From 73472c830eae5fce2107f7f086f1e6827d215caf Mon Sep 17 00:00:00 2001 From: "Russell King (Oracle)" Date: Tue, 13 Sep 2022 20:06:48 +0100 Subject: [PATCH 1/1] net: sfp: add support for HALNy GPON SFP Add a quirk for the HALNy HL-GSFP module, which appears to have an inverted RX_LOS signal, and maybe uses TX_FAULT as a serial port transmit pin. Rather than use these hardware signals, switch to using software polling for these status signals. Signed-off-by: Russell King (Oracle) Signed-off-by: Jakub Kicinski --- drivers/net/phy/sfp-bus.c | 2 +- drivers/net/phy/sfp.c | 21 ++++++++++++++++++--- 2 files changed, 19 insertions(+), 4 deletions(-) --- a/drivers/net/phy/sfp-bus.c +++ b/drivers/net/phy/sfp-bus.c @@ -283,7 +283,7 @@ void sfp_parse_support(struct sfp_bus *b phylink_set(modes, 2500baseX_Full); } - if (bus->sfp_quirk) + if (bus->sfp_quirk && bus->sfp_quirk->modes) bus->sfp_quirk->modes(id, modes); linkmode_or(support, support, modes); --- a/drivers/net/phy/sfp.c +++ b/drivers/net/phy/sfp.c @@ -327,6 +327,15 @@ static void sfp_fixup_ignore_tx_fault(st sfp->tx_fault_ignore = true; } +static void sfp_fixup_halny_gsfp(struct sfp *sfp) +{ + /* Ignore the TX_FAULT and LOS signals on this module. + * these are possibly used for other purposes on this + * module, e.g. a serial port. + */ + sfp->state_hw_mask &= ~(SFP_F_TX_FAULT | SFP_F_LOS); +} + static void sfp_quirk_2500basex(const struct sfp_eeprom_id *id, unsigned long *modes) { @@ -359,6 +368,10 @@ static const struct sfp_quirk sfp_quirks .modes = sfp_quirk_2500basex, .fixup = sfp_fixup_long_startup, }, { + .vendor = "HALNy", + .part = "HL-GSFP", + .fixup = sfp_fixup_halny_gsfp, + }, { // Huawei MA5671A can operate at 2500base-X, but report 1.2GBd // NRZ in their EEPROM .vendor = "HUAWEI", @@ -375,16 +388,18 @@ static const struct sfp_quirk sfp_quirks .vendor = "UBNT", .part = "UF-INSTANT", .modes = sfp_quirk_ubnt_uf_instant, - }, + } }; static size_t sfp_strlen(const char *str, size_t maxlen) { size_t size, i; - /* Trailing characters should be filled with space chars */ + /* Trailing characters should be filled with space chars, but + * some manufacturers can't read SFF-8472 and use NUL. + */ for (i = 0, size = 0; i < maxlen; i++) - if (str[i] != ' ') + if (str[i] != ' ' && str[i] != '\0') size = i + 1; return size;