QSFP_MOD_PWR_OFFS 129
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/* Byte 130 is Connector type. Not QLogic req'd */
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/* Bytes 131..138 are Transceiver types, bit maps for various tech, none IB */
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/* Byte 139 is encoding. code 0x01 is 8b10b. Not QLogic req'd */
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/* byte 140 is nominal bit-rate, in units of 100Mbits/sec Not QLogic req'd */
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/* Byte 141 is Extended Rate Select. Not QLogic req'd */
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/* Bytes 142..145 are lengths for various fiber types. Not QLogic req'd */
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/* Byte 146 is length for Copper. Units of 1 meter */
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#define QSFP_MOD_LEN_OFFS 146
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/*
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* Byte 147 is Device technology. D0..3 not Qlogc req'd
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* D4..7 select from 15 choices, translated by table:
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*/
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#define QSFP_MOD_TECH_OFFS 147
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extern const char *const qib_qsfp_devtech[16];
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/* Active Equalization includes fiber, copper full EQ, and copper near Eq */
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#define QSFP_IS_ACTIVE(tech) ((0xA2FF >> ((tech) >> 4)) & 1)
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/* Attenuation should be valid for copper other than full/near Eq */
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#define QSFP_HAS_ATTEN(tech) ((0x4D00 >> ((tech) >> 4)) & 1)
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/* Length is only valid if technology is "copper" */
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#define QSFP_IS_CU(tech) ((0xED00 >> ((tech) >> 4)) & 1)
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#define QSFP_TECH_1490 9
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#define QSFP_OUI(oui) (((unsigned)oui[0] << 16) | ((unsigned)oui[1] << 8) | \
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oui[2])
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#define QSFP_OUI_AMPHENOL 0x415048
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#define QSFP_OUI_FINISAR 0x009065
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#define QSFP_OUI_GORE 0x002177
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/* Bytes 148..163 are Vendor Name, Left-justified Blank-filled */
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#define QSFP_VEND_OFFS 148
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#define QSFP_VEND_LEN 16
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/* Byte 164 is IB Extended tranceiver codes Bits D0..3 are SDR,DDR,QDR,EDR */
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#define QSFP_IBXCV_OFFS 164
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/* Bytes 165..167 are Vendor OUI number */
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#define QSFP_VOUI_OFFS 165
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#define QSFP_VOUI_LEN 3
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/* Bytes 168..183 are Vendor Part Number, string */
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#define QSFP_PN_OFFS 168
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#define QSFP_PN_LEN 16
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/* Bytes 184,185 are Vendor Rev. Left Justified, Blank-filled */
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#define QSFP_REV_OFFS 184
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#define QSFP_REV_LEN 2
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/*
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* Bytes 186,187 are Wavelength, if Optical. Not Qlogic req'd
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* If copper, they are attenuation in dB:
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* Byte 186 is at 2.5Gb/sec (SDR), Byte 187 at 5.0Gb/sec (DDR)
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*/
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#define QSFP_ATTEN_OFFS 186
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#define QSFP_ATTEN_LEN 2
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/* Bytes 188,189 are Wavelength tolerance, not QLogic req'd */
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/* Byte 190 is Max Case Temp. Not QLogic req'd */
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/* Byte 191 is LSB of sum of bytes 128..190. Not QLogic req'd */
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#define QSFP_CC_OFFS 191
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/* Bytes 192..195 are Options implemented in qsfp. Not Qlogic req'd */
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/* Bytes 196..211 are Serial Number, String */
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#define QSFP_SN_OFFS 196
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#define QSFP_SN_LEN 16
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/* Bytes 212..219 are date-code YYMMDD (MM==1 for Jan) */
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#define QSFP_DATE_OFFS 212
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#define QSFP_DATE_LEN 6
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/* Bytes 218,219 are optional lot-code, string */
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#define QSFP_LOT_OFFS 218
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#define QSFP_LOT_LEN 2
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/* Bytes 220, 221 indicate monitoring options, Not QLogic req'd */
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/* Byte 223 is LSB of sum of bytes 192..222 */
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#define QSFP_CC_EXT_OFFS 223
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/*
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* struct qib_qsfp_data encapsulates state of QSFP device for one port.
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* it will be part of port-chip-specific data if a board supports QSFP.
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*
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* Since multiple board-types use QSFP, and their pport_data structs
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* differ (in the chip-specific section), we need a pointer to its head.
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*
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* Avoiding premature optimization, we will have one work_struct per port,
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* and let the (increasingly inaccurately named) eep_lock arbitrate
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* access to common resources.
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*
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*/
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/*
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* Hold the parts of the onboard EEPROM that we care about, so we aren't
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* coonstantly bit-boffing
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*/
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struct qib_qsfp_cache {
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u8 id; /* must be 0x0C or 0x0D; 0 indicates invalid EEPROM read */
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u8 pwr; /* in D6,7 */
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u8 len; /* in meters, Cu only */
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u8 tech;
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char vendor[QSFP_VEND_LEN];
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u8 xt_xcv; /* Ext. tranceiver codes, 4 lsbs are IB speed supported */
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u8 oui[QSFP_VOUI_LEN];
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u8 partnum[QSFP_PN_LEN];
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u8 rev[QSFP_REV_LEN];
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u8 atten[QSFP_ATTEN_LEN];
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u8 cks1; /* Checksum of bytes 128..190 */
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u8 serial[QSFP_SN_LEN];
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u8 date[QSFP_DATE_LEN];
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u8 lot[QSFP_LOT_LEN];
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u8 cks2; /* Checsum of bytes 192..222 */
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};
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#define QSFP_PWR(pbyte) (((pbyte) >> 6) & 3)
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#define QSFP_ATTEN_SDR(attenarray) (attenarray[0])
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#define QSFP_ATTEN_DDR(attenarray) (attenarray[1])
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struct qib_qsfp_data {
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/* Helps to find our way */
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struct qib_pportdata *ppd;
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struct work_struct work;
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struct qib_qsfp_cache cache;
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u64 t_insert;
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};
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extern int qib_refresh_qsfp_cache(struct qib_pportdata *ppd,
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struct qib_qsfp_cache *cp);
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extern void qib_qsfp_init(struct qib_qsfp_data *qd,
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void (*fevent)(struct work_struct *));
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extern void qib_qsfp_deinit(struct qib_qsfp_data *qd);
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