Lines Matching full:sfp
19 #include "sfp.h"
170 * on board (for a copper SFP) time to initialise.
196 /* SFP module presence detection is poor: the three MOD DEF signals are
210 /* SFP modules appear to always have their PHY configured for bus address
212 * RollBall SFPs access phy via SFP Enhanced Digital Diagnostic Interface
219 * at a time. Some SFP modules and also some Linux I2C drivers do not like
229 struct sfp { struct
240 unsigned int (*get_state)(struct sfp *); argument
241 void (*set_state)(struct sfp *, unsigned int); argument
242 int (*read)(struct sfp *, bool, u8, void *, size_t); argument
243 int (*write)(struct sfp *, bool, u8, void *, size_t); argument
318 /* SFP GPON module Ubiquiti U-Fiber Instant has in its EEPROM stored in sfp_module_supported()
319 * phys id SFF instead of SFP. Therefore mark this module explicitly in sfp_module_supported()
339 { .compatible = "sff,sfp", .data = &sfp_data, },
344 static void sfp_fixup_long_startup(struct sfp *sfp) in sfp_fixup_long_startup() argument
346 sfp->module_t_start_up = T_START_UP_BAD_GPON; in sfp_fixup_long_startup()
349 static void sfp_fixup_ignore_los(struct sfp *sfp) in sfp_fixup_ignore_los() argument
352 sfp->state_ignore_mask |= SFP_F_LOS; in sfp_fixup_ignore_los()
354 sfp->id.ext.options &= ~cpu_to_be16(SFP_OPTIONS_LOS_INVERTED | in sfp_fixup_ignore_los()
358 static void sfp_fixup_ignore_tx_fault(struct sfp *sfp) in sfp_fixup_ignore_tx_fault() argument
360 sfp->state_ignore_mask |= SFP_F_TX_FAULT; in sfp_fixup_ignore_tx_fault()
363 static void sfp_fixup_nokia(struct sfp *sfp) in sfp_fixup_nokia() argument
365 sfp_fixup_long_startup(sfp); in sfp_fixup_nokia()
366 sfp_fixup_ignore_los(sfp); in sfp_fixup_nokia()
370 static void sfp_fixup_10gbaset_30m(struct sfp *sfp) in sfp_fixup_10gbaset_30m() argument
372 sfp->id.base.connector = SFF8024_CONNECTOR_RJ45; in sfp_fixup_10gbaset_30m()
373 sfp->id.base.extended_cc = SFF8024_ECC_10GBASE_T_SR; in sfp_fixup_10gbaset_30m()
376 static void sfp_fixup_rollball(struct sfp *sfp) in sfp_fixup_rollball() argument
378 sfp->mdio_protocol = MDIO_I2C_ROLLBALL; in sfp_fixup_rollball()
385 sfp->phy_t_retry = msecs_to_jiffies(1000); in sfp_fixup_rollball()
388 static void sfp_fixup_fs_10gt(struct sfp *sfp) in sfp_fixup_fs_10gt() argument
390 sfp_fixup_10gbaset_30m(sfp); in sfp_fixup_fs_10gt()
391 sfp_fixup_rollball(sfp); in sfp_fixup_fs_10gt()
397 sfp->module_t_wait = msecs_to_jiffies(4000); in sfp_fixup_fs_10gt()
400 static void sfp_fixup_halny_gsfp(struct sfp *sfp) in sfp_fixup_halny_gsfp() argument
406 sfp->state_hw_mask &= ~(SFP_F_TX_FAULT | SFP_F_LOS); in sfp_fixup_halny_gsfp()
409 static void sfp_fixup_rollball_cc(struct sfp *sfp) in sfp_fixup_rollball_cc() argument
411 sfp_fixup_rollball(sfp); in sfp_fixup_rollball_cc()
416 sfp->id.base.extended_cc = SFF8024_ECC_10GBASE_T_SFI; in sfp_fixup_rollball_cc()
438 /* Copper 2.5G SFP */ in sfp_quirk_oem_2_5g()
471 // Fiberstore SFP-10G-T doesn't identify as copper, and uses the
473 SFP_QUIRK_F("FS", "SFP-10G-T", sfp_fixup_fs_10gt),
492 SFP_QUIRK_M("FS", "SFP-2.5G-T", sfp_quirk_oem_2_5g),
505 SFP_QUIRK_F("OEM", "SFP-10G-T", sfp_fixup_rollball_cc),
506 SFP_QUIRK_M("OEM", "SFP-2.5G-T", sfp_quirk_oem_2_5g),
555 static unsigned int sfp_gpio_get_state(struct sfp *sfp) in sfp_gpio_get_state() argument
560 if (gpio_flags[i] != GPIOD_IN || !sfp->gpio[i]) in sfp_gpio_get_state()
563 v = gpiod_get_value_cansleep(sfp->gpio[i]); in sfp_gpio_get_state()
571 static unsigned int sff_gpio_get_state(struct sfp *sfp) in sff_gpio_get_state() argument
573 return sfp_gpio_get_state(sfp) | SFP_F_PRESENT; in sff_gpio_get_state()
576 static void sfp_gpio_set_state(struct sfp *sfp, unsigned int state) in sfp_gpio_set_state() argument
582 drive = sfp->state_hw_drive; in sfp_gpio_set_state()
587 if (sfp->gpio[GPIO_TX_DISABLE]) { in sfp_gpio_set_state()
589 gpiod_direction_output(sfp->gpio[GPIO_TX_DISABLE], in sfp_gpio_set_state()
592 gpiod_direction_input(sfp->gpio[GPIO_TX_DISABLE]); in sfp_gpio_set_state()
595 if (sfp->gpio[GPIO_RS0]) { in sfp_gpio_set_state()
597 gpiod_direction_output(sfp->gpio[GPIO_RS0], in sfp_gpio_set_state()
600 gpiod_direction_input(sfp->gpio[GPIO_RS0]); in sfp_gpio_set_state()
603 if (sfp->gpio[GPIO_RS1]) { in sfp_gpio_set_state()
605 gpiod_direction_output(sfp->gpio[GPIO_RS1], in sfp_gpio_set_state()
608 gpiod_direction_input(sfp->gpio[GPIO_RS1]); in sfp_gpio_set_state()
612 static int sfp_i2c_read(struct sfp *sfp, bool a2, u8 dev_addr, void *buf, in sfp_i2c_read() argument
617 size_t block_size = sfp->i2c_block_size; in sfp_i2c_read()
637 ret = i2c_transfer(sfp->i2c, msgs, ARRAY_SIZE(msgs)); in sfp_i2c_read()
652 static int sfp_i2c_write(struct sfp *sfp, bool a2, u8 dev_addr, void *buf, in sfp_i2c_write() argument
669 ret = i2c_transfer(sfp->i2c, msgs, ARRAY_SIZE(msgs)); in sfp_i2c_write()
679 static int sfp_i2c_configure(struct sfp *sfp, struct i2c_adapter *i2c) in sfp_i2c_configure() argument
684 sfp->i2c = i2c; in sfp_i2c_configure()
685 sfp->read = sfp_i2c_read; in sfp_i2c_configure()
686 sfp->write = sfp_i2c_write; in sfp_i2c_configure()
691 static int sfp_i2c_mdiobus_create(struct sfp *sfp) in sfp_i2c_mdiobus_create() argument
696 i2c_mii = mdio_i2c_alloc(sfp->dev, sfp->i2c, sfp->mdio_protocol); in sfp_i2c_mdiobus_create()
700 i2c_mii->name = "SFP I2C Bus"; in sfp_i2c_mdiobus_create()
709 sfp->i2c_mii = i2c_mii; in sfp_i2c_mdiobus_create()
714 static void sfp_i2c_mdiobus_destroy(struct sfp *sfp) in sfp_i2c_mdiobus_destroy() argument
716 mdiobus_unregister(sfp->i2c_mii); in sfp_i2c_mdiobus_destroy()
717 sfp->i2c_mii = NULL; in sfp_i2c_mdiobus_destroy()
721 static int sfp_read(struct sfp *sfp, bool a2, u8 addr, void *buf, size_t len) in sfp_read() argument
723 return sfp->read(sfp, a2, addr, buf, len); in sfp_read()
726 static int sfp_write(struct sfp *sfp, bool a2, u8 addr, void *buf, size_t len) in sfp_write() argument
728 return sfp->write(sfp, a2, addr, buf, len); in sfp_write()
731 static int sfp_modify_u8(struct sfp *sfp, bool a2, u8 addr, u8 mask, u8 val) in sfp_modify_u8() argument
736 ret = sfp_read(sfp, a2, addr, &old, sizeof(old)); in sfp_modify_u8()
744 return sfp_write(sfp, a2, addr, &v, sizeof(v)); in sfp_modify_u8()
747 static unsigned int sfp_soft_get_state(struct sfp *sfp) in sfp_soft_get_state() argument
753 ret = sfp_read(sfp, true, SFP_STATUS, &status, sizeof(status)); in sfp_soft_get_state()
760 dev_err_ratelimited(sfp->dev, in sfp_soft_get_state()
761 "failed to read SFP soft status: %pe\n", in sfp_soft_get_state()
764 state = sfp->state; in sfp_soft_get_state()
767 return state & sfp->state_soft_mask; in sfp_soft_get_state()
770 static void sfp_soft_set_state(struct sfp *sfp, unsigned int state, in sfp_soft_set_state() argument
787 sfp_modify_u8(sfp, true, SFP_STATUS, mask, val); in sfp_soft_set_state()
796 sfp_modify_u8(sfp, true, SFP_EXT_STATUS, mask, val); in sfp_soft_set_state()
799 static void sfp_soft_start_poll(struct sfp *sfp) in sfp_soft_start_poll() argument
801 const struct sfp_eeprom_id *id = &sfp->id; in sfp_soft_start_poll()
811 mask |= sfp->rs_state_mask; in sfp_soft_start_poll()
813 mutex_lock(&sfp->st_mutex); in sfp_soft_start_poll()
815 sfp->state_soft_mask = ~sfp->state_hw_mask & ~sfp->state_ignore_mask & in sfp_soft_start_poll()
818 if (sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT) && in sfp_soft_start_poll()
819 !sfp->need_poll) in sfp_soft_start_poll()
820 mod_delayed_work(system_wq, &sfp->poll, poll_jiffies); in sfp_soft_start_poll()
821 mutex_unlock(&sfp->st_mutex); in sfp_soft_start_poll()
824 static void sfp_soft_stop_poll(struct sfp *sfp) in sfp_soft_stop_poll() argument
826 mutex_lock(&sfp->st_mutex); in sfp_soft_stop_poll()
827 sfp->state_soft_mask = 0; in sfp_soft_stop_poll()
828 mutex_unlock(&sfp->st_mutex); in sfp_soft_stop_poll()
834 static unsigned int sfp_get_state(struct sfp *sfp) in sfp_get_state() argument
836 unsigned int soft = sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT); in sfp_get_state()
839 state = sfp->get_state(sfp) & sfp->state_hw_mask; in sfp_get_state()
841 state |= sfp_soft_get_state(sfp); in sfp_get_state()
849 static void sfp_set_state(struct sfp *sfp, unsigned int state) in sfp_set_state() argument
853 sfp->set_state(sfp, state); in sfp_set_state()
855 soft = sfp->state_soft_mask & SFP_F_OUTPUTS; in sfp_set_state()
857 sfp_soft_set_state(sfp, state, soft); in sfp_set_state()
860 static void sfp_mod_state(struct sfp *sfp, unsigned int mask, unsigned int set) in sfp_mod_state() argument
862 mutex_lock(&sfp->st_mutex); in sfp_mod_state()
863 sfp->state = (sfp->state & ~mask) | set; in sfp_mod_state()
864 sfp_set_state(sfp, sfp->state); in sfp_mod_state()
865 mutex_unlock(&sfp->st_mutex); in sfp_mod_state()
884 const struct sfp *sfp = data; in sfp_hwmon_is_visible() local
897 if (!(sfp->id.ext.enhopts & SFP_ENHOPTS_ALARMWARN)) in sfp_hwmon_is_visible()
916 if (!(sfp->id.ext.enhopts & SFP_ENHOPTS_ALARMWARN)) in sfp_hwmon_is_visible()
935 if (!(sfp->id.ext.enhopts & SFP_ENHOPTS_ALARMWARN)) in sfp_hwmon_is_visible()
951 if (sfp->id.ext.diagmon & SFP_DIAGMON_EXT_CAL && in sfp_hwmon_is_visible()
963 if (!(sfp->id.ext.enhopts & SFP_ENHOPTS_ALARMWARN)) in sfp_hwmon_is_visible()
977 static int sfp_hwmon_read_sensor(struct sfp *sfp, int reg, long *value) in sfp_hwmon_read_sensor() argument
982 err = sfp_read(sfp, true, reg, &val, sizeof(val)); in sfp_hwmon_read_sensor()
996 static void sfp_hwmon_calibrate(struct sfp *sfp, unsigned int slope, int offset, in sfp_hwmon_calibrate() argument
999 if (sfp->id.ext.diagmon & SFP_DIAGMON_EXT_CAL) in sfp_hwmon_calibrate()
1003 static void sfp_hwmon_calibrate_temp(struct sfp *sfp, long *value) in sfp_hwmon_calibrate_temp() argument
1005 sfp_hwmon_calibrate(sfp, be16_to_cpu(sfp->diag.cal_t_slope), in sfp_hwmon_calibrate_temp()
1006 be16_to_cpu(sfp->diag.cal_t_offset), value); in sfp_hwmon_calibrate_temp()
1014 static void sfp_hwmon_calibrate_vcc(struct sfp *sfp, long *value) in sfp_hwmon_calibrate_vcc() argument
1016 sfp_hwmon_calibrate(sfp, be16_to_cpu(sfp->diag.cal_v_slope), in sfp_hwmon_calibrate_vcc()
1017 be16_to_cpu(sfp->diag.cal_v_offset), value); in sfp_hwmon_calibrate_vcc()
1022 static void sfp_hwmon_calibrate_bias(struct sfp *sfp, long *value) in sfp_hwmon_calibrate_bias() argument
1024 sfp_hwmon_calibrate(sfp, be16_to_cpu(sfp->diag.cal_txi_slope), in sfp_hwmon_calibrate_bias()
1025 be16_to_cpu(sfp->diag.cal_txi_offset), value); in sfp_hwmon_calibrate_bias()
1030 static void sfp_hwmon_calibrate_tx_power(struct sfp *sfp, long *value) in sfp_hwmon_calibrate_tx_power() argument
1032 sfp_hwmon_calibrate(sfp, be16_to_cpu(sfp->diag.cal_txpwr_slope), in sfp_hwmon_calibrate_tx_power()
1033 be16_to_cpu(sfp->diag.cal_txpwr_offset), value); in sfp_hwmon_calibrate_tx_power()
1038 static int sfp_hwmon_read_temp(struct sfp *sfp, int reg, long *value) in sfp_hwmon_read_temp() argument
1042 err = sfp_hwmon_read_sensor(sfp, reg, value); in sfp_hwmon_read_temp()
1046 sfp_hwmon_calibrate_temp(sfp, value); in sfp_hwmon_read_temp()
1051 static int sfp_hwmon_read_vcc(struct sfp *sfp, int reg, long *value) in sfp_hwmon_read_vcc() argument
1055 err = sfp_hwmon_read_sensor(sfp, reg, value); in sfp_hwmon_read_vcc()
1059 sfp_hwmon_calibrate_vcc(sfp, value); in sfp_hwmon_read_vcc()
1064 static int sfp_hwmon_read_bias(struct sfp *sfp, int reg, long *value) in sfp_hwmon_read_bias() argument
1068 err = sfp_hwmon_read_sensor(sfp, reg, value); in sfp_hwmon_read_bias()
1072 sfp_hwmon_calibrate_bias(sfp, value); in sfp_hwmon_read_bias()
1077 static int sfp_hwmon_read_tx_power(struct sfp *sfp, int reg, long *value) in sfp_hwmon_read_tx_power() argument
1081 err = sfp_hwmon_read_sensor(sfp, reg, value); in sfp_hwmon_read_tx_power()
1085 sfp_hwmon_calibrate_tx_power(sfp, value); in sfp_hwmon_read_tx_power()
1090 static int sfp_hwmon_read_rx_power(struct sfp *sfp, int reg, long *value) in sfp_hwmon_read_rx_power() argument
1094 err = sfp_hwmon_read_sensor(sfp, reg, value); in sfp_hwmon_read_rx_power()
1103 static int sfp_hwmon_temp(struct sfp *sfp, u32 attr, long *value) in sfp_hwmon_temp() argument
1110 return sfp_hwmon_read_temp(sfp, SFP_TEMP, value); in sfp_hwmon_temp()
1113 *value = be16_to_cpu(sfp->diag.temp_low_alarm); in sfp_hwmon_temp()
1114 sfp_hwmon_calibrate_temp(sfp, value); in sfp_hwmon_temp()
1118 *value = be16_to_cpu(sfp->diag.temp_low_warn); in sfp_hwmon_temp()
1119 sfp_hwmon_calibrate_temp(sfp, value); in sfp_hwmon_temp()
1122 *value = be16_to_cpu(sfp->diag.temp_high_warn); in sfp_hwmon_temp()
1123 sfp_hwmon_calibrate_temp(sfp, value); in sfp_hwmon_temp()
1127 *value = be16_to_cpu(sfp->diag.temp_high_alarm); in sfp_hwmon_temp()
1128 sfp_hwmon_calibrate_temp(sfp, value); in sfp_hwmon_temp()
1132 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status)); in sfp_hwmon_temp()
1140 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status)); in sfp_hwmon_temp()
1148 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status)); in sfp_hwmon_temp()
1156 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status)); in sfp_hwmon_temp()
1169 static int sfp_hwmon_vcc(struct sfp *sfp, u32 attr, long *value) in sfp_hwmon_vcc() argument
1176 return sfp_hwmon_read_vcc(sfp, SFP_VCC, value); in sfp_hwmon_vcc()
1179 *value = be16_to_cpu(sfp->diag.volt_low_alarm); in sfp_hwmon_vcc()
1180 sfp_hwmon_calibrate_vcc(sfp, value); in sfp_hwmon_vcc()
1184 *value = be16_to_cpu(sfp->diag.volt_low_warn); in sfp_hwmon_vcc()
1185 sfp_hwmon_calibrate_vcc(sfp, value); in sfp_hwmon_vcc()
1189 *value = be16_to_cpu(sfp->diag.volt_high_warn); in sfp_hwmon_vcc()
1190 sfp_hwmon_calibrate_vcc(sfp, value); in sfp_hwmon_vcc()
1194 *value = be16_to_cpu(sfp->diag.volt_high_alarm); in sfp_hwmon_vcc()
1195 sfp_hwmon_calibrate_vcc(sfp, value); in sfp_hwmon_vcc()
1199 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status)); in sfp_hwmon_vcc()
1207 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status)); in sfp_hwmon_vcc()
1215 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status)); in sfp_hwmon_vcc()
1223 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status)); in sfp_hwmon_vcc()
1236 static int sfp_hwmon_bias(struct sfp *sfp, u32 attr, long *value) in sfp_hwmon_bias() argument
1243 return sfp_hwmon_read_bias(sfp, SFP_TX_BIAS, value); in sfp_hwmon_bias()
1246 *value = be16_to_cpu(sfp->diag.bias_low_alarm); in sfp_hwmon_bias()
1247 sfp_hwmon_calibrate_bias(sfp, value); in sfp_hwmon_bias()
1251 *value = be16_to_cpu(sfp->diag.bias_low_warn); in sfp_hwmon_bias()
1252 sfp_hwmon_calibrate_bias(sfp, value); in sfp_hwmon_bias()
1256 *value = be16_to_cpu(sfp->diag.bias_high_warn); in sfp_hwmon_bias()
1257 sfp_hwmon_calibrate_bias(sfp, value); in sfp_hwmon_bias()
1261 *value = be16_to_cpu(sfp->diag.bias_high_alarm); in sfp_hwmon_bias()
1262 sfp_hwmon_calibrate_bias(sfp, value); in sfp_hwmon_bias()
1266 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status)); in sfp_hwmon_bias()
1274 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status)); in sfp_hwmon_bias()
1282 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status)); in sfp_hwmon_bias()
1290 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status)); in sfp_hwmon_bias()
1303 static int sfp_hwmon_tx_power(struct sfp *sfp, u32 attr, long *value) in sfp_hwmon_tx_power() argument
1310 return sfp_hwmon_read_tx_power(sfp, SFP_TX_POWER, value); in sfp_hwmon_tx_power()
1313 *value = be16_to_cpu(sfp->diag.txpwr_low_alarm); in sfp_hwmon_tx_power()
1314 sfp_hwmon_calibrate_tx_power(sfp, value); in sfp_hwmon_tx_power()
1318 *value = be16_to_cpu(sfp->diag.txpwr_low_warn); in sfp_hwmon_tx_power()
1319 sfp_hwmon_calibrate_tx_power(sfp, value); in sfp_hwmon_tx_power()
1323 *value = be16_to_cpu(sfp->diag.txpwr_high_warn); in sfp_hwmon_tx_power()
1324 sfp_hwmon_calibrate_tx_power(sfp, value); in sfp_hwmon_tx_power()
1328 *value = be16_to_cpu(sfp->diag.txpwr_high_alarm); in sfp_hwmon_tx_power()
1329 sfp_hwmon_calibrate_tx_power(sfp, value); in sfp_hwmon_tx_power()
1333 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status)); in sfp_hwmon_tx_power()
1341 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status)); in sfp_hwmon_tx_power()
1349 err = sfp_read(sfp, true, SFP_WARN0, &status, sizeof(status)); in sfp_hwmon_tx_power()
1357 err = sfp_read(sfp, true, SFP_ALARM0, &status, sizeof(status)); in sfp_hwmon_tx_power()
1370 static int sfp_hwmon_rx_power(struct sfp *sfp, u32 attr, long *value) in sfp_hwmon_rx_power() argument
1377 return sfp_hwmon_read_rx_power(sfp, SFP_RX_POWER, value); in sfp_hwmon_rx_power()
1380 *value = be16_to_cpu(sfp->diag.rxpwr_low_alarm); in sfp_hwmon_rx_power()
1385 *value = be16_to_cpu(sfp->diag.rxpwr_low_warn); in sfp_hwmon_rx_power()
1390 *value = be16_to_cpu(sfp->diag.rxpwr_high_warn); in sfp_hwmon_rx_power()
1395 *value = be16_to_cpu(sfp->diag.rxpwr_high_alarm); in sfp_hwmon_rx_power()
1400 err = sfp_read(sfp, true, SFP_ALARM1, &status, sizeof(status)); in sfp_hwmon_rx_power()
1408 err = sfp_read(sfp, true, SFP_WARN1, &status, sizeof(status)); in sfp_hwmon_rx_power()
1416 err = sfp_read(sfp, true, SFP_WARN1, &status, sizeof(status)); in sfp_hwmon_rx_power()
1424 err = sfp_read(sfp, true, SFP_ALARM1, &status, sizeof(status)); in sfp_hwmon_rx_power()
1440 struct sfp *sfp = dev_get_drvdata(dev); in sfp_hwmon_read() local
1444 return sfp_hwmon_temp(sfp, attr, value); in sfp_hwmon_read()
1446 return sfp_hwmon_vcc(sfp, attr, value); in sfp_hwmon_read()
1448 return sfp_hwmon_bias(sfp, attr, value); in sfp_hwmon_read()
1452 return sfp_hwmon_tx_power(sfp, attr, value); in sfp_hwmon_read()
1454 return sfp_hwmon_rx_power(sfp, attr, value); in sfp_hwmon_read()
1571 struct sfp *sfp = container_of(work, struct sfp, hwmon_probe.work); in sfp_hwmon_probe() local
1580 if (sfp->i2c_block_size < 2) { in sfp_hwmon_probe()
1581 dev_info(sfp->dev, in sfp_hwmon_probe()
1583 dev_info(sfp->dev, in sfp_hwmon_probe()
1588 err = sfp_read(sfp, true, 0, &sfp->diag, sizeof(sfp->diag)); in sfp_hwmon_probe()
1590 if (sfp->hwmon_tries--) { in sfp_hwmon_probe()
1591 mod_delayed_work(system_wq, &sfp->hwmon_probe, in sfp_hwmon_probe()
1594 dev_warn(sfp->dev, "hwmon probe failed: %pe\n", in sfp_hwmon_probe()
1600 sfp->hwmon_name = hwmon_sanitize_name(dev_name(sfp->dev)); in sfp_hwmon_probe()
1601 if (IS_ERR(sfp->hwmon_name)) { in sfp_hwmon_probe()
1602 dev_err(sfp->dev, "out of memory for hwmon name\n"); in sfp_hwmon_probe()
1606 sfp->hwmon_dev = hwmon_device_register_with_info(sfp->dev, in sfp_hwmon_probe()
1607 sfp->hwmon_name, sfp, in sfp_hwmon_probe()
1610 if (IS_ERR(sfp->hwmon_dev)) in sfp_hwmon_probe()
1611 dev_err(sfp->dev, "failed to register hwmon device: %ld\n", in sfp_hwmon_probe()
1612 PTR_ERR(sfp->hwmon_dev)); in sfp_hwmon_probe()
1615 static int sfp_hwmon_insert(struct sfp *sfp) in sfp_hwmon_insert() argument
1617 if (sfp->have_a2 && sfp->id.ext.diagmon & SFP_DIAGMON_DDM) { in sfp_hwmon_insert()
1618 mod_delayed_work(system_wq, &sfp->hwmon_probe, 1); in sfp_hwmon_insert()
1619 sfp->hwmon_tries = R_PROBE_RETRY_SLOW; in sfp_hwmon_insert()
1625 static void sfp_hwmon_remove(struct sfp *sfp) in sfp_hwmon_remove() argument
1627 cancel_delayed_work_sync(&sfp->hwmon_probe); in sfp_hwmon_remove()
1628 if (!IS_ERR_OR_NULL(sfp->hwmon_dev)) { in sfp_hwmon_remove()
1629 hwmon_device_unregister(sfp->hwmon_dev); in sfp_hwmon_remove()
1630 sfp->hwmon_dev = NULL; in sfp_hwmon_remove()
1631 kfree(sfp->hwmon_name); in sfp_hwmon_remove()
1635 static int sfp_hwmon_init(struct sfp *sfp) in sfp_hwmon_init() argument
1637 INIT_DELAYED_WORK(&sfp->hwmon_probe, sfp_hwmon_probe); in sfp_hwmon_init()
1642 static void sfp_hwmon_exit(struct sfp *sfp) in sfp_hwmon_exit() argument
1644 cancel_delayed_work_sync(&sfp->hwmon_probe); in sfp_hwmon_exit()
1647 static int sfp_hwmon_insert(struct sfp *sfp) in sfp_hwmon_insert() argument
1652 static void sfp_hwmon_remove(struct sfp *sfp) in sfp_hwmon_remove() argument
1656 static int sfp_hwmon_init(struct sfp *sfp) in sfp_hwmon_init() argument
1661 static void sfp_hwmon_exit(struct sfp *sfp) in sfp_hwmon_exit() argument
1667 static void sfp_module_tx_disable(struct sfp *sfp) in sfp_module_tx_disable() argument
1669 dev_dbg(sfp->dev, "tx disable %u -> %u\n", in sfp_module_tx_disable()
1670 sfp->state & SFP_F_TX_DISABLE ? 1 : 0, 1); in sfp_module_tx_disable()
1671 sfp_mod_state(sfp, SFP_F_TX_DISABLE, SFP_F_TX_DISABLE); in sfp_module_tx_disable()
1674 static void sfp_module_tx_enable(struct sfp *sfp) in sfp_module_tx_enable() argument
1676 dev_dbg(sfp->dev, "tx disable %u -> %u\n", in sfp_module_tx_enable()
1677 sfp->state & SFP_F_TX_DISABLE ? 1 : 0, 0); in sfp_module_tx_enable()
1678 sfp_mod_state(sfp, SFP_F_TX_DISABLE, 0); in sfp_module_tx_enable()
1684 struct sfp *sfp = s->private; in sfp_debug_state_show() local
1687 mod_state_to_str(sfp->sm_mod_state)); in sfp_debug_state_show()
1689 R_PROBE_RETRY_INIT - sfp->sm_mod_tries_init, in sfp_debug_state_show()
1690 R_PROBE_RETRY_SLOW - sfp->sm_mod_tries); in sfp_debug_state_show()
1692 dev_state_to_str(sfp->sm_dev_state)); in sfp_debug_state_show()
1694 sm_state_to_str(sfp->sm_state)); in sfp_debug_state_show()
1696 sfp->sm_fault_retries); in sfp_debug_state_show()
1698 sfp->sm_phy_retries); in sfp_debug_state_show()
1699 seq_printf(s, "Signalling rate: %u kBd\n", sfp->rate_kbd); in sfp_debug_state_show()
1701 sfp->rs_threshold_kbd); in sfp_debug_state_show()
1702 seq_printf(s, "moddef0: %d\n", !!(sfp->state & SFP_F_PRESENT)); in sfp_debug_state_show()
1703 seq_printf(s, "rx_los: %d\n", !!(sfp->state & SFP_F_LOS)); in sfp_debug_state_show()
1704 seq_printf(s, "tx_fault: %d\n", !!(sfp->state & SFP_F_TX_FAULT)); in sfp_debug_state_show()
1705 seq_printf(s, "tx_disable: %d\n", !!(sfp->state & SFP_F_TX_DISABLE)); in sfp_debug_state_show()
1706 seq_printf(s, "rs0: %d\n", !!(sfp->state & SFP_F_RS0)); in sfp_debug_state_show()
1707 seq_printf(s, "rs1: %d\n", !!(sfp->state & SFP_F_RS1)); in sfp_debug_state_show()
1712 static void sfp_debugfs_init(struct sfp *sfp) in sfp_debugfs_init() argument
1714 sfp->debugfs_dir = debugfs_create_dir(dev_name(sfp->dev), NULL); in sfp_debugfs_init()
1716 debugfs_create_file("state", 0600, sfp->debugfs_dir, sfp, in sfp_debugfs_init()
1720 static void sfp_debugfs_exit(struct sfp *sfp) in sfp_debugfs_exit() argument
1722 debugfs_remove_recursive(sfp->debugfs_dir); in sfp_debugfs_exit()
1725 static void sfp_debugfs_init(struct sfp *sfp) in sfp_debugfs_init() argument
1729 static void sfp_debugfs_exit(struct sfp *sfp) in sfp_debugfs_exit() argument
1734 static void sfp_module_tx_fault_reset(struct sfp *sfp) in sfp_module_tx_fault_reset() argument
1738 mutex_lock(&sfp->st_mutex); in sfp_module_tx_fault_reset()
1739 state = sfp->state; in sfp_module_tx_fault_reset()
1741 sfp_set_state(sfp, state | SFP_F_TX_DISABLE); in sfp_module_tx_fault_reset()
1745 sfp_set_state(sfp, state); in sfp_module_tx_fault_reset()
1747 mutex_unlock(&sfp->st_mutex); in sfp_module_tx_fault_reset()
1750 /* SFP state machine */
1751 static void sfp_sm_set_timer(struct sfp *sfp, unsigned int timeout) in sfp_sm_set_timer() argument
1754 mod_delayed_work(system_power_efficient_wq, &sfp->timeout, in sfp_sm_set_timer()
1757 cancel_delayed_work(&sfp->timeout); in sfp_sm_set_timer()
1760 static void sfp_sm_next(struct sfp *sfp, unsigned int state, in sfp_sm_next() argument
1763 sfp->sm_state = state; in sfp_sm_next()
1764 sfp_sm_set_timer(sfp, timeout); in sfp_sm_next()
1767 static void sfp_sm_mod_next(struct sfp *sfp, unsigned int state, in sfp_sm_mod_next() argument
1770 sfp->sm_mod_state = state; in sfp_sm_mod_next()
1771 sfp_sm_set_timer(sfp, timeout); in sfp_sm_mod_next()
1774 static void sfp_sm_phy_detach(struct sfp *sfp) in sfp_sm_phy_detach() argument
1776 sfp_remove_phy(sfp->sfp_bus); in sfp_sm_phy_detach()
1777 phy_device_remove(sfp->mod_phy); in sfp_sm_phy_detach()
1778 phy_device_free(sfp->mod_phy); in sfp_sm_phy_detach()
1779 sfp->mod_phy = NULL; in sfp_sm_phy_detach()
1782 static int sfp_sm_probe_phy(struct sfp *sfp, int addr, bool is_c45) in sfp_sm_probe_phy() argument
1787 phy = get_phy_device(sfp->i2c_mii, addr, is_c45); in sfp_sm_probe_phy()
1791 dev_err(sfp->dev, "mdiobus scan returned %pe\n", phy); in sfp_sm_probe_phy()
1795 /* Mark this PHY as being on a SFP module */ in sfp_sm_probe_phy()
1801 dev_err(sfp->dev, "phy_device_register failed: %pe\n", in sfp_sm_probe_phy()
1806 err = sfp_add_phy(sfp->sfp_bus, phy); in sfp_sm_probe_phy()
1810 dev_err(sfp->dev, "sfp_add_phy failed: %pe\n", ERR_PTR(err)); in sfp_sm_probe_phy()
1814 sfp->mod_phy = phy; in sfp_sm_probe_phy()
1819 static void sfp_sm_link_up(struct sfp *sfp) in sfp_sm_link_up() argument
1821 sfp_link_up(sfp->sfp_bus); in sfp_sm_link_up()
1822 sfp_sm_next(sfp, SFP_S_LINK_UP, 0); in sfp_sm_link_up()
1825 static void sfp_sm_link_down(struct sfp *sfp) in sfp_sm_link_down() argument
1827 sfp_link_down(sfp->sfp_bus); in sfp_sm_link_down()
1830 static void sfp_sm_link_check_los(struct sfp *sfp) in sfp_sm_link_check_los() argument
1834 __be16 los_options = sfp->id.ext.options & (los_inverted | los_normal); in sfp_sm_link_check_los()
1842 los = !(sfp->state & SFP_F_LOS); in sfp_sm_link_check_los()
1844 los = !!(sfp->state & SFP_F_LOS); in sfp_sm_link_check_los()
1847 sfp_sm_next(sfp, SFP_S_WAIT_LOS, 0); in sfp_sm_link_check_los()
1849 sfp_sm_link_up(sfp); in sfp_sm_link_check_los()
1852 static bool sfp_los_event_active(struct sfp *sfp, unsigned int event) in sfp_los_event_active() argument
1856 __be16 los_options = sfp->id.ext.options & (los_inverted | los_normal); in sfp_los_event_active()
1862 static bool sfp_los_event_inactive(struct sfp *sfp, unsigned int event) in sfp_los_event_inactive() argument
1866 __be16 los_options = sfp->id.ext.options & (los_inverted | los_normal); in sfp_los_event_inactive()
1872 static void sfp_sm_fault(struct sfp *sfp, unsigned int next_state, bool warn) in sfp_sm_fault() argument
1874 if (sfp->sm_fault_retries && !--sfp->sm_fault_retries) { in sfp_sm_fault()
1875 dev_err(sfp->dev, in sfp_sm_fault()
1877 sfp_sm_next(sfp, SFP_S_TX_DISABLE, 0); in sfp_sm_fault()
1880 dev_err(sfp->dev, "module transmit fault indicated\n"); in sfp_sm_fault()
1882 sfp_sm_next(sfp, next_state, T_FAULT_RECOVER); in sfp_sm_fault()
1886 static int sfp_sm_add_mdio_bus(struct sfp *sfp) in sfp_sm_add_mdio_bus() argument
1888 if (sfp->mdio_protocol != MDIO_I2C_NONE) in sfp_sm_add_mdio_bus()
1889 return sfp_i2c_mdiobus_create(sfp); in sfp_sm_add_mdio_bus()
1894 /* Probe a SFP for a PHY device if the module supports copper - the PHY
1898 * Clause 22 copper SFP modules normally operate in Cisco SGMII mode with
1902 * Clause 45 copper SFP+ modules (10G) appear to switch their interface
1905 static int sfp_sm_probe_for_phy(struct sfp *sfp) in sfp_sm_probe_for_phy() argument
1909 switch (sfp->mdio_protocol) { in sfp_sm_probe_for_phy()
1914 err = sfp_sm_probe_phy(sfp, SFP_PHY_ADDR, false); in sfp_sm_probe_for_phy()
1918 err = sfp_sm_probe_phy(sfp, SFP_PHY_ADDR, true); in sfp_sm_probe_for_phy()
1922 err = sfp_sm_probe_phy(sfp, SFP_PHY_ADDR_ROLLBALL, true); in sfp_sm_probe_for_phy()
1929 static int sfp_module_parse_power(struct sfp *sfp) in sfp_module_parse_power() argument
1934 if (sfp->id.ext.sff8472_compliance >= SFP_SFF8472_COMPLIANCE_REV10_2 && in sfp_module_parse_power()
1935 sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_POWER_DECL)) in sfp_module_parse_power()
1938 if (sfp->id.ext.sff8472_compliance >= SFP_SFF8472_COMPLIANCE_REV11_4 && in sfp_module_parse_power()
1939 sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_HIGH_POWER_LEVEL)) in sfp_module_parse_power()
1944 sfp->module_power_mW = power_mW; in sfp_module_parse_power()
1948 supports_a2 = sfp->id.ext.sff8472_compliance != in sfp_module_parse_power()
1950 sfp->id.ext.diagmon & SFP_DIAGMON_DDM; in sfp_module_parse_power()
1952 if (power_mW > sfp->max_power_mW) { in sfp_module_parse_power()
1959 dev_err(sfp->dev, in sfp_module_parse_power()
1964 dev_warn(sfp->dev, in sfp_module_parse_power()
1983 if (sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE) { in sfp_module_parse_power()
1984 dev_warn(sfp->dev, in sfp_module_parse_power()
1990 sfp->module_power_mW = power_mW; in sfp_module_parse_power()
1995 static int sfp_sm_mod_hpower(struct sfp *sfp, bool enable) in sfp_sm_mod_hpower() argument
1999 err = sfp_modify_u8(sfp, true, SFP_EXT_STATUS, in sfp_sm_mod_hpower()
2003 dev_err(sfp->dev, "failed to %sable high power: %pe\n", in sfp_sm_mod_hpower()
2009 dev_info(sfp->dev, "Module switched to %u.%uW power level\n", in sfp_sm_mod_hpower()
2010 sfp->module_power_mW / 1000, in sfp_sm_mod_hpower()
2011 (sfp->module_power_mW / 100) % 10); in sfp_sm_mod_hpower()
2016 static void sfp_module_parse_rate_select(struct sfp *sfp) in sfp_module_parse_rate_select() argument
2020 sfp->rs_threshold_kbd = 0; in sfp_module_parse_rate_select()
2021 sfp->rs_state_mask = 0; in sfp_module_parse_rate_select()
2023 if (!(sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_RATE_SELECT))) in sfp_module_parse_rate_select()
2033 sfp->rs_state_mask = SFP_F_RS0; in sfp_module_parse_rate_select()
2034 sfp->rs_threshold_kbd = 1594; in sfp_module_parse_rate_select()
2044 rate_id = sfp->id.base.rate_id; in sfp_module_parse_rate_select()
2053 if (sfp->id.ext.sff8472_compliance >= SFP_SFF8472_COMPLIANCE_REV10_2 && in sfp_module_parse_rate_select()
2054 sfp->id.ext.sff8472_compliance < SFP_SFF8472_COMPLIANCE_REV11_0 && in sfp_module_parse_rate_select()
2063 if (!(sfp->id.ext.enhopts & SFP_ENHOPTS_APP_SELECT_SFF8079)) { in sfp_module_parse_rate_select()
2069 sfp->rs_threshold_kbd = 2125 - 1; in sfp_module_parse_rate_select()
2070 sfp->rs_state_mask = SFP_F_RS0; in sfp_module_parse_rate_select()
2076 if (sfp->id.ext.sff8472_compliance <= SFP_SFF8472_COMPLIANCE_REV9_5) in sfp_module_parse_rate_select()
2084 sfp->rs_threshold_kbd = 4250; in sfp_module_parse_rate_select()
2085 sfp->rs_state_mask = SFP_F_RS0; in sfp_module_parse_rate_select()
2089 sfp->rs_threshold_kbd = 4250; in sfp_module_parse_rate_select()
2090 sfp->rs_state_mask = SFP_F_RS1; in sfp_module_parse_rate_select()
2094 sfp->rs_threshold_kbd = 4250; in sfp_module_parse_rate_select()
2095 sfp->rs_state_mask = SFP_F_RS0 | SFP_F_RS1; in sfp_module_parse_rate_select()
2099 sfp->rs_threshold_kbd = 9000; in sfp_module_parse_rate_select()
2100 sfp->rs_state_mask = SFP_F_RS0 | SFP_F_RS1; in sfp_module_parse_rate_select()
2116 static bool sfp_id_needs_byte_io(struct sfp *sfp, void *buf, size_t len) in sfp_id_needs_byte_io() argument
2118 size_t i, block_size = sfp->i2c_block_size; in sfp_id_needs_byte_io()
2131 static int sfp_cotsworks_fixup_check(struct sfp *sfp, struct sfp_eeprom_id *id) in sfp_cotsworks_fixup_check() argument
2139 dev_warn(sfp->dev, "Rewriting fiber module EEPROM with corrected values\n"); in sfp_cotsworks_fixup_check()
2143 err = sfp_write(sfp, false, SFP_PHYS_ID, &id->base, 3); in sfp_cotsworks_fixup_check()
2145 dev_err(sfp->dev, in sfp_cotsworks_fixup_check()
2156 err = sfp_write(sfp, false, SFP_CC_BASE, &check, 1); in sfp_cotsworks_fixup_check()
2158 dev_err(sfp->dev, in sfp_cotsworks_fixup_check()
2167 static int sfp_module_parse_sff8472(struct sfp *sfp) in sfp_module_parse_sff8472() argument
2170 if (sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE) in sfp_module_parse_sff8472()
2171 dev_warn(sfp->dev, in sfp_module_parse_sff8472()
2174 sfp->have_a2 = true; in sfp_module_parse_sff8472()
2179 static int sfp_sm_mod_probe(struct sfp *sfp, bool report) in sfp_sm_mod_probe() argument
2181 /* SFP module inserted - read I2C data */ in sfp_sm_mod_probe()
2189 sfp->i2c_block_size = SFP_EEPROM_BLOCK_SIZE; in sfp_sm_mod_probe()
2191 ret = sfp_read(sfp, false, 0, &id.base, sizeof(id.base)); in sfp_sm_mod_probe()
2194 dev_err(sfp->dev, "failed to read EEPROM: %pe\n", in sfp_sm_mod_probe()
2200 dev_err(sfp->dev, "EEPROM short read: %pe\n", ERR_PTR(ret)); in sfp_sm_mod_probe()
2204 /* Some SFP modules (e.g. Nokia 3FE46541AA) lock up if read from in sfp_sm_mod_probe()
2210 if (sfp_id_needs_byte_io(sfp, &id.base, sizeof(id.base))) { in sfp_sm_mod_probe()
2211 dev_info(sfp->dev, in sfp_sm_mod_probe()
2213 dev_info(sfp->dev, in sfp_sm_mod_probe()
2215 sfp->i2c_block_size = 1; in sfp_sm_mod_probe()
2217 ret = sfp_read(sfp, false, 0, &id.base, sizeof(id.base)); in sfp_sm_mod_probe()
2220 dev_err(sfp->dev, in sfp_sm_mod_probe()
2227 dev_err(sfp->dev, "EEPROM short read: %pe\n", in sfp_sm_mod_probe()
2245 ret = sfp_cotsworks_fixup_check(sfp, &id); in sfp_sm_mod_probe()
2254 dev_warn(sfp->dev, in sfp_sm_mod_probe()
2258 dev_err(sfp->dev, in sfp_sm_mod_probe()
2261 print_hex_dump(KERN_ERR, "sfp EE: ", DUMP_PREFIX_OFFSET, in sfp_sm_mod_probe()
2267 ret = sfp_read(sfp, false, SFP_CC_BASE + 1, &id.ext, sizeof(id.ext)); in sfp_sm_mod_probe()
2270 dev_err(sfp->dev, "failed to read EEPROM: %pe\n", in sfp_sm_mod_probe()
2276 dev_err(sfp->dev, "EEPROM short read: %pe\n", ERR_PTR(ret)); in sfp_sm_mod_probe()
2283 dev_warn(sfp->dev, in sfp_sm_mod_probe()
2287 dev_err(sfp->dev, in sfp_sm_mod_probe()
2290 print_hex_dump(KERN_ERR, "sfp EE: ", DUMP_PREFIX_OFFSET, in sfp_sm_mod_probe()
2296 sfp->id = id; in sfp_sm_mod_probe()
2298 dev_info(sfp->dev, "module %.*s %.*s rev %.*s sn %.*s dc %.*s\n", in sfp_sm_mod_probe()
2306 if (!sfp->type->module_supported(&id)) { in sfp_sm_mod_probe()
2307 dev_err(sfp->dev, in sfp_sm_mod_probe()
2309 sfp->id.base.phys_id, sfp->id.base.phys_ext_id); in sfp_sm_mod_probe()
2313 if (sfp->id.ext.sff8472_compliance != SFP_SFF8472_COMPLIANCE_NONE) { in sfp_sm_mod_probe()
2314 ret = sfp_module_parse_sff8472(sfp); in sfp_sm_mod_probe()
2320 ret = sfp_module_parse_power(sfp); in sfp_sm_mod_probe()
2324 sfp_module_parse_rate_select(sfp); in sfp_sm_mod_probe()
2327 if (sfp->gpio[GPIO_TX_DISABLE]) in sfp_sm_mod_probe()
2329 if (sfp->gpio[GPIO_TX_FAULT]) in sfp_sm_mod_probe()
2331 if (sfp->gpio[GPIO_LOS]) in sfp_sm_mod_probe()
2333 if (sfp->gpio[GPIO_RS0]) in sfp_sm_mod_probe()
2335 if (sfp->gpio[GPIO_RS1]) in sfp_sm_mod_probe()
2338 sfp->module_t_start_up = T_START_UP; in sfp_sm_mod_probe()
2339 sfp->module_t_wait = T_WAIT; in sfp_sm_mod_probe()
2340 sfp->phy_t_retry = T_PHY_RETRY; in sfp_sm_mod_probe()
2342 sfp->state_ignore_mask = 0; in sfp_sm_mod_probe()
2344 if (sfp->id.base.extended_cc == SFF8024_ECC_10GBASE_T_SFI || in sfp_sm_mod_probe()
2345 sfp->id.base.extended_cc == SFF8024_ECC_10GBASE_T_SR || in sfp_sm_mod_probe()
2346 sfp->id.base.extended_cc == SFF8024_ECC_5GBASE_T || in sfp_sm_mod_probe()
2347 sfp->id.base.extended_cc == SFF8024_ECC_2_5GBASE_T) in sfp_sm_mod_probe()
2348 sfp->mdio_protocol = MDIO_I2C_C45; in sfp_sm_mod_probe()
2349 else if (sfp->id.base.e1000_base_t) in sfp_sm_mod_probe()
2350 sfp->mdio_protocol = MDIO_I2C_MARVELL_C22; in sfp_sm_mod_probe()
2352 sfp->mdio_protocol = MDIO_I2C_NONE; in sfp_sm_mod_probe()
2354 sfp->quirk = sfp_lookup_quirk(&id); in sfp_sm_mod_probe()
2356 mutex_lock(&sfp->st_mutex); in sfp_sm_mod_probe()
2358 sfp->state_hw_mask = mask; in sfp_sm_mod_probe()
2361 sfp->state_hw_drive |= sfp->rs_state_mask; in sfp_sm_mod_probe()
2363 if (sfp->quirk && sfp->quirk->fixup) in sfp_sm_mod_probe()
2364 sfp->quirk->fixup(sfp); in sfp_sm_mod_probe()
2366 sfp->state_hw_mask &= ~sfp->state_ignore_mask; in sfp_sm_mod_probe()
2367 mutex_unlock(&sfp->st_mutex); in sfp_sm_mod_probe()
2372 static void sfp_sm_mod_remove(struct sfp *sfp) in sfp_sm_mod_remove() argument
2374 if (sfp->sm_mod_state > SFP_MOD_WAITDEV) in sfp_sm_mod_remove()
2375 sfp_module_remove(sfp->sfp_bus); in sfp_sm_mod_remove()
2377 sfp_hwmon_remove(sfp); in sfp_sm_mod_remove()
2379 memset(&sfp->id, 0, sizeof(sfp->id)); in sfp_sm_mod_remove()
2380 sfp->module_power_mW = 0; in sfp_sm_mod_remove()
2381 sfp->state_hw_drive = SFP_F_TX_DISABLE; in sfp_sm_mod_remove()
2382 sfp->have_a2 = false; in sfp_sm_mod_remove()
2384 dev_info(sfp->dev, "module removed\n"); in sfp_sm_mod_remove()
2388 static void sfp_sm_device(struct sfp *sfp, unsigned int event) in sfp_sm_device() argument
2390 switch (sfp->sm_dev_state) { in sfp_sm_device()
2393 sfp->sm_dev_state = SFP_DEV_DOWN; in sfp_sm_device()
2398 sfp->sm_dev_state = SFP_DEV_DETACHED; in sfp_sm_device()
2400 sfp->sm_dev_state = SFP_DEV_UP; in sfp_sm_device()
2405 sfp->sm_dev_state = SFP_DEV_DETACHED; in sfp_sm_device()
2407 sfp->sm_dev_state = SFP_DEV_DOWN; in sfp_sm_device()
2415 static void sfp_sm_module(struct sfp *sfp, unsigned int event) in sfp_sm_module() argument
2421 if (sfp->sm_mod_state > SFP_MOD_PROBE) in sfp_sm_module()
2422 sfp_sm_mod_remove(sfp); in sfp_sm_module()
2423 sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0); in sfp_sm_module()
2428 if (sfp->sm_dev_state < SFP_DEV_DOWN && in sfp_sm_module()
2429 sfp->sm_mod_state > SFP_MOD_WAITDEV) { in sfp_sm_module()
2430 if (sfp->module_power_mW > 1000 && in sfp_sm_module()
2431 sfp->sm_mod_state > SFP_MOD_HPOWER) in sfp_sm_module()
2432 sfp_sm_mod_hpower(sfp, false); in sfp_sm_module()
2433 sfp_sm_mod_next(sfp, SFP_MOD_WAITDEV, 0); in sfp_sm_module()
2437 switch (sfp->sm_mod_state) { in sfp_sm_module()
2440 sfp_sm_mod_next(sfp, SFP_MOD_PROBE, T_SERIAL); in sfp_sm_module()
2441 sfp->sm_mod_tries_init = R_PROBE_RETRY_INIT; in sfp_sm_module()
2442 sfp->sm_mod_tries = R_PROBE_RETRY_SLOW; in sfp_sm_module()
2451 err = sfp_sm_mod_probe(sfp, sfp->sm_mod_tries == 1); in sfp_sm_module()
2453 if (sfp->sm_mod_tries_init && in sfp_sm_module()
2454 --sfp->sm_mod_tries_init) { in sfp_sm_module()
2455 sfp_sm_set_timer(sfp, T_PROBE_RETRY_INIT); in sfp_sm_module()
2457 } else if (sfp->sm_mod_tries && --sfp->sm_mod_tries) { in sfp_sm_module()
2458 if (sfp->sm_mod_tries == R_PROBE_RETRY_SLOW - 1) in sfp_sm_module()
2459 dev_warn(sfp->dev, in sfp_sm_module()
2461 sfp_sm_set_timer(sfp, T_PROBE_RETRY_SLOW); in sfp_sm_module()
2466 sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0); in sfp_sm_module()
2473 mod_delayed_work(system_wq, &sfp->poll, 1); in sfp_sm_module()
2475 err = sfp_hwmon_insert(sfp); in sfp_sm_module()
2477 dev_warn(sfp->dev, "hwmon probe failed: %pe\n", in sfp_sm_module()
2480 sfp_sm_mod_next(sfp, SFP_MOD_WAITDEV, 0); in sfp_sm_module()
2484 if (sfp->sm_dev_state < SFP_DEV_DOWN) in sfp_sm_module()
2488 err = sfp_module_insert(sfp->sfp_bus, &sfp->id, in sfp_sm_module()
2489 sfp->quirk); in sfp_sm_module()
2491 sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0); in sfp_sm_module()
2496 if (sfp->module_power_mW <= 1000) in sfp_sm_module()
2499 sfp_sm_mod_next(sfp, SFP_MOD_HPOWER, 0); in sfp_sm_module()
2503 err = sfp_sm_mod_hpower(sfp, true); in sfp_sm_module()
2506 sfp_module_remove(sfp->sfp_bus); in sfp_sm_module()
2507 sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0); in sfp_sm_module()
2509 sfp_sm_set_timer(sfp, T_PROBE_RETRY_INIT); in sfp_sm_module()
2514 sfp_sm_mod_next(sfp, SFP_MOD_WAITPWR, T_HPOWER_LEVEL); in sfp_sm_module()
2523 sfp_sm_mod_next(sfp, SFP_MOD_PRESENT, 0); in sfp_sm_module()
2532 static void sfp_sm_main(struct sfp *sfp, unsigned int event) in sfp_sm_main() argument
2538 if (sfp->sm_state != SFP_S_DOWN && in sfp_sm_main()
2539 (sfp->sm_mod_state != SFP_MOD_PRESENT || in sfp_sm_main()
2540 sfp->sm_dev_state != SFP_DEV_UP)) { in sfp_sm_main()
2541 if (sfp->sm_state == SFP_S_LINK_UP && in sfp_sm_main()
2542 sfp->sm_dev_state == SFP_DEV_UP) in sfp_sm_main()
2543 sfp_sm_link_down(sfp); in sfp_sm_main()
2544 if (sfp->sm_state > SFP_S_INIT) in sfp_sm_main()
2545 sfp_module_stop(sfp->sfp_bus); in sfp_sm_main()
2546 if (sfp->mod_phy) in sfp_sm_main()
2547 sfp_sm_phy_detach(sfp); in sfp_sm_main()
2548 if (sfp->i2c_mii) in sfp_sm_main()
2549 sfp_i2c_mdiobus_destroy(sfp); in sfp_sm_main()
2550 sfp_module_tx_disable(sfp); in sfp_sm_main()
2551 sfp_soft_stop_poll(sfp); in sfp_sm_main()
2552 sfp_sm_next(sfp, SFP_S_DOWN, 0); in sfp_sm_main()
2557 switch (sfp->sm_state) { in sfp_sm_main()
2559 if (sfp->sm_mod_state != SFP_MOD_PRESENT || in sfp_sm_main()
2560 sfp->sm_dev_state != SFP_DEV_UP) in sfp_sm_main()
2567 if (sfp->have_a2) in sfp_sm_main()
2568 sfp_soft_start_poll(sfp); in sfp_sm_main()
2570 sfp_module_tx_enable(sfp); in sfp_sm_main()
2573 sfp->sm_fault_retries = N_FAULT_INIT; in sfp_sm_main()
2580 sfp_sm_next(sfp, SFP_S_WAIT, sfp->module_t_wait); in sfp_sm_main()
2587 if (sfp->state & SFP_F_TX_FAULT) { in sfp_sm_main()
2593 timeout = sfp->module_t_start_up; in sfp_sm_main()
2594 if (timeout > sfp->module_t_wait) in sfp_sm_main()
2595 timeout -= sfp->module_t_wait; in sfp_sm_main()
2599 sfp_sm_next(sfp, SFP_S_INIT, timeout); in sfp_sm_main()
2609 if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) { in sfp_sm_main()
2613 sfp_sm_fault(sfp, SFP_S_INIT_TX_FAULT, in sfp_sm_main()
2614 sfp->sm_fault_retries == N_FAULT_INIT); in sfp_sm_main()
2618 ret = sfp_sm_add_mdio_bus(sfp); in sfp_sm_main()
2620 sfp_sm_next(sfp, SFP_S_FAIL, 0); in sfp_sm_main()
2623 sfp->sm_phy_retries = R_PHY_RETRY; in sfp_sm_main()
2635 ret = sfp_sm_probe_for_phy(sfp); in sfp_sm_main()
2637 if (--sfp->sm_phy_retries) { in sfp_sm_main()
2638 sfp_sm_next(sfp, SFP_S_INIT_PHY, in sfp_sm_main()
2639 sfp->phy_t_retry); in sfp_sm_main()
2640 dev_dbg(sfp->dev, in sfp_sm_main()
2642 sfp->sm_phy_retries); in sfp_sm_main()
2645 dev_info(sfp->dev, "no PHY detected\n"); in sfp_sm_main()
2648 sfp_sm_next(sfp, SFP_S_FAIL, 0); in sfp_sm_main()
2651 if (sfp_module_start(sfp->sfp_bus)) { in sfp_sm_main()
2652 sfp_sm_next(sfp, SFP_S_FAIL, 0); in sfp_sm_main()
2655 sfp_sm_link_check_los(sfp); in sfp_sm_main()
2658 sfp->sm_fault_retries = N_FAULT; in sfp_sm_main()
2663 sfp_module_tx_fault_reset(sfp); in sfp_sm_main()
2664 sfp_sm_next(sfp, SFP_S_INIT, sfp->module_t_start_up); in sfp_sm_main()
2670 sfp_sm_fault(sfp, SFP_S_TX_FAULT, true); in sfp_sm_main()
2671 else if (sfp_los_event_inactive(sfp, event)) in sfp_sm_main()
2672 sfp_sm_link_up(sfp); in sfp_sm_main()
2677 sfp_sm_link_down(sfp); in sfp_sm_main()
2678 sfp_sm_fault(sfp, SFP_S_TX_FAULT, true); in sfp_sm_main()
2679 } else if (sfp_los_event_active(sfp, event)) { in sfp_sm_main()
2680 sfp_sm_link_down(sfp); in sfp_sm_main()
2681 sfp_sm_next(sfp, SFP_S_WAIT_LOS, 0); in sfp_sm_main()
2687 sfp_module_tx_fault_reset(sfp); in sfp_sm_main()
2688 sfp_sm_next(sfp, SFP_S_REINIT, sfp->module_t_start_up); in sfp_sm_main()
2693 if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) { in sfp_sm_main()
2694 sfp_sm_fault(sfp, SFP_S_TX_FAULT, false); in sfp_sm_main()
2696 dev_info(sfp->dev, "module transmit fault recovered\n"); in sfp_sm_main()
2697 sfp_sm_link_check_los(sfp); in sfp_sm_main()
2706 static void __sfp_sm_event(struct sfp *sfp, unsigned int event) in __sfp_sm_event() argument
2708 dev_dbg(sfp->dev, "SM: enter %s:%s:%s event %s\n", in __sfp_sm_event()
2709 mod_state_to_str(sfp->sm_mod_state), in __sfp_sm_event()
2710 dev_state_to_str(sfp->sm_dev_state), in __sfp_sm_event()
2711 sm_state_to_str(sfp->sm_state), in __sfp_sm_event()
2714 sfp_sm_device(sfp, event); in __sfp_sm_event()
2715 sfp_sm_module(sfp, event); in __sfp_sm_event()
2716 sfp_sm_main(sfp, event); in __sfp_sm_event()
2718 dev_dbg(sfp->dev, "SM: exit %s:%s:%s\n", in __sfp_sm_event()
2719 mod_state_to_str(sfp->sm_mod_state), in __sfp_sm_event()
2720 dev_state_to_str(sfp->sm_dev_state), in __sfp_sm_event()
2721 sm_state_to_str(sfp->sm_state)); in __sfp_sm_event()
2724 static void sfp_sm_event(struct sfp *sfp, unsigned int event) in sfp_sm_event() argument
2726 mutex_lock(&sfp->sm_mutex); in sfp_sm_event()
2727 __sfp_sm_event(sfp, event); in sfp_sm_event()
2728 mutex_unlock(&sfp->sm_mutex); in sfp_sm_event()
2731 static void sfp_attach(struct sfp *sfp) in sfp_attach() argument
2733 sfp_sm_event(sfp, SFP_E_DEV_ATTACH); in sfp_attach()
2736 static void sfp_detach(struct sfp *sfp) in sfp_detach() argument
2738 sfp_sm_event(sfp, SFP_E_DEV_DETACH); in sfp_detach()
2741 static void sfp_start(struct sfp *sfp) in sfp_start() argument
2743 sfp_sm_event(sfp, SFP_E_DEV_UP); in sfp_start()
2746 static void sfp_stop(struct sfp *sfp) in sfp_stop() argument
2748 sfp_sm_event(sfp, SFP_E_DEV_DOWN); in sfp_stop()
2751 static void sfp_set_signal_rate(struct sfp *sfp, unsigned int rate_kbd) in sfp_set_signal_rate() argument
2755 sfp->rate_kbd = rate_kbd; in sfp_set_signal_rate()
2757 if (rate_kbd > sfp->rs_threshold_kbd) in sfp_set_signal_rate()
2758 set = sfp->rs_state_mask; in sfp_set_signal_rate()
2762 sfp_mod_state(sfp, SFP_F_RS0 | SFP_F_RS1, set); in sfp_set_signal_rate()
2765 static int sfp_module_info(struct sfp *sfp, struct ethtool_modinfo *modinfo) in sfp_module_info() argument
2769 if (sfp->id.ext.sff8472_compliance && in sfp_module_info()
2770 !(sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE)) { in sfp_module_info()
2780 static int sfp_module_eeprom(struct sfp *sfp, struct ethtool_eeprom *ee, in sfp_module_eeprom() argument
2786 if (!(sfp->state & SFP_F_PRESENT)) in sfp_module_eeprom()
2798 ret = sfp_read(sfp, false, first, data, len); in sfp_module_eeprom()
2810 ret = sfp_read(sfp, true, first, data, len); in sfp_module_eeprom()
2817 static int sfp_module_eeprom_by_page(struct sfp *sfp, in sfp_module_eeprom_by_page() argument
2821 if (!(sfp->state & SFP_F_PRESENT)) in sfp_module_eeprom_by_page()
2840 return sfp_read(sfp, page->i2c_address == 0x51, page->offset, in sfp_module_eeprom_by_page()
2857 struct sfp *sfp = container_of(work, struct sfp, timeout.work); in sfp_timeout() local
2860 sfp_sm_event(sfp, SFP_E_TIMEOUT); in sfp_timeout()
2864 static void sfp_check_state(struct sfp *sfp) in sfp_check_state() argument
2869 mutex_lock(&sfp->st_mutex); in sfp_check_state()
2870 state = sfp_get_state(sfp); in sfp_check_state()
2871 changed = state ^ sfp->state; in sfp_check_state()
2876 dev_dbg(sfp->dev, "%s %u -> %u\n", gpio_names[i], in sfp_check_state()
2877 !!(sfp->state & BIT(i)), !!(state & BIT(i))); in sfp_check_state()
2879 state |= sfp->state & SFP_F_OUTPUTS; in sfp_check_state()
2880 sfp->state = state; in sfp_check_state()
2881 mutex_unlock(&sfp->st_mutex); in sfp_check_state()
2883 mutex_lock(&sfp->sm_mutex); in sfp_check_state()
2885 __sfp_sm_event(sfp, state & SFP_F_PRESENT ? in sfp_check_state()
2889 __sfp_sm_event(sfp, state & SFP_F_TX_FAULT ? in sfp_check_state()
2893 __sfp_sm_event(sfp, state & SFP_F_LOS ? in sfp_check_state()
2895 mutex_unlock(&sfp->sm_mutex); in sfp_check_state()
2901 struct sfp *sfp = data; in sfp_irq() local
2903 sfp_check_state(sfp); in sfp_irq()
2910 struct sfp *sfp = container_of(work, struct sfp, poll.work); in sfp_poll() local
2912 sfp_check_state(sfp); in sfp_poll()
2916 if (sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT) || in sfp_poll()
2917 sfp->need_poll) in sfp_poll()
2918 mod_delayed_work(system_wq, &sfp->poll, poll_jiffies); in sfp_poll()
2921 static struct sfp *sfp_alloc(struct device *dev) in sfp_alloc()
2923 struct sfp *sfp; in sfp_alloc() local
2925 sfp = kzalloc(sizeof(*sfp), GFP_KERNEL); in sfp_alloc()
2926 if (!sfp) in sfp_alloc()
2929 sfp->dev = dev; in sfp_alloc()
2930 sfp->i2c_block_size = SFP_EEPROM_BLOCK_SIZE; in sfp_alloc()
2932 mutex_init(&sfp->sm_mutex); in sfp_alloc()
2933 mutex_init(&sfp->st_mutex); in sfp_alloc()
2934 INIT_DELAYED_WORK(&sfp->poll, sfp_poll); in sfp_alloc()
2935 INIT_DELAYED_WORK(&sfp->timeout, sfp_timeout); in sfp_alloc()
2937 sfp_hwmon_init(sfp); in sfp_alloc()
2939 return sfp; in sfp_alloc()
2944 struct sfp *sfp = data; in sfp_cleanup() local
2946 sfp_hwmon_exit(sfp); in sfp_cleanup()
2948 cancel_delayed_work_sync(&sfp->poll); in sfp_cleanup()
2949 cancel_delayed_work_sync(&sfp->timeout); in sfp_cleanup()
2950 if (sfp->i2c_mii) { in sfp_cleanup()
2951 mdiobus_unregister(sfp->i2c_mii); in sfp_cleanup()
2952 mdiobus_free(sfp->i2c_mii); in sfp_cleanup()
2954 if (sfp->i2c) in sfp_cleanup()
2955 i2c_put_adapter(sfp->i2c); in sfp_cleanup()
2956 kfree(sfp); in sfp_cleanup()
2959 static int sfp_i2c_get(struct sfp *sfp) in sfp_i2c_get() argument
2965 h = fwnode_find_reference(dev_fwnode(sfp->dev), "i2c-bus", 0); in sfp_i2c_get()
2967 dev_err(sfp->dev, "missing 'i2c-bus' property\n"); in sfp_i2c_get()
2977 err = sfp_i2c_configure(sfp, i2c); in sfp_i2c_get()
2989 struct sfp *sfp; in sfp_probe() local
2992 sfp = sfp_alloc(&pdev->dev); in sfp_probe()
2993 if (IS_ERR(sfp)) in sfp_probe()
2994 return PTR_ERR(sfp); in sfp_probe()
2996 platform_set_drvdata(pdev, sfp); in sfp_probe()
2998 err = devm_add_action_or_reset(sfp->dev, sfp_cleanup, sfp); in sfp_probe()
3002 sff = device_get_match_data(sfp->dev); in sfp_probe()
3006 sfp->type = sff; in sfp_probe()
3008 err = sfp_i2c_get(sfp); in sfp_probe()
3014 sfp->gpio[i] = devm_gpiod_get_optional(sfp->dev, in sfp_probe()
3016 if (IS_ERR(sfp->gpio[i])) in sfp_probe()
3017 return PTR_ERR(sfp->gpio[i]); in sfp_probe()
3020 sfp->state_hw_mask = SFP_F_PRESENT; in sfp_probe()
3021 sfp->state_hw_drive = SFP_F_TX_DISABLE; in sfp_probe()
3023 sfp->get_state = sfp_gpio_get_state; in sfp_probe()
3024 sfp->set_state = sfp_gpio_set_state; in sfp_probe()
3027 if (!(sfp->gpio[GPIO_MODDEF0])) in sfp_probe()
3028 sfp->get_state = sff_gpio_get_state; in sfp_probe()
3031 &sfp->max_power_mW); in sfp_probe()
3032 if (sfp->max_power_mW < 1000) { in sfp_probe()
3033 if (sfp->max_power_mW) in sfp_probe()
3034 dev_warn(sfp->dev, in sfp_probe()
3036 sfp->max_power_mW = 1000; in sfp_probe()
3039 dev_info(sfp->dev, "Host maximum power %u.%uW\n", in sfp_probe()
3040 sfp->max_power_mW / 1000, (sfp->max_power_mW / 100) % 10); in sfp_probe()
3045 sfp->state = sfp_get_state(sfp) | SFP_F_TX_DISABLE; in sfp_probe()
3047 if (sfp->gpio[GPIO_RS0] && in sfp_probe()
3048 gpiod_get_value_cansleep(sfp->gpio[GPIO_RS0])) in sfp_probe()
3049 sfp->state |= SFP_F_RS0; in sfp_probe()
3050 sfp_set_state(sfp, sfp->state); in sfp_probe()
3051 sfp_module_tx_disable(sfp); in sfp_probe()
3052 if (sfp->state & SFP_F_PRESENT) { in sfp_probe()
3054 sfp_sm_event(sfp, SFP_E_INSERT); in sfp_probe()
3059 if (gpio_flags[i] != GPIOD_IN || !sfp->gpio[i]) in sfp_probe()
3062 sfp->gpio_irq[i] = gpiod_to_irq(sfp->gpio[i]); in sfp_probe()
3063 if (sfp->gpio_irq[i] < 0) { in sfp_probe()
3064 sfp->gpio_irq[i] = 0; in sfp_probe()
3065 sfp->need_poll = true; in sfp_probe()
3069 sfp_irq_name = devm_kasprintf(sfp->dev, GFP_KERNEL, in sfp_probe()
3070 "%s-%s", dev_name(sfp->dev), in sfp_probe()
3076 err = devm_request_threaded_irq(sfp->dev, sfp->gpio_irq[i], in sfp_probe()
3081 sfp_irq_name, sfp); in sfp_probe()
3083 sfp->gpio_irq[i] = 0; in sfp_probe()
3084 sfp->need_poll = true; in sfp_probe()
3088 if (sfp->need_poll) in sfp_probe()
3089 mod_delayed_work(system_wq, &sfp->poll, poll_jiffies); in sfp_probe()
3096 if (!sfp->gpio[GPIO_TX_DISABLE]) in sfp_probe()
3097 dev_warn(sfp->dev, in sfp_probe()
3098 "No tx_disable pin: SFP modules will always be emitting.\n"); in sfp_probe()
3100 sfp->sfp_bus = sfp_register_socket(sfp->dev, sfp, &sfp_module_ops); in sfp_probe()
3101 if (!sfp->sfp_bus) in sfp_probe()
3104 sfp_debugfs_init(sfp); in sfp_probe()
3111 struct sfp *sfp = platform_get_drvdata(pdev); in sfp_remove() local
3113 sfp_debugfs_exit(sfp); in sfp_remove()
3114 sfp_unregister_socket(sfp->sfp_bus); in sfp_remove()
3117 sfp_sm_event(sfp, SFP_E_REMOVE); in sfp_remove()
3123 struct sfp *sfp = platform_get_drvdata(pdev); in sfp_shutdown() local
3127 if (!sfp->gpio_irq[i]) in sfp_shutdown()
3130 devm_free_irq(sfp->dev, sfp->gpio_irq[i], sfp); in sfp_shutdown()
3133 cancel_delayed_work_sync(&sfp->poll); in sfp_shutdown()
3134 cancel_delayed_work_sync(&sfp->timeout); in sfp_shutdown()
3142 .name = "sfp",
3161 MODULE_ALIAS("platform:sfp");
3164 MODULE_DESCRIPTION("SFP cage support");