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298 lines
8.1 KiB
Diff
298 lines
8.1 KiB
Diff
From 4ce55fb01c473bf1ad2048f8b4db62dca392e6d2 Mon Sep 17 00:00:00 2001
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From: Russell King <rmk+kernel@arm.linux.org.uk>
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Date: Sun, 13 Sep 2015 01:06:31 +0100
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Subject: [PATCH] sfp: display SFP module information
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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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---
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drivers/net/phy/sfp.c | 261 +++++++++++++++++++++++++++++++++++++++++-
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1 file changed, 258 insertions(+), 3 deletions(-)
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--- a/drivers/net/phy/sfp.c
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+++ b/drivers/net/phy/sfp.c
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@@ -1132,6 +1132,184 @@ static void sfp_hwmon_remove(struct sfp
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}
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#endif
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+static const char *sfp_link_len(char *buf, size_t size, unsigned int length,
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+ unsigned int multiplier)
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+{
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+ if (length == 0)
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+ return "unsupported/unspecified";
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+
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+ if (length == 255) {
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+ *buf++ = '>';
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+ size -= 1;
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+ length -= 1;
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+ }
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+
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+ length *= multiplier;
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+
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+ if (length >= 1000)
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+ snprintf(buf, size, "%u.%0*ukm",
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+ length / 1000,
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+ multiplier > 100 ? 1 :
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+ multiplier > 10 ? 2 : 3,
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+ length % 1000);
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+ else
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+ snprintf(buf, size, "%um", length);
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+
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+ return buf;
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+}
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+
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+struct bitfield {
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+ unsigned int mask;
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+ unsigned int val;
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+ const char *str;
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+};
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+
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+static const struct bitfield sfp_options[] = {
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+ {
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+ .mask = SFP_OPTIONS_HIGH_POWER_LEVEL,
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+ .val = SFP_OPTIONS_HIGH_POWER_LEVEL,
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+ .str = "hpl",
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+ }, {
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+ .mask = SFP_OPTIONS_PAGING_A2,
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+ .val = SFP_OPTIONS_PAGING_A2,
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+ .str = "paginga2",
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+ }, {
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+ .mask = SFP_OPTIONS_RETIMER,
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+ .val = SFP_OPTIONS_RETIMER,
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+ .str = "retimer",
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+ }, {
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+ .mask = SFP_OPTIONS_COOLED_XCVR,
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+ .val = SFP_OPTIONS_COOLED_XCVR,
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+ .str = "cooled",
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+ }, {
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+ .mask = SFP_OPTIONS_POWER_DECL,
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+ .val = SFP_OPTIONS_POWER_DECL,
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+ .str = "powerdecl",
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+ }, {
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+ .mask = SFP_OPTIONS_RX_LINEAR_OUT,
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+ .val = SFP_OPTIONS_RX_LINEAR_OUT,
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+ .str = "rxlinear",
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+ }, {
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+ .mask = SFP_OPTIONS_RX_DECISION_THRESH,
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+ .val = SFP_OPTIONS_RX_DECISION_THRESH,
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+ .str = "rxthresh",
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+ }, {
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+ .mask = SFP_OPTIONS_TUNABLE_TX,
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+ .val = SFP_OPTIONS_TUNABLE_TX,
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+ .str = "tunabletx",
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+ }, {
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+ .mask = SFP_OPTIONS_RATE_SELECT,
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+ .val = SFP_OPTIONS_RATE_SELECT,
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+ .str = "ratesel",
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+ }, {
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+ .mask = SFP_OPTIONS_TX_DISABLE,
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+ .val = SFP_OPTIONS_TX_DISABLE,
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+ .str = "txdisable",
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+ }, {
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+ .mask = SFP_OPTIONS_TX_FAULT,
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+ .val = SFP_OPTIONS_TX_FAULT,
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+ .str = "txfault",
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+ }, {
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+ .mask = SFP_OPTIONS_LOS_INVERTED,
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+ .val = SFP_OPTIONS_LOS_INVERTED,
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+ .str = "los-",
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+ }, {
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+ .mask = SFP_OPTIONS_LOS_NORMAL,
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+ .val = SFP_OPTIONS_LOS_NORMAL,
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+ .str = "los+",
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+ }, { }
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+};
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+
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+static const struct bitfield diagmon[] = {
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+ {
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+ .mask = SFP_DIAGMON_DDM,
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+ .val = SFP_DIAGMON_DDM,
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+ .str = "ddm",
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+ }, {
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+ .mask = SFP_DIAGMON_INT_CAL,
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+ .val = SFP_DIAGMON_INT_CAL,
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+ .str = "intcal",
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+ }, {
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+ .mask = SFP_DIAGMON_EXT_CAL,
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+ .val = SFP_DIAGMON_EXT_CAL,
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+ .str = "extcal",
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+ }, {
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+ .mask = SFP_DIAGMON_RXPWR_AVG,
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+ .val = SFP_DIAGMON_RXPWR_AVG,
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+ .str = "rxpwravg",
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+ }, { }
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+};
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+
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+static const char *sfp_bitfield(char *out, size_t outsz, const struct bitfield *bits, unsigned int val)
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+{
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+ char *p = out;
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+ int n;
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+
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+ *p = '\0';
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+ while (bits->mask) {
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+ if ((val & bits->mask) == bits->val) {
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+ n = snprintf(p, outsz, "%s%s",
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+ out != p ? ", " : "",
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+ bits->str);
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+ if (n == outsz)
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+ break;
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+ p += n;
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+ outsz -= n;
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+ }
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+ bits++;
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+ }
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+
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+ return out;
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+}
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+
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+static const char *sfp_connector(unsigned int connector)
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+{
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+ switch (connector) {
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+ case SFP_CONNECTOR_UNSPEC:
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+ return "unknown/unspecified";
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+ case SFP_CONNECTOR_SC:
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+ return "SC";
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+ case SFP_CONNECTOR_FIBERJACK:
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+ return "Fiberjack";
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+ case SFP_CONNECTOR_LC:
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+ return "LC";
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+ case SFP_CONNECTOR_MT_RJ:
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+ return "MT-RJ";
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+ case SFP_CONNECTOR_MU:
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+ return "MU";
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+ case SFP_CONNECTOR_SG:
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+ return "SG";
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+ case SFP_CONNECTOR_OPTICAL_PIGTAIL:
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+ return "Optical pigtail";
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+ case SFP_CONNECTOR_HSSDC_II:
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+ return "HSSDC II";
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+ case SFP_CONNECTOR_COPPER_PIGTAIL:
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+ return "Copper pigtail";
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+ default:
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+ return "unknown";
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+ }
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+}
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+
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+static const char *sfp_encoding(unsigned int encoding)
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+{
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+ switch (encoding) {
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+ case SFP_ENCODING_UNSPEC:
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+ return "unspecified";
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+ case SFP_ENCODING_8472_64B66B:
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+ return "64b66b";
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+ case SFP_ENCODING_8B10B:
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+ return "8b10b";
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+ case SFP_ENCODING_4B5B:
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+ return "4b5b";
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+ case SFP_ENCODING_NRZ:
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+ return "NRZ";
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+ case SFP_ENCODING_8472_MANCHESTER:
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+ return "MANCHESTER";
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+ default:
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+ return "unknown";
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+ }
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+}
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+
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/* Helpers */
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static void sfp_module_tx_disable(struct sfp *sfp)
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{
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@@ -1376,6 +1554,8 @@ static int sfp_sm_mod_probe(struct sfp *
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{
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/* SFP module inserted - read I2C data */
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struct sfp_eeprom_id id;
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+ char date[9];
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+ char options[80];
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bool cotsworks;
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u8 check;
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int ret;
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@@ -1432,12 +1612,87 @@ static int sfp_sm_mod_probe(struct sfp *
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sfp->id = id;
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- dev_info(sfp->dev, "module %.*s %.*s rev %.*s sn %.*s dc %.*s\n",
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+ date[0] = sfp->id.ext.datecode[4];
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+ date[1] = sfp->id.ext.datecode[5];
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+ date[2] = '-';
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+ date[3] = sfp->id.ext.datecode[2];
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+ date[4] = sfp->id.ext.datecode[3];
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+ date[5] = '-';
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+ date[6] = sfp->id.ext.datecode[0];
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+ date[7] = sfp->id.ext.datecode[1];
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+ date[8] = '\0';
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+
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+ dev_info(sfp->dev, "module %.*s %.*s rev %.*s sn %.*s dc %s\n",
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(int)sizeof(id.base.vendor_name), id.base.vendor_name,
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(int)sizeof(id.base.vendor_pn), id.base.vendor_pn,
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(int)sizeof(id.base.vendor_rev), id.base.vendor_rev,
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- (int)sizeof(id.ext.vendor_sn), id.ext.vendor_sn,
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- (int)sizeof(id.ext.datecode), id.ext.datecode);
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+ (int)sizeof(id.ext.vendor_sn), id.ext.vendor_sn, date);
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+ dev_info(sfp->dev, " %s connector, encoding %s, nominal bitrate %u.%uGbps +%u%% -%u%%\n",
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+ sfp_connector(sfp->id.base.connector),
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+ sfp_encoding(sfp->id.base.encoding),
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+ sfp->id.base.br_nominal / 10,
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+ sfp->id.base.br_nominal % 10,
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+ sfp->id.ext.br_max, sfp->id.ext.br_min);
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+ dev_info(sfp->dev, " 1000BaseSX%c 1000BaseLX%c 1000BaseCX%c 1000BaseT%c 100BaseLX%c 100BaseFX%c BaseBX10%c BasePX%c\n",
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+ sfp->id.base.e1000_base_sx ? '+' : '-',
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+ sfp->id.base.e1000_base_lx ? '+' : '-',
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+ sfp->id.base.e1000_base_cx ? '+' : '-',
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+ sfp->id.base.e1000_base_t ? '+' : '-',
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+ sfp->id.base.e100_base_lx ? '+' : '-',
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+ sfp->id.base.e100_base_fx ? '+' : '-',
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+ sfp->id.base.e_base_bx10 ? '+' : '-',
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+ sfp->id.base.e_base_px ? '+' : '-');
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+ dev_info(sfp->dev, " 10GBaseSR%c 10GBaseLR%c 10GBaseLRM%c 10GBaseER%c\n",
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+ sfp->id.base.e10g_base_sr ? '+' : '-',
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+ sfp->id.base.e10g_base_lr ? '+' : '-',
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+ sfp->id.base.e10g_base_lrm ? '+' : '-',
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+ sfp->id.base.e10g_base_er ? '+' : '-');
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+
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+ if (!sfp->id.base.sfp_ct_passive && !sfp->id.base.sfp_ct_active &&
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+ !sfp->id.base.e1000_base_t) {
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+ char len_9um[16], len_om[16];
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+
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+ dev_info(sfp->dev, " Wavelength %unm, fiber lengths:\n",
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+ be16_to_cpup(&sfp->id.base.optical_wavelength));
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+
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+ if (sfp->id.base.link_len[0] == 255)
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+ strcpy(len_9um, ">254km");
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+ else if (sfp->id.base.link_len[1] && sfp->id.base.link_len[1] != 255)
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+ sprintf(len_9um, "%um",
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+ sfp->id.base.link_len[1] * 100);
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+ else if (sfp->id.base.link_len[0])
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+ sprintf(len_9um, "%ukm", sfp->id.base.link_len[0]);
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+ else if (sfp->id.base.link_len[1] == 255)
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+ strcpy(len_9um, ">25.4km");
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+ else
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+ strcpy(len_9um, "unsupported");
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+
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+ dev_info(sfp->dev, " 9µm SM : %s\n", len_9um);
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+ dev_info(sfp->dev, " 62.5µm MM OM1: %s\n",
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+ sfp_link_len(len_om, sizeof(len_om),
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+ sfp->id.base.link_len[3], 10));
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+ dev_info(sfp->dev, " 50µm MM OM2: %s\n",
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+ sfp_link_len(len_om, sizeof(len_om),
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+ sfp->id.base.link_len[2], 10));
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+ dev_info(sfp->dev, " 50µm MM OM3: %s\n",
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+ sfp_link_len(len_om, sizeof(len_om),
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+ sfp->id.base.link_len[5], 10));
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+ dev_info(sfp->dev, " 50µm MM OM4: %s\n",
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+ sfp_link_len(len_om, sizeof(len_om),
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+ sfp->id.base.link_len[4], 10));
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+ } else {
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+ char len[16];
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+ dev_info(sfp->dev, " Copper length: %s\n",
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+ sfp_link_len(len, sizeof(len),
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+ sfp->id.base.link_len[4], 1));
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+ }
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+
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+ dev_info(sfp->dev, " Options: %s\n",
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+ sfp_bitfield(options, sizeof(options), sfp_options,
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+ be16_to_cpu(sfp->id.ext.options)));
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+ dev_info(sfp->dev, " Diagnostics: %s\n",
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+ sfp_bitfield(options, sizeof(options), diagmon,
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+ sfp->id.ext.diagmon));
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/* Check whether we support this module */
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if (!sfp->type->module_supported(&sfp->id)) {
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