zara
/
zephyr
mirror of https://github.com/zephyrproject-rtos/zephyr
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
118645 Commits
81 Branches
203 Tags
1.7 GiB
 
 
 
 
 
 
Branch: main
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'main'
${ noResults }
zephyr/drivers/ethernet/eth_lan9250.c

719 lines
22 KiB
Raw Permalink Blame History

/* LAN9250 Stand-alone Ethernet Controller with SPI
*
* Copyright (c) 2024 Mario Paja
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT microchip_lan9250
#include <zephyr/kernel.h>
#include <zephyr/device.h>
#include <string.h>
#include <errno.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/drivers/spi.h>
#include <zephyr/net/net_pkt.h>
#include <zephyr/net/net_if.h>
#include <zephyr/net/ethernet.h>
#include <ethernet/eth_stats.h>
#include "eth_lan9250_priv.h"
LOG_MODULE_REGISTER(eth_lan9250, CONFIG_ETHERNET_LOG_LEVEL);
static int lan9250_write_sys_reg(const struct device *dev, uint16_t address, uint32_t data)
{
const struct lan9250_config *config = dev->config;
uint8_t cmd[1] = {LAN9250_SPI_INSTR_WRITE};
uint8_t addr[2];
uint8_t instr[4];
struct spi_buf tx_buf[3];
const struct spi_buf_set tx = {.buffers = tx_buf, .count = 3};
sys_put_be16(address, addr);
sys_put_le32(data, instr);
tx_buf[0].buf = &cmd;
tx_buf[0].len = ARRAY_SIZE(cmd);
tx_buf[1].buf = addr;
tx_buf[1].len = ARRAY_SIZE(addr);
tx_buf[2].buf = instr;
tx_buf[2].len = ARRAY_SIZE(instr);
return spi_write_dt(&config->spi, &tx);
}
static int lan9250_read_sys_reg(const struct device *dev, uint16_t address, uint32_t *value)
{
const struct lan9250_config *config = dev->config;
uint8_t cmd[1] = {LAN9250_SPI_INSTR_READ};
uint8_t addr[2];
struct spi_buf tx_buf[3];
struct spi_buf rx_buf[3];
const struct spi_buf_set tx = {.buffers = tx_buf, .count = 3};
const struct spi_buf_set rx = {.buffers = rx_buf, .count = 3};
sys_put_be16(address, addr);
tx_buf[0].buf = &cmd;
tx_buf[0].len = ARRAY_SIZE(cmd);
tx_buf[1].buf = addr;
tx_buf[1].len = ARRAY_SIZE(addr);
tx_buf[2].buf = NULL;
tx_buf[2].len = sizeof(uint32_t);
rx_buf[0].buf = NULL;
rx_buf[0].len = 1;
rx_buf[1].buf = NULL;
rx_buf[1].len = 2;
rx_buf[2].buf = value;
rx_buf[2].len = sizeof(uint32_t);
return spi_transceive_dt(&config->spi, &tx, &rx);
}
static int lan9250_wait_ready(const struct device *dev, uint16_t address, uint32_t mask,
uint32_t expected, uint32_t m_second)
{
uint32_t tmp;
int wait_time = 0;
while (true) {
lan9250_read_sys_reg(dev, address, &tmp);
wait_time++;
k_busy_wait(USEC_PER_MSEC * 1U);
if ((tmp & mask) == expected) {
return 0;
} else if (wait_time == m_second) {
LOG_ERR("NOT READY");
return -EIO;
}
}
}
static int lan9250_read_mac_reg(const struct device *dev, uint8_t address, uint32_t *value)
{
uint32_t tmp;
/* Wait for MAC to be ready and send writing register command and data */
lan9250_wait_ready(dev, LAN9250_MAC_CSR_CMD, LAN9250_MAC_CSR_CMD_BUSY, 0,
LAN9250_MAC_TIMEOUT);
lan9250_write_sys_reg(dev, LAN9250_MAC_CSR_CMD,
address | LAN9250_MAC_CSR_CMD_BUSY | LAN9250_MAC_CSR_CMD_READ);
/* Wait for MAC to be ready and send writing register command and data */
lan9250_wait_ready(dev, LAN9250_MAC_CSR_CMD, LAN9250_MAC_CSR_CMD_BUSY, 0,
LAN9250_MAC_TIMEOUT);
lan9250_read_sys_reg(dev, LAN9250_MAC_CSR_DATA, &tmp);
*value = tmp;
return 0;
}
static int lan9250_write_mac_reg(const struct device *dev, uint8_t address, uint32_t data)
{
/* Wait for MAC to be ready and send writing register command and data */
lan9250_wait_ready(dev, LAN9250_MAC_CSR_CMD, LAN9250_MAC_CSR_CMD_BUSY, 0,
LAN9250_MAC_TIMEOUT);
lan9250_write_sys_reg(dev, LAN9250_MAC_CSR_DATA, data);
lan9250_write_sys_reg(dev, LAN9250_MAC_CSR_CMD, address | LAN9250_MAC_CSR_CMD_BUSY);
/* Wait until writing MAC is done */
lan9250_wait_ready(dev, LAN9250_MAC_CSR_CMD, LAN9250_MAC_CSR_CMD_BUSY, 0,
LAN9250_MAC_TIMEOUT);
return 0;
}
static int lan9250_wait_mac_ready(const struct device *dev, uint8_t address, uint32_t mask,
uint32_t expected, uint32_t m_second)
{
uint32_t tmp;
int wait_time = 0;
while (true) {
lan9250_read_mac_reg(dev, address, &tmp);
wait_time++;
k_msleep(1);
if ((tmp & mask) == expected) {
return 0;
} else if (wait_time == m_second) {
return -EIO;
}
}
}
static int lan9250_read_phy_reg(const struct device *dev, uint8_t address, uint16_t *value)
{
uint32_t tmp;
/* Wait PHY to be ready and send reading register command */
lan9250_wait_mac_ready(dev, LAN9250_HMAC_MII_ACC, LAN9250_HMAC_MII_ACC_MIIBZY, 0,
LAN9250_PHY_TIMEOUT);
/* Reference: Microchip Ethernet LAN9250
* https://github.com/microchip-pic-avr-solutions/ethernet-lan9250/
*
* Datasheet:
* https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/00001913A.pdf
*
* 12.2.18 PHY REGISTERS
* The PHY registers are indirectly accessed through the Host MAC MII Access Register
* (HMAC_MII_ACC) and Host MAC MII Data Register (HMAC_MII_DATA).
*
* Write 32bit value to the indirect MAC registers
* Where phy_add = 0b00001 & index = address
* Data = ((phy_add & 0x1F) << 11) | ((index & 0x1F) << 6)
*/
lan9250_write_mac_reg(dev, LAN9250_HMAC_MII_ACC, (1 << 11) | ((address & 0x1F) << 6));
/* Wait PHY to be ready and send reading register command */
lan9250_wait_mac_ready(dev, LAN9250_HMAC_MII_ACC, LAN9250_HMAC_MII_ACC_MIIBZY, 0,
LAN9250_PHY_TIMEOUT);
/* Read 32bit value from the indirect MAC registers */
lan9250_read_mac_reg(dev, LAN9250_HMAC_MII_DATA, &tmp);
*value = tmp;
return 0;
}
static int lan9250_write_phy_reg(const struct device *dev, uint8_t address, uint16_t data)
{
/* Wait PHY to be ready and send reading register command */
lan9250_wait_mac_ready(dev, LAN9250_HMAC_MII_ACC, LAN9250_HMAC_MII_ACC_MIIBZY, 0,
LAN9250_PHY_TIMEOUT);
lan9250_write_mac_reg(dev, LAN9250_HMAC_MII_DATA, data);
/* Reference: Microchip Ethernet LAN9250
* https://github.com/microchip-pic-avr-solutions/ethernet-lan9250/
*
* Datasheet:
* https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/00001913A.pdf
*
* 12.2.18 PHY REGISTERS
* The PHY registers are indirectly accessed through the Host MAC MII Access Register
* (HMAC_MII_ACC) and Host MAC MII Data Register (HMAC_MII_DATA).
*
* Write 32bit value to the indirect MAC registers
* Where phy_add = 0b00001 & index = address
* Data = ((phy_add & 0x1F) << 11) | ((index & 0x1F)<< 6) | MIIWnR
*/
lan9250_write_mac_reg(dev, LAN9250_HMAC_MII_ACC,
(1 << 11) | ((address & 0x1F) << 6) | LAN9250_HMAC_MII_ACC_MIIW_R);
/* Wait PHY to be ready and send reading register command */
lan9250_wait_mac_ready(dev, LAN9250_HMAC_MII_ACC, LAN9250_HMAC_MII_ACC_MIIBZY, 0,
LAN9250_PHY_TIMEOUT);
return 0;
}
static int lan9250_set_macaddr(const struct device *dev)
{
struct lan9250_runtime *ctx = dev->data;
lan9250_write_mac_reg(dev, LAN9250_HMAC_ADDRL,
ctx->mac_address[0] | (ctx->mac_address[1] << 8) |
(ctx->mac_address[2] << 16) | (ctx->mac_address[3] << 24));
lan9250_write_mac_reg(dev, LAN9250_HMAC_ADDRH,
ctx->mac_address[4] | (ctx->mac_address[5] << 8));
return 0;
}
static int lan9250_hw_cfg_check(const struct device *dev)
{
uint32_t tmp;
do {
lan9250_read_sys_reg(dev, LAN9250_HW_CFG, &tmp);
k_busy_wait(USEC_PER_MSEC * 1U);
} while ((tmp & LAN9250_HW_CFG_DEVICE_READY) == 0);
return 0;
}
static int lan9250_sw_reset(const struct device *dev)
{
lan9250_write_sys_reg(dev, LAN9250_RESET_CTL,
LAN9250_RESET_CTL_HMAC_RST | LAN9250_RESET_CTL_PHY_RST |
LAN9250_RESET_CTL_DIGITAL_RST);
/* Wait until LAN9250 SPI bus is ready */
lan9250_wait_ready(dev, LAN9250_BYTE_TEST, BOTR_MASK, LAN9250_BYTE_TEST_DEFAULT,
LAN9250_RESET_TIMEOUT);
return 0;
}
static int lan9250_configure(const struct device *dev)
{
uint32_t tmp;
lan9250_hw_cfg_check(dev);
/* Read LAN9250 hardware ID */
lan9250_read_sys_reg(dev, LAN9250_ID_REV, &tmp);
if ((tmp & LAN9250_ID_REV_CHIP_ID) != LAN9250_ID_REV_CHIP_ID_DEFAULT) {
LOG_ERR("ERROR: Bad Rev ID: %08x\n", tmp);
return -ENODEV;
}
/* Configure TX FIFO size mode to be 8:
*
* - TX data FIFO size: 7680
* - RX data FIFO size: 7680
* - TX status FIFO size: 512
* - RX status FIFO size: 512
*/
lan9250_write_sys_reg(dev, LAN9250_HW_CFG,
LAN9250_HW_CFG_MBO | LAN9250_HW_CFG_TX_FIF_SZ_8KB);
/* Configure MAC automatic flow control:
*
* Reference: Microchip Ethernet LAN9250
* https://github.com/microchip-pic-avr-solutions/ethernet-lan9250/
* LAN_Regwrite32(AFC_CFG, 0x006E3741);
*
*/
lan9250_write_sys_reg(dev, LAN9250_AFC_CFG, 0x006e3741);
/* Configure interrupt:
*
* - Interrupt De-assertion interval: 100
* - Interrupt output to pin
* - Interrupt pin active output low
* - Interrupt pin push-pull driver
*/
lan9250_write_sys_reg(dev, LAN9250_IRQ_CFG,
LAN9250_IRQ_CFG_INT_DEAS_100US | LAN9250_IRQ_CFG_IRQ_EN |
LAN9250_IRQ_CFG_IRQ_TYPE_PP);
/* Configure interrupt trigger source, please refer to macro
* LAN9250_INT_SOURCE.
*/
lan9250_write_sys_reg(dev, LAN9250_INT_EN,
LAN9250_INT_EN_PHY_INT_EN | LAN9250_INT_EN_RSFL_EN);
/* Disable TX data FIFO available interrupt */
lan9250_write_sys_reg(dev, LAN9250_FIFO_INT,
LAN9250_FIFO_INT_TX_DATA_AVAILABLE_LEVEL |
LAN9250_FIFO_INT_TX_STATUS_LEVEL);
/* Configure RX:
*
* - RX DMA counter: Ethernet maximum packet size
* - RX data offset: 4, so that need read dummy before reading data
*/
lan9250_write_sys_reg(dev, LAN9250_RX_CFG, 0x06000000 | 0x00000400);
/* Configure remote power management:
*
* - Auto wakeup
* - Disable 1588 clock
* - Disable 1588 timestamp unit clock
* - Energy-detect
* - Wake on
* - Clear wakeon
*/
lan9250_write_sys_reg(dev, LAN9250_PMT_CTRL,
LAN9250_PMT_CTRL_PM_WAKE | LAN9250_PMT_CTRL_1588_DIS |
LAN9250_PMT_CTRL_1588_TSU_DIS | LAN9250_PMT_CTRL_WOL_EN |
LAN9250_PMT_CTRL_WOL_STS);
/* Configure PHY basic control:
*
* - Auto-Negotiation for 10/100 Mbits and Half/Full Duplex
*/
lan9250_write_phy_reg(dev, LAN9250_PHY_BASIC_CONTROL,
LAN9250_PHY_BASIC_CONTROL_PHY_AN |
LAN9250_PHY_BASIC_CONTROL_PHY_SPEED_SEL_LSB |
LAN9250_PHY_BASIC_CONTROL_PHY_DUPLEX);
/* Configure PHY auto-negotiation advertisement capability:
*
* - Asymmetric pause
* - Symmetric pause
* - 100Base-X half/full duplex
* - 10Base-X half/full duplex
* - Select IEEE802.3
*/
lan9250_write_phy_reg(dev, LAN9250_PHY_AN_ADV,
LAN9250_PHY_AN_ADV_ASYM_PAUSE | LAN9250_PHY_AN_ADV_SYM_PAUSE |
LAN9250_PHY_AN_ADV_100BTX_HD | LAN9250_PHY_AN_ADV_100BTX_FD |
LAN9250_PHY_AN_ADV_10BT_HD | LAN9250_PHY_AN_ADV_10BT_FD |
LAN9250_PHY_AN_ADV_SELECTOR_DEFAULT);
/* Configure PHY special mode:
*
* - PHY mode = 111b, enable all capable and auto-nagotiation
* - PHY address = 1, default value is fixed to 1 by manufacturer
*/
lan9250_write_phy_reg(dev, LAN9250_PHY_SPECIAL_MODES, 0x00E0 | 1);
/* Configure PHY special control or status indication:
*
* - Port auto-MDIX determined by bits 14 and 13
* - Auto-MDIX
* - Disable SQE tests
*/
lan9250_write_phy_reg(dev, LAN9250_PHY_SPECIAL_CONTROL_STAT_IND,
LAN9250_PHY_SPECIAL_CONTROL_STAT_IND_AMDIXCTRL |
LAN9250_PHY_SPECIAL_CONTROL_STAT_IND_AMDIXEN |
LAN9250_PHY_SPECIAL_CONTROL_STAT_IND_SQEOFF);
/* Configure PHY interrupt source:
*
* - Link up
* - Link down
*/
lan9250_write_phy_reg(dev, LAN9250_PHY_INTERRUPT_MASK,
LAN9250_PHY_INTERRUPT_SOURCE_LINK_UP |
LAN9250_PHY_INTERRUPT_SOURCE_LINK_DOWN);
/* Configure special control or status:
*
* - Fixed to write 0000010b to reserved filed
*/
lan9250_write_phy_reg(dev, LAN9250_PHY_SPECIAL_CONTROL_STATUS,
LAN9250_PHY_MODE_CONTROL_STATUS_ALTINT);
/* Clear interrupt status */
lan9250_write_sys_reg(dev, LAN9250_INT_STS, 0xFFFFFFFF);
/* Configure HMAC control:
*
* - Automatically strip the pad field on incoming packets
* - TX enable
* - RX enable
* - Full duplex
* - Promiscuous disabled
*/
lan9250_write_mac_reg(dev, LAN9250_HMAC_CR,
LAN9250_HMAC_CR_PADSTR | LAN9250_HMAC_CR_TXEN | LAN9250_HMAC_CR_RXEN |
LAN9250_HMAC_CR_FDPX);
/* Configure TX:
*
* - TX enable
*/
lan9250_write_sys_reg(dev, LAN9250_TX_CFG, LAN9250_TX_CFG_TX_ON);
return 0;
}
static int lan9250_write_buf(const struct device *dev, uint8_t *data_buffer, uint16_t buf_len)
{
const struct lan9250_config *config = dev->config;
uint8_t cmd[1] = {LAN9250_SPI_INSTR_WRITE};
uint8_t instr[2] = {(LAN9250_TX_DATA_FIFO >> 8) & 0xFF, (LAN9250_TX_DATA_FIFO & 0xFF)};
struct spi_buf tx_buf[3];
const struct spi_buf_set tx = {.buffers = tx_buf, .count = 3};
tx_buf[0].buf = &cmd;
tx_buf[0].len = ARRAY_SIZE(cmd);
tx_buf[1].buf = &instr;
tx_buf[1].len = ARRAY_SIZE(instr);
tx_buf[2].buf = data_buffer;
tx_buf[2].len = buf_len;
return spi_transceive_dt(&config->spi, &tx, NULL);
}
static int lan9250_read_buf(const struct device *dev, uint8_t *data_buffer, uint16_t buf_len)
{
const struct lan9250_config *config = dev->config;
uint8_t cmd[1] = {LAN9250_SPI_INSTR_READ};
uint8_t instr[2] = {(LAN9250_RX_DATA_FIFO >> 8) & 0xFF, (LAN9250_RX_DATA_FIFO & 0xFF)};
struct spi_buf tx_buf[3];
struct spi_buf rx_buf[3];
const struct spi_buf_set tx = {.buffers = tx_buf, .count = 3};
const struct spi_buf_set rx = {.buffers = rx_buf, .count = 3};
tx_buf[0].buf = &cmd;
tx_buf[0].len = ARRAY_SIZE(cmd);
tx_buf[1].buf = &instr;
tx_buf[1].len = ARRAY_SIZE(instr);
tx_buf[2].buf = NULL;
tx_buf[2].len = buf_len;
rx_buf[0].buf = NULL;
rx_buf[0].len = 1;
rx_buf[1].buf = NULL;
rx_buf[1].len = 2;
rx_buf[2].buf = data_buffer;
rx_buf[2].len = buf_len;
return spi_transceive_dt(&config->spi, &tx, &rx);
}
static int lan9250_rx(const struct device *dev)
{
const struct lan9250_config *config = dev->config;
struct lan9250_runtime *ctx = dev->data;
const uint16_t buf_rx_size = CONFIG_NET_BUF_DATA_SIZE;
struct net_pkt *pkt;
struct net_buf *pkt_buf;
uint16_t pkt_len;
uint8_t pktcnt;
uint32_t tmp;
/* Check valid packet count */
lan9250_read_sys_reg(dev, LAN9250_RX_FIFO_INF, &tmp);
pktcnt = (tmp & 0x00ff0000) >> 16;
/* Check packet length */
lan9250_read_sys_reg(dev, LAN9250_RX_STATUS_FIFO, &tmp);
pkt_len = (tmp & LAN9250_RX_STS_PACKET_LEN) >> 16;
if (pktcnt == 0 || pkt_len == 0) {
return 0;
}
/* Read dummy data */
lan9250_read_sys_reg(dev, LAN9250_RX_DATA_FIFO, &tmp);
pkt_len -= 4;
if (pkt_len > NET_ETH_MAX_FRAME_SIZE) {
LOG_ERR("Maximum frame length exceeded, it should be: %d", NET_ETH_MAX_FRAME_SIZE);
eth_stats_update_errors_rx(ctx->iface);
}
/* Get the frame from the buffer */
pkt = net_pkt_rx_alloc_with_buffer(ctx->iface, pkt_len, AF_UNSPEC, 0,
K_MSEC(config->timeout));
if (!pkt) {
LOG_ERR("%s: Could not allocate rx buffer", dev->name);
eth_stats_update_errors_rx(ctx->iface);
return 0;
}
pkt_buf = pkt->buffer;
do {
uint8_t *data_ptr = pkt_buf->data;
uint16_t data_len;
if (pkt_len > buf_rx_size) {
data_len = buf_rx_size;
} else {
data_len = pkt_len;
}
pkt_len -= data_len;
lan9250_read_buf(dev, data_ptr, data_len);
net_buf_add(pkt_buf, data_len);
pkt_buf = pkt_buf->frags;
} while (pkt_len > 0);
lan9250_read_sys_reg(dev, LAN9250_RX_DATA_FIFO, &tmp);
net_pkt_set_iface(pkt, ctx->iface);
/* Feed buffer frame to IP stack */
if (net_recv_data(net_pkt_iface(pkt), pkt) < 0) {
net_pkt_unref(pkt);
}
k_sem_give(&ctx->tx_rx_sem);
return 0;
}
static int lan9250_tx(const struct device *dev, struct net_pkt *pkt)
{
struct lan9250_runtime *ctx = dev->data;
size_t len = net_pkt_get_len(pkt);
uint32_t regval;
uint16_t free_size;
uint8_t status_size;
uint32_t tmp;
lan9250_read_sys_reg(dev, LAN9250_TX_FIFO_INF, &regval);
status_size = (regval & LAN9250_TX_FIFO_INF_TXSUSED) >> 16;
free_size = regval & LAN9250_TX_FIFO_INF_TXFREE;
k_sem_take(&ctx->tx_rx_sem, K_FOREVER);
/* TX command 'A' */
lan9250_write_sys_reg(dev, LAN9250_TX_DATA_FIFO,
LAN9250_TX_CMD_A_INT_ON_COMP | LAN9250_TX_CMD_A_BUFFER_ALIGN_4B |
LAN9250_TX_CMD_A_START_OFFSET_0B |
LAN9250_TX_CMD_A_FIRST_SEG | LAN9250_TX_CMD_A_LAST_SEG | len);
/* TX command 'B' */
lan9250_write_sys_reg(dev, LAN9250_TX_DATA_FIFO, LAN9250_TX_CMD_B_PACKET_TAG | len);
if (net_pkt_read(pkt, ctx->buf, len)) {
return -EIO;
}
lan9250_write_buf(dev, ctx->buf, LAN9250_ALIGN(len));
for (int i = 0; i < status_size; i++) {
lan9250_read_sys_reg(dev, LAN9250_TX_STATUS_FIFO, &tmp);
}
k_sem_give(&ctx->tx_rx_sem);
return 0;
}
static void lan9250_gpio_callback(const struct device *dev, struct gpio_callback *cb, uint32_t pins)
{
struct lan9250_runtime *context = CONTAINER_OF(cb, struct lan9250_runtime, gpio_cb);
k_sem_give(&context->int_sem);
}
static void lan9250_thread(void *p1, void *p2, void *p3)
{
ARG_UNUSED(p2);
ARG_UNUSED(p3);
struct lan9250_runtime *context = p1;
uint32_t int_sts;
uint16_t tmp;
uint32_t ier;
while (true) {
k_sem_take(&context->int_sem, K_FOREVER);
/* Save interrupt enable register value */
lan9250_read_sys_reg(context->dev, LAN9250_INT_EN, &ier);
/* Disable interrupts to release the interrupt line */
lan9250_write_sys_reg(context->dev, LAN9250_INT_EN, 0);
/* Read interrupt status register */
lan9250_read_sys_reg(context->dev, LAN9250_INT_STS, &int_sts);
if ((int_sts & LAN9250_INT_STS_PHY_INT) != 0) {
/* Read PHY interrupt source register */
lan9250_read_phy_reg(context->dev, LAN9250_PHY_INTERRUPT_SOURCE, &tmp);
if (tmp & LAN9250_PHY_INTERRUPT_SOURCE_LINK_UP) {
LOG_DBG("LINK UP");
net_eth_carrier_on(context->iface);
} else if (tmp & LAN9250_PHY_INTERRUPT_SOURCE_LINK_DOWN) {
LOG_DBG("LINK DOWN");
net_eth_carrier_off(context->iface);
}
}
if ((int_sts & LAN9250_INT_STS_RSFL) != 0) {
lan9250_write_sys_reg(context->dev, LAN9250_INT_STS, LAN9250_INT_STS_RSFL);
lan9250_rx(context->dev);
}
/* Re-enable interrupts */
lan9250_write_sys_reg(context->dev, LAN9250_INT_EN, ier);
}
}
static enum ethernet_hw_caps lan9250_get_capabilities(const struct device *dev)
{
ARG_UNUSED(dev);
return ETHERNET_LINK_10BASE | ETHERNET_LINK_100BASE;
}
static void lan9250_iface_init(struct net_if *iface)
{
const struct device *dev = net_if_get_device(iface);
struct lan9250_runtime *context = dev->data;
net_if_set_link_addr(iface, context->mac_address, sizeof(context->mac_address),
NET_LINK_ETHERNET);
context->iface = iface;
ethernet_init(iface);
net_if_carrier_off(iface);
}
static int lan9250_set_config(const struct device *dev, enum ethernet_config_type type,
const struct ethernet_config *config)
{
struct lan9250_runtime *ctx = dev->data;
if (type == ETHERNET_CONFIG_TYPE_MAC_ADDRESS) {
memcpy(ctx->mac_address, config->mac_address.addr, sizeof(ctx->mac_address));
lan9250_set_macaddr(dev);
return net_if_set_link_addr(ctx->iface, ctx->mac_address, sizeof(ctx->mac_address),
NET_LINK_ETHERNET);
}
return -ENOTSUP;
}
static const struct ethernet_api api_funcs = {
.iface_api.init = lan9250_iface_init,
.get_capabilities = lan9250_get_capabilities,
.set_config = lan9250_set_config,
.send = lan9250_tx,
};
static int lan9250_init(const struct device *dev)
{
const struct lan9250_config *config = dev->config;
struct lan9250_runtime *context = dev->data;
context->dev = dev;
/* SPI config */
if (!spi_is_ready_dt(&config->spi)) {
LOG_ERR("SPI master port %s not ready", config->spi.bus->name);
return -EINVAL;
}
/* Initialize GPIO */
if (!gpio_is_ready_dt(&config->interrupt)) {
LOG_ERR("GPIO port %s not ready", config->interrupt.port->name);
return -EINVAL;
}
if (gpio_pin_configure_dt(&config->interrupt, GPIO_INPUT)) {
LOG_ERR("Unable to configure GPIO pin %u", config->interrupt.pin);
return -EINVAL;
}
gpio_init_callback(&(context->gpio_cb), lan9250_gpio_callback, BIT(config->interrupt.pin));
if (gpio_add_callback(config->interrupt.port, &(context->gpio_cb))) {
return -EINVAL;
}
gpio_pin_interrupt_configure_dt(&config->interrupt, GPIO_INT_EDGE_TO_ACTIVE);
/* Wait until LAN9250 SPI bus is ready */
lan9250_wait_ready(dev, LAN9250_BYTE_TEST, BOTR_MASK, LAN9250_BYTE_TEST_DEFAULT,
LAN9250_RESET_TIMEOUT);
lan9250_sw_reset(dev);
lan9250_configure(dev);
lan9250_set_macaddr(dev);
k_thread_create(&context->thread, context->thread_stack,
CONFIG_ETH_LAN9250_RX_THREAD_STACK_SIZE, lan9250_thread, context, NULL,
NULL, K_PRIO_COOP(CONFIG_ETH_LAN9250_RX_THREAD_PRIO), 0, K_NO_WAIT);
LOG_INF("LAN9250 Initialized");
return 0;
}
#define LAN9250_DEFINE(inst) \
static struct lan9250_runtime lan9250_##inst##_runtime = { \
.mac_address = DT_INST_PROP_OR(inst, local_mac_address, {0}), \
.tx_rx_sem = Z_SEM_INITIALIZER(lan9250_##inst##_runtime.tx_rx_sem, 1, UINT_MAX), \
.int_sem = Z_SEM_INITIALIZER(lan9250_##inst##_runtime.int_sem, 0, UINT_MAX), \
}; \
\
static const struct lan9250_config lan9250_##inst##_config = { \
.spi = SPI_DT_SPEC_INST_GET(inst, SPI_WORD_SET(8), 0), \
.interrupt = GPIO_DT_SPEC_INST_GET(inst, int_gpios), \
.timeout = CONFIG_ETH_LAN9250_BUF_ALLOC_TIMEOUT, \
}; \
\
ETH_NET_DEVICE_DT_INST_DEFINE(inst, lan9250_init, NULL, &lan9250_##inst##_runtime, \
&lan9250_##inst##_config, CONFIG_ETH_INIT_PRIORITY, \
&api_funcs, NET_ETH_MTU);
DT_INST_FOREACH_STATUS_OKAY(LAN9250_DEFINE);