Lines Matching refs:sfp
20 #include "sfp.h"
221 struct sfp {
231 unsigned int (*get_state)(struct sfp *);
232 void (*set_state)(struct sfp *, unsigned int);
233 int (*read)(struct sfp *, bool, u8, void *, size_t);
234 int (*write)(struct sfp *, bool, u8, void *, size_t);
308 { .compatible = "sff,sfp", .data = &sfp_data, },
315 static unsigned int sfp_gpio_get_state(struct sfp *sfp)
320 if (gpio_flags[i] != GPIOD_IN || !sfp->gpio[i])
323 v = gpiod_get_value_cansleep(sfp->gpio[i]);
331 static unsigned int sff_gpio_get_state(struct sfp *sfp)
333 return sfp_gpio_get_state(sfp) | SFP_F_PRESENT;
336 static void sfp_gpio_set_state(struct sfp *sfp, unsigned int state)
340 if (sfp->gpio[GPIO_TX_DISABLE])
341 gpiod_direction_output(sfp->gpio[GPIO_TX_DISABLE],
344 gpiod_direction_output(sfp->gpio[GPIO_RATE_SELECT],
348 if (sfp->gpio[GPIO_TX_DISABLE])
349 gpiod_direction_input(sfp->gpio[GPIO_TX_DISABLE]);
351 gpiod_direction_input(sfp->gpio[GPIO_RATE_SELECT]);
355 static int sfp_i2c_read(struct sfp *sfp, bool a2, u8 dev_addr, void *buf,
360 size_t block_size = sfp->i2c_block_size;
380 ret = i2c_transfer(sfp->i2c, msgs, ARRAY_SIZE(msgs));
395 static int sfp_i2c_write(struct sfp *sfp, bool a2, u8 dev_addr, void *buf,
412 ret = i2c_transfer(sfp->i2c, msgs, ARRAY_SIZE(msgs));
422 static int sfp_i2c_configure(struct sfp *sfp, struct i2c_adapter *i2c)
430 sfp->i2c = i2c;
431 sfp->read = sfp_i2c_read;
432 sfp->write = sfp_i2c_write;
434 i2c_mii = mdio_i2c_alloc(sfp->dev, i2c);
447 sfp->i2c_mii = i2c_mii;
453 static int sfp_read(struct sfp *sfp, bool a2, u8 addr, void *buf, size_t len)
455 return sfp->read(sfp, a2, addr, buf, len);
458 static int sfp_write(struct sfp *sfp, bool a2, u8 addr, void *buf, size_t len)
460 return sfp->write(sfp, a2, addr, buf, len);
463 static unsigned int sfp_soft_get_state(struct sfp *sfp)
469 ret = sfp_read(sfp, true, SFP_STATUS, &status, sizeof(status));
476 dev_err_ratelimited(sfp->dev,
480 state = sfp->state;
483 return state & sfp->state_soft_mask;
486 static void sfp_soft_set_state(struct sfp *sfp, unsigned int state)
490 if (sfp_read(sfp, true, SFP_STATUS, &status, sizeof(status)) ==
497 sfp_write(sfp, true, SFP_STATUS, &status, sizeof(status));
501 static void sfp_soft_start_poll(struct sfp *sfp)
503 const struct sfp_eeprom_id *id = &sfp->id;
505 sfp->state_soft_mask = 0;
507 !sfp->gpio[GPIO_TX_DISABLE])
508 sfp->state_soft_mask |= SFP_F_TX_DISABLE;
510 !sfp->gpio[GPIO_TX_FAULT])
511 sfp->state_soft_mask |= SFP_F_TX_FAULT;
513 !sfp->gpio[GPIO_LOS])
514 sfp->state_soft_mask |= SFP_F_LOS;
516 if (sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT) &&
517 !sfp->need_poll)
518 mod_delayed_work(system_wq, &sfp->poll, poll_jiffies);
521 static void sfp_soft_stop_poll(struct sfp *sfp)
523 sfp->state_soft_mask = 0;
526 static unsigned int sfp_get_state(struct sfp *sfp)
528 unsigned int state = sfp->get_state(sfp);
531 sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT))
532 state |= sfp_soft_get_state(sfp);
537 static void sfp_set_state(struct sfp *sfp, unsigned int state)
539 sfp->set_state(sfp, state);
542 sfp->state_soft_mask & SFP_F_TX_DISABLE)
543 sfp_soft_set_state(sfp, state);
562 const struct sfp *sfp = data;
575 if (!(sfp->id.ext.enhopts & SFP_ENHOPTS_ALARMWARN))
594 if (!(sfp->id.ext.enhopts & SFP_ENHOPTS_ALARMWARN))
613 if (!(sfp->id.ext.enhopts & SFP_ENHOPTS_ALARMWARN))
629 if (sfp->id.ext.diagmon & SFP_DIAGMON_EXT_CAL &&
641 if (!(sfp->id.ext.enhopts & SFP_ENHOPTS_ALARMWARN))
655 static int sfp_hwmon_read_sensor(struct sfp *sfp, int reg, long *value)
660 err = sfp_read(sfp, true, reg, &val, sizeof(val));
674 static void sfp_hwmon_calibrate(struct sfp *sfp, unsigned int slope, int offset,
677 if (sfp->id.ext.diagmon & SFP_DIAGMON_EXT_CAL)
681 static void sfp_hwmon_calibrate_temp(struct sfp *sfp, long *value)
683 sfp_hwmon_calibrate(sfp, be16_to_cpu(sfp->diag.cal_t_slope),
684 be16_to_cpu(sfp->diag.cal_t_offset), value);
692 static void sfp_hwmon_calibrate_vcc(struct sfp *sfp, long *value)
694 sfp_hwmon_calibrate(sfp, be16_to_cpu(sfp->diag.cal_v_slope),
695 be16_to_cpu(sfp->diag.cal_v_offset), value);
700 static void sfp_hwmon_calibrate_bias(struct sfp *sfp, long *value)
702 sfp_hwmon_calibrate(sfp, be16_to_cpu(sfp->diag.cal_txi_slope),
703 be16_to_cpu(sfp->diag.cal_txi_offset), value);
708 static void sfp_hwmon_calibrate_tx_power(struct sfp *sfp, long *value)
710 sfp_hwmon_calibrate(sfp, be16_to_cpu(sfp->diag.cal_txpwr_slope),
711 be16_to_cpu(sfp->diag.cal_txpwr_offset), value);
716 static int sfp_hwmon_read_temp(struct sfp *sfp, int reg, long *value)
720 err = sfp_hwmon_read_sensor(sfp, reg, value);
724 sfp_hwmon_calibrate_temp(sfp, value);
729 static int sfp_hwmon_read_vcc(struct sfp *sfp, int reg, long *value)
733 err = sfp_hwmon_read_sensor(sfp, reg, value);
737 sfp_hwmon_calibrate_vcc(sfp, value);
742 static int sfp_hwmon_read_bias(struct sfp *sfp, int reg, long *value)
746 err = sfp_hwmon_read_sensor(sfp, reg, value);
750 sfp_hwmon_calibrate_bias(sfp, value);
755 static int sfp_hwmon_read_tx_power(struct sfp *sfp, int reg, long *value)
759 err = sfp_hwmon_read_sensor(sfp, reg, value);
763 sfp_hwmon_calibrate_tx_power(sfp, value);
768 static int sfp_hwmon_read_rx_power(struct sfp *sfp, int reg, long *value)
772 err = sfp_hwmon_read_sensor(sfp, reg, value);
781 static int sfp_hwmon_temp(struct sfp *sfp, u32 attr, long *value)
788 return sfp_hwmon_read_temp(sfp, SFP_TEMP, value);
791 *value = be16_to_cpu(sfp->diag.temp_low_alarm);
792 sfp_hwmon_calibrate_temp(sfp, value);
796 *value = be16_to_cpu(sfp->diag.temp_low_warn);
797 sfp_hwmon_calibrate_temp(sfp, value);
800 *value = be16_to_cpu(sfp->diag.temp_high_warn);
801 sfp_hwmon_calibrate_temp(sfp, value);
805 *value = be16_to_cpu(sfp->diag.temp_high_alarm);
806 sfp_hwmon_calibrate_temp(sfp, value);
810 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status));
818 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status));
826 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status));
834 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status));
847 static int sfp_hwmon_vcc(struct sfp *sfp, u32 attr, long *value)
854 return sfp_hwmon_read_vcc(sfp, SFP_VCC, value);
857 *value = be16_to_cpu(sfp->diag.volt_low_alarm);
858 sfp_hwmon_calibrate_vcc(sfp, value);
862 *value = be16_to_cpu(sfp->diag.volt_low_warn);
863 sfp_hwmon_calibrate_vcc(sfp, value);
867 *value = be16_to_cpu(sfp->diag.volt_high_warn);
868 sfp_hwmon_calibrate_vcc(sfp, value);
872 *value = be16_to_cpu(sfp->diag.volt_high_alarm);
873 sfp_hwmon_calibrate_vcc(sfp, value);
877 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status));
885 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status));
893 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status));
901 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status));
914 static int sfp_hwmon_bias(struct sfp *sfp, u32 attr, long *value)
921 return sfp_hwmon_read_bias(sfp, SFP_TX_BIAS, value);
924 *value = be16_to_cpu(sfp->diag.bias_low_alarm);
925 sfp_hwmon_calibrate_bias(sfp, value);
929 *value = be16_to_cpu(sfp->diag.bias_low_warn);
930 sfp_hwmon_calibrate_bias(sfp, value);
934 *value = be16_to_cpu(sfp->diag.bias_high_warn);
935 sfp_hwmon_calibrate_bias(sfp, value);
939 *value = be16_to_cpu(sfp->diag.bias_high_alarm);
940 sfp_hwmon_calibrate_bias(sfp, value);
944 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status));
952 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status));
960 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status));
968 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status));
981 static int sfp_hwmon_tx_power(struct sfp *sfp, u32 attr, long *value)
988 return sfp_hwmon_read_tx_power(sfp, SFP_TX_POWER, value);
991 *value = be16_to_cpu(sfp->diag.txpwr_low_alarm);
992 sfp_hwmon_calibrate_tx_power(sfp, value);
996 *value = be16_to_cpu(sfp->diag.txpwr_low_warn);
997 sfp_hwmon_calibrate_tx_power(sfp, value);
1001 *value = be16_to_cpu(sfp->diag.txpwr_high_warn);
1002 sfp_hwmon_calibrate_tx_power(sfp, value);
1006 *value = be16_to_cpu(sfp->diag.txpwr_high_alarm);
1007 sfp_hwmon_calibrate_tx_power(sfp, value);
1011 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status));
1019 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status));
1027 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status));
1035 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status));
1048 static int sfp_hwmon_rx_power(struct sfp *sfp, u32 attr, long *value)
1055 return sfp_hwmon_read_rx_power(sfp, SFP_RX_POWER, value);
1058 *value = be16_to_cpu(sfp->diag.rxpwr_low_alarm);
1063 *value = be16_to_cpu(sfp->diag.rxpwr_low_warn);
1068 *value = be16_to_cpu(sfp->diag.rxpwr_high_warn);
1073 *value = be16_to_cpu(sfp->diag.rxpwr_high_alarm);
1078 err = sfp_read(sfp, true, SFP_ALARM1, &status, sizeof(status));
1086 err = sfp_read(sfp, true, SFP_WARN1, &status, sizeof(status));
1094 err = sfp_read(sfp, true, SFP_WARN1, &status, sizeof(status));
1102 err = sfp_read(sfp, true, SFP_ALARM1, &status, sizeof(status));
1118 struct sfp *sfp = dev_get_drvdata(dev);
1122 return sfp_hwmon_temp(sfp, attr, value);
1124 return sfp_hwmon_vcc(sfp, attr, value);
1126 return sfp_hwmon_bias(sfp, attr, value);
1130 return sfp_hwmon_tx_power(sfp, attr, value);
1132 return sfp_hwmon_rx_power(sfp, attr, value);
1294 struct sfp *sfp = container_of(work, struct sfp, hwmon_probe.work);
1303 if (sfp->i2c_block_size < 2) {
1304 dev_info(sfp->dev,
1306 dev_info(sfp->dev,
1311 err = sfp_read(sfp, true, 0, &sfp->diag, sizeof(sfp->diag));
1313 if (sfp->hwmon_tries--) {
1314 mod_delayed_work(system_wq, &sfp->hwmon_probe,
1317 dev_warn(sfp->dev, "hwmon probe failed: %d\n", err);
1322 sfp->hwmon_name = kstrdup(dev_name(sfp->dev), GFP_KERNEL);
1323 if (!sfp->hwmon_name) {
1324 dev_err(sfp->dev, "out of memory for hwmon name\n");
1328 for (i = 0; sfp->hwmon_name[i]; i++)
1329 if (hwmon_is_bad_char(sfp->hwmon_name[i]))
1330 sfp->hwmon_name[i] = '_';
1332 sfp->hwmon_dev = hwmon_device_register_with_info(sfp->dev,
1333 sfp->hwmon_name, sfp,
1336 if (IS_ERR(sfp->hwmon_dev))
1337 dev_err(sfp->dev, "failed to register hwmon device: %ld\n",
1338 PTR_ERR(sfp->hwmon_dev));
1341 static int sfp_hwmon_insert(struct sfp *sfp)
1343 if (sfp->id.ext.sff8472_compliance == SFP_SFF8472_COMPLIANCE_NONE)
1346 if (!(sfp->id.ext.diagmon & SFP_DIAGMON_DDM))
1349 if (sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE)
1355 mod_delayed_work(system_wq, &sfp->hwmon_probe, 1);
1356 sfp->hwmon_tries = R_PROBE_RETRY_SLOW;
1361 static void sfp_hwmon_remove(struct sfp *sfp)
1363 cancel_delayed_work_sync(&sfp->hwmon_probe);
1364 if (!IS_ERR_OR_NULL(sfp->hwmon_dev)) {
1365 hwmon_device_unregister(sfp->hwmon_dev);
1366 sfp->hwmon_dev = NULL;
1367 kfree(sfp->hwmon_name);
1371 static int sfp_hwmon_init(struct sfp *sfp)
1373 INIT_DELAYED_WORK(&sfp->hwmon_probe, sfp_hwmon_probe);
1378 static void sfp_hwmon_exit(struct sfp *sfp)
1380 cancel_delayed_work_sync(&sfp->hwmon_probe);
1383 static int sfp_hwmon_insert(struct sfp *sfp)
1388 static void sfp_hwmon_remove(struct sfp *sfp)
1392 static int sfp_hwmon_init(struct sfp *sfp)
1397 static void sfp_hwmon_exit(struct sfp *sfp)
1403 static void sfp_module_tx_disable(struct sfp *sfp)
1405 dev_dbg(sfp->dev, "tx disable %u -> %u\n",
1406 sfp->state & SFP_F_TX_DISABLE ? 1 : 0, 1);
1407 sfp->state |= SFP_F_TX_DISABLE;
1408 sfp_set_state(sfp, sfp->state);
1411 static void sfp_module_tx_enable(struct sfp *sfp)
1413 dev_dbg(sfp->dev, "tx disable %u -> %u\n",
1414 sfp->state & SFP_F_TX_DISABLE ? 1 : 0, 0);
1415 sfp->state &= ~SFP_F_TX_DISABLE;
1416 sfp_set_state(sfp, sfp->state);
1419 static void sfp_module_tx_fault_reset(struct sfp *sfp)
1421 unsigned int state = sfp->state;
1426 sfp_set_state(sfp, state | SFP_F_TX_DISABLE);
1430 sfp_set_state(sfp, state);
1434 static void sfp_sm_set_timer(struct sfp *sfp, unsigned int timeout)
1437 mod_delayed_work(system_power_efficient_wq, &sfp->timeout,
1440 cancel_delayed_work(&sfp->timeout);
1443 static void sfp_sm_next(struct sfp *sfp, unsigned int state,
1446 sfp->sm_state = state;
1447 sfp_sm_set_timer(sfp, timeout);
1450 static void sfp_sm_mod_next(struct sfp *sfp, unsigned int state,
1453 sfp->sm_mod_state = state;
1454 sfp_sm_set_timer(sfp, timeout);
1457 static void sfp_sm_phy_detach(struct sfp *sfp)
1459 sfp_remove_phy(sfp->sfp_bus);
1460 phy_device_remove(sfp->mod_phy);
1461 phy_device_free(sfp->mod_phy);
1462 sfp->mod_phy = NULL;
1465 static int sfp_sm_probe_phy(struct sfp *sfp, bool is_c45)
1470 phy = get_phy_device(sfp->i2c_mii, SFP_PHY_ADDR, is_c45);
1474 dev_err(sfp->dev, "mdiobus scan returned %ld\n", PTR_ERR(phy));
1481 dev_err(sfp->dev, "phy_device_register failed: %d\n", err);
1485 err = sfp_add_phy(sfp->sfp_bus, phy);
1489 dev_err(sfp->dev, "sfp_add_phy failed: %d\n", err);
1493 sfp->mod_phy = phy;
1498 static void sfp_sm_link_up(struct sfp *sfp)
1500 sfp_link_up(sfp->sfp_bus);
1501 sfp_sm_next(sfp, SFP_S_LINK_UP, 0);
1504 static void sfp_sm_link_down(struct sfp *sfp)
1506 sfp_link_down(sfp->sfp_bus);
1509 static void sfp_sm_link_check_los(struct sfp *sfp)
1513 __be16 los_options = sfp->id.ext.options & (los_inverted | los_normal);
1521 los = !(sfp->state & SFP_F_LOS);
1523 los = !!(sfp->state & SFP_F_LOS);
1526 sfp_sm_next(sfp, SFP_S_WAIT_LOS, 0);
1528 sfp_sm_link_up(sfp);
1531 static bool sfp_los_event_active(struct sfp *sfp, unsigned int event)
1535 __be16 los_options = sfp->id.ext.options & (los_inverted | los_normal);
1541 static bool sfp_los_event_inactive(struct sfp *sfp, unsigned int event)
1545 __be16 los_options = sfp->id.ext.options & (los_inverted | los_normal);
1551 static void sfp_sm_fault(struct sfp *sfp, unsigned int next_state, bool warn)
1553 if (sfp->sm_fault_retries && !--sfp->sm_fault_retries) {
1554 dev_err(sfp->dev,
1556 sfp_sm_next(sfp, SFP_S_TX_DISABLE, 0);
1559 dev_err(sfp->dev, "module transmit fault indicated\n");
1561 sfp_sm_next(sfp, next_state, T_FAULT_RECOVER);
1576 static int sfp_sm_probe_for_phy(struct sfp *sfp)
1580 switch (sfp->id.base.extended_cc) {
1585 err = sfp_sm_probe_phy(sfp, true);
1589 if (sfp->id.base.e1000_base_t)
1590 err = sfp_sm_probe_phy(sfp, false);
1596 static int sfp_module_parse_power(struct sfp *sfp)
1601 if (sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_POWER_DECL))
1603 if (sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_HIGH_POWER_LEVEL))
1606 supports_a2 = sfp->id.ext.sff8472_compliance !=
1608 sfp->id.ext.diagmon & SFP_DIAGMON_DDM;
1610 if (power_mW > sfp->max_power_mW) {
1617 dev_err(sfp->dev,
1622 dev_warn(sfp->dev,
1631 sfp->module_power_mW = power_mW;
1647 if (sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE) {
1648 dev_warn(sfp->dev,
1654 sfp->module_power_mW = power_mW;
1659 static int sfp_sm_mod_hpower(struct sfp *sfp, bool enable)
1664 err = sfp_read(sfp, true, SFP_EXT_STATUS, &val, sizeof(val));
1666 dev_err(sfp->dev, "Failed to read EEPROM: %d\n", err);
1682 err = sfp_write(sfp, true, SFP_EXT_STATUS, &val, sizeof(val));
1684 dev_err(sfp->dev, "Failed to write EEPROM: %d\n", err);
1689 dev_info(sfp->dev, "Module switched to %u.%uW power level\n",
1690 sfp->module_power_mW / 1000,
1691 (sfp->module_power_mW / 100) % 10);
1707 static bool sfp_id_needs_byte_io(struct sfp *sfp, void *buf, size_t len)
1709 size_t i, block_size = sfp->i2c_block_size;
1722 static int sfp_cotsworks_fixup_check(struct sfp *sfp, struct sfp_eeprom_id *id)
1730 dev_warn(sfp->dev, "Rewriting fiber module EEPROM with corrected values\n");
1734 err = sfp_write(sfp, false, SFP_PHYS_ID, &id->base, 3);
1736 dev_err(sfp->dev, "Failed to rewrite module EEPROM: %d\n", err);
1745 err = sfp_write(sfp, false, SFP_CC_BASE, &check, 1);
1747 dev_err(sfp->dev, "Failed to update base structure checksum in fiber module EEPROM: %d\n", err);
1754 static int sfp_sm_mod_probe(struct sfp *sfp, bool report)
1763 sfp->i2c_block_size = SFP_EEPROM_BLOCK_SIZE;
1765 ret = sfp_read(sfp, false, 0, &id.base, sizeof(id.base));
1768 dev_err(sfp->dev, "failed to read EEPROM: %d\n", ret);
1773 dev_err(sfp->dev, "EEPROM short read: %d\n", ret);
1783 if (sfp_id_needs_byte_io(sfp, &id.base, sizeof(id.base))) {
1784 dev_info(sfp->dev,
1786 dev_info(sfp->dev,
1788 sfp->i2c_block_size = 1;
1790 ret = sfp_read(sfp, false, 0, &id.base, sizeof(id.base));
1793 dev_err(sfp->dev, "failed to read EEPROM: %d\n",
1799 dev_err(sfp->dev, "EEPROM short read: %d\n", ret);
1816 ret = sfp_cotsworks_fixup_check(sfp, &id);
1825 dev_warn(sfp->dev,
1829 dev_err(sfp->dev,
1832 print_hex_dump(KERN_ERR, "sfp EE: ", DUMP_PREFIX_OFFSET,
1838 ret = sfp_read(sfp, false, SFP_CC_BASE + 1, &id.ext, sizeof(id.ext));
1841 dev_err(sfp->dev, "failed to read EEPROM: %d\n", ret);
1846 dev_err(sfp->dev, "EEPROM short read: %d\n", ret);
1853 dev_warn(sfp->dev,
1857 dev_err(sfp->dev,
1860 print_hex_dump(KERN_ERR, "sfp EE: ", DUMP_PREFIX_OFFSET,
1866 sfp->id = id;
1868 dev_info(sfp->dev, "module %.*s %.*s rev %.*s sn %.*s dc %.*s\n",
1876 if (!sfp->type->module_supported(&id)) {
1877 dev_err(sfp->dev,
1879 sfp->id.base.phys_id, sfp->id.base.phys_ext_id);
1884 if (sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE)
1885 dev_warn(sfp->dev,
1889 ret = sfp_module_parse_power(sfp);
1895 sfp->module_t_start_up = T_START_UP_BAD_GPON;
1897 sfp->module_t_start_up = T_START_UP;
1901 sfp->tx_fault_ignore = true;
1903 sfp->tx_fault_ignore = false;
1908 static void sfp_sm_mod_remove(struct sfp *sfp)
1910 if (sfp->sm_mod_state > SFP_MOD_WAITDEV)
1911 sfp_module_remove(sfp->sfp_bus);
1913 sfp_hwmon_remove(sfp);
1915 memset(&sfp->id, 0, sizeof(sfp->id));
1916 sfp->module_power_mW = 0;
1918 dev_info(sfp->dev, "module removed\n");
1922 static void sfp_sm_device(struct sfp *sfp, unsigned int event)
1924 switch (sfp->sm_dev_state) {
1927 sfp->sm_dev_state = SFP_DEV_DOWN;
1932 sfp->sm_dev_state = SFP_DEV_DETACHED;
1934 sfp->sm_dev_state = SFP_DEV_UP;
1939 sfp->sm_dev_state = SFP_DEV_DETACHED;
1941 sfp->sm_dev_state = SFP_DEV_DOWN;
1949 static void sfp_sm_module(struct sfp *sfp, unsigned int event)
1955 if (sfp->sm_mod_state > SFP_MOD_PROBE)
1956 sfp_sm_mod_remove(sfp);
1957 sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0);
1962 if (sfp->sm_dev_state < SFP_DEV_DOWN &&
1963 sfp->sm_mod_state > SFP_MOD_WAITDEV) {
1964 if (sfp->module_power_mW > 1000 &&
1965 sfp->sm_mod_state > SFP_MOD_HPOWER)
1966 sfp_sm_mod_hpower(sfp, false);
1967 sfp_sm_mod_next(sfp, SFP_MOD_WAITDEV, 0);
1971 switch (sfp->sm_mod_state) {
1974 sfp_sm_mod_next(sfp, SFP_MOD_PROBE, T_SERIAL);
1975 sfp->sm_mod_tries_init = R_PROBE_RETRY_INIT;
1976 sfp->sm_mod_tries = R_PROBE_RETRY_SLOW;
1985 err = sfp_sm_mod_probe(sfp, sfp->sm_mod_tries == 1);
1987 if (sfp->sm_mod_tries_init &&
1988 --sfp->sm_mod_tries_init) {
1989 sfp_sm_set_timer(sfp, T_PROBE_RETRY_INIT);
1991 } else if (sfp->sm_mod_tries && --sfp->sm_mod_tries) {
1992 if (sfp->sm_mod_tries == R_PROBE_RETRY_SLOW - 1)
1993 dev_warn(sfp->dev,
1995 sfp_sm_set_timer(sfp, T_PROBE_RETRY_SLOW);
2000 sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0);
2004 err = sfp_hwmon_insert(sfp);
2006 dev_warn(sfp->dev, "hwmon probe failed: %d\n", err);
2008 sfp_sm_mod_next(sfp, SFP_MOD_WAITDEV, 0);
2012 if (sfp->sm_dev_state < SFP_DEV_DOWN)
2016 err = sfp_module_insert(sfp->sfp_bus, &sfp->id);
2018 sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0);
2023 if (sfp->module_power_mW <= 1000)
2026 sfp_sm_mod_next(sfp, SFP_MOD_HPOWER, 0);
2030 err = sfp_sm_mod_hpower(sfp, true);
2033 sfp_module_remove(sfp->sfp_bus);
2034 sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0);
2036 sfp_sm_set_timer(sfp, T_PROBE_RETRY_INIT);
2041 sfp_sm_mod_next(sfp, SFP_MOD_WAITPWR, T_HPOWER_LEVEL);
2050 sfp_sm_mod_next(sfp, SFP_MOD_PRESENT, 0);
2059 static void sfp_sm_main(struct sfp *sfp, unsigned int event)
2065 if (sfp->sm_state != SFP_S_DOWN &&
2066 (sfp->sm_mod_state != SFP_MOD_PRESENT ||
2067 sfp->sm_dev_state != SFP_DEV_UP)) {
2068 if (sfp->sm_state == SFP_S_LINK_UP &&
2069 sfp->sm_dev_state == SFP_DEV_UP)
2070 sfp_sm_link_down(sfp);
2071 if (sfp->sm_state > SFP_S_INIT)
2072 sfp_module_stop(sfp->sfp_bus);
2073 if (sfp->mod_phy)
2074 sfp_sm_phy_detach(sfp);
2075 sfp_module_tx_disable(sfp);
2076 sfp_soft_stop_poll(sfp);
2077 sfp_sm_next(sfp, SFP_S_DOWN, 0);
2082 switch (sfp->sm_state) {
2084 if (sfp->sm_mod_state != SFP_MOD_PRESENT ||
2085 sfp->sm_dev_state != SFP_DEV_UP)
2088 if (!(sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE))
2089 sfp_soft_start_poll(sfp);
2091 sfp_module_tx_enable(sfp);
2094 sfp->sm_fault_retries = N_FAULT_INIT;
2100 sfp_sm_next(sfp, SFP_S_WAIT, T_WAIT);
2107 if (sfp->state & SFP_F_TX_FAULT) {
2113 timeout = sfp->module_t_start_up;
2119 sfp_sm_next(sfp, SFP_S_INIT, timeout);
2129 if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) {
2133 sfp_sm_fault(sfp, SFP_S_INIT_TX_FAULT,
2134 sfp->sm_fault_retries == N_FAULT_INIT);
2137 sfp->sm_phy_retries = R_PHY_RETRY;
2149 ret = sfp_sm_probe_for_phy(sfp);
2151 if (--sfp->sm_phy_retries) {
2152 sfp_sm_next(sfp, SFP_S_INIT_PHY, T_PHY_RETRY);
2155 dev_info(sfp->dev, "no PHY detected\n");
2158 sfp_sm_next(sfp, SFP_S_FAIL, 0);
2161 if (sfp_module_start(sfp->sfp_bus)) {
2162 sfp_sm_next(sfp, SFP_S_FAIL, 0);
2165 sfp_sm_link_check_los(sfp);
2168 sfp->sm_fault_retries = N_FAULT;
2173 sfp_module_tx_fault_reset(sfp);
2174 sfp_sm_next(sfp, SFP_S_INIT, sfp->module_t_start_up);
2180 sfp_sm_fault(sfp, SFP_S_TX_FAULT, true);
2181 else if (sfp_los_event_inactive(sfp, event))
2182 sfp_sm_link_up(sfp);
2187 sfp_sm_link_down(sfp);
2188 sfp_sm_fault(sfp, SFP_S_TX_FAULT, true);
2189 } else if (sfp_los_event_active(sfp, event)) {
2190 sfp_sm_link_down(sfp);
2191 sfp_sm_next(sfp, SFP_S_WAIT_LOS, 0);
2197 sfp_module_tx_fault_reset(sfp);
2198 sfp_sm_next(sfp, SFP_S_REINIT, sfp->module_t_start_up);
2203 if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) {
2204 sfp_sm_fault(sfp, SFP_S_TX_FAULT, false);
2206 dev_info(sfp->dev, "module transmit fault recovered\n");
2207 sfp_sm_link_check_los(sfp);
2216 static void sfp_sm_event(struct sfp *sfp, unsigned int event)
2218 mutex_lock(&sfp->sm_mutex);
2220 dev_dbg(sfp->dev, "SM: enter %s:%s:%s event %s\n",
2221 mod_state_to_str(sfp->sm_mod_state),
2222 dev_state_to_str(sfp->sm_dev_state),
2223 sm_state_to_str(sfp->sm_state),
2226 sfp_sm_device(sfp, event);
2227 sfp_sm_module(sfp, event);
2228 sfp_sm_main(sfp, event);
2230 dev_dbg(sfp->dev, "SM: exit %s:%s:%s\n",
2231 mod_state_to_str(sfp->sm_mod_state),
2232 dev_state_to_str(sfp->sm_dev_state),
2233 sm_state_to_str(sfp->sm_state));
2235 mutex_unlock(&sfp->sm_mutex);
2238 static void sfp_attach(struct sfp *sfp)
2240 sfp_sm_event(sfp, SFP_E_DEV_ATTACH);
2243 static void sfp_detach(struct sfp *sfp)
2245 sfp_sm_event(sfp, SFP_E_DEV_DETACH);
2248 static void sfp_start(struct sfp *sfp)
2250 sfp_sm_event(sfp, SFP_E_DEV_UP);
2253 static void sfp_stop(struct sfp *sfp)
2255 sfp_sm_event(sfp, SFP_E_DEV_DOWN);
2258 static int sfp_module_info(struct sfp *sfp, struct ethtool_modinfo *modinfo)
2262 if (sfp->id.ext.sff8472_compliance &&
2263 !(sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE)) {
2273 static int sfp_module_eeprom(struct sfp *sfp, struct ethtool_eeprom *ee,
2288 ret = sfp_read(sfp, false, first, data, len);
2300 ret = sfp_read(sfp, true, first, data, len);
2318 struct sfp *sfp = container_of(work, struct sfp, timeout.work);
2321 sfp_sm_event(sfp, SFP_E_TIMEOUT);
2325 static void sfp_check_state(struct sfp *sfp)
2329 mutex_lock(&sfp->st_mutex);
2330 state = sfp_get_state(sfp);
2331 changed = state ^ sfp->state;
2332 if (sfp->tx_fault_ignore)
2339 dev_dbg(sfp->dev, "%s %u -> %u\n", gpio_of_names[i],
2340 !!(sfp->state & BIT(i)), !!(state & BIT(i)));
2342 state |= sfp->state & (SFP_F_TX_DISABLE | SFP_F_RATE_SELECT);
2343 sfp->state = state;
2347 sfp_sm_event(sfp, state & SFP_F_PRESENT ?
2351 sfp_sm_event(sfp, state & SFP_F_TX_FAULT ?
2355 sfp_sm_event(sfp, state & SFP_F_LOS ?
2358 mutex_unlock(&sfp->st_mutex);
2363 struct sfp *sfp = data;
2365 sfp_check_state(sfp);
2372 struct sfp *sfp = container_of(work, struct sfp, poll.work);
2374 sfp_check_state(sfp);
2376 if (sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT) ||
2377 sfp->need_poll)
2378 mod_delayed_work(system_wq, &sfp->poll, poll_jiffies);
2381 static struct sfp *sfp_alloc(struct device *dev)
2383 struct sfp *sfp;
2385 sfp = kzalloc(sizeof(*sfp), GFP_KERNEL);
2386 if (!sfp)
2389 sfp->dev = dev;
2390 sfp->i2c_block_size = SFP_EEPROM_BLOCK_SIZE;
2392 mutex_init(&sfp->sm_mutex);
2393 mutex_init(&sfp->st_mutex);
2394 INIT_DELAYED_WORK(&sfp->poll, sfp_poll);
2395 INIT_DELAYED_WORK(&sfp->timeout, sfp_timeout);
2397 sfp_hwmon_init(sfp);
2399 return sfp;
2404 struct sfp *sfp = data;
2406 sfp_hwmon_exit(sfp);
2408 cancel_delayed_work_sync(&sfp->poll);
2409 cancel_delayed_work_sync(&sfp->timeout);
2410 if (sfp->i2c_mii) {
2411 mdiobus_unregister(sfp->i2c_mii);
2412 mdiobus_free(sfp->i2c_mii);
2414 if (sfp->i2c)
2415 i2c_put_adapter(sfp->i2c);
2416 kfree(sfp);
2424 struct sfp *sfp;
2427 sfp = sfp_alloc(&pdev->dev);
2428 if (IS_ERR(sfp))
2429 return PTR_ERR(sfp);
2431 platform_set_drvdata(pdev, sfp);
2433 err = devm_add_action_or_reset(sfp->dev, sfp_cleanup, sfp);
2437 sff = sfp->type = &sfp_data;
2448 sff = sfp->type = id->data;
2452 dev_err(sfp->dev, "missing 'i2c-bus' property\n");
2480 err = sfp_i2c_configure(sfp, i2c);
2488 sfp->gpio[i] = devm_gpiod_get_optional(sfp->dev,
2490 if (IS_ERR(sfp->gpio[i]))
2491 return PTR_ERR(sfp->gpio[i]);
2494 sfp->get_state = sfp_gpio_get_state;
2495 sfp->set_state = sfp_gpio_set_state;
2498 if (!(sfp->gpio[GPIO_MODDEF0]))
2499 sfp->get_state = sff_gpio_get_state;
2502 &sfp->max_power_mW);
2503 if (!sfp->max_power_mW)
2504 sfp->max_power_mW = 1000;
2506 dev_info(sfp->dev, "Host maximum power %u.%uW\n",
2507 sfp->max_power_mW / 1000, (sfp->max_power_mW / 100) % 10);
2512 sfp->state = sfp_get_state(sfp) | SFP_F_TX_DISABLE;
2514 if (sfp->gpio[GPIO_RATE_SELECT] &&
2515 gpiod_get_value_cansleep(sfp->gpio[GPIO_RATE_SELECT]))
2516 sfp->state |= SFP_F_RATE_SELECT;
2517 sfp_set_state(sfp, sfp->state);
2518 sfp_module_tx_disable(sfp);
2519 if (sfp->state & SFP_F_PRESENT) {
2521 sfp_sm_event(sfp, SFP_E_INSERT);
2526 if (gpio_flags[i] != GPIOD_IN || !sfp->gpio[i])
2529 sfp->gpio_irq[i] = gpiod_to_irq(sfp->gpio[i]);
2530 if (sfp->gpio_irq[i] < 0) {
2531 sfp->gpio_irq[i] = 0;
2532 sfp->need_poll = true;
2536 sfp_irq_name = devm_kasprintf(sfp->dev, GFP_KERNEL,
2537 "%s-%s", dev_name(sfp->dev),
2543 err = devm_request_threaded_irq(sfp->dev, sfp->gpio_irq[i],
2548 sfp_irq_name, sfp);
2550 sfp->gpio_irq[i] = 0;
2551 sfp->need_poll = true;
2555 if (sfp->need_poll)
2556 mod_delayed_work(system_wq, &sfp->poll, poll_jiffies);
2563 if (!sfp->gpio[GPIO_TX_DISABLE])
2564 dev_warn(sfp->dev,
2567 sfp->sfp_bus = sfp_register_socket(sfp->dev, sfp, &sfp_module_ops);
2568 if (!sfp->sfp_bus)
2576 struct sfp *sfp = platform_get_drvdata(pdev);
2578 sfp_unregister_socket(sfp->sfp_bus);
2581 sfp_sm_event(sfp, SFP_E_REMOVE);
2589 struct sfp *sfp = platform_get_drvdata(pdev);
2593 if (!sfp->gpio_irq[i])
2596 devm_free_irq(sfp->dev, sfp->gpio_irq[i], sfp);
2599 cancel_delayed_work_sync(&sfp->poll);
2600 cancel_delayed_work_sync(&sfp->timeout);
2608 .name = "sfp",
2627 MODULE_ALIAS("platform:sfp");