1 From: Russell King <rmk+kernel@arm.linux.org.uk>
2 Date: Sun, 13 Sep 2015 01:06:31 +0100
3 Subject: [PATCH] sfp: display SFP module information
5 Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
8 --- a/drivers/net/phy/sfp.c
9 +++ b/drivers/net/phy/sfp.c
10 @@ -251,6 +251,182 @@ static unsigned int sfp_check(void *buf,
14 +static const char *sfp_link_len(char *buf, size_t size, unsigned int length,
15 + unsigned int multiplier)
18 + return "unsupported/unspecified";
20 + if (length == 255) {
26 + length *= multiplier;
29 + snprintf(buf, size, "%u.%0*ukm",
31 + multiplier > 100 ? 1 :
32 + multiplier > 10 ? 2 : 3,
35 + snprintf(buf, size, "%um", length);
46 +static const struct bitfield sfp_options[] = {
48 + .mask = SFP_OPTIONS_HIGH_POWER_LEVEL,
49 + .val = SFP_OPTIONS_HIGH_POWER_LEVEL,
52 + .mask = SFP_OPTIONS_PAGING_A2,
53 + .val = SFP_OPTIONS_PAGING_A2,
56 + .mask = SFP_OPTIONS_RETIMER,
57 + .val = SFP_OPTIONS_RETIMER,
60 + .mask = SFP_OPTIONS_COOLED_XCVR,
61 + .val = SFP_OPTIONS_COOLED_XCVR,
64 + .mask = SFP_OPTIONS_POWER_DECL,
65 + .val = SFP_OPTIONS_POWER_DECL,
68 + .mask = SFP_OPTIONS_RX_LINEAR_OUT,
69 + .val = SFP_OPTIONS_RX_LINEAR_OUT,
72 + .mask = SFP_OPTIONS_RX_DECISION_THRESH,
73 + .val = SFP_OPTIONS_RX_DECISION_THRESH,
76 + .mask = SFP_OPTIONS_TUNABLE_TX,
77 + .val = SFP_OPTIONS_TUNABLE_TX,
80 + .mask = SFP_OPTIONS_RATE_SELECT,
81 + .val = SFP_OPTIONS_RATE_SELECT,
84 + .mask = SFP_OPTIONS_TX_DISABLE,
85 + .val = SFP_OPTIONS_TX_DISABLE,
88 + .mask = SFP_OPTIONS_TX_FAULT,
89 + .val = SFP_OPTIONS_TX_FAULT,
92 + .mask = SFP_OPTIONS_LOS_INVERTED,
93 + .val = SFP_OPTIONS_LOS_INVERTED,
96 + .mask = SFP_OPTIONS_LOS_NORMAL,
97 + .val = SFP_OPTIONS_LOS_NORMAL,
102 +static const struct bitfield diagmon[] = {
104 + .mask = SFP_DIAGMON_DDM,
105 + .val = SFP_DIAGMON_DDM,
108 + .mask = SFP_DIAGMON_INT_CAL,
109 + .val = SFP_DIAGMON_INT_CAL,
112 + .mask = SFP_DIAGMON_EXT_CAL,
113 + .val = SFP_DIAGMON_EXT_CAL,
116 + .mask = SFP_DIAGMON_RXPWR_AVG,
117 + .val = SFP_DIAGMON_RXPWR_AVG,
122 +static const char *sfp_bitfield(char *out, size_t outsz, const struct bitfield *bits, unsigned int val)
128 + while (bits->mask) {
129 + if ((val & bits->mask) == bits->val) {
130 + n = snprintf(p, outsz, "%s%s",
131 + out != p ? ", " : "",
144 +static const char *sfp_connector(unsigned int connector)
146 + switch (connector) {
147 + case SFP_CONNECTOR_UNSPEC:
148 + return "unknown/unspecified";
149 + case SFP_CONNECTOR_SC:
151 + case SFP_CONNECTOR_FIBERJACK:
152 + return "Fiberjack";
153 + case SFP_CONNECTOR_LC:
155 + case SFP_CONNECTOR_MT_RJ:
157 + case SFP_CONNECTOR_MU:
159 + case SFP_CONNECTOR_SG:
161 + case SFP_CONNECTOR_OPTICAL_PIGTAIL:
162 + return "Optical pigtail";
163 + case SFP_CONNECTOR_HSSDC_II:
165 + case SFP_CONNECTOR_COPPER_PIGTAIL:
166 + return "Copper pigtail";
172 +static const char *sfp_encoding(unsigned int encoding)
174 + switch (encoding) {
175 + case SFP_ENCODING_UNSPEC:
176 + return "unspecified";
177 + case SFP_ENCODING_8B10B:
179 + case SFP_ENCODING_4B5B:
181 + case SFP_ENCODING_NRZ:
183 + case SFP_ENCODING_MANCHESTER:
184 + return "MANCHESTER";
191 static void sfp_module_tx_disable(struct sfp *sfp)
193 @@ -428,6 +604,7 @@ static int sfp_sm_mod_probe(struct sfp *
201 @@ -471,10 +648,78 @@ static int sfp_sm_mod_probe(struct sfp *
203 memcpy(sn, sfp->id.ext.vendor_sn, 16);
205 - memcpy(date, sfp->id.ext.datecode, 8);
206 + date[0] = sfp->id.ext.datecode[4];
207 + date[1] = sfp->id.ext.datecode[5];
209 + date[3] = sfp->id.ext.datecode[2];
210 + date[4] = sfp->id.ext.datecode[3];
212 + date[6] = sfp->id.ext.datecode[0];
213 + date[7] = sfp->id.ext.datecode[1];
216 dev_info(sfp->dev, "module %s %s rev %s sn %s dc %s\n", vendor, part, rev, sn, date);
217 + dev_info(sfp->dev, " %s connector, encoding %s, nominal bitrate %u.%uGbps +%u%% -%u%%\n",
218 + sfp_connector(sfp->id.base.connector),
219 + sfp_encoding(sfp->id.base.encoding),
220 + sfp->id.base.br_nominal / 10,
221 + sfp->id.base.br_nominal % 10,
222 + sfp->id.ext.br_max, sfp->id.ext.br_min);
223 + dev_info(sfp->dev, " 1000BaseSX%c 1000BaseLX%c 1000BaseCX%c 1000BaseT%c 100BaseTLX%c 1000BaseFX%c BaseBX10%c BasePX%c\n",
224 + sfp->id.base.e1000_base_sx ? '+' : '-',
225 + sfp->id.base.e1000_base_lx ? '+' : '-',
226 + sfp->id.base.e1000_base_cx ? '+' : '-',
227 + sfp->id.base.e1000_base_t ? '+' : '-',
228 + sfp->id.base.e100_base_lx ? '+' : '-',
229 + sfp->id.base.e100_base_fx ? '+' : '-',
230 + sfp->id.base.e_base_bx10 ? '+' : '-',
231 + sfp->id.base.e_base_px ? '+' : '-');
233 + if (!sfp->id.base.sfp_ct_passive && !sfp->id.base.sfp_ct_active &&
234 + !sfp->id.base.e1000_base_t) {
235 + char len_9um[16], len_om[16];
237 + dev_info(sfp->dev, " Wavelength %unm, fiber lengths:\n",
238 + be16_to_cpup(&sfp->id.base.optical_wavelength));
240 + if (sfp->id.base.link_len[0] == 255)
241 + strcpy(len_9um, ">254km");
242 + else if (sfp->id.base.link_len[1] && sfp->id.base.link_len[1] != 255)
243 + sprintf(len_9um, "%um",
244 + sfp->id.base.link_len[1] * 100);
245 + else if (sfp->id.base.link_len[0])
246 + sprintf(len_9um, "%ukm", sfp->id.base.link_len[0]);
247 + else if (sfp->id.base.link_len[1] == 255)
248 + strcpy(len_9um, ">25.4km");
250 + strcpy(len_9um, "unsupported");
252 + dev_info(sfp->dev, " 9µm SM : %s\n", len_9um);
253 + dev_info(sfp->dev, " 62.5µm MM OM1: %s\n",
254 + sfp_link_len(len_om, sizeof(len_om),
255 + sfp->id.base.link_len[3], 10));
256 + dev_info(sfp->dev, " 50µm MM OM2: %s\n",
257 + sfp_link_len(len_om, sizeof(len_om),
258 + sfp->id.base.link_len[2], 10));
259 + dev_info(sfp->dev, " 50µm MM OM3: %s\n",
260 + sfp_link_len(len_om, sizeof(len_om),
261 + sfp->id.base.link_len[5], 10));
262 + dev_info(sfp->dev, " 50µm MM OM4: %s\n",
263 + sfp_link_len(len_om, sizeof(len_om),
264 + sfp->id.base.link_len[4], 10));
267 + dev_info(sfp->dev, " Copper length: %s\n",
268 + sfp_link_len(len, sizeof(len),
269 + sfp->id.base.link_len[4], 1));
272 + dev_info(sfp->dev, " Options: %s\n",
273 + sfp_bitfield(options, sizeof(options), sfp_options,
274 + be16_to_cpu(sfp->id.ext.options)));
275 + dev_info(sfp->dev, " Diagnostics: %s\n",
276 + sfp_bitfield(options, sizeof(options), diagmon,
277 + sfp->id.ext.diagmon));
279 /* We only support SFP modules, not the legacy GBIC modules. */
280 if (sfp->id.base.phys_id != SFP_PHYS_ID_SFP ||