diff options
Diffstat (limited to 'drivers/staging/rdma/hfi1/qsfp.h')
| -rw-r--r-- | drivers/staging/rdma/hfi1/qsfp.h | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/drivers/staging/rdma/hfi1/qsfp.h b/drivers/staging/rdma/hfi1/qsfp.h new file mode 100644 index 000000000000..d30c2a6baa0b --- /dev/null +++ b/drivers/staging/rdma/hfi1/qsfp.h @@ -0,0 +1,222 @@ +/* + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2015 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * BSD LICENSE + * + * Copyright(c) 2015 Intel Corporation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * - Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +/* QSFP support common definitions, for hfi driver */ + +#define QSFP_DEV 0xA0 +#define QSFP_PWR_LAG_MSEC 2000 +#define QSFP_MODPRS_LAG_MSEC 20 +/* 128 byte pages, per SFF 8636 rev 2.4 */ +#define QSFP_MAX_NUM_PAGES 5 + +/* + * Below are masks for QSFP pins. Pins are the same for HFI0 and HFI1. + * _N means asserted low + */ +#define QSFP_HFI0_I2CCLK (1 << 0) +#define QSFP_HFI0_I2CDAT (1 << 1) +#define QSFP_HFI0_RESET_N (1 << 2) +#define QSFP_HFI0_INT_N (1 << 3) +#define QSFP_HFI0_MODPRST_N (1 << 4) + +/* QSFP is paged at 256 bytes */ +#define QSFP_PAGESIZE 256 + +/* Defined fields that Intel requires of qualified cables */ +/* Byte 0 is Identifier, not checked */ +/* Byte 1 is reserved "status MSB" */ +/* Byte 2 is "status LSB" We only care that D2 "Flat Mem" is set. */ +/* + * Rest of first 128 not used, although 127 is reserved for page select + * if module is not "Flat memory". + */ +#define QSFP_PAGE_SELECT_BYTE_OFFS 127 +/* Byte 128 is Identifier: must be 0x0c for QSFP, or 0x0d for QSFP+ */ +#define QSFP_MOD_ID_OFFS 128 +/* + * Byte 129 is "Extended Identifier". We only care about D7,D6: Power class + * 0:1.5W, 1:2.0W, 2:2.5W, 3:3.5W + */ +#define QSFP_MOD_PWR_OFFS 129 +/* Byte 130 is Connector type. Not Intel req'd */ +/* Bytes 131..138 are Transceiver types, bit maps for various tech, none IB */ +/* Byte 139 is encoding. code 0x01 is 8b10b. Not Intel req'd */ +/* byte 140 is nominal bit-rate, in units of 100Mbits/sec Not Intel req'd */ +/* Byte 141 is Extended Rate Select. Not Intel req'd */ +/* Bytes 142..145 are lengths for various fiber types. Not Intel req'd */ +/* Byte 146 is length for Copper. Units of 1 meter */ +#define QSFP_MOD_LEN_OFFS 146 +/* + * Byte 147 is Device technology. D0..3 not Intel req'd + * D4..7 select from 15 choices, translated by table: + */ +#define QSFP_MOD_TECH_OFFS 147 +extern const char *const hfi1_qsfp_devtech[16]; +/* Active Equalization includes fiber, copper full EQ, and copper near Eq */ +#define QSFP_IS_ACTIVE(tech) ((0xA2FF >> ((tech) >> 4)) & 1) +/* Active Equalization includes fiber, copper full EQ, and copper far Eq */ +#define QSFP_IS_ACTIVE_FAR(tech) ((0x32FF >> ((tech) >> 4)) & 1) +/* Attenuation should be valid for copper other than full/near Eq */ +#define QSFP_HAS_ATTEN(tech) ((0x4D00 >> ((tech) >> 4)) & 1) +/* Length is only valid if technology is "copper" */ +#define QSFP_IS_CU(tech) ((0xED00 >> ((tech) >> 4)) & 1) +#define QSFP_TECH_1490 9 + +#define QSFP_OUI(oui) (((unsigned)oui[0] << 16) | ((unsigned)oui[1] << 8) | \ + oui[2]) +#define QSFP_OUI_AMPHENOL 0x415048 +#define QSFP_OUI_FINISAR 0x009065 +#define QSFP_OUI_GORE 0x002177 + +/* Bytes 148..163 are Vendor Name, Left-justified Blank-filled */ +#define QSFP_VEND_OFFS 148 +#define QSFP_VEND_LEN 16 +/* Byte 164 is IB Extended transceiver codes Bits D0..3 are SDR,DDR,QDR,EDR */ +#define QSFP_IBXCV_OFFS 164 +/* Bytes 165..167 are Vendor OUI number */ +#define QSFP_VOUI_OFFS 165 +#define QSFP_VOUI_LEN 3 +/* Bytes 168..183 are Vendor Part Number, string */ +#define QSFP_PN_OFFS 168 +#define QSFP_PN_LEN 16 +/* Bytes 184,185 are Vendor Rev. Left Justified, Blank-filled */ +#define QSFP_REV_OFFS 184 +#define QSFP_REV_LEN 2 +/* + * Bytes 186,187 are Wavelength, if Optical. Not Intel req'd + * If copper, they are attenuation in dB: + * Byte 186 is at 2.5Gb/sec (SDR), Byte 187 at 5.0Gb/sec (DDR) + */ +#define QSFP_ATTEN_OFFS 186 +#define QSFP_ATTEN_LEN 2 +/* Bytes 188,189 are Wavelength tolerance, not Intel req'd */ +/* Byte 190 is Max Case Temp. Not Intel req'd */ +/* Byte 191 is LSB of sum of bytes 128..190. Not Intel req'd */ +#define QSFP_CC_OFFS 191 +/* Bytes 192..195 are Options implemented in qsfp. Not Intel req'd */ +/* Bytes 196..211 are Serial Number, String */ +#define QSFP_SN_OFFS 196 +#define QSFP_SN_LEN 16 +/* Bytes 212..219 are date-code YYMMDD (MM==1 for Jan) */ +#define QSFP_DATE_OFFS 212 +#define QSFP_DATE_LEN 6 +/* Bytes 218,219 are optional lot-code, string */ +#define QSFP_LOT_OFFS 218 +#define QSFP_LOT_LEN 2 +/* Bytes 220, 221 indicate monitoring options, Not Intel req'd */ +/* Byte 223 is LSB of sum of bytes 192..222 */ +#define QSFP_CC_EXT_OFFS 223 + +/* + * Interrupt flag masks + */ +#define QSFP_DATA_NOT_READY 0x01 + +#define QSFP_HIGH_TEMP_ALARM 0x80 +#define QSFP_LOW_TEMP_ALARM 0x40 +#define QSFP_HIGH_TEMP_WARNING 0x20 +#define QSFP_LOW_TEMP_WARNING 0x10 + +#define QSFP_HIGH_VCC_ALARM 0x80 +#define QSFP_LOW_VCC_ALARM 0x40 +#define QSFP_HIGH_VCC_WARNING 0x20 +#define QSFP_LOW_VCC_WARNING 0x10 + +#define QSFP_HIGH_POWER_ALARM 0x88 +#define QSFP_LOW_POWER_ALARM 0x44 +#define QSFP_HIGH_POWER_WARNING 0x22 +#define QSFP_LOW_POWER_WARNING 0x11 + +#define QSFP_HIGH_BIAS_ALARM 0x88 +#define QSFP_LOW_BIAS_ALARM 0x44 +#define QSFP_HIGH_BIAS_WARNING 0x22 +#define QSFP_LOW_BIAS_WARNING 0x11 + +/* + * struct qsfp_data encapsulates state of QSFP device for one port. + * it will be part of port-specific data if a board supports QSFP. + * + * Since multiple board-types use QSFP, and their pport_data structs + * differ (in the chip-specific section), we need a pointer to its head. + * + * Avoiding premature optimization, we will have one work_struct per port, + * and let the qsfp_lock arbitrate access to common resources. + * + */ + +#define QSFP_PWR(pbyte) (((pbyte) >> 6) & 3) +#define QSFP_ATTEN_SDR(attenarray) (attenarray[0]) +#define QSFP_ATTEN_DDR(attenarray) (attenarray[1]) + +struct qsfp_data { + /* Helps to find our way */ + struct hfi1_pportdata *ppd; + struct work_struct qsfp_work; + u8 cache[QSFP_MAX_NUM_PAGES*128]; + spinlock_t qsfp_lock; + u8 check_interrupt_flags; + u8 qsfp_interrupt_functional; + u8 cache_valid; + u8 cache_refresh_required; +}; + +int refresh_qsfp_cache(struct hfi1_pportdata *ppd, + struct qsfp_data *cp); +int qsfp_mod_present(struct hfi1_pportdata *ppd); +int get_cable_info(struct hfi1_devdata *dd, u32 port_num, u32 addr, + u32 len, u8 *data); + +int i2c_write(struct hfi1_pportdata *ppd, u32 target, int i2c_addr, + int offset, void *bp, int len); +int i2c_read(struct hfi1_pportdata *ppd, u32 target, int i2c_addr, + int offset, void *bp, int len); +int qsfp_write(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp, + int len); +int qsfp_read(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp, + int len); |