377 lines
11 KiB
C
377 lines
11 KiB
C
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/*-
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* Copyright (c) 2015,2016 Annapurna Labs Ltd. and affiliates
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* All rights reserved.
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*
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* Developed by Semihalf.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/**
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* Ethernet
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* @{
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* @file al_init_eth_lm.h
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*
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* @brief ethernet link management common utilities
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*
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* Common operation example:
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* @code
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* int main()
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* {
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* struct al_eth_lm_context lm_context;
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* struct al_eth_lm_init_params lm_params;
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* enum al_eth_lm_link_mode old_mode;
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* enum al_eth_lm_link_mode new_mode;
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* al_bool fault;
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* al_bool link_up;
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* int rc = 0;
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*
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* lm_params.adapter = hal_adapter;
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* lm_params.serdes_obj = serdes;
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* lm_params.grp = grp;
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* lm_params.lane = lane;
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* lm_params.sfp_detection = true;
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* lm_params.link_training = true;
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* lm_params.rx_equal = true
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* lm_params.static_values = true;
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* lm_params.kr_fec_enable = false;
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* lm_params.eeprom_read = &my_eeprom_read;
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* lm_params.eeprom_context = context;
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* lm_params.get_random_byte = &my_rand_byte;
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* lm_params.default_mode = AL_ETH_LM_MODE_10G_DA;
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*
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* al_eth_lm_init(&lm_context, &lm_params);
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*
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* rc = al_eth_lm_link_detection(&lm_context, &fault, &old_mode, &new_mode);
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* if (fault == false)
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* return; // in this case the link is still up
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*
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* if (rc) {
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* printf("link detection failed on error\n");
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* return;
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* }
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*
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* if (old_mode != new_mode) {
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* // perform serdes configuration if needed
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*
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* // mac stop / start / config if needed
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* }
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*
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* spin_lock(lock);
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* rc = al_eth_lm_link_establish($lm_context, &link_up);
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* spin_unlock(lock);
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* if (rc) {
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* printf("establish link failed\n");
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* return;
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* }
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*
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* if (link_up)
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* printf("Link established successfully\n");
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* else
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* printf("No signal found. probably the link partner is disconnected\n");
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* }
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* @endcode
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*
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*/
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#ifndef __AL_INIT_ETH_LM_H__
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#define __AL_INIT_ETH_LM_H__
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#include <al_serdes.h>
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#include <al_hal_eth.h>
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#include "al_init_eth_kr.h"
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enum al_eth_lm_link_mode {
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AL_ETH_LM_MODE_DISCONNECTED,
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AL_ETH_LM_MODE_10G_OPTIC,
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AL_ETH_LM_MODE_10G_DA,
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AL_ETH_LM_MODE_1G,
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AL_ETH_LM_MODE_25G,
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};
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enum al_eth_lm_max_speed {
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AL_ETH_LM_MAX_SPEED_MAX,
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AL_ETH_LM_MAX_SPEED_25G,
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AL_ETH_LM_MAX_SPEED_10G,
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AL_ETH_LM_MAX_SPEED_1G,
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};
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enum al_eth_lm_link_state {
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AL_ETH_LM_LINK_DOWN,
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AL_ETH_LM_LINK_DOWN_RF,
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AL_ETH_LM_LINK_UP,
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};
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enum al_eth_lm_led_config_speed {
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AL_ETH_LM_LED_CONFIG_1G,
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AL_ETH_LM_LED_CONFIG_10G,
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AL_ETH_LM_LED_CONFIG_25G,
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};
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struct al_eth_lm_led_config_data {
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enum al_eth_lm_led_config_speed speed;
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};
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struct al_eth_lm_context {
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struct al_hal_eth_adapter *adapter;
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struct al_serdes_grp_obj *serdes_obj;
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enum al_serdes_lane lane;
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uint32_t link_training_failures;
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boolean_t tx_param_dirty;
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boolean_t serdes_tx_params_valid;
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struct al_serdes_adv_tx_params tx_params_override;
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boolean_t rx_param_dirty;
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boolean_t serdes_rx_params_valid;
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struct al_serdes_adv_rx_params rx_params_override;
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struct al_eth_an_adv local_adv;
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struct al_eth_an_adv partner_adv;
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enum al_eth_lm_link_mode mode;
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uint8_t da_len;
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boolean_t debug;
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/* configurations */
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boolean_t sfp_detection;
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uint8_t sfp_bus_id;
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uint8_t sfp_i2c_addr;
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enum al_eth_lm_link_mode default_mode;
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uint8_t default_dac_len;
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boolean_t link_training;
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boolean_t rx_equal;
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boolean_t static_values;
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boolean_t retimer_exist;
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enum al_eth_retimer_type retimer_type;
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uint8_t retimer_bus_id;
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uint8_t retimer_i2c_addr;
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enum al_eth_retimer_channel retimer_channel;
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/* services */
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int (*i2c_read)(void *handle, uint8_t bus_id, uint8_t i2c_addr,
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uint8_t reg_addr, uint8_t *val);
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int (*i2c_write)(void *handle, uint8_t bus_id, uint8_t i2c_addr,
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uint8_t reg_addr, uint8_t val);
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void *i2c_context;
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uint8_t (*get_random_byte)(void);
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int (*gpio_get)(unsigned int gpio);
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uint32_t gpio_present;
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enum al_eth_retimer_channel retimer_tx_channel;
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boolean_t retimer_configured;
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enum al_eth_lm_max_speed max_speed;
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boolean_t sfp_detect_force_mode;
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enum al_eth_lm_link_state link_state;
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boolean_t new_port;
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boolean_t (*lm_pause)(void *handle);
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void (*led_config)(void *handle, struct al_eth_lm_led_config_data *data);
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};
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struct al_eth_lm_init_params {
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/* pointer to HAL context */
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struct al_hal_eth_adapter *adapter;
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/* pointer to serdes object */
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struct al_serdes_grp_obj *serdes_obj;
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/* serdes lane for this port */
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enum al_serdes_lane lane;
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/*
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* set to true to perform sfp detection if the link is down.
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* when set to true, eeprom_read below should NOT be NULL.
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*/
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boolean_t sfp_detection;
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/* i2c bus id of the SFP for this port */
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uint8_t sfp_bus_id;
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/* i2c addr of the SFP for this port */
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uint8_t sfp_i2c_addr;
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/*
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* default mode, and dac length will be used in case sfp_detection
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* is not set or in case the detection failed.
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*/
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enum al_eth_lm_link_mode default_mode;
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uint8_t default_dac_len;
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/* the i2c bus id and addr of the retimer in case it exist */
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uint8_t retimer_bus_id;
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uint8_t retimer_i2c_addr;
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/* retimer channel connected to this port */
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enum al_eth_retimer_channel retimer_channel;
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enum al_eth_retimer_channel retimer_tx_channel;
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/* retimer type if exist */
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enum al_eth_retimer_type retimer_type;
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/*
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* the following parameters control what mechanisms to run
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* on link_establish with the following steps:
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* - if retimer_exist is set, the retimer will be configured based on DA len.
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* - if link_training is set and DA detected run link training. if succeed return 0
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* - if rx_equal is set serdes equalization will be run to configure the rx parameters.
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* - if static_values is set, tx and rx values will be set based on static values.
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*/
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boolean_t retimer_exist;
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boolean_t link_training;
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boolean_t rx_equal;
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boolean_t static_values;
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/* enable / disable fec capabilities in AN */
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boolean_t kr_fec_enable;
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/*
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* pointer to function that's read 1 byte from eeprom
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* in case no eeprom is connected should return -ETIMEDOUT
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*/
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int (*i2c_read)(void *handle, uint8_t bus_id, uint8_t i2c_addr,
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uint8_t reg_addr, uint8_t *val);
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int (*i2c_write)(void *handle, uint8_t bus_id, uint8_t i2c_addr,
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uint8_t reg_addr, uint8_t val);
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void *i2c_context;
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/* pointer to function that return 1 rand byte */
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uint8_t (*get_random_byte)(void);
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/* pointer to function that gets GPIO value - if NULL gpio present won't be used */
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int (*gpio_get)(unsigned int gpio);
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/* gpio number connected to the SFP present pin */
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uint32_t gpio_present;
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enum al_eth_lm_max_speed max_speed;
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/* in case force mode is true - the default mode will be set regardless to
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* the SFP EEPROM content */
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boolean_t sfp_detect_force_mode;
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/* lm pause callback - in case it return true the LM will try to preserve
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* the current link status and will not try to establish new link (and will not
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* access to i2c bus) */
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boolean_t (*lm_pause)(void *handle);
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/* config ethernet LEDs according to data. can be NULL if no configuration needed */
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void (*led_config)(void *handle, struct al_eth_lm_led_config_data *data);
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};
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/**
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* initialize link management context and set configuration
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*
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* @param lm_context pointer to link management context
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* @param params parameters passed from upper layer
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*
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* @return 0 in case of success. otherwise on failure.
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*/
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int al_eth_lm_init(struct al_eth_lm_context *lm_context,
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struct al_eth_lm_init_params *params);
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/**
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* perform link status check. in case link is down perform sfp detection
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*
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* @param lm_context pointer to link management context
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* @param link_fault indicate if the link is down
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* @param old_mode the last working mode
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* @param new_mode the new mode detected in this call
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*
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* @return 0 in case of success. otherwise on failure.
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*/
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int al_eth_lm_link_detection(struct al_eth_lm_context *lm_context,
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boolean_t *link_fault, enum al_eth_lm_link_mode *old_mode,
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enum al_eth_lm_link_mode *new_mode);
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/**
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* run LT, rx equalization and static values override according to configuration
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* This function MUST be called inside a lock as it using common serdes registers
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*
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* @param lm_context pointer to link management context
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* @param link_up set to true in case link is establish successfully
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*
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* @return < 0 in case link was failed to be established
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*/
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int al_eth_lm_link_establish(struct al_eth_lm_context *lm_context,
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boolean_t *link_up);
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/**
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* override the default static parameters
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*
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* @param lm_context pointer to link management context
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* @param tx_params pointer to new tx params
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* @param rx_params pointer to new rx params
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*
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* @return 0 in case of success. otherwise on failure.
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**/
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int al_eth_lm_static_parameters_override(struct al_eth_lm_context *lm_context,
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struct al_serdes_adv_tx_params *tx_params,
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struct al_serdes_adv_rx_params *rx_params);
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/**
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* disable serdes parameters override
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*
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* @param lm_context pointer to link management context
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* @param tx_params set to true to disable override of tx params
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* @param rx_params set to true to disable override of rx params
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*
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* @return 0 in case of success. otherwise on failure.
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**/
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int al_eth_lm_static_parameters_override_disable(struct al_eth_lm_context *lm_context,
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boolean_t tx_params, boolean_t rx_params);
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/**
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* get the static parameters that are being used
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* if the parameters was override - return the override values
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* else return the current values of the parameters
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*
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* @param lm_context pointer to link management context
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* @param tx_params pointer to new tx params
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* @param rx_params pointer to new rx params
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*
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* @return 0 in case of success. otherwise on failure.
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*/
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int al_eth_lm_static_parameters_get(struct al_eth_lm_context *lm_context,
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struct al_serdes_adv_tx_params *tx_params,
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struct al_serdes_adv_rx_params *rx_params);
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/**
|
||
|
|
* convert link management mode to string
|
||
|
|
*
|
||
|
|
* @param val link management mode
|
||
|
|
*
|
||
|
|
* @return string of the mode
|
||
|
|
*/
|
||
|
|
const char *al_eth_lm_mode_convert_to_str(enum al_eth_lm_link_mode val);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* print all debug messages
|
||
|
|
*
|
||
|
|
* @param lm_context pointer to link management context
|
||
|
|
* @param enable set to true to enable debug mode
|
||
|
|
*/
|
||
|
|
void al_eth_lm_debug_mode_set(struct al_eth_lm_context *lm_context,
|
||
|
|
boolean_t enable);
|
||
|
|
#endif
|