2 * Copyright (c) 2014, Alexander V. Chernikov
3 * Copyright (c) 2020, Ryan Moeller <freqlabs@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/types.h>
28 #include <sys/param.h>
29 #include <sys/ioctl.h>
30 #include <sys/socket.h>
33 #include <net/sff8436.h>
34 #include <net/sff8472.h>
46 #include <libifconfig.h>
47 #include <libifconfig_internal.h>
48 #include <libifconfig_sfp.h>
49 #include <libifconfig_sfp_tables_internal.h>
51 #define SFF_8636_EXT_COMPLIANCE 0x80
56 int error; /* Store first error */
57 enum sfp_id id; /* Module type */
61 find_zero_bit(const struct sfp_enum_metadata *table, int value, int sz)
65 for (v = 1, m = 1 << (8 * sz); v < m; v <<= 1) {
68 if (find_metadata(table, value & v) != NULL) {
76 * Reads i2c data from opened kernel socket.
79 read_i2c(struct i2c_info *ii, uint8_t addr, uint8_t off, uint8_t len,
88 ii->ifr.ifr_data = (caddr_t)&req;
92 memset(&req, 0, sizeof(req));
98 l = MIN(sizeof(req.data), len);
100 if (ifconfig_ioctlwrap(ii->h, AF_LOCAL, SIOCGI2C,
106 memcpy(&buf[i], req.data, l);
116 i2c_info_init(struct i2c_info *ii, ifconfig_handle_t *h, const char *name)
120 memset(ii, 0, sizeof(*ii));
121 strlcpy(ii->ifr.ifr_name, name, sizeof(ii->ifr.ifr_name));
125 * Try to read byte 0 from i2c:
126 * Both SFF-8472 and SFF-8436 use it as
127 * 'identification byte'.
128 * Stop reading status on zero as value -
129 * this might happen in case of empty transceiver slot.
132 read_i2c(ii, SFF_8472_BASE, SFF_8472_ID, 1, &id_byte);
136 h->error.errtype = OTHER;
137 h->error.errcode = ENOENT;
145 get_sfp_info(struct i2c_info *ii, struct ifconfig_sfp_info *sfp)
149 read_i2c(ii, SFF_8472_BASE, SFF_8472_ID, 1, &sfp->sfp_id);
150 read_i2c(ii, SFF_8472_BASE, SFF_8472_CONNECTOR, 1, &sfp->sfp_conn);
152 /* Use extended compliance code if it's valid */
153 read_i2c(ii, SFF_8472_BASE, SFF_8472_TRANS, 1, &sfp->sfp_eth_ext);
154 if (sfp->sfp_eth_ext == 0) {
155 /* Next, check 10G Ethernet/IB CCs */
156 read_i2c(ii, SFF_8472_BASE, SFF_8472_TRANS_START, 1, &code);
157 sfp->sfp_eth_10g = find_zero_bit(sfp_eth_10g_table, code, 1);
158 if (sfp->sfp_eth_10g == 0) {
159 /* No match. Try Ethernet 1G */
160 read_i2c(ii, SFF_8472_BASE, SFF_8472_TRANS_START + 3,
162 sfp->sfp_eth = find_zero_bit(sfp_eth_table, code, 1);
170 get_qsfp_info(struct i2c_info *ii, struct ifconfig_sfp_info *sfp)
174 read_i2c(ii, SFF_8436_BASE, SFF_8436_ID, 1, &sfp->sfp_id);
175 read_i2c(ii, SFF_8436_BASE, SFF_8436_CONNECTOR, 1, &sfp->sfp_conn);
177 read_i2c(ii, SFF_8436_BASE, SFF_8436_STATUS, 1, &sfp->sfp_rev);
179 /* Check for extended specification compliance */
180 read_i2c(ii, SFF_8436_BASE, SFF_8436_CODE_E1040100G, 1, &code);
181 if (code & SFF_8636_EXT_COMPLIANCE) {
182 read_i2c(ii, SFF_8436_BASE, SFF_8436_OPTIONS_START, 1,
185 /* Check 10/40G Ethernet class only */
187 find_zero_bit(sfp_eth_1040g_table, code, 1);
194 ifconfig_sfp_get_sfp_info(ifconfig_handle_t *h,
195 const char *name, struct ifconfig_sfp_info *sfp)
200 memset(sfp, 0, sizeof(*sfp));
202 if (i2c_info_init(&ii, h, name) != 0)
205 /* Read bytes 3-10 at once */
206 read_i2c(&ii, SFF_8472_BASE, SFF_8472_TRANS_START, 8, buf);
210 /* Check 10G ethernet first */
211 sfp->sfp_eth_10g = find_zero_bit(sfp_eth_10g_table, buf[0], 1);
212 if (sfp->sfp_eth_10g == 0) {
213 /* No match. Try 1G */
214 sfp->sfp_eth = find_zero_bit(sfp_eth_table, buf[3], 1);
216 sfp->sfp_fc_len = find_zero_bit(sfp_fc_len_table, buf[4], 1);
217 sfp->sfp_fc_media = find_zero_bit(sfp_fc_media_table, buf[6], 1);
218 sfp->sfp_fc_speed = find_zero_bit(sfp_fc_speed_table, buf[7], 1);
220 find_zero_bit(sfp_cab_tech_table, (buf[4] << 8) | buf[5], 2);
222 if (ifconfig_sfp_id_is_qsfp(ii.id))
223 return (get_qsfp_info(&ii, sfp));
224 return (get_sfp_info(&ii, sfp));
228 channel_count(enum sfp_id id)
230 /* TODO: other ids */
235 case SFP_ID_QSFPPLUS:
244 ifconfig_sfp_channel_count(const struct ifconfig_sfp_info *sfp)
246 return (channel_count(sfp->sfp_id));
250 * Print SFF-8472/SFF-8436 string to supplied buffer.
251 * All (vendor-specific) strings are padded right with '0x20'.
254 get_sff_string(struct i2c_info *ii, uint8_t addr, uint8_t off, char *dst)
256 read_i2c(ii, addr, off, SFF_VENDOR_STRING_SIZE, dst);
257 dst += SFF_VENDOR_STRING_SIZE;
258 do { *dst-- = '\0'; } while (*dst == 0x20);
262 get_sff_date(struct i2c_info *ii, uint8_t addr, uint8_t off, char *dst)
264 char buf[SFF_VENDOR_DATE_SIZE];
266 read_i2c(ii, addr, off, SFF_VENDOR_DATE_SIZE, buf);
267 sprintf(dst, "20%c%c-%c%c-%c%c", buf[0], buf[1], buf[2], buf[3],
272 get_sfp_vendor_info(struct i2c_info *ii, struct ifconfig_sfp_vendor_info *vi)
274 get_sff_string(ii, SFF_8472_BASE, SFF_8472_VENDOR_START, vi->name);
275 get_sff_string(ii, SFF_8472_BASE, SFF_8472_PN_START, vi->pn);
276 get_sff_string(ii, SFF_8472_BASE, SFF_8472_SN_START, vi->sn);
277 get_sff_date(ii, SFF_8472_BASE, SFF_8472_DATE_START, vi->date);
282 get_qsfp_vendor_info(struct i2c_info *ii, struct ifconfig_sfp_vendor_info *vi)
284 get_sff_string(ii, SFF_8436_BASE, SFF_8436_VENDOR_START, vi->name);
285 get_sff_string(ii, SFF_8436_BASE, SFF_8436_PN_START, vi->pn);
286 get_sff_string(ii, SFF_8436_BASE, SFF_8436_SN_START, vi->sn);
287 get_sff_date(ii, SFF_8436_BASE, SFF_8436_DATE_START, vi->date);
292 ifconfig_sfp_get_sfp_vendor_info(ifconfig_handle_t *h,
293 const char *name, struct ifconfig_sfp_vendor_info *vi)
297 memset(vi, 0, sizeof(*vi));
299 if (i2c_info_init(&ii, h, name) != 0)
302 if (ifconfig_sfp_id_is_qsfp(ii.id))
303 return (get_qsfp_vendor_info(&ii, vi));
304 return (get_sfp_vendor_info(&ii, vi));
308 * Converts internal temperature (SFF-8472, SFF-8436)
309 * 16-bit unsigned value to human-readable representation:
311 * Internally measured Module temperature are represented
312 * as a 16-bit signed twos complement value in increments of
313 * 1/256 degrees Celsius, yielding a total range of –128C to +128C
314 * that is considered valid between –40 and +125C.
317 get_sff_temp(struct i2c_info *ii, uint8_t addr, uint8_t off)
322 read_i2c(ii, addr, off, 2, buf);
324 d += (double)buf[1] / 256;
329 * Retrieves supplied voltage (SFF-8472, SFF-8436).
330 * 16-bit usigned value, treated as range 0..+6.55 Volts
333 get_sff_voltage(struct i2c_info *ii, uint8_t addr, uint8_t off)
338 read_i2c(ii, addr, off, 2, buf);
339 d = (double)((buf[0] << 8) | buf[1]);
344 * The following conversions assume internally-calibrated data.
345 * This is always true for SFF-8346, and explicitly checked for SFF-8472.
349 power_mW(uint16_t power)
351 /* Power is specified in units of 0.1 uW. */
352 return (1.0 * power / 10000);
356 power_dBm(uint16_t power)
358 return (10.0 * log10(power_mW(power)));
362 bias_mA(uint16_t bias)
364 /* Bias current is specified in units of 2 uA. */
365 return (1.0 * bias / 500);
369 get_sff_channel(struct i2c_info *ii, uint8_t addr, uint8_t off)
373 read_i2c(ii, addr, off, 2, buf);
377 return ((buf[0] << 8) + buf[1]);
381 get_sfp_status(struct i2c_info *ii, struct ifconfig_sfp_status *ss)
383 uint8_t diag_type, flags;
385 /* Read diagnostic monitoring type */
386 read_i2c(ii, SFF_8472_BASE, SFF_8472_DIAG_TYPE, 1, (caddr_t)&diag_type);
391 * Read monitoring data IFF it is supplied AND is
392 * internally calibrated
394 flags = SFF_8472_DDM_DONE | SFF_8472_DDM_INTERNAL;
395 if ((diag_type & flags) != flags) {
396 ii->h->error.errtype = OTHER;
397 ii->h->error.errcode = ENXIO;
401 ss->temp = get_sff_temp(ii, SFF_8472_DIAG, SFF_8472_TEMP);
402 ss->voltage = get_sff_voltage(ii, SFF_8472_DIAG, SFF_8472_VCC);
403 ss->channel = calloc(channel_count(ii->id), sizeof(*ss->channel));
404 if (ss->channel == NULL) {
405 ii->h->error.errtype = OTHER;
406 ii->h->error.errcode = ENOMEM;
409 ss->channel[0].rx = get_sff_channel(ii, SFF_8472_DIAG, SFF_8472_RX_POWER);
410 ss->channel[0].tx = get_sff_channel(ii, SFF_8472_DIAG, SFF_8472_TX_BIAS);
415 get_qsfp_bitrate(struct i2c_info *ii)
421 read_i2c(ii, SFF_8436_BASE, SFF_8436_BITRATE, 1, &code);
424 read_i2c(ii, SFF_8436_BASE, SFF_8636_BITRATE, 1, &code);
432 get_qsfp_status(struct i2c_info *ii, struct ifconfig_sfp_status *ss)
436 ss->temp = get_sff_temp(ii, SFF_8436_BASE, SFF_8436_TEMP);
437 ss->voltage = get_sff_voltage(ii, SFF_8436_BASE, SFF_8436_VCC);
438 channels = channel_count(ii->id);
439 ss->channel = calloc(channels, sizeof(*ss->channel));
440 if (ss->channel == NULL) {
441 ii->h->error.errtype = OTHER;
442 ii->h->error.errcode = ENOMEM;
445 for (size_t chan = 0; chan < channels; ++chan) {
446 uint8_t rxoffs = SFF_8436_RX_CH1_MSB + chan * sizeof(uint16_t);
447 uint8_t txoffs = SFF_8436_TX_CH1_MSB + chan * sizeof(uint16_t);
448 ss->channel[chan].rx =
449 get_sff_channel(ii, SFF_8436_BASE, rxoffs);
450 ss->channel[chan].tx =
451 get_sff_channel(ii, SFF_8436_BASE, txoffs);
453 ss->bitrate = get_qsfp_bitrate(ii);
458 ifconfig_sfp_get_sfp_status(ifconfig_handle_t *h, const char *name,
459 struct ifconfig_sfp_status *ss)
463 memset(ss, 0, sizeof(*ss));
465 if (i2c_info_init(&ii, h, name) != 0)
468 if (ifconfig_sfp_id_is_qsfp(ii.id))
469 return (get_qsfp_status(&ii, ss));
470 return (get_sfp_status(&ii, ss));
474 ifconfig_sfp_free_sfp_status(struct ifconfig_sfp_status *ss)
481 sfp_id_string_alt(uint8_t value)
485 if (value <= SFF_8024_ID_LAST)
486 id = sff_8024_id[value];
487 else if (value > 0x80)
488 id = "Vendor specific";
496 sfp_conn_string_alt(uint8_t value)
500 if (value >= 0x0D && value <= 0x1F)
501 conn = "Unallocated";
502 else if (value >= 0x24 && value <= 0x7F)
503 conn = "Unallocated";
505 conn = "Vendor specific";
511 ifconfig_sfp_get_sfp_info_strings(const struct ifconfig_sfp_info *sfp,
512 struct ifconfig_sfp_info_strings *strings)
514 get_sfp_info_strings(sfp, strings);
515 if (strings->sfp_id == NULL)
516 strings->sfp_id = sfp_id_string_alt(sfp->sfp_id);
517 if (strings->sfp_conn == NULL)
518 strings->sfp_conn = sfp_conn_string_alt(sfp->sfp_conn);
519 if (strings->sfp_rev == NULL)
520 strings->sfp_rev = "Unallocated";
524 ifconfig_sfp_physical_spec(const struct ifconfig_sfp_info *sfp,
525 const struct ifconfig_sfp_info_strings *strings)
527 switch (sfp->sfp_id) {
531 case SFP_ID_QSFPPLUS:
533 if (sfp->sfp_eth_1040g & SFP_ETH_1040G_EXTENDED)
534 return (strings->sfp_eth_ext);
535 else if (sfp->sfp_eth_1040g)
536 return (strings->sfp_eth_1040g);
539 if (sfp->sfp_eth_ext)
540 return (strings->sfp_eth_ext);
541 else if (sfp->sfp_eth_10g)
542 return (strings->sfp_eth_10g);
543 else if (sfp->sfp_eth)
544 return (strings->sfp_eth);
551 ifconfig_sfp_get_sfp_dump(ifconfig_handle_t *h, const char *name,
552 struct ifconfig_sfp_dump *dump)
555 uint8_t *buf = dump->data;
557 memset(dump->data, 0, sizeof(dump->data));
559 if (i2c_info_init(&ii, h, name) != 0)
562 if (ifconfig_sfp_id_is_qsfp(ii.id)) {
563 read_i2c(&ii, SFF_8436_BASE, QSFP_DUMP0_START, QSFP_DUMP0_SIZE,
564 buf + QSFP_DUMP0_START);
565 read_i2c(&ii, SFF_8436_BASE, QSFP_DUMP1_START, QSFP_DUMP1_SIZE,
566 buf + QSFP_DUMP1_START);
568 read_i2c(&ii, SFF_8472_BASE, SFP_DUMP_START, SFP_DUMP_SIZE,
569 buf + SFP_DUMP_START);
572 return (ii.error != 0 ? -1 : 0);
576 ifconfig_sfp_dump_region_count(const struct ifconfig_sfp_dump *dp)
578 uint8_t id_byte = dp->data[0];
580 switch ((enum sfp_id)id_byte) {
584 case SFP_ID_QSFPPLUS: