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esp-idf/components/ethernet/emac_main.c
Alexey Gerenkov 8d43859b6a esp32: SEGGER SystemView Tracing Support 
Implements support for system level traces compatible with SEGGER
SystemView tool on top of ESP32 application tracing module.
That kind of traces can help to analyse program's behaviour.
SystemView can show timeline of tasks/ISRs execution, context switches,
statistics related to the CPUs' load distribution etc.

Also this commit adds useful feature to ESP32 application tracing module:
 - Trace data buffering is implemented to handle temporary peaks of events load
2017-06-27 20:52:43 +03:00

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdio.h>
#include <string.h>
#include "rom/ets_sys.h"
#include "rom/gpio.h"
#include "soc/dport_reg.h"
#include "soc/io_mux_reg.h"
#include "soc/rtc_cntl_reg.h"
#include "soc/gpio_reg.h"
#include "soc/dport_reg.h"
#include "soc/emac_ex_reg.h"
#include "soc/emac_reg_v2.h"
#include "soc/soc.h"
#include "tcpip_adapter.h"
#include "sdkconfig.h"
#include "esp_task_wdt.h"
#include "esp_event.h"
#include "esp_system.h"
#include "esp_err.h"
#include "esp_log.h"
#include "esp_eth.h"
#include "esp_intr_alloc.h"
#include "emac_common.h"
#include "emac_desc.h"
#include "freertos/xtensa_api.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "freertos/semphr.h"
#include "freertos/timers.h"
#include "lwip/err.h"
#define EMAC_EVT_QNUM 200
#define EMAC_SIG_MAX 50
static struct emac_config_data emac_config;
static uint8_t emac_dma_rx_chain_buf[32 * DMA_RX_BUF_NUM];
static uint8_t emac_dma_tx_chain_buf[32 * DMA_TX_BUF_NUM];
static uint8_t emac_dma_rx_buf[DMA_RX_BUF_SIZE * DMA_RX_BUF_NUM];
static uint8_t emac_dma_tx_buf[DMA_TX_BUF_SIZE * DMA_TX_BUF_NUM];
static SemaphoreHandle_t emac_g_sem;
static portMUX_TYPE g_emac_mux = portMUX_INITIALIZER_UNLOCKED;
static xTaskHandle emac_task_hdl;
static xQueueHandle emac_xqueue;
static uint8_t emac_sig_cnt[EMAC_SIG_MAX] = {0};
static TimerHandle_t emac_timer = NULL;
static SemaphoreHandle_t emac_rx_xMutex = NULL;
static SemaphoreHandle_t emac_tx_xMutex = NULL;
static const char *TAG = "emac";
static bool pause_send = false;
static esp_err_t emac_ioctl(emac_sig_t sig, emac_par_t par);
esp_err_t emac_post(emac_sig_t sig, emac_par_t par);
static void emac_macaddr_init(void)
{
esp_read_mac(&(emac_config.macaddr[0]), ESP_MAC_ETH);
}
void esp_eth_get_mac(uint8_t mac[6])
{
memcpy(mac, &(emac_config.macaddr[0]), 6);
}
static void emac_setup_tx_desc(struct dma_extended_desc *tx_desc , uint32_t size)
{
tx_desc->basic.desc1 = size & 0xfff;
tx_desc->basic.desc0 = EMAC_DESC_INT_COMPL | EMAC_DESC_LAST_SEGMENT | EMAC_DESC_FIRST_SEGMENT | EMAC_DESC_SECOND_ADDR_CHAIN;
tx_desc->basic.desc0 = EMAC_DESC_TX_OWN | EMAC_DESC_INT_COMPL | EMAC_DESC_LAST_SEGMENT | EMAC_DESC_FIRST_SEGMENT | EMAC_DESC_SECOND_ADDR_CHAIN;
}
static void emac_clean_tx_desc(struct dma_extended_desc *tx_desc)
{
tx_desc->basic.desc1 = 0;
tx_desc->basic.desc0 = 0;
}
static void emac_clean_rx_desc(struct dma_extended_desc *rx_desc , uint32_t buf_ptr)
{
if (buf_ptr != 0) {
rx_desc->basic.desc2 = buf_ptr;
}
rx_desc->basic.desc1 = EMAC_DESC_RX_SECOND_ADDR_CHAIN | DMA_RX_BUF_SIZE;
rx_desc->basic.desc0 = EMAC_DESC_RX_OWN;
}
static void emac_set_tx_base_reg(void)
{
REG_WRITE(EMAC_DMATXBASEADDR_REG, (uint32_t)(emac_config.dma_etx));
}
static void emac_set_rx_base_reg(void)
{
REG_WRITE(EMAC_DMARXBASEADDR_REG, (uint32_t)(emac_config.dma_erx));
}
static void emac_reset_dma_chain(void)
{
emac_config.cnt_tx = 0;
emac_config.cur_tx = 0;
emac_config.dirty_tx = 0;
emac_config.cnt_rx = 0;
emac_config.cur_rx = 0;
emac_config.dirty_rx = 0;
}
static void emac_init_dma_chain(void)
{
int i;
uint32_t dma_phy;
struct dma_extended_desc *p = NULL;
//init tx chain
emac_config.dma_etx = (struct dma_extended_desc *)(&emac_dma_tx_chain_buf[0]);
emac_config.cnt_tx = 0;
emac_config.cur_tx = 0;
emac_config.dirty_tx = 0;
dma_phy = (uint32_t)(emac_config.dma_etx);
p = emac_config.dma_etx;
for (i = 0; i < (DMA_TX_BUF_NUM - 1); i++ ) {
dma_phy += sizeof(struct dma_extended_desc);
emac_clean_tx_desc(p);
p->basic.desc3 = dma_phy;
p->basic.desc2 = (uint32_t)(&emac_dma_tx_buf[0]) + (i * DMA_TX_BUF_SIZE);
p++;
}
p->basic.desc3 = (uint32_t)(emac_config.dma_etx);
p->basic.desc2 = (uint32_t)(&emac_dma_tx_buf[0]) + (i * DMA_TX_BUF_SIZE);
//init desc0 desc1
emac_clean_tx_desc(p);
//init rx chain
emac_config.dma_erx = (struct dma_extended_desc *)(&emac_dma_rx_chain_buf[0]);
emac_config.cnt_rx = 0;
emac_config.cur_rx = 0;
emac_config.dirty_rx = 0;
dma_phy = (uint32_t)(emac_config.dma_erx);
p = emac_config.dma_erx;
for (i = 0; i < (DMA_RX_BUF_NUM - 1); i++ ) {
dma_phy += sizeof(struct dma_extended_desc);
emac_clean_rx_desc(p, (uint32_t)(&emac_dma_rx_buf[0]) + (i * DMA_RX_BUF_SIZE));
p->basic.desc3 = dma_phy;
p++;
}
emac_clean_rx_desc(p, (uint32_t)(&emac_dma_rx_buf[0]) + (i * DMA_RX_BUF_SIZE));
p->basic.desc3 = (uint32_t)(emac_config.dma_erx);
}
void esp_eth_smi_write(uint32_t reg_num, uint16_t value)
{
uint32_t phy_num = emac_config.phy_addr;
while (REG_GET_BIT(EMAC_GMACGMIIADDR_REG, EMAC_GMIIBUSY) == 1 ) {
}
REG_WRITE(EMAC_GMACGMIIDATA_REG, value);
REG_WRITE(EMAC_GMACGMIIADDR_REG, 0x3 | ((reg_num & 0x1f) << 6) | ((phy_num & 0x1f) << 11) | ((0x3) << 2));
while (REG_GET_BIT(EMAC_GMACGMIIADDR_REG, EMAC_GMIIBUSY) == 1 ) {
}
}
uint16_t esp_eth_smi_read(uint32_t reg_num)
{
uint32_t phy_num = emac_config.phy_addr;
uint16_t value = 0;
while (REG_GET_BIT(EMAC_GMACGMIIADDR_REG, EMAC_GMIIBUSY) == 1 ) {
}
REG_WRITE(EMAC_GMACGMIIADDR_REG, 0x1 | ((reg_num & 0x1f) << 6) | ((phy_num & 0x1f) << 11) | (0x3 << 2));
while (REG_GET_BIT(EMAC_GMACGMIIADDR_REG, EMAC_GMIIBUSY) == 1 ) {
}
value = (REG_READ(EMAC_GMACGMIIDATA_REG) & 0xffff);
return value;
}
esp_err_t esp_eth_smi_wait_value(uint32_t reg_num, uint16_t value, uint16_t value_mask, int timeout_ms)
{
unsigned start = xTaskGetTickCount();
unsigned timeout_ticks = (timeout_ms + portTICK_PERIOD_MS - 1) / portTICK_PERIOD_MS;
uint16_t current_value = 0;
while (timeout_ticks == 0 || (xTaskGetTickCount() - start < timeout_ticks)) {
current_value = esp_eth_smi_read(reg_num);
if ((current_value & value_mask) == (value & value_mask)) {
return ESP_OK;
}
vTaskDelay(1);
}
ESP_LOGE(TAG, "Timed out waiting for PHY register 0x%x to have value 0x%04x (mask 0x%04x). Current value 0x%04x",
reg_num, value, value_mask, current_value);
return ESP_ERR_TIMEOUT;
}
static void emac_set_user_config_data(eth_config_t *config )
{
emac_config.phy_addr = config->phy_addr;
emac_config.mac_mode = config->mac_mode;
emac_config.phy_init = config->phy_init;
emac_config.emac_tcpip_input = config->tcpip_input;
emac_config.emac_gpio_config = config->gpio_config;
emac_config.emac_phy_check_link = config->phy_check_link;
emac_config.emac_phy_check_init = config->phy_check_init;
emac_config.emac_phy_get_speed_mode = config->phy_get_speed_mode;
emac_config.emac_phy_get_duplex_mode = config->phy_get_duplex_mode;
#if DMA_RX_BUF_NUM > 9
emac_config.emac_flow_ctrl_enable = config->flow_ctrl_enable;
#else
if(config->flow_ctrl_enable == true) {
ESP_LOGE(TAG, "eth flow ctrl init err!!! Please run make menuconfig and make sure DMA_RX_BUF_NUM > 9 .");
}
emac_config.emac_flow_ctrl_enable = false;
#endif
emac_config.emac_phy_get_partner_pause_enable = config->phy_get_partner_pause_enable;
emac_config.emac_phy_power_enable = config->phy_power_enable;
}
static void emac_enable_intr()
{
REG_WRITE(EMAC_DMAINTERRUPT_EN_REG, EMAC_INTR_ENABLE_BIT);
}
static void emac_disable_intr()
{
REG_WRITE(EMAC_DMAINTERRUPT_EN_REG, 0);
}
static esp_err_t emac_verify_args(void)
{
esp_err_t ret = ESP_OK;
if (emac_config.phy_addr > PHY31) {
ESP_LOGE(TAG, "phy addr err");
ret = ESP_FAIL;
}
if (emac_config.mac_mode != ETH_MODE_RMII) {
ESP_LOGE(TAG, "mac mode err,now only support RMII");
ret = ESP_FAIL;
}
if (emac_config.phy_init == NULL) {
ESP_LOGE(TAG, "phy_init func is null");
ret = ESP_FAIL;
}
if (emac_config.emac_tcpip_input == NULL) {
ESP_LOGE(TAG, "tcpip_input func is null");
ret = ESP_FAIL;
}
if (emac_config.emac_gpio_config == NULL) {
ESP_LOGE(TAG, "gpio config func is null");
ret = ESP_FAIL;
}
if (emac_config.emac_phy_check_link == NULL) {
ESP_LOGE(TAG, "phy check link func is null");
ret = ESP_FAIL;
}
if (emac_config.emac_phy_check_init == NULL) {
ESP_LOGE(TAG, "phy check init func is null");
ret = ESP_FAIL;
}
if (emac_config.emac_phy_get_speed_mode == NULL) {
ESP_LOGE(TAG, "phy get speed mode func is null");
ret = ESP_FAIL;
}
if (emac_config.emac_phy_get_duplex_mode == NULL) {
ESP_LOGE(TAG, "phy get duplex mode func is null");
ret = ESP_FAIL;
}
if (emac_config.emac_flow_ctrl_enable == true && emac_config.emac_phy_get_partner_pause_enable == NULL) {
ESP_LOGE(TAG, "phy get partner pause enable func is null");
ret = ESP_FAIL;
}
if(emac_config.emac_phy_power_enable == NULL) {
ESP_LOGE(TAG, "phy power enable func is null");
ret = ESP_FAIL;
}
return ret;
}
//TODO for mac filter
void emac_set_mac_addr(void)
{
}
//TODO
void emac_check_mac_addr(void)
{
}
static void emac_process_tx(void)
{
uint32_t cur_tx_desc = emac_read_tx_cur_reg();
if (emac_config.emac_status == EMAC_RUNTIME_STOP) {
return;
}
xSemaphoreTakeRecursive( emac_tx_xMutex, ( TickType_t ) portMAX_DELAY );
while (((uint32_t) & (emac_config.dma_etx[emac_config.dirty_tx].basic.desc0) != cur_tx_desc)) {
emac_clean_tx_desc(&(emac_config.dma_etx[emac_config.dirty_tx]));
emac_config.dirty_tx = (emac_config.dirty_tx + 1) % DMA_TX_BUF_NUM;
emac_config.cnt_tx --;
if (emac_config.cnt_tx < 0) {
ESP_LOGE(TAG, "emac tx chain err");
}
cur_tx_desc = emac_read_tx_cur_reg();
}
xSemaphoreGiveRecursive( emac_tx_xMutex );
}
void esp_eth_free_rx_buf(void *buf)
{
xSemaphoreTakeRecursive( emac_rx_xMutex, ( TickType_t ) portMAX_DELAY );
emac_clean_rx_desc(&(emac_config.dma_erx[emac_config.cur_rx]), (uint32_t) buf);
emac_config.cur_rx = (emac_config.cur_rx + 1) % DMA_RX_BUF_NUM;
emac_config.cnt_rx--;
if (emac_config.cnt_rx < 0) {
ESP_LOGE(TAG, "emac rx buf err!!\n");
}
emac_poll_rx_cmd();
xSemaphoreGiveRecursive( emac_rx_xMutex );
if (emac_config.emac_flow_ctrl_partner_support == true) {
portENTER_CRITICAL(&g_emac_mux);
if (pause_send == true && emac_config.cnt_rx < FLOW_CONTROL_LOW_WATERMARK) {
emac_send_pause_zero_frame_enable();
pause_send = false;
}
portEXIT_CRITICAL(&g_emac_mux);
}
}
static uint32_t IRAM_ATTR emac_get_rxbuf_count_in_intr(void)
{
uint32_t cnt = 0;
uint32_t cur_rx_desc = emac_read_rx_cur_reg();
struct dma_extended_desc *cur_desc = (struct dma_extended_desc *)cur_rx_desc;
while (cur_desc->basic.desc0 == EMAC_DESC_RX_OWN) {
cnt++;
cur_desc = (struct dma_extended_desc *)cur_desc->basic.desc3;
}
return cnt;
}
#if CONFIG_EMAC_L2_TO_L3_RX_BUF_MODE
static void emac_process_rx(void)
{
if (emac_config.emac_status == EMAC_RUNTIME_STOP) {
return;
}
uint32_t cur_rx_desc = emac_read_rx_cur_reg();
while (((uint32_t) & (emac_config.dma_erx[emac_config.dirty_rx].basic.desc0) != cur_rx_desc)) {
//copy data to lwip
emac_config.emac_tcpip_input((void *)(emac_config.dma_erx[emac_config.dirty_rx].basic.desc2),
(((emac_config.dma_erx[emac_config.dirty_rx].basic.desc0) >> EMAC_DESC_FRAME_LENGTH_S) & EMAC_DESC_FRAME_LENGTH) , NULL);
emac_clean_rx_desc(&(emac_config.dma_erx[emac_config.dirty_rx]), (emac_config.dma_erx[emac_config.dirty_rx].basic.desc2));
emac_config.dirty_rx = (emac_config.dirty_rx + 1) % DMA_RX_BUF_NUM;
//if open this ,one intr can do many intrs ?
cur_rx_desc = emac_read_rx_cur_reg();
}
emac_enable_rx_intr();
}
static void emac_process_rx_unavail(void)
{
if (emac_config.emac_status == EMAC_RUNTIME_STOP) {
return;
}
uint32_t dirty_cnt = 0;
while (dirty_cnt < DMA_RX_BUF_NUM) {
if (emac_config.dma_erx[emac_config.dirty_rx].basic.desc0 == EMAC_DESC_RX_OWN) {
break;
}
dirty_cnt ++;
//copy data to lwip
emac_config.emac_tcpip_input((void *)(emac_config.dma_erx[emac_config.dirty_rx].basic.desc2),
(((emac_config.dma_erx[emac_config.dirty_rx].basic.desc0) >> EMAC_DESC_FRAME_LENGTH_S) & EMAC_DESC_FRAME_LENGTH) , NULL);
emac_clean_rx_desc(&(emac_config.dma_erx[emac_config.dirty_rx]), (emac_config.dma_erx[emac_config.dirty_rx].basic.desc2));
emac_config.dirty_rx = (emac_config.dirty_rx + 1) % DMA_RX_BUF_NUM;
}
emac_enable_rx_intr();
emac_enable_rx_unavail_intr();
emac_poll_rx_cmd();
}
#else
static void emac_process_rx_unavail(void)
{
if (emac_config.emac_status == EMAC_RUNTIME_STOP) {
return;
}
xSemaphoreTakeRecursive( emac_rx_xMutex, ( TickType_t ) portMAX_DELAY );
while (emac_config.cnt_rx < DMA_RX_BUF_NUM) {
//copy data to lwip
emac_config.emac_tcpip_input((void *)(emac_config.dma_erx[emac_config.dirty_rx].basic.desc2),
(((emac_config.dma_erx[emac_config.dirty_rx].basic.desc0) >> EMAC_DESC_FRAME_LENGTH_S) & EMAC_DESC_FRAME_LENGTH) , NULL);
emac_config.cnt_rx++;
if (emac_config.cnt_rx > DMA_RX_BUF_NUM) {
ESP_LOGE(TAG, "emac rx unavail buf err !!\n");
}
emac_config.dirty_rx = (emac_config.dirty_rx + 1) % DMA_RX_BUF_NUM;
}
emac_enable_rx_intr();
emac_enable_rx_unavail_intr();
xSemaphoreGiveRecursive( emac_rx_xMutex );
}
static void emac_process_rx(void)
{
if (emac_config.emac_status == EMAC_RUNTIME_STOP) {
return;
}
uint32_t cur_rx_desc = emac_read_rx_cur_reg();
xSemaphoreTakeRecursive( emac_rx_xMutex, ( TickType_t ) portMAX_DELAY );
if (((uint32_t) & (emac_config.dma_erx[emac_config.dirty_rx].basic.desc0) != cur_rx_desc)) {
while (((uint32_t) & (emac_config.dma_erx[emac_config.dirty_rx].basic.desc0) != cur_rx_desc) && emac_config.cnt_rx < DMA_RX_BUF_NUM ) {
//copy data to lwip
emac_config.emac_tcpip_input((void *)(emac_config.dma_erx[emac_config.dirty_rx].basic.desc2),
(((emac_config.dma_erx[emac_config.dirty_rx].basic.desc0) >> EMAC_DESC_FRAME_LENGTH_S) & EMAC_DESC_FRAME_LENGTH) , NULL);
emac_config.cnt_rx++;
if (emac_config.cnt_rx > DMA_RX_BUF_NUM ) {
ESP_LOGE(TAG, "emac rx buf err!!\n");
}
emac_config.dirty_rx = (emac_config.dirty_rx + 1) % DMA_RX_BUF_NUM;
cur_rx_desc = emac_read_rx_cur_reg();
}
} else {
if (emac_config.cnt_rx < DMA_RX_BUF_NUM) {
if ((emac_config.dma_erx[emac_config.dirty_rx].basic.desc0 & EMAC_DESC_RX_OWN) == 0) {
while (emac_config.cnt_rx < DMA_RX_BUF_NUM) {
//copy data to lwip
emac_config.emac_tcpip_input((void *)(emac_config.dma_erx[emac_config.dirty_rx].basic.desc2),
(((emac_config.dma_erx[emac_config.dirty_rx].basic.desc0) >> EMAC_DESC_FRAME_LENGTH_S) & EMAC_DESC_FRAME_LENGTH) , NULL);
emac_config.cnt_rx++;
if (emac_config.cnt_rx > DMA_RX_BUF_NUM) {
ESP_LOGE(TAG, "emac rx buf err!!!\n");
}
emac_config.dirty_rx = (emac_config.dirty_rx + 1) % DMA_RX_BUF_NUM;
}
}
}
}
emac_enable_rx_intr();
xSemaphoreGiveRecursive( emac_rx_xMutex );
}
#endif
//TODO other events need to do something
static void IRAM_ATTR emac_process_intr(void *arg)
{
uint32_t event;
event = REG_READ(EMAC_DMASTATUS_REG);
//clr intrs
REG_WRITE(EMAC_DMASTATUS_REG, event);
if (event & EMAC_RECV_INT) {
emac_disable_rx_intr();
if (emac_config.emac_flow_ctrl_partner_support == true) {
if (emac_get_rxbuf_count_in_intr() < FLOW_CONTROL_HIGH_WATERMARK && pause_send == false ) {
pause_send = true;
emac_send_pause_frame_enable();
}
}
emac_post(SIG_EMAC_RX_DONE, 0);
}
if (event & EMAC_RECV_BUF_UNAVAIL) {
emac_disable_rx_unavail_intr();
emac_post(SIG_EMAC_RX_UNAVAIL, 0);
}
if (event & EMAC_TRANS_INT) {
emac_post(SIG_EMAC_TX_DONE, 0);
}
}
static void emac_set_macaddr_reg(void)
{
REG_SET_FIELD(EMAC_GMACADDR0HIGH_REG, EMAC_MAC_ADDRESS0_HI, (emac_config.macaddr[0] << 8) | (emac_config.macaddr[1]));
REG_WRITE(EMAC_GMACADDR0LOW_REG, (emac_config.macaddr[2] << 24) | (emac_config.macaddr[3] << 16) | (emac_config.macaddr[4] << 8) | (emac_config.macaddr[5]));
}
static void emac_check_phy_init(void)
{
emac_config.emac_phy_check_init();
if (emac_config.emac_phy_get_duplex_mode() == ETH_MODE_FULLDUPLEX) {
REG_SET_BIT(EMAC_GMACCONFIG_REG, EMAC_GMACDUPLEX);
} else {
REG_CLR_BIT(EMAC_GMACCONFIG_REG, EMAC_GMACDUPLEX);
}
if (emac_config.emac_phy_get_speed_mode() == ETH_SPEED_MODE_100M) {
REG_SET_BIT(EMAC_GMACCONFIG_REG, EMAC_GMACFESPEED);
} else {
REG_CLR_BIT(EMAC_GMACCONFIG_REG, EMAC_GMACFESPEED);
}
#if CONFIG_EMAC_L2_TO_L3_RX_BUF_MODE
emac_disable_flowctrl();
emac_config.emac_flow_ctrl_partner_support = false;
#else
if (emac_config.emac_flow_ctrl_enable == true) {
if (emac_config.emac_phy_get_partner_pause_enable() == true && emac_config.emac_phy_get_duplex_mode() == ETH_MODE_FULLDUPLEX) {
emac_enable_flowctrl();
emac_config.emac_flow_ctrl_partner_support = true;
} else {
emac_disable_flowctrl();
emac_config.emac_flow_ctrl_partner_support = false;
}
} else {
emac_disable_flowctrl();
emac_config.emac_flow_ctrl_partner_support = false;
}
#endif
emac_mac_enable_txrx();
}
static void emac_process_link_updown(bool link_status)
{
system_event_t evt;
uint8_t i = 0;
emac_config.phy_link_up = link_status;
if (link_status == true) {
emac_check_phy_init();
ESP_LOGI(TAG, "eth link_up!!!");
emac_enable_dma_tx();
emac_enable_dma_rx();
for (i = 0; i < PHY_LINK_CHECK_NUM; i++) {
emac_check_phy_init();
}
evt.event_id = SYSTEM_EVENT_ETH_CONNECTED;
} else {
ESP_LOGI(TAG, "eth link_down!!!");
emac_disable_dma_tx();
emac_disable_dma_rx();
evt.event_id = SYSTEM_EVENT_ETH_DISCONNECTED;
}
esp_event_send(&evt);
}
static void emac_hw_init(void)
{
//init chain
emac_init_dma_chain();
//get hw features TODO
//ipc TODO
}
esp_err_t esp_eth_tx(uint8_t *buf, uint16_t size)
{
esp_err_t ret = ESP_OK;
if (emac_config.emac_status != EMAC_RUNTIME_START || emac_config.emac_status == EMAC_RUNTIME_NOT_INIT) {
ESP_LOGI(TAG, "tx netif close");
ret = ERR_IF;
return ret;
}
xSemaphoreTakeRecursive( emac_tx_xMutex, ( TickType_t ) portMAX_DELAY );
if (emac_config.cnt_tx == DMA_TX_BUF_NUM - 1) {
ESP_LOGD(TAG, "tx buf full");
ret = ERR_MEM;
goto _exit;
}
memcpy((uint8_t *)(emac_config.dma_etx[emac_config.cur_tx].basic.desc2), (uint8_t *)buf, size);
emac_setup_tx_desc(&(emac_config.dma_etx[emac_config.cur_tx]), size);
emac_config.cnt_tx ++;
emac_config.cur_tx = (emac_config.cur_tx + 1) % DMA_TX_BUF_NUM ;
emac_poll_tx_cmd();
_exit:
xSemaphoreGiveRecursive( emac_tx_xMutex );
return ret;
}
static void emac_init_default_data(void)
{
memset((uint8_t *)&emac_config, 0, sizeof(struct emac_config_data));
}
void emac_process_link_check(void)
{
if (emac_config.emac_status != EMAC_RUNTIME_START ||
emac_config.emac_status == EMAC_RUNTIME_NOT_INIT) {
return;
}
if (emac_config.emac_phy_check_link() == true ) {
if (emac_config.phy_link_up == false) {
emac_process_link_updown(true);
}
} else {
if (emac_config.phy_link_up == true) {
emac_process_link_updown(false);
}
}
}
void emac_link_check_func(void *pv_parameters)
{
emac_post(SIG_EMAC_CHECK_LINK, 0);
}
static bool emac_link_check_timer_init(void)
{
emac_timer = xTimerCreate("emac_timer", (2000 / portTICK_PERIOD_MS),
pdTRUE, (void *)rand(), emac_link_check_func);
if (emac_timer == NULL) {
return false;
} else {
return true;
}
}
static bool emac_link_check_timer_start(void)
{
if (xTimerStart(emac_timer, portMAX_DELAY) != pdPASS) {
return false;
} else {
return true;
}
}
static bool emac_link_check_timer_stop(void)
{
if (xTimerStop(emac_timer, portMAX_DELAY) != pdPASS) {
return false;
} else {
return true;
}
}
static bool emac_link_check_timer_delete(void)
{
xTimerDelete(emac_timer, portMAX_DELAY);
emac_timer = NULL;
return true;
}
static void emac_start(void *param)
{
struct emac_post_cmd *post_cmd = (struct emac_post_cmd *)param;
struct emac_open_cmd *cmd = (struct emac_open_cmd *)(post_cmd->cmd);
ESP_LOGI(TAG , "emac start !!!\n");
cmd->err = EMAC_CMD_OK;
emac_enable_clk(true);
emac_reset();
emac_macaddr_init();
emac_check_mac_addr();
emac_set_mac_addr();
emac_set_macaddr_reg();
emac_set_tx_base_reg();
emac_set_rx_base_reg();
emac_mac_init();
emac_config.phy_init();
//ptp TODO
emac_enable_intr();
emac_config.emac_status = EMAC_RUNTIME_START;
system_event_t evt;
evt.event_id = SYSTEM_EVENT_ETH_START;
esp_event_send(&evt);
//set a timer to check link up status
if (emac_link_check_timer_init() == true) {
if (emac_link_check_timer_start() != true) {
cmd->err = EMAC_CMD_FAIL;
emac_link_check_timer_delete();
}
} else {
cmd->err = EMAC_CMD_FAIL;
}
if (post_cmd->post_type == EMAC_POST_SYNC) {
xSemaphoreGive(emac_g_sem);
}
ESP_LOGI(TAG, "emac start success !!!");
}
esp_err_t esp_eth_enable(void)
{
struct emac_post_cmd post_cmd;
struct emac_open_cmd open_cmd;
post_cmd.cmd = (void *)(&open_cmd);
open_cmd.err = EMAC_CMD_OK;
if (emac_config.emac_status == EMAC_RUNTIME_START) {
open_cmd.err = EMAC_CMD_OK;
return open_cmd.err;
}
if (emac_config.emac_status != EMAC_RUNTIME_NOT_INIT) {
if (emac_ioctl(SIG_EMAC_START, (emac_par_t)(&post_cmd)) != 0) {
open_cmd.err = EMAC_CMD_FAIL;
}
} else {
open_cmd.err = EMAC_CMD_FAIL;
}
return open_cmd.err;
}
static void emac_stop(void *param)
{
struct emac_post_cmd *post_cmd = (struct emac_post_cmd *)param;
ESP_LOGI(TAG, "emac stop");
emac_link_check_timer_stop();
emac_link_check_timer_delete();
emac_process_link_updown(false);
emac_disable_intr();
emac_reset_dma_chain();
emac_reset();
emac_enable_clk(false);
emac_config.emac_status = EMAC_RUNTIME_STOP;
system_event_t evt;
evt.event_id = SYSTEM_EVENT_ETH_STOP;
esp_event_send(&evt);
if (post_cmd->post_type == EMAC_POST_SYNC) {
xSemaphoreGive(emac_g_sem);
}
ESP_LOGI(TAG, "emac stop success !!!");
}
esp_err_t esp_eth_disable(void)
{
struct emac_post_cmd post_cmd;
struct emac_close_cmd close_cmd;
post_cmd.cmd = (void *)(&close_cmd);
close_cmd.err = EMAC_CMD_OK;
if (emac_config.emac_status == EMAC_RUNTIME_STOP) {
close_cmd.err = EMAC_CMD_OK;
return close_cmd.err;
}
if (emac_config.emac_status == EMAC_RUNTIME_START) {
if (emac_ioctl(SIG_EMAC_STOP, (emac_par_t)(&post_cmd)) != 0) {
close_cmd.err = EMAC_CMD_FAIL;
}
} else {
close_cmd.err = EMAC_CMD_FAIL;
}
return close_cmd.err;
}
static esp_err_t emac_ioctl(emac_sig_t sig, emac_par_t par)
{
esp_err_t ret = ESP_OK;
struct emac_post_cmd *post_cmd = (struct emac_post_cmd *)par;
xTaskHandle task_hdl = xTaskGetCurrentTaskHandle();
if (emac_task_hdl != task_hdl) {
post_cmd->post_type = EMAC_POST_SYNC;
if (emac_post(sig, par) != ESP_OK) {
ret = ESP_FAIL;
return ret;
};
if (xSemaphoreTake(emac_g_sem, portMAX_DELAY) == pdTRUE) {
return ret;
}
} else {
post_cmd->post_type = EMAC_POST_ASYNC;
switch (sig) {
case SIG_EMAC_RX_DONE:
emac_process_rx();
break;
case SIG_EMAC_TX_DONE:
emac_process_tx();
break;
case SIG_EMAC_START:
emac_start((void *)par);
break;
case SIG_EMAC_STOP:
emac_stop((void *)par);
break;
default:
ESP_LOGE(TAG, "unexpect sig %d", sig);
break;
}
}
return ret;
}
void emac_task(void *pv)
{
emac_event_t e;
for (;;) {
if (xQueueReceive(emac_xqueue, &e, (portTickType)portMAX_DELAY) == pdTRUE) {
portENTER_CRITICAL(&g_emac_mux);
emac_sig_cnt[e.sig]--;
portEXIT_CRITICAL(&g_emac_mux);
switch (e.sig) {
case SIG_EMAC_RX_DONE:
emac_process_rx();
break;
case SIG_EMAC_RX_UNAVAIL:
emac_process_rx_unavail();
break;
case SIG_EMAC_TX_DONE:
emac_process_tx();
break;
case SIG_EMAC_START:
emac_start((void *)e.par);
break;
case SIG_EMAC_STOP:
emac_stop((void *)e.par);
break;
case SIG_EMAC_CHECK_LINK:
emac_process_link_check();
break;
default:
ESP_LOGE(TAG, "unexpect sig %d", e.sig);
break;
}
}
}
}
esp_err_t IRAM_ATTR emac_post(emac_sig_t sig, emac_par_t par)
{
if (sig <= SIG_EMAC_RX_DONE) {
if (emac_sig_cnt[sig]) {
return ESP_OK;
} else {
emac_sig_cnt[sig]++;
emac_event_t evt;
signed portBASE_TYPE ret;
evt.sig = sig;
evt.par = par;
portBASE_TYPE tmp;
ret = xQueueSendFromISR(emac_xqueue, &evt, &tmp);
if (tmp != pdFALSE) {
portYIELD_FROM_ISR();
}
if (ret != pdPASS) {
return ESP_FAIL;
}
}
} else {
portENTER_CRITICAL(&g_emac_mux);
emac_sig_cnt[sig]++;
portEXIT_CRITICAL(&g_emac_mux);
emac_event_t evt;
evt.sig = sig;
evt.par = par;
if (xQueueSend(emac_xqueue, &evt, 10 / portTICK_PERIOD_MS) != pdTRUE) {
return ESP_FAIL;
}
}
return ESP_OK;
}
esp_err_t esp_eth_init(eth_config_t *config)
{
esp_err_t ret = ESP_OK;
#if !CONFIG_ETHERNET
ESP_LOGI(TAG, "eth driver init fail,please make menuconfig and enable ethernet .");
ret = ESP_FAIL;
goto _exit;
#endif
emac_init_default_data();
if (config != NULL ) {
emac_set_user_config_data(config);
}
ret = emac_verify_args();
if (ret != ESP_OK) {
goto _exit;
}
emac_config.emac_phy_power_enable(true);
//before set emac reg must enable clk
emac_enable_clk(true);
REG_SET_FIELD(EMAC_EX_PHYINF_CONF_REG, EMAC_EX_PHY_INTF_SEL, EMAC_EX_PHY_INTF_RMII);
emac_dma_init();
if (emac_config.mac_mode == ETH_MODE_RMII) {
emac_set_clk_rmii();
} else {
emac_set_clk_mii();
}
emac_config.emac_gpio_config();
ESP_LOGI(TAG, "mac version %04xa", emac_read_mac_version());
emac_hw_init();
//watchdog TODO
//init task for emac
emac_g_sem = xSemaphoreCreateBinary();
emac_rx_xMutex = xSemaphoreCreateRecursiveMutex();
emac_tx_xMutex = xSemaphoreCreateRecursiveMutex();
emac_xqueue = xQueueCreate(EMAC_EVT_QNUM, sizeof(emac_event_t));
xTaskCreate(emac_task, "emacT", 2048, NULL, EMAC_TASK_PRIORITY, &emac_task_hdl);
emac_enable_clk(false);
esp_intr_alloc(ETS_ETH_MAC_INTR_SOURCE, 0, emac_process_intr, NULL, NULL);
emac_config.emac_status = EMAC_RUNTIME_INIT;
_exit:
return ret;
}
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