OVMS3-idf/components/esp_eth/src/esp_eth_phy_ip101.c

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2019-04-10 08:24:50 +00:00
// Copyright 2019 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 <string.h>
#include <stdlib.h>
#include <sys/cdefs.h>
#include "esp_log.h"
#include "esp_eth.h"
#include "eth_phy_regs_struct.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
static const char *TAG = "ip101";
#define PHY_CHECK(a, str, goto_tag, ...) \
do \
{ \
if (!(a)) \
{ \
ESP_LOGE(TAG, "%s(%d): " str, __FUNCTION__, __LINE__, ##__VA_ARGS__); \
goto goto_tag; \
} \
} while (0)
/***************Vendor Specific Register***************/
/**
* @brief PCR(Page Control Register)
*
*/
typedef union {
struct {
uint32_t register_page_select : 5; /* Select register page, default is 16 */
uint32_t reserved : 11; /* Reserved */
};
uint32_t val;
} pcr_reg_t;
#define ETH_PHY_PCR_REG_ADDR (0x14)
/**
* @brief ISR(Interrupt Status Register), Page 16
*
*/
typedef union {
struct {
uint32_t link_changed : 1; /* Flag to indicate link status change interrupt */
uint32_t duplex_changed : 1; /* Flag to indicate duplex change interrupt */
uint32_t speed_changed : 1; /* Flag to indicate speed change interrupt */
uint32_t intr_status : 1; /* Flag to indicate interrupt status */
uint32_t reserved1 : 4; /* Reserved */
uint32_t link_mask : 1; /* Mask link change interrupt */
uint32_t duplex_mask : 1; /* Mask duplex change interrupt */
uint32_t speed_mask : 1; /* Mask speed change interrupt */
uint32_t all_mask : 1; /* Mask all interrupt */
uint32_t reserved2 : 3; /* Reserved */
uint32_t use_intr_pin : 1; /* Set high to use INTR and INTR_32 as an interrupt pin */
};
uint32_t val;
} isr_reg_t;
#define ETH_PHY_ISR_REG_ADDR (0x11)
/**
* @brief PHY MDI/MDIX Control and Specific Status Register, Page 16
*
*/
typedef union {
struct {
uint32_t op_mode : 3; /* Operation Mode Idicator */
uint32_t force_mdix : 1; /* Force the MDIX channel to be selected */
uint32_t reserved1 : 4; /* Reserved */
uint32_t link_up : 1; /* Indicate the link status is OK or FAIL */
uint32_t reserved2 : 7; /* Reserved */
};
uint32_t val;
} cssr_reg_t;
#define ETH_PHY_CSSR_REG_ADDR (0x1E)
/**
* @brief PSCR(PHY Specific Control Register), Page 1
*
*/
typedef union {
struct {
uint32_t reserved1 : 7; /* Reserved */
uint32_t force_link_100 : 1; /* Force Link 100 */
uint32_t force_link_10 : 1; /* Force Link 10 */
uint32_t reserved2 : 7; /* Reserved */
};
uint32_t val;
} pscr_reg_t;
#define ETH_PHY_PSCR_REG_ADDR (0x11)
typedef struct {
esp_eth_phy_t parent;
esp_eth_mediator_t *eth;
const char *name;
uint32_t addr;
uint32_t reset_timeout_ms;
uint32_t autonego_timeout_ms;
eth_link_t link_status;
} phy_ip101_t;
static esp_err_t ip101_page_select(phy_ip101_t *ip101, uint32_t page)
{
esp_eth_mediator_t *eth = ip101->eth;
pcr_reg_t pcr = {
.register_page_select = page
};
PHY_CHECK(eth->phy_reg_write(eth, ip101->addr, ETH_PHY_PCR_REG_ADDR, pcr.val) == ESP_OK, "write PCR failed", err);
return ESP_OK;
err:
return ESP_FAIL;
}
static esp_err_t ip101_set_mediator(esp_eth_phy_t *phy, esp_eth_mediator_t *eth)
{
PHY_CHECK(eth, "can't set mediator for ip101 to null", err);
phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
ip101->eth = eth;
return ESP_OK;
err:
return ESP_ERR_INVALID_ARG;
}
static esp_err_t ip101_get_link(esp_eth_phy_t *phy)
{
phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
esp_eth_mediator_t *eth = ip101->eth;
bmsr_reg_t bmsr;
PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_BMSR_REG_ADDR, &(bmsr.val)) == ESP_OK, "read BMSR failed", err);
eth_link_t link = bmsr.link_status ? ETH_LINK_UP : ETH_LINK_DOWN;
if (ip101->link_status != link) {
if (link == ETH_LINK_UP) {
phy->negotiate(phy);
} else {
PHY_CHECK(eth->on_state_changed(eth, ETH_STATE_LINK, (void *)link) == ESP_OK, "send link event failed", err);
ip101->link_status = link;
}
}
return ESP_OK;
err:
return ESP_FAIL;
}
static esp_err_t ip101_reset(esp_eth_phy_t *phy)
{
phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
esp_eth_mediator_t *eth = ip101->eth;
bmcr_reg_t bmcr = {.reset = 1};
PHY_CHECK(eth->phy_reg_write(eth, ip101->addr, ETH_PHY_BMCR_REG_ADDR, bmcr.val) == ESP_OK, "write BMCR failed", err);
/* wait for reset complete */
uint32_t to = 0;
for (to = 0; to < ip101->reset_timeout_ms / 10; to++) {
vTaskDelay(pdMS_TO_TICKS(10));
PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_BMCR_REG_ADDR, &(bmcr.val)) == ESP_OK, "read BMCR failed", err);
if (!bmcr.reset) {
break;
}
}
PHY_CHECK(to < ip101->reset_timeout_ms / 10, "PHY reset timeout", err);
return ESP_OK;
err:
return ESP_FAIL;
}
static esp_err_t ip101_negotiate(esp_eth_phy_t *phy)
{
phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
esp_eth_mediator_t *eth = ip101->eth;
/* Start auto negotiation */
bmcr_reg_t bmcr = {
.speed_select = 1, /* 100Mbps */
.duplex_mode = 1, /* Full Duplex */
.en_auto_nego = 1, /* Auto Negotiation */
.restart_auto_nego = 1 /* Restart Auto Negotiation */
};
PHY_CHECK(eth->phy_reg_write(eth, ip101->addr, ETH_PHY_BMCR_REG_ADDR, bmcr.val) == ESP_OK, "write BMCR failed", err);
/* Wait for auto negotiation complete */
bmsr_reg_t bmsr;
uint32_t to = 0;
for (to = 0; to < ip101->autonego_timeout_ms / 10; to++) {
vTaskDelay(pdMS_TO_TICKS(10));
PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_BMSR_REG_ADDR, &(bmsr.val)) == ESP_OK, "read BMSR failed", err);
if (bmsr.auto_nego_complete) {
break;
}
}
/* Auto negotiation failed, maybe no network cable plugged in, so output a warning */
if (to >= ip101->autonego_timeout_ms / 10) {
ESP_LOGW(TAG, "Ethernet PHY auto negotiation timeout");
}
PHY_CHECK(ip101_page_select(ip101, 16) == ESP_OK, "select page failed", err);
/* Updata information about link, speed, duplex */
cssr_reg_t cssr;
PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_CSSR_REG_ADDR, &(cssr.val)) == ESP_OK, "read CSSR failed", err);
PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_BMSR_REG_ADDR, &(bmsr.val)) == ESP_OK, "read BMSR failed", err);
eth_link_t link = bmsr.link_status ? ETH_LINK_UP : ETH_LINK_DOWN;
eth_speed_t speed = ETH_SPEED_10M;
eth_duplex_t duplex = ETH_DUPLEX_HALF;
switch (cssr.op_mode) {
case 0: //Link off
link = ETH_LINK_DOWN;
break;
case 1: //10M Half
speed = ETH_SPEED_10M;
duplex = ETH_DUPLEX_HALF;
break;
case 2: //100M Half
speed = ETH_SPEED_100M;
duplex = ETH_DUPLEX_HALF;
break;
case 5: //10M Full
speed = ETH_SPEED_10M;
duplex = ETH_DUPLEX_FULL;
break;
case 6: //100M Full
speed = ETH_SPEED_100M;
duplex = ETH_DUPLEX_FULL;
break;
default:
break;
}
PHY_CHECK(eth->on_state_changed(eth, ETH_STATE_SPEED, (void *)speed) == ESP_OK, "send speed event failed", err);
PHY_CHECK(eth->on_state_changed(eth, ETH_STATE_DUPLEX, (void *)duplex) == ESP_OK, "send duplex event failed", err);
if (ip101->link_status != link) {
PHY_CHECK(eth->on_state_changed(eth, ETH_STATE_LINK, (void *)link) == ESP_OK, "send link event failed", err);
ip101->link_status = link;
}
return ESP_OK;
err:
return ESP_FAIL;
}
static esp_err_t ip101_pwrctl(esp_eth_phy_t *phy, bool enable)
{
phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
esp_eth_mediator_t *eth = ip101->eth;
bmcr_reg_t bmcr;
PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_BMCR_REG_ADDR, &(bmcr.val)) == ESP_OK, "read BMCR failed", err);
if (!enable) {
/* Enable IEEE Power Down Mode */
bmcr.power_down = 1;
} else {
/* Disable IEEE Power Down Mode */
bmcr.power_down = 0;
}
PHY_CHECK(eth->phy_reg_write(eth, ip101->addr, ETH_PHY_BMCR_REG_ADDR, bmcr.val) == ESP_OK, "write BMCR failed", err);
PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_BMCR_REG_ADDR, &(bmcr.val)) == ESP_OK, "read BMCR failed", err);
if (!enable) {
PHY_CHECK(bmcr.power_down == 1, "power down failed", err);
} else {
PHY_CHECK(bmcr.power_down == 0, "power up failed", err);
}
return ESP_OK;
err:
return ESP_FAIL;
}
static esp_err_t ip101_set_addr(esp_eth_phy_t *phy, uint32_t addr)
{
phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
ip101->addr = addr;
return ESP_OK;
}
static esp_err_t ip101_get_addr(esp_eth_phy_t *phy, uint32_t *addr)
{
PHY_CHECK(addr, "get phy address failed", err);
phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
*addr = ip101->addr;
return ESP_OK;
err:
return ESP_ERR_INVALID_ARG;
}
static esp_err_t ip101_del(esp_eth_phy_t *phy)
{
phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
free(ip101);
return ESP_OK;
}
static esp_err_t ip101_init(esp_eth_phy_t *phy)
{
phy_ip101_t *ip101 = __containerof(phy, phy_ip101_t, parent);
esp_eth_mediator_t *eth = ip101->eth;
/* Power on Ethernet PHY */
PHY_CHECK(ip101_pwrctl(phy, true) == ESP_OK, "power on Ethernet PHY failed", err);
/* Reset Ethernet PHY */
PHY_CHECK(ip101_reset(phy) == ESP_OK, "reset Ethernet PHY failed", err);
/* Check PHY ID */
phyidr1_reg_t id1;
phyidr2_reg_t id2;
PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_IDR1_REG_ADDR, &(id1.val)) == ESP_OK, "read ID1 failed", err);
PHY_CHECK(eth->phy_reg_read(eth, ip101->addr, ETH_PHY_IDR2_REG_ADDR, &(id2.val)) == ESP_OK, "read ID2 failed", err);
PHY_CHECK(id1.oui_msb == 0x243 && id2.oui_lsb == 0x3 && id2.vendor_model == 0x5, "wrong PHY chip ID", err);
return ESP_OK;
err:
return ESP_FAIL;
}
static esp_err_t ip101_deinit(esp_eth_phy_t *phy)
{
/* Power off Ethernet PHY */
PHY_CHECK(ip101_pwrctl(phy, false) == ESP_OK, "power off Ethernet PHY failed", err);
return ESP_OK;
err:
return ESP_FAIL;
}
esp_eth_phy_t *esp_eth_phy_new_ip101(const eth_phy_config_t *config)
{
PHY_CHECK(config, "can't set phy config to null", err);
phy_ip101_t *ip101 = calloc(1, sizeof(phy_ip101_t));
PHY_CHECK(ip101, "calloc ip101 object failed", err);
ip101->name = "ip101";
ip101->addr = config->phy_addr;
ip101->reset_timeout_ms = config->reset_timeout_ms;
ip101->link_status = ETH_LINK_DOWN;
ip101->autonego_timeout_ms = config->autonego_timeout_ms;
ip101->parent.reset = ip101_reset;
ip101->parent.init = ip101_init;
ip101->parent.deinit = ip101_deinit;
ip101->parent.set_mediator = ip101_set_mediator;
ip101->parent.negotiate = ip101_negotiate;
ip101->parent.get_link = ip101_get_link;
ip101->parent.pwrctl = ip101_pwrctl;
ip101->parent.get_addr = ip101_get_addr;
ip101->parent.set_addr = ip101_set_addr;
ip101->parent.del = ip101_del;
return &(ip101->parent);
err:
return NULL;
}