1 From 4ce55fb01c473bf1ad2048f8b4db62dca392e6d2 Mon Sep 17 00:00:00 2001
2 From: Russell King <rmk+kernel@arm.linux.org.uk>
3 Date: Sun, 13 Sep 2015 01:06:31 +0100
4 Subject: [PATCH] sfp: display SFP module information
6 Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
8 drivers/net/phy/sfp.c | 261 +++++++++++++++++++++++++++++++++++++++++-
9 1 file changed, 258 insertions(+), 3 deletions(-)
11 --- a/drivers/net/phy/sfp.c
12 +++ b/drivers/net/phy/sfp.c
13 @@ -1132,6 +1132,184 @@ static void sfp_hwmon_remove(struct sfp
17 +static const char *sfp_link_len(char *buf, size_t size, unsigned int length,
18 + unsigned int multiplier)
21 + return "unsupported/unspecified";
23 + if (length == 255) {
29 + length *= multiplier;
32 + snprintf(buf, size, "%u.%0*ukm",
34 + multiplier > 100 ? 1 :
35 + multiplier > 10 ? 2 : 3,
38 + snprintf(buf, size, "%um", length);
49 +static const struct bitfield sfp_options[] = {
51 + .mask = SFP_OPTIONS_HIGH_POWER_LEVEL,
52 + .val = SFP_OPTIONS_HIGH_POWER_LEVEL,
55 + .mask = SFP_OPTIONS_PAGING_A2,
56 + .val = SFP_OPTIONS_PAGING_A2,
59 + .mask = SFP_OPTIONS_RETIMER,
60 + .val = SFP_OPTIONS_RETIMER,
63 + .mask = SFP_OPTIONS_COOLED_XCVR,
64 + .val = SFP_OPTIONS_COOLED_XCVR,
67 + .mask = SFP_OPTIONS_POWER_DECL,
68 + .val = SFP_OPTIONS_POWER_DECL,
71 + .mask = SFP_OPTIONS_RX_LINEAR_OUT,
72 + .val = SFP_OPTIONS_RX_LINEAR_OUT,
75 + .mask = SFP_OPTIONS_RX_DECISION_THRESH,
76 + .val = SFP_OPTIONS_RX_DECISION_THRESH,
79 + .mask = SFP_OPTIONS_TUNABLE_TX,
80 + .val = SFP_OPTIONS_TUNABLE_TX,
83 + .mask = SFP_OPTIONS_RATE_SELECT,
84 + .val = SFP_OPTIONS_RATE_SELECT,
87 + .mask = SFP_OPTIONS_TX_DISABLE,
88 + .val = SFP_OPTIONS_TX_DISABLE,
91 + .mask = SFP_OPTIONS_TX_FAULT,
92 + .val = SFP_OPTIONS_TX_FAULT,
95 + .mask = SFP_OPTIONS_LOS_INVERTED,
96 + .val = SFP_OPTIONS_LOS_INVERTED,
99 + .mask = SFP_OPTIONS_LOS_NORMAL,
100 + .val = SFP_OPTIONS_LOS_NORMAL,
105 +static const struct bitfield diagmon[] = {
107 + .mask = SFP_DIAGMON_DDM,
108 + .val = SFP_DIAGMON_DDM,
111 + .mask = SFP_DIAGMON_INT_CAL,
112 + .val = SFP_DIAGMON_INT_CAL,
115 + .mask = SFP_DIAGMON_EXT_CAL,
116 + .val = SFP_DIAGMON_EXT_CAL,
119 + .mask = SFP_DIAGMON_RXPWR_AVG,
120 + .val = SFP_DIAGMON_RXPWR_AVG,
125 +static const char *sfp_bitfield(char *out, size_t outsz, const struct bitfield *bits, unsigned int val)
131 + while (bits->mask) {
132 + if ((val & bits->mask) == bits->val) {
133 + n = snprintf(p, outsz, "%s%s",
134 + out != p ? ", " : "",
147 +static const char *sfp_connector(unsigned int connector)
149 + switch (connector) {
150 + case SFP_CONNECTOR_UNSPEC:
151 + return "unknown/unspecified";
152 + case SFP_CONNECTOR_SC:
154 + case SFP_CONNECTOR_FIBERJACK:
155 + return "Fiberjack";
156 + case SFP_CONNECTOR_LC:
158 + case SFP_CONNECTOR_MT_RJ:
160 + case SFP_CONNECTOR_MU:
162 + case SFP_CONNECTOR_SG:
164 + case SFP_CONNECTOR_OPTICAL_PIGTAIL:
165 + return "Optical pigtail";
166 + case SFP_CONNECTOR_HSSDC_II:
168 + case SFP_CONNECTOR_COPPER_PIGTAIL:
169 + return "Copper pigtail";
175 +static const char *sfp_encoding(unsigned int encoding)
177 + switch (encoding) {
178 + case SFP_ENCODING_UNSPEC:
179 + return "unspecified";
180 + case SFP_ENCODING_8472_64B66B:
182 + case SFP_ENCODING_8B10B:
184 + case SFP_ENCODING_4B5B:
186 + case SFP_ENCODING_NRZ:
188 + case SFP_ENCODING_8472_MANCHESTER:
189 + return "MANCHESTER";
196 static void sfp_module_tx_disable(struct sfp *sfp)
198 @@ -1376,6 +1554,8 @@ static int sfp_sm_mod_probe(struct sfp *
200 /* SFP module inserted - read I2C data */
201 struct sfp_eeprom_id id;
207 @@ -1432,12 +1612,87 @@ static int sfp_sm_mod_probe(struct sfp *
211 - dev_info(sfp->dev, "module %.*s %.*s rev %.*s sn %.*s dc %.*s\n",
212 + date[0] = sfp->id.ext.datecode[4];
213 + date[1] = sfp->id.ext.datecode[5];
215 + date[3] = sfp->id.ext.datecode[2];
216 + date[4] = sfp->id.ext.datecode[3];
218 + date[6] = sfp->id.ext.datecode[0];
219 + date[7] = sfp->id.ext.datecode[1];
222 + dev_info(sfp->dev, "module %.*s %.*s rev %.*s sn %.*s dc %s\n",
223 (int)sizeof(id.base.vendor_name), id.base.vendor_name,
224 (int)sizeof(id.base.vendor_pn), id.base.vendor_pn,
225 (int)sizeof(id.base.vendor_rev), id.base.vendor_rev,
226 - (int)sizeof(id.ext.vendor_sn), id.ext.vendor_sn,
227 - (int)sizeof(id.ext.datecode), id.ext.datecode);
228 + (int)sizeof(id.ext.vendor_sn), id.ext.vendor_sn, date);
229 + dev_info(sfp->dev, " %s connector, encoding %s, nominal bitrate %u.%uGbps +%u%% -%u%%\n",
230 + sfp_connector(sfp->id.base.connector),
231 + sfp_encoding(sfp->id.base.encoding),
232 + sfp->id.base.br_nominal / 10,
233 + sfp->id.base.br_nominal % 10,
234 + sfp->id.ext.br_max, sfp->id.ext.br_min);
235 + dev_info(sfp->dev, " 1000BaseSX%c 1000BaseLX%c 1000BaseCX%c 1000BaseT%c 100BaseLX%c 100BaseFX%c BaseBX10%c BasePX%c\n",
236 + sfp->id.base.e1000_base_sx ? '+' : '-',
237 + sfp->id.base.e1000_base_lx ? '+' : '-',
238 + sfp->id.base.e1000_base_cx ? '+' : '-',
239 + sfp->id.base.e1000_base_t ? '+' : '-',
240 + sfp->id.base.e100_base_lx ? '+' : '-',
241 + sfp->id.base.e100_base_fx ? '+' : '-',
242 + sfp->id.base.e_base_bx10 ? '+' : '-',
243 + sfp->id.base.e_base_px ? '+' : '-');
244 + dev_info(sfp->dev, " 10GBaseSR%c 10GBaseLR%c 10GBaseLRM%c 10GBaseER%c\n",
245 + sfp->id.base.e10g_base_sr ? '+' : '-',
246 + sfp->id.base.e10g_base_lr ? '+' : '-',
247 + sfp->id.base.e10g_base_lrm ? '+' : '-',
248 + sfp->id.base.e10g_base_er ? '+' : '-');
250 + if (!sfp->id.base.sfp_ct_passive && !sfp->id.base.sfp_ct_active &&
251 + !sfp->id.base.e1000_base_t) {
252 + char len_9um[16], len_om[16];
254 + dev_info(sfp->dev, " Wavelength %unm, fiber lengths:\n",
255 + be16_to_cpup(&sfp->id.base.optical_wavelength));
257 + if (sfp->id.base.link_len[0] == 255)
258 + strcpy(len_9um, ">254km");
259 + else if (sfp->id.base.link_len[1] && sfp->id.base.link_len[1] != 255)
260 + sprintf(len_9um, "%um",
261 + sfp->id.base.link_len[1] * 100);
262 + else if (sfp->id.base.link_len[0])
263 + sprintf(len_9um, "%ukm", sfp->id.base.link_len[0]);
264 + else if (sfp->id.base.link_len[1] == 255)
265 + strcpy(len_9um, ">25.4km");
267 + strcpy(len_9um, "unsupported");
269 + dev_info(sfp->dev, " 9µm SM : %s\n", len_9um);
270 + dev_info(sfp->dev, " 62.5µm MM OM1: %s\n",
271 + sfp_link_len(len_om, sizeof(len_om),
272 + sfp->id.base.link_len[3], 10));
273 + dev_info(sfp->dev, " 50µm MM OM2: %s\n",
274 + sfp_link_len(len_om, sizeof(len_om),
275 + sfp->id.base.link_len[2], 10));
276 + dev_info(sfp->dev, " 50µm MM OM3: %s\n",
277 + sfp_link_len(len_om, sizeof(len_om),
278 + sfp->id.base.link_len[5], 10));
279 + dev_info(sfp->dev, " 50µm MM OM4: %s\n",
280 + sfp_link_len(len_om, sizeof(len_om),
281 + sfp->id.base.link_len[4], 10));
284 + dev_info(sfp->dev, " Copper length: %s\n",
285 + sfp_link_len(len, sizeof(len),
286 + sfp->id.base.link_len[4], 1));
289 + dev_info(sfp->dev, " Options: %s\n",
290 + sfp_bitfield(options, sizeof(options), sfp_options,
291 + be16_to_cpu(sfp->id.ext.options)));
292 + dev_info(sfp->dev, " Diagnostics: %s\n",
293 + sfp_bitfield(options, sizeof(options), diagmon,
294 + sfp->id.ext.diagmon));
296 /* Check whether we support this module */
297 if (!sfp->type->module_supported(&sfp->id)) {