373 lines
13 KiB
C
373 lines
13 KiB
C
// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <string.h>
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#include <stdlib.h>
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#include <sys/cdefs.h>
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#include "esp_log.h"
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#include "esp_eth.h"
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#include "eth_phy_regs_struct.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "driver/gpio.h"
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static const char *TAG = "ip101";
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#define PHY_CHECK(a, str, goto_tag, ...) \
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do \
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{ \
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if (!(a)) \
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{ \
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ESP_LOGE(TAG, "%s(%d): " str, __FUNCTION__, __LINE__, ##__VA_ARGS__); \
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goto goto_tag; \
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} \
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} while (0)
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/***************Vendor Specific Register***************/
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/**
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* @brief PCR(Page Control Register)
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*
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*/
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typedef union {
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struct {
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uint32_t register_page_select : 5; /* Select register page, default is 16 */
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uint32_t reserved : 11; /* Reserved */
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};
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uint32_t val;
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} pcr_reg_t;
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#define ETH_PHY_PCR_REG_ADDR (0x14)
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/**
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* @brief ISR(Interrupt Status Register), Page 16
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*
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*/
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typedef union {
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struct {
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uint32_t link_changed : 1; /* Flag to indicate link status change interrupt */
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uint32_t duplex_changed : 1; /* Flag to indicate duplex change interrupt */
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uint32_t speed_changed : 1; /* Flag to indicate speed change interrupt */
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uint32_t intr_status : 1; /* Flag to indicate interrupt status */
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uint32_t reserved1 : 4; /* Reserved */
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uint32_t link_mask : 1; /* Mask link change interrupt */
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uint32_t duplex_mask : 1; /* Mask duplex change interrupt */
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uint32_t speed_mask : 1; /* Mask speed change interrupt */
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uint32_t all_mask : 1; /* Mask all interrupt */
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uint32_t reserved2 : 3; /* Reserved */
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uint32_t use_intr_pin : 1; /* Set high to use INTR and INTR_32 as an interrupt pin */
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};
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uint32_t val;
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} isr_reg_t;
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#define ETH_PHY_ISR_REG_ADDR (0x11)
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/**
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* @brief PHY MDI/MDIX Control and Specific Status Register, Page 16
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*
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*/
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typedef union {
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struct {
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uint32_t op_mode : 3; /* Operation Mode Idicator */
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uint32_t force_mdix : 1; /* Force the MDIX channel to be selected */
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uint32_t reserved1 : 4; /* Reserved */
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uint32_t link_up : 1; /* Indicate the link status is OK or FAIL */
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uint32_t reserved2 : 7; /* Reserved */
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};
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uint32_t val;
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} cssr_reg_t;
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#define ETH_PHY_CSSR_REG_ADDR (0x1E)
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/**
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* @brief PSCR(PHY Specific Control Register), Page 1
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*
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*/
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typedef union {
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struct {
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uint32_t reserved1 : 7; /* Reserved */
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uint32_t force_link_100 : 1; /* Force Link 100 */
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uint32_t force_link_10 : 1; /* Force Link 10 */
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uint32_t reserved2 : 7; /* Reserved */
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};
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uint32_t val;
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} pscr_reg_t;
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#define ETH_PHY_PSCR_REG_ADDR (0x11)
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typedef struct {
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esp_eth_phy_t parent;
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esp_eth_mediator_t *eth;
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uint32_t addr;
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uint32_t reset_timeout_ms;
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uint32_t autonego_timeout_ms;
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eth_link_t link_status;
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int reset_gpio_num;
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} phy_ip101_t;
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static esp_err_t ip101_page_select(phy_ip101_t *ip101, uint32_t page)
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{
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esp_eth_mediator_t *eth = ip101->eth;
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pcr_reg_t pcr = {
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.register_page_select = page
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};
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PHY_CHECK(eth->phy_reg_write(eth, ip101->addr, ETH_PHY_PCR_REG_ADDR, pcr.val) == ESP_OK, "write PCR failed", err);
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return ESP_OK;
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err:
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return ESP_FAIL;
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}
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static esp_err_t ip101_update_link_duplex_speed(phy_ip101_t *ip101)
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{
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esp_eth_mediator_t *eth = ip101->eth;
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eth_speed_t speed = ETH_SPEED_10M;
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eth_duplex_t duplex = ETH_DUPLEX_HALF;
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cssr_reg_t cssr;
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PHY_CHECK(ip101_page_select(ip101, 16) == ESP_OK, "select page 16 failed", err);
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PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_CSSR_REG_ADDR, &(cssr.val)) == ESP_OK,
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"read CSSR failed", err);
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eth_link_t link = cssr.link_up ? ETH_LINK_UP : ETH_LINK_DOWN;
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/* check if link status changed */
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if (ip101->link_status != link) {
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/* when link up, read negotiation result */
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if (link == ETH_LINK_UP) {
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switch (cssr.op_mode) {
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case 1: //10M Half
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speed = ETH_SPEED_10M;
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duplex = ETH_DUPLEX_HALF;
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break;
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case 2: //100M Half
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speed = ETH_SPEED_100M;
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duplex = ETH_DUPLEX_HALF;
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break;
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case 5: //10M Full
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speed = ETH_SPEED_10M;
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duplex = ETH_DUPLEX_FULL;
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break;
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case 6: //100M Full
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speed = ETH_SPEED_100M;
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duplex = ETH_DUPLEX_FULL;
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break;
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default:
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break;
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}
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PHY_CHECK(eth->on_state_changed(eth, ETH_STATE_SPEED, (void *)speed) == ESP_OK,
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"change speed failed", err);
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PHY_CHECK(eth->on_state_changed(eth, ETH_STATE_DUPLEX, (void *)duplex) == ESP_OK,
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"change duplex failed", err);
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}
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PHY_CHECK(eth->on_state_changed(eth, ETH_STATE_LINK, (void *)link) == ESP_OK,
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"chagne link failed", err);
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ip101->link_status = link;
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}
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return ESP_OK;
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err:
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return ESP_FAIL;
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}
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static esp_err_t ip101_set_mediator(esp_eth_phy_t *phy, esp_eth_mediator_t *eth)
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{
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PHY_CHECK(eth, "can't set mediator to null", err);
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phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
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ip101->eth = eth;
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return ESP_OK;
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err:
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return ESP_ERR_INVALID_ARG;
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}
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static esp_err_t ip101_get_link(esp_eth_phy_t *phy)
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{
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phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
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/* Updata information about link, speed, duplex */
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PHY_CHECK(ip101_update_link_duplex_speed(ip101) == ESP_OK, "update link duplex speed failed", err);
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return ESP_OK;
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err:
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return ESP_FAIL;
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}
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static esp_err_t ip101_reset(esp_eth_phy_t *phy)
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{
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phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
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ip101->link_status = ETH_LINK_DOWN;
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esp_eth_mediator_t *eth = ip101->eth;
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bmcr_reg_t bmcr = {.reset = 1};
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PHY_CHECK(eth->phy_reg_write(eth, ip101->addr, ETH_PHY_BMCR_REG_ADDR, bmcr.val) == ESP_OK,
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"write BMCR failed", err);
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/* wait for reset complete */
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uint32_t to = 0;
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for (to = 0; to < ip101->reset_timeout_ms / 10; to++) {
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vTaskDelay(pdMS_TO_TICKS(10));
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PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_BMCR_REG_ADDR, &(bmcr.val)) == ESP_OK,
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"read BMCR failed", err);
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if (!bmcr.reset) {
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break;
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}
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}
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PHY_CHECK(to < ip101->reset_timeout_ms / 10, "reset timeout", err);
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return ESP_OK;
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err:
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return ESP_FAIL;
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}
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static esp_err_t ip101_reset_hw(esp_eth_phy_t *phy)
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{
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phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
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if (ip101->reset_gpio_num >= 0) {
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gpio_pad_select_gpio(ip101->reset_gpio_num);
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gpio_set_direction(ip101->reset_gpio_num, GPIO_MODE_OUTPUT);
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gpio_set_level(ip101->reset_gpio_num, 0);
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gpio_set_level(ip101->reset_gpio_num, 1);
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}
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return ESP_OK;
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}
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static esp_err_t ip101_negotiate(esp_eth_phy_t *phy)
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{
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phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
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esp_eth_mediator_t *eth = ip101->eth;
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/* Restart auto negotiation */
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bmcr_reg_t bmcr = {
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.speed_select = 1, /* 100Mbps */
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.duplex_mode = 1, /* Full Duplex */
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.en_auto_nego = 1, /* Auto Negotiation */
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.restart_auto_nego = 1 /* Restart Auto Negotiation */
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};
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PHY_CHECK(eth->phy_reg_write(eth, ip101->addr, ETH_PHY_BMCR_REG_ADDR, bmcr.val) == ESP_OK,
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"write BMCR failed", err);
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/* Wait for auto negotiation complete */
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bmsr_reg_t bmsr;
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uint32_t to = 0;
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for (to = 0; to < ip101->autonego_timeout_ms / 10; to++) {
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vTaskDelay(pdMS_TO_TICKS(10));
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PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_BMSR_REG_ADDR, &(bmsr.val)) == ESP_OK,
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"read BMSR failed", err);
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if (bmsr.auto_nego_complete) {
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break;
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}
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}
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/* Auto negotiation failed, maybe no network cable plugged in, so output a warning */
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if (to >= ip101->autonego_timeout_ms / 10) {
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ESP_LOGW(TAG, "auto negotiation timeout");
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}
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/* Updata information about link, speed, duplex */
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PHY_CHECK(ip101_update_link_duplex_speed(ip101) == ESP_OK, "update link duplex speed failed", err);
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return ESP_OK;
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err:
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return ESP_FAIL;
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}
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static esp_err_t ip101_pwrctl(esp_eth_phy_t *phy, bool enable)
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{
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phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
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esp_eth_mediator_t *eth = ip101->eth;
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bmcr_reg_t bmcr;
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PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_BMCR_REG_ADDR, &(bmcr.val)) == ESP_OK,
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"read BMCR failed", err);
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if (!enable) {
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/* Enable IEEE Power Down Mode */
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bmcr.power_down = 1;
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} else {
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/* Disable IEEE Power Down Mode */
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bmcr.power_down = 0;
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}
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PHY_CHECK(eth->phy_reg_write(eth, ip101->addr, ETH_PHY_BMCR_REG_ADDR, bmcr.val) == ESP_OK,
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"write BMCR failed", err);
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PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_BMCR_REG_ADDR, &(bmcr.val)) == ESP_OK,
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"read BMCR failed", err);
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if (!enable) {
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PHY_CHECK(bmcr.power_down == 1, "power down failed", err);
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} else {
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PHY_CHECK(bmcr.power_down == 0, "power up failed", err);
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}
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return ESP_OK;
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err:
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return ESP_FAIL;
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}
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static esp_err_t ip101_set_addr(esp_eth_phy_t *phy, uint32_t addr)
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{
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phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
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ip101->addr = addr;
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return ESP_OK;
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}
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static esp_err_t ip101_get_addr(esp_eth_phy_t *phy, uint32_t *addr)
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{
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PHY_CHECK(addr, "addr can't be null", err);
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phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
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*addr = ip101->addr;
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return ESP_OK;
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err:
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return ESP_ERR_INVALID_ARG;
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}
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static esp_err_t ip101_del(esp_eth_phy_t *phy)
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{
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phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
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free(ip101);
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return ESP_OK;
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}
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static esp_err_t ip101_init(esp_eth_phy_t *phy)
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{
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phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
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esp_eth_mediator_t *eth = ip101->eth;
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// Detect PHY address
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if (ip101->addr == ESP_ETH_PHY_ADDR_AUTO) {
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PHY_CHECK(esp_eth_detect_phy_addr(eth, &ip101->addr) == ESP_OK, "Detect PHY address failed", err);
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}
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/* Power on Ethernet PHY */
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PHY_CHECK(ip101_pwrctl(phy, true) == ESP_OK, "power control failed", err);
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/* Reset Ethernet PHY */
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PHY_CHECK(ip101_reset(phy) == ESP_OK, "reset failed", err);
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/* Check PHY ID */
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phyidr1_reg_t id1;
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phyidr2_reg_t id2;
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PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_IDR1_REG_ADDR, &(id1.val)) == ESP_OK, "read ID1 failed", err);
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PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_IDR2_REG_ADDR, &(id2.val)) == ESP_OK, "read ID2 failed", err);
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PHY_CHECK(id1.oui_msb == 0x243 && id2.oui_lsb == 0x3 && id2.vendor_model == 0x5, "wrong chip ID", err);
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return ESP_OK;
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err:
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return ESP_FAIL;
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}
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static esp_err_t ip101_deinit(esp_eth_phy_t *phy)
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{
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/* Power off Ethernet PHY */
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PHY_CHECK(ip101_pwrctl(phy, false) == ESP_OK, "power control failed", err);
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return ESP_OK;
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err:
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return ESP_FAIL;
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}
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esp_eth_phy_t *esp_eth_phy_new_ip101(const eth_phy_config_t *config)
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{
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PHY_CHECK(config, "can't set phy config to null", err);
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phy_ip101_t *ip101 = calloc(1, sizeof(phy_ip101_t));
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PHY_CHECK(ip101, "calloc ip101 failed", err);
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ip101->addr = config->phy_addr;
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ip101->reset_timeout_ms = config->reset_timeout_ms;
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ip101->reset_gpio_num = config->reset_gpio_num;
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ip101->link_status = ETH_LINK_DOWN;
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ip101->autonego_timeout_ms = config->autonego_timeout_ms;
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ip101->parent.reset = ip101_reset;
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ip101->parent.reset_hw = ip101_reset_hw;
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ip101->parent.init = ip101_init;
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ip101->parent.deinit = ip101_deinit;
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ip101->parent.set_mediator = ip101_set_mediator;
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ip101->parent.negotiate = ip101_negotiate;
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ip101->parent.get_link = ip101_get_link;
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ip101->parent.pwrctl = ip101_pwrctl;
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ip101->parent.get_addr = ip101_get_addr;
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ip101->parent.set_addr = ip101_set_addr;
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ip101->parent.del = ip101_del;
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return &(ip101->parent);
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err:
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return NULL;
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}
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