mirror of
https://github.com/freebsd/freebsd-src
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b3e7694832
Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/
591 lines
14 KiB
C
591 lines
14 KiB
C
/*-
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* Copyright (c) 2014, Alexander V. Chernikov
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* Copyright (c) 2020, Ryan Moeller <freqlabs@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/sff8436.h>
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#include <net/sff8472.h>
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#include <math.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <libifconfig.h>
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#include <libifconfig_internal.h>
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#include <libifconfig_sfp.h>
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#include <libifconfig_sfp_tables_internal.h>
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#define SFF_8636_EXT_COMPLIANCE 0x80
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struct i2c_info {
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struct ifreq ifr;
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ifconfig_handle_t *h;
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int error; /* Store first error */
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enum sfp_id id; /* Module type */
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};
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static uint8_t
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find_zero_bit(const struct sfp_enum_metadata *table, int value, int sz)
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{
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int v, m;
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for (v = 1, m = 1 << (8 * sz); v < m; v <<= 1) {
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if ((value & v) == 0)
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continue;
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if (find_metadata(table, value & v) != NULL) {
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return (value & v);
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}
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}
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return (0);
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}
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/*
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* Reads i2c data from opened kernel socket.
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*/
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static int
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read_i2c(struct i2c_info *ii, uint8_t addr, uint8_t off, uint8_t len,
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uint8_t *buf)
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{
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struct ifi2creq req;
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int i, l;
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if (ii->error != 0)
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return (ii->error);
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ii->ifr.ifr_data = (caddr_t)&req;
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i = 0;
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l = 0;
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memset(&req, 0, sizeof(req));
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req.dev_addr = addr;
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req.offset = off;
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req.len = len;
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while (len > 0) {
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l = MIN(sizeof(req.data), len);
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req.len = l;
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if (ifconfig_ioctlwrap(ii->h, AF_LOCAL, SIOCGI2C,
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&ii->ifr) != 0) {
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ii->error = errno;
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return (errno);
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}
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memcpy(&buf[i], req.data, l);
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len -= l;
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i += l;
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req.offset += l;
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}
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return (0);
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}
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static int
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i2c_info_init(struct i2c_info *ii, ifconfig_handle_t *h, const char *name)
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{
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uint8_t id_byte;
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memset(ii, 0, sizeof(*ii));
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strlcpy(ii->ifr.ifr_name, name, sizeof(ii->ifr.ifr_name));
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ii->h = h;
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/*
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* Try to read byte 0 from i2c:
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* Both SFF-8472 and SFF-8436 use it as
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* 'identification byte'.
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* Stop reading status on zero as value -
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* this might happen in case of empty transceiver slot.
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*/
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id_byte = 0;
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read_i2c(ii, SFF_8472_BASE, SFF_8472_ID, 1, &id_byte);
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if (ii->error != 0)
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return (-1);
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if (id_byte == 0) {
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h->error.errtype = OTHER;
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h->error.errcode = ENOENT;
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return (-1);
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}
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ii->id = id_byte;
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return (0);
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}
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static int
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get_sfp_info(struct i2c_info *ii, struct ifconfig_sfp_info *sfp)
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{
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uint8_t code;
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read_i2c(ii, SFF_8472_BASE, SFF_8472_ID, 1, &sfp->sfp_id);
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read_i2c(ii, SFF_8472_BASE, SFF_8472_CONNECTOR, 1, &sfp->sfp_conn);
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/* Use extended compliance code if it's valid */
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read_i2c(ii, SFF_8472_BASE, SFF_8472_TRANS, 1, &sfp->sfp_eth_ext);
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if (sfp->sfp_eth_ext == 0) {
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/* Next, check 10G Ethernet/IB CCs */
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read_i2c(ii, SFF_8472_BASE, SFF_8472_TRANS_START, 1, &code);
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sfp->sfp_eth_10g = find_zero_bit(sfp_eth_10g_table, code, 1);
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if (sfp->sfp_eth_10g == 0) {
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/* No match. Try Ethernet 1G */
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read_i2c(ii, SFF_8472_BASE, SFF_8472_TRANS_START + 3,
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1, &code);
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sfp->sfp_eth = find_zero_bit(sfp_eth_table, code, 1);
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}
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}
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return (ii->error);
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}
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static int
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get_qsfp_info(struct i2c_info *ii, struct ifconfig_sfp_info *sfp)
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{
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uint8_t code;
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read_i2c(ii, SFF_8436_BASE, SFF_8436_ID, 1, &sfp->sfp_id);
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read_i2c(ii, SFF_8436_BASE, SFF_8436_CONNECTOR, 1, &sfp->sfp_conn);
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read_i2c(ii, SFF_8436_BASE, SFF_8436_STATUS, 1, &sfp->sfp_rev);
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/* Check for extended specification compliance */
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read_i2c(ii, SFF_8436_BASE, SFF_8436_CODE_E1040100G, 1, &code);
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if (code & SFF_8636_EXT_COMPLIANCE) {
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read_i2c(ii, SFF_8436_BASE, SFF_8436_OPTIONS_START, 1,
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&sfp->sfp_eth_ext);
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} else {
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/* Check 10/40G Ethernet class only */
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sfp->sfp_eth_1040g =
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find_zero_bit(sfp_eth_1040g_table, code, 1);
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}
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return (ii->error);
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}
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int
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ifconfig_sfp_get_sfp_info(ifconfig_handle_t *h,
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const char *name, struct ifconfig_sfp_info *sfp)
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{
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struct i2c_info ii;
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char buf[8];
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memset(sfp, 0, sizeof(*sfp));
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if (i2c_info_init(&ii, h, name) != 0)
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return (-1);
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/* Read bytes 3-10 at once */
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read_i2c(&ii, SFF_8472_BASE, SFF_8472_TRANS_START, 8, buf);
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if (ii.error != 0)
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return (ii.error);
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/* Check 10G ethernet first */
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sfp->sfp_eth_10g = find_zero_bit(sfp_eth_10g_table, buf[0], 1);
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if (sfp->sfp_eth_10g == 0) {
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/* No match. Try 1G */
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sfp->sfp_eth = find_zero_bit(sfp_eth_table, buf[3], 1);
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}
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sfp->sfp_fc_len = find_zero_bit(sfp_fc_len_table, buf[4], 1);
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sfp->sfp_fc_media = find_zero_bit(sfp_fc_media_table, buf[6], 1);
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sfp->sfp_fc_speed = find_zero_bit(sfp_fc_speed_table, buf[7], 1);
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sfp->sfp_cab_tech =
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find_zero_bit(sfp_cab_tech_table, (buf[4] << 8) | buf[5], 2);
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if (ifconfig_sfp_id_is_qsfp(ii.id))
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return (get_qsfp_info(&ii, sfp));
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return (get_sfp_info(&ii, sfp));
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}
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static size_t
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channel_count(enum sfp_id id)
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{
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/* TODO: other ids */
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switch (id) {
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case SFP_ID_UNKNOWN:
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return (0);
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case SFP_ID_QSFP:
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case SFP_ID_QSFPPLUS:
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case SFP_ID_QSFP28:
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return (4);
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default:
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return (1);
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}
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}
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size_t
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ifconfig_sfp_channel_count(const struct ifconfig_sfp_info *sfp)
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{
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return (channel_count(sfp->sfp_id));
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}
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/*
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* Print SFF-8472/SFF-8436 string to supplied buffer.
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* All (vendor-specific) strings are padded right with '0x20'.
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*/
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static void
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get_sff_string(struct i2c_info *ii, uint8_t addr, uint8_t off, char *dst)
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{
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read_i2c(ii, addr, off, SFF_VENDOR_STRING_SIZE, dst);
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dst += SFF_VENDOR_STRING_SIZE;
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do { *dst-- = '\0'; } while (*dst == 0x20);
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}
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static void
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get_sff_date(struct i2c_info *ii, uint8_t addr, uint8_t off, char *dst)
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{
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char buf[SFF_VENDOR_DATE_SIZE];
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read_i2c(ii, addr, off, SFF_VENDOR_DATE_SIZE, buf);
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sprintf(dst, "20%c%c-%c%c-%c%c", buf[0], buf[1], buf[2], buf[3],
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buf[4], buf[5]);
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}
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static int
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get_sfp_vendor_info(struct i2c_info *ii, struct ifconfig_sfp_vendor_info *vi)
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{
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get_sff_string(ii, SFF_8472_BASE, SFF_8472_VENDOR_START, vi->name);
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get_sff_string(ii, SFF_8472_BASE, SFF_8472_PN_START, vi->pn);
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get_sff_string(ii, SFF_8472_BASE, SFF_8472_SN_START, vi->sn);
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get_sff_date(ii, SFF_8472_BASE, SFF_8472_DATE_START, vi->date);
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return (ii->error);
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}
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static int
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get_qsfp_vendor_info(struct i2c_info *ii, struct ifconfig_sfp_vendor_info *vi)
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{
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get_sff_string(ii, SFF_8436_BASE, SFF_8436_VENDOR_START, vi->name);
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get_sff_string(ii, SFF_8436_BASE, SFF_8436_PN_START, vi->pn);
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get_sff_string(ii, SFF_8436_BASE, SFF_8436_SN_START, vi->sn);
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get_sff_date(ii, SFF_8436_BASE, SFF_8436_DATE_START, vi->date);
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return (ii->error);
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}
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int
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ifconfig_sfp_get_sfp_vendor_info(ifconfig_handle_t *h,
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const char *name, struct ifconfig_sfp_vendor_info *vi)
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{
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struct i2c_info ii;
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memset(vi, 0, sizeof(*vi));
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if (i2c_info_init(&ii, h, name) != 0)
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return (-1);
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if (ifconfig_sfp_id_is_qsfp(ii.id))
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return (get_qsfp_vendor_info(&ii, vi));
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return (get_sfp_vendor_info(&ii, vi));
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}
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/*
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* Converts internal temperature (SFF-8472, SFF-8436)
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* 16-bit unsigned value to human-readable representation:
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*
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* Internally measured Module temperature are represented
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* as a 16-bit signed twos complement value in increments of
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* 1/256 degrees Celsius, yielding a total range of –128C to +128C
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* that is considered valid between –40 and +125C.
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*/
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static double
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get_sff_temp(struct i2c_info *ii, uint8_t addr, uint8_t off)
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{
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double d;
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uint8_t buf[2];
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read_i2c(ii, addr, off, 2, buf);
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d = (double)buf[0];
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d += (double)buf[1] / 256;
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return (d);
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}
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/*
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* Retrieves supplied voltage (SFF-8472, SFF-8436).
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* 16-bit usigned value, treated as range 0..+6.55 Volts
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*/
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static double
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get_sff_voltage(struct i2c_info *ii, uint8_t addr, uint8_t off)
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{
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double d;
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uint8_t buf[2];
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read_i2c(ii, addr, off, 2, buf);
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d = (double)((buf[0] << 8) | buf[1]);
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return (d / 10000);
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}
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/*
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* The following conversions assume internally-calibrated data.
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* This is always true for SFF-8346, and explicitly checked for SFF-8472.
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*/
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double
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power_mW(uint16_t power)
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{
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/* Power is specified in units of 0.1 uW. */
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return (1.0 * power / 10000);
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}
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double
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power_dBm(uint16_t power)
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{
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return (10.0 * log10(power_mW(power)));
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}
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double
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bias_mA(uint16_t bias)
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{
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/* Bias current is specified in units of 2 uA. */
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return (1.0 * bias / 500);
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}
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static uint16_t
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get_sff_channel(struct i2c_info *ii, uint8_t addr, uint8_t off)
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{
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uint8_t buf[2];
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read_i2c(ii, addr, off, 2, buf);
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if (ii->error != 0)
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return (0);
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return ((buf[0] << 8) + buf[1]);
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}
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static int
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get_sfp_status(struct i2c_info *ii, struct ifconfig_sfp_status *ss)
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{
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uint8_t diag_type, flags;
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/* Read diagnostic monitoring type */
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read_i2c(ii, SFF_8472_BASE, SFF_8472_DIAG_TYPE, 1, (caddr_t)&diag_type);
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if (ii->error != 0)
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return (-1);
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/*
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* Read monitoring data IFF it is supplied AND is
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* internally calibrated
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*/
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flags = SFF_8472_DDM_DONE | SFF_8472_DDM_INTERNAL;
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if ((diag_type & flags) != flags) {
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ii->h->error.errtype = OTHER;
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ii->h->error.errcode = ENXIO;
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return (-1);
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}
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ss->temp = get_sff_temp(ii, SFF_8472_DIAG, SFF_8472_TEMP);
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ss->voltage = get_sff_voltage(ii, SFF_8472_DIAG, SFF_8472_VCC);
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ss->channel = calloc(channel_count(ii->id), sizeof(*ss->channel));
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if (ss->channel == NULL) {
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ii->h->error.errtype = OTHER;
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ii->h->error.errcode = ENOMEM;
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return (-1);
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}
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ss->channel[0].rx = get_sff_channel(ii, SFF_8472_DIAG, SFF_8472_RX_POWER);
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ss->channel[0].tx = get_sff_channel(ii, SFF_8472_DIAG, SFF_8472_TX_BIAS);
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return (ii->error);
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}
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static uint32_t
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get_qsfp_bitrate(struct i2c_info *ii)
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{
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uint8_t code;
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uint32_t rate;
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code = 0;
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read_i2c(ii, SFF_8436_BASE, SFF_8436_BITRATE, 1, &code);
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rate = code * 100;
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if (code == 0xFF) {
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read_i2c(ii, SFF_8436_BASE, SFF_8636_BITRATE, 1, &code);
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rate = code * 250;
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}
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return (rate);
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}
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static int
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get_qsfp_status(struct i2c_info *ii, struct ifconfig_sfp_status *ss)
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{
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size_t channels;
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ss->temp = get_sff_temp(ii, SFF_8436_BASE, SFF_8436_TEMP);
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ss->voltage = get_sff_voltage(ii, SFF_8436_BASE, SFF_8436_VCC);
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channels = channel_count(ii->id);
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ss->channel = calloc(channels, sizeof(*ss->channel));
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if (ss->channel == NULL) {
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ii->h->error.errtype = OTHER;
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ii->h->error.errcode = ENOMEM;
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return (-1);
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}
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for (size_t chan = 0; chan < channels; ++chan) {
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uint8_t rxoffs = SFF_8436_RX_CH1_MSB + chan * sizeof(uint16_t);
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uint8_t txoffs = SFF_8436_TX_CH1_MSB + chan * sizeof(uint16_t);
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ss->channel[chan].rx =
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get_sff_channel(ii, SFF_8436_BASE, rxoffs);
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ss->channel[chan].tx =
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get_sff_channel(ii, SFF_8436_BASE, txoffs);
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}
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ss->bitrate = get_qsfp_bitrate(ii);
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return (ii->error);
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}
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int
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ifconfig_sfp_get_sfp_status(ifconfig_handle_t *h, const char *name,
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struct ifconfig_sfp_status *ss)
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{
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struct i2c_info ii;
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memset(ss, 0, sizeof(*ss));
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if (i2c_info_init(&ii, h, name) != 0)
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return (-1);
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if (ifconfig_sfp_id_is_qsfp(ii.id))
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return (get_qsfp_status(&ii, ss));
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return (get_sfp_status(&ii, ss));
|
||
}
|
||
|
||
void
|
||
ifconfig_sfp_free_sfp_status(struct ifconfig_sfp_status *ss)
|
||
{
|
||
if (ss != NULL)
|
||
free(ss->channel);
|
||
}
|
||
|
||
static const char *
|
||
sfp_id_string_alt(uint8_t value)
|
||
{
|
||
const char *id;
|
||
|
||
if (value <= SFF_8024_ID_LAST)
|
||
id = sff_8024_id[value];
|
||
else if (value > 0x80)
|
||
id = "Vendor specific";
|
||
else
|
||
id = "Reserved";
|
||
|
||
return (id);
|
||
}
|
||
|
||
static const char *
|
||
sfp_conn_string_alt(uint8_t value)
|
||
{
|
||
const char *conn;
|
||
|
||
if (value >= 0x0D && value <= 0x1F)
|
||
conn = "Unallocated";
|
||
else if (value >= 0x24 && value <= 0x7F)
|
||
conn = "Unallocated";
|
||
else
|
||
conn = "Vendor specific";
|
||
|
||
return (conn);
|
||
}
|
||
|
||
void
|
||
ifconfig_sfp_get_sfp_info_strings(const struct ifconfig_sfp_info *sfp,
|
||
struct ifconfig_sfp_info_strings *strings)
|
||
{
|
||
get_sfp_info_strings(sfp, strings);
|
||
if (strings->sfp_id == NULL)
|
||
strings->sfp_id = sfp_id_string_alt(sfp->sfp_id);
|
||
if (strings->sfp_conn == NULL)
|
||
strings->sfp_conn = sfp_conn_string_alt(sfp->sfp_conn);
|
||
if (strings->sfp_rev == NULL)
|
||
strings->sfp_rev = "Unallocated";
|
||
}
|
||
|
||
const char *
|
||
ifconfig_sfp_physical_spec(const struct ifconfig_sfp_info *sfp,
|
||
const struct ifconfig_sfp_info_strings *strings)
|
||
{
|
||
switch (sfp->sfp_id) {
|
||
case SFP_ID_UNKNOWN:
|
||
break;
|
||
case SFP_ID_QSFP:
|
||
case SFP_ID_QSFPPLUS:
|
||
case SFP_ID_QSFP28:
|
||
if (sfp->sfp_eth_1040g & SFP_ETH_1040G_EXTENDED)
|
||
return (strings->sfp_eth_ext);
|
||
else if (sfp->sfp_eth_1040g)
|
||
return (strings->sfp_eth_1040g);
|
||
break;
|
||
default:
|
||
if (sfp->sfp_eth_ext)
|
||
return (strings->sfp_eth_ext);
|
||
else if (sfp->sfp_eth_10g)
|
||
return (strings->sfp_eth_10g);
|
||
else if (sfp->sfp_eth)
|
||
return (strings->sfp_eth);
|
||
break;
|
||
}
|
||
return ("Unknown");
|
||
}
|
||
|
||
int
|
||
ifconfig_sfp_get_sfp_dump(ifconfig_handle_t *h, const char *name,
|
||
struct ifconfig_sfp_dump *dump)
|
||
{
|
||
struct i2c_info ii;
|
||
uint8_t *buf = dump->data;
|
||
|
||
memset(dump->data, 0, sizeof(dump->data));
|
||
|
||
if (i2c_info_init(&ii, h, name) != 0)
|
||
return (-1);
|
||
|
||
if (ifconfig_sfp_id_is_qsfp(ii.id)) {
|
||
read_i2c(&ii, SFF_8436_BASE, QSFP_DUMP0_START, QSFP_DUMP0_SIZE,
|
||
buf + QSFP_DUMP0_START);
|
||
read_i2c(&ii, SFF_8436_BASE, QSFP_DUMP1_START, QSFP_DUMP1_SIZE,
|
||
buf + QSFP_DUMP1_START);
|
||
} else {
|
||
read_i2c(&ii, SFF_8472_BASE, SFP_DUMP_START, SFP_DUMP_SIZE,
|
||
buf + SFP_DUMP_START);
|
||
}
|
||
|
||
return (ii.error != 0 ? -1 : 0);
|
||
}
|
||
|
||
size_t
|
||
ifconfig_sfp_dump_region_count(const struct ifconfig_sfp_dump *dp)
|
||
{
|
||
uint8_t id_byte = dp->data[0];
|
||
|
||
switch ((enum sfp_id)id_byte) {
|
||
case SFP_ID_UNKNOWN:
|
||
return (0);
|
||
case SFP_ID_QSFP:
|
||
case SFP_ID_QSFPPLUS:
|
||
case SFP_ID_QSFP28:
|
||
return (2);
|
||
default:
|
||
return (1);
|
||
}
|
||
}
|