OrgZephyr/zephyr
OrgZephyr
/
zephyr
mirror of https://github.com/zephyrproject-rtos/zephyr.git
1
0
Fork 0
Code Issues Releases Wiki Activity
zephyr/drivers/ethernet/eth_enc28j60.c

731 lines
20 KiB
C
Raw Blame History

/* ENC28J60 Stand-alone Ethernet Controller with SPI
*
* Copyright (c) 2016 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#define SYS_LOG_LEVEL CONFIG_SYS_LOG_ETHERNET_LEVEL
#define SYS_LOG_DOMAIN "dev/enc28j60"
#include <logging/sys_log.h>
#include <zephyr.h>
#include <device.h>
#include <string.h>
#include <errno.h>
#include <gpio.h>
#include <spi.h>
#include <net/net_pkt.h>
#include <net/net_if.h>
#include <net/ethernet.h>
#include "eth_enc28j60_priv.h"
#define D10D24S 11
static void enc28j60_thread_main(void *arg1, void *unused1, void *unused2);
static int eth_enc28j60_soft_reset(struct device *dev)
{
struct eth_enc28j60_runtime *context = dev->driver_data;
u8_t tx_buf[2] = {ENC28J60_SPI_SC, 0xFF};
return spi_write(context->spi, tx_buf, 2);
}
static void eth_enc28j60_set_bank(struct device *dev, u16_t reg_addr)
{
struct eth_enc28j60_runtime *context = dev->driver_data;
u8_t tx_buf[2];
k_sem_take(&context->spi_sem, K_FOREVER);
tx_buf[0] = ENC28J60_SPI_RCR | ENC28J60_REG_ECON1;
tx_buf[1] = 0x0;
if (!spi_transceive(context->spi, tx_buf, 2, tx_buf, 2)) {
tx_buf[0] = ENC28J60_SPI_WCR | ENC28J60_REG_ECON1;
tx_buf[1] = (tx_buf[1] & 0xFC) | ((reg_addr >> 8) & 0x0F);
spi_write(context->spi, tx_buf, 2);
} else {
SYS_LOG_DBG("Failure while setting bank to %d", reg_addr);
}
k_sem_give(&context->spi_sem);
}
static void eth_enc28j60_write_reg(struct device *dev, u16_t reg_addr,
u8_t value)
{
struct eth_enc28j60_runtime *context = dev->driver_data;
u8_t tx_buf[2];
k_sem_take(&context->spi_sem, K_FOREVER);
tx_buf[0] = ENC28J60_SPI_WCR | (reg_addr & 0xFF);
tx_buf[1] = value;
spi_write(context->spi, tx_buf, 2);
k_sem_give(&context->spi_sem);
}
static void eth_enc28j60_read_reg(struct device *dev, u16_t reg_addr,
u8_t *value)
{
struct eth_enc28j60_runtime *context = dev->driver_data;
u8_t tx_size = 2;
u8_t tx_buf[3];
k_sem_take(&context->spi_sem, K_FOREVER);
if (reg_addr & 0xF000) {
tx_size = 3;
}
tx_buf[0] = ENC28J60_SPI_RCR | (reg_addr & 0xFF);
tx_buf[1] = 0x0;
if (!spi_transceive(context->spi, tx_buf, tx_size, tx_buf, tx_size)) {
*value = tx_buf[tx_size - 1];
} else {
SYS_LOG_DBG("Failure while reading register %d", reg_addr);
*value = 0;
}
k_sem_give(&context->spi_sem);
}
static void eth_enc28j60_set_eth_reg(struct device *dev, u16_t reg_addr,
u8_t value)
{
struct eth_enc28j60_runtime *context = dev->driver_data;
u8_t tx_buf[2];
k_sem_take(&context->spi_sem, K_FOREVER);
tx_buf[0] = ENC28J60_SPI_BFS | (reg_addr & 0xFF);
tx_buf[1] = value;
spi_write(context->spi, tx_buf, 2);
k_sem_give(&context->spi_sem);
}
static void eth_enc28j60_clear_eth_reg(struct device *dev, u16_t reg_addr,
u8_t value)
{
struct eth_enc28j60_runtime *context = dev->driver_data;
u8_t tx_buf[2];
k_sem_take(&context->spi_sem, K_FOREVER);
tx_buf[0] = ENC28J60_SPI_BFC | (reg_addr & 0xFF);
tx_buf[1] = value;
spi_write(context->spi, tx_buf, 2);
k_sem_give(&context->spi_sem);
}
static void eth_enc28j60_write_mem(struct device *dev, u8_t *data_buffer,
u16_t buf_len)
{
struct eth_enc28j60_runtime *context = dev->driver_data;
u8_t *index_buf;
u16_t num_segments;
u16_t num_remaining;
index_buf = data_buffer;
num_segments = buf_len / MAX_BUFFER_LENGTH;
num_remaining = buf_len - MAX_BUFFER_LENGTH * num_segments;
k_sem_take(&context->spi_sem, K_FOREVER);
for (int i = 0; i < num_segments;
++i, index_buf += MAX_BUFFER_LENGTH) {
context->mem_buf[0] = ENC28J60_SPI_WBM;
memcpy(context->mem_buf + 1, index_buf, MAX_BUFFER_LENGTH);
spi_write(context->spi,
context->mem_buf, MAX_BUFFER_LENGTH + 1);
}
if (num_remaining > 0) {
context->mem_buf[0] = ENC28J60_SPI_WBM;
memcpy(context->mem_buf + 1, index_buf, num_remaining);
spi_write(context->spi, context->mem_buf, num_remaining + 1);
}
k_sem_give(&context->spi_sem);
}
static void eth_enc28j60_read_mem(struct device *dev, u8_t *data_buffer,
u16_t buf_len)
{
struct eth_enc28j60_runtime *context = dev->driver_data;
u16_t num_segments;
u16_t num_remaining;
num_segments = buf_len / MAX_BUFFER_LENGTH;
num_remaining = buf_len - MAX_BUFFER_LENGTH * num_segments;
k_sem_take(&context->spi_sem, K_FOREVER);
for (int i = 0; i < num_segments;
++i, data_buffer += MAX_BUFFER_LENGTH) {
context->mem_buf[0] = ENC28J60_SPI_RBM;
if (!spi_transceive(context->spi,
context->mem_buf, MAX_BUFFER_LENGTH + 1,
context->mem_buf, MAX_BUFFER_LENGTH + 1)) {
if (data_buffer) {
memcpy(data_buffer, context->mem_buf + 1,
MAX_BUFFER_LENGTH);
}
} else {
SYS_LOG_DBG("Failed to read memory");
}
}
if (num_remaining > 0) {
context->mem_buf[0] = ENC28J60_SPI_RBM;
if (!spi_transceive(context->spi,
context->mem_buf, num_remaining + 1,
context->mem_buf, num_remaining + 1)) {
if (data_buffer) {
memcpy(data_buffer, context->mem_buf + 1,
num_remaining);
}
} else {
SYS_LOG_DBG("Failed to read memory");
}
}
k_sem_give(&context->spi_sem);
}
static void eth_enc28j60_write_phy(struct device *dev, u16_t reg_addr,
s16_t data)
{
u8_t data_mistat;
eth_enc28j60_set_bank(dev, ENC28J60_REG_MIREGADR);
eth_enc28j60_write_reg(dev, ENC28J60_REG_MIREGADR, reg_addr);
eth_enc28j60_write_reg(dev, ENC28J60_REG_MIWRL, data & 0xFF);
eth_enc28j60_write_reg(dev, ENC28J60_REG_MIWRH, data >> 8);
eth_enc28j60_set_bank(dev, ENC28J60_REG_MISTAT);
do {
/* wait 10.24 useconds */
k_busy_wait(D10D24S);
eth_enc28j60_read_reg(dev, ENC28J60_REG_MISTAT,
&data_mistat);
} while ((data_mistat & ENC28J60_BIT_MISTAT_BUSY));
}
static void eth_enc28j60_gpio_callback(struct device *dev,
struct gpio_callback *cb,
u32_t pins)
{
struct eth_enc28j60_runtime *context =
CONTAINER_OF(cb, struct eth_enc28j60_runtime, gpio_cb);
k_sem_give(&context->int_sem);
}
static void eth_enc28j60_init_buffers(struct device *dev)
{
u8_t data_estat;
/* Reception buffers initialization */
eth_enc28j60_set_bank(dev, ENC28J60_REG_ERXSTL);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ERXSTL,
ENC28J60_RXSTART & 0xFF);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ERXSTH,
ENC28J60_RXSTART >> 8);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ERXRDPTL,
ENC28J60_RXSTART & 0xFF);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ERXRDPTH,
ENC28J60_RXSTART >> 8);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ERXNDL,
ENC28J60_RXEND & 0xFF);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ERXNDH,
ENC28J60_RXEND >> 8);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ETXSTL,
ENC28J60_TXSTART & 0xFF);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ETXSTH,
ENC28J60_TXSTART >> 8);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ETXNDL,
ENC28J60_TXEND & 0xFF);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ETXNDH,
ENC28J60_TXEND >> 8);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ERDPTL,
ENC28J60_RXSTART & 0xFF);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ERDPTH,
ENC28J60_RXSTART >> 8);
eth_enc28j60_write_reg(dev, ENC28J60_REG_EWRPTL,
ENC28J60_TXSTART & 0xFF);
eth_enc28j60_write_reg(dev, ENC28J60_REG_EWRPTH,
ENC28J60_TXSTART >> 8);
eth_enc28j60_set_bank(dev, ENC28J60_REG_ERXFCON);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ERXFCON,
ENC28J60_RECEIVE_FILTERS);
/* Waiting for OST */
do {
/* wait 10.24 useconds */
k_busy_wait(D10D24S);
eth_enc28j60_read_reg(dev, ENC28J60_REG_ESTAT, &data_estat);
} while (!(data_estat & ENC28J60_BIT_ESTAT_CLKRDY));
}
static void eth_enc28j60_init_mac(struct device *dev)
{
const struct eth_enc28j60_config *config = dev->config->config_info;
u8_t data_macon;
eth_enc28j60_set_bank(dev, ENC28J60_REG_MACON1);
/* Set MARXEN to enable MAC to receive frames */
eth_enc28j60_read_reg(dev, ENC28J60_REG_MACON1, &data_macon);
data_macon |= ENC28J60_BIT_MACON1_MARXEN | ENC28J60_BIT_MACON1_RXPAUS
| ENC28J60_BIT_MACON1_TXPAUS;
eth_enc28j60_write_reg(dev, ENC28J60_REG_MACON1, data_macon);
data_macon = ENC28J60_MAC_CONFIG;
if (config->full_duplex) {
data_macon |= ENC28J60_BIT_MACON3_FULDPX;
}
eth_enc28j60_write_reg(dev, ENC28J60_REG_MACON3, data_macon);
eth_enc28j60_write_reg(dev, ENC28J60_REG_MAIPGL, ENC28J60_MAC_NBBIPGL);
if (config->full_duplex) {
eth_enc28j60_write_reg(dev, ENC28J60_REG_MAIPGH,
ENC28J60_MAC_NBBIPGH);
eth_enc28j60_write_reg(dev, ENC28J60_REG_MABBIPG,
ENC28J60_MAC_BBIPG_FD);
} else {
eth_enc28j60_write_reg(dev, ENC28J60_REG_MABBIPG,
ENC28J60_MAC_BBIPG_HD);
eth_enc28j60_write_reg(dev, ENC28J60_REG_MACON4, 1 << 6);
}
/* Configure MAC address */
eth_enc28j60_set_bank(dev, ENC28J60_REG_MAADR0);
eth_enc28j60_write_reg(dev, ENC28J60_REG_MAADR0,
CONFIG_ETH_ENC28J60_0_MAC5);
eth_enc28j60_write_reg(dev, ENC28J60_REG_MAADR1,
CONFIG_ETH_ENC28J60_0_MAC4);
eth_enc28j60_write_reg(dev, ENC28J60_REG_MAADR2,
CONFIG_ETH_ENC28J60_0_MAC3);
eth_enc28j60_write_reg(dev, ENC28J60_REG_MAADR3, MICROCHIP_OUI_B2);
eth_enc28j60_write_reg(dev, ENC28J60_REG_MAADR4, MICROCHIP_OUI_B1);
eth_enc28j60_write_reg(dev, ENC28J60_REG_MAADR5, MICROCHIP_OUI_B0);
}
static void eth_enc28j60_init_phy(struct device *dev)
{
const struct eth_enc28j60_config *config = dev->config->config_info;
if (config->full_duplex) {
eth_enc28j60_write_phy(dev, ENC28J60_PHY_PHCON1,
ENC28J60_BIT_PHCON1_PDPXMD);
eth_enc28j60_write_phy(dev, ENC28J60_PHY_PHCON2, 0x0);
} else {
eth_enc28j60_write_phy(dev, ENC28J60_PHY_PHCON1, 0x0);
eth_enc28j60_write_phy(dev, ENC28J60_PHY_PHCON2,
ENC28J60_BIT_PHCON2_HDLDIS);
}
}
static int eth_enc28j60_init(struct device *dev)
{
const struct eth_enc28j60_config *config = dev->config->config_info;
struct eth_enc28j60_runtime *context = dev->driver_data;
struct spi_config spi_cfg;
k_sem_init(&context->spi_sem, 1, UINT_MAX);
context->gpio = device_get_binding((char *)config->gpio_port);
if (!context->gpio) {
SYS_LOG_ERR("GPIO port %s not found", config->gpio_port);
return -EINVAL;
}
context->spi = device_get_binding((char *)config->spi_port);
if (!context->spi) {
SYS_LOG_ERR("SPI master port %s not found", config->spi_port);
return -EINVAL;
}
/* Initialize GPIO */
if (gpio_pin_configure(context->gpio, config->gpio_pin,
(GPIO_DIR_IN | GPIO_INT | GPIO_INT_EDGE
| GPIO_INT_ACTIVE_LOW | GPIO_INT_DEBOUNCE))) {
SYS_LOG_ERR("Unable to configure GPIO pin %u",
config->gpio_pin);
return -EINVAL;
}
gpio_init_callback(&(context->gpio_cb), eth_enc28j60_gpio_callback,
BIT(config->gpio_pin));
if (gpio_add_callback(context->gpio, &(context->gpio_cb))) {
return -EINVAL;
}
if (gpio_pin_enable_callback(context->gpio, config->gpio_pin)) {
return -EINVAL;
}
/* Initialize SPI:
* Mode: 0/0; Size: 8 bits; MSB
*/
spi_cfg.config = 8 << 4;
spi_cfg.max_sys_freq = config->spi_freq;
if (spi_configure(context->spi, &spi_cfg) < 0) {
SYS_LOG_ERR("Failed to configure SPI");
return -EIO;
}
if (spi_slave_select(context->spi, config->spi_slave) < 0) {
return -EIO;
}
if (eth_enc28j60_soft_reset(dev)) {
SYS_LOG_ERR("Soft-reset failed");
return -EIO;
}
/* Errata B7/2 */
k_busy_wait(D10D24S);
eth_enc28j60_init_buffers(dev);
eth_enc28j60_init_mac(dev);
eth_enc28j60_init_phy(dev);
/* Enable interruptions */
eth_enc28j60_set_eth_reg(dev, ENC28J60_REG_EIE, ENC28J60_BIT_EIE_INTIE);
eth_enc28j60_set_eth_reg(dev, ENC28J60_REG_EIE, ENC28J60_BIT_EIE_PKTIE);
/* Enable Reception */
eth_enc28j60_set_eth_reg(dev, ENC28J60_REG_ECON1,
ENC28J60_BIT_ECON1_RXEN);
/* Initialize semaphores */
k_sem_init(&context->tx_rx_sem, 0, UINT_MAX);
k_sem_init(&context->int_sem, 0, UINT_MAX);
k_sem_give(&context->tx_rx_sem);
/* Start interruption-poll thread */
k_thread_create(&context->thread, context->thread_stack,
CONFIG_ETH_ENC28J60_RX_THREAD_STACK_SIZE,
enc28j60_thread_main, (void *) dev, NULL, NULL,
K_PRIO_COOP(CONFIG_ETH_ENC28J60_RX_THREAD_PRIO),
0, K_NO_WAIT);
SYS_LOG_INF("ENC28J60 Initialized");
return 0;
}
static int eth_enc28j60_tx(struct device *dev, struct net_pkt *pkt,
u16_t len)
{
struct eth_enc28j60_runtime *context = dev->driver_data;
u16_t tx_bufaddr = ENC28J60_TXSTART;
bool first_frag = true;
u8_t per_packet_control;
u16_t tx_bufaddr_end;
struct net_buf *frag;
u8_t tx_end;
k_sem_take(&context->tx_rx_sem, K_FOREVER);
/* Latest errata sheet: DS80349C
* always reset transmit logic (Errata Issue 12)
* the Microchip TCP/IP stack implementation used to first check
* whether TXERIF is set and only then reset the transmit logic
* but this has been changed in later versions; possibly they
* have a reason for this; they don't mention this in the errata
* sheet
*/
eth_enc28j60_set_eth_reg(dev, ENC28J60_REG_ECON1,
ENC28J60_BIT_ECON1_TXRST);
eth_enc28j60_clear_eth_reg(dev, ENC28J60_REG_ECON1,
ENC28J60_BIT_ECON1_TXRST);
/* Write the buffer content into the transmission buffer */
eth_enc28j60_set_bank(dev, ENC28J60_REG_ETXSTL);
eth_enc28j60_write_reg(dev, ENC28J60_REG_EWRPTL, tx_bufaddr & 0xFF);
eth_enc28j60_write_reg(dev, ENC28J60_REG_EWRPTH, tx_bufaddr >> 8);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ETXSTL, tx_bufaddr & 0xFF);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ETXSTH, tx_bufaddr >> 8);
/* Write the data into the buffer */
per_packet_control = ENC28J60_PPCTL_BYTE;
eth_enc28j60_write_mem(dev, &per_packet_control, 1);
for (frag = pkt->frags; frag; frag = frag->frags) {
u8_t *data_ptr;
u16_t data_len;
if (first_frag) {
data_ptr = net_pkt_ll(pkt);
data_len = net_pkt_ll_reserve(pkt) + frag->len;
first_frag = false;
} else {
data_ptr = frag->data;
data_len = frag->len;
}
eth_enc28j60_write_mem(dev, data_ptr, data_len);
}
tx_bufaddr_end = tx_bufaddr + len;
eth_enc28j60_write_reg(dev, ENC28J60_REG_ETXNDL,
tx_bufaddr_end & 0xFF);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ETXNDH, tx_bufaddr_end >> 8);
/* Signal ENC28J60 to send the buffer */
eth_enc28j60_set_eth_reg(dev, ENC28J60_REG_ECON1,
ENC28J60_BIT_ECON1_TXRTS);
do {
/* wait 10.24 useconds */
k_busy_wait(D10D24S);
eth_enc28j60_read_reg(dev, ENC28J60_REG_EIR, &tx_end);
tx_end &= ENC28J60_BIT_EIR_TXIF;
} while (!tx_end);
eth_enc28j60_read_reg(dev, ENC28J60_REG_ESTAT, &tx_end);
k_sem_give(&context->tx_rx_sem);
if (tx_end & ENC28J60_BIT_ESTAT_TXABRT) {
SYS_LOG_ERR("TX failed!");
return -EIO;
}
return 0;
}
static int eth_enc28j60_rx(struct device *dev)
{
const struct eth_enc28j60_config *config = dev->config->config_info;
struct eth_enc28j60_runtime *context = dev->driver_data;
u16_t lengthfr;
u8_t counter;
/* Errata 6. The Receive Packet Pending Interrupt Flag (EIR.PKTIF)
* does not reliably/accurately report the status of pending packet.
* Use EPKTCNT register instead.
*/
SYS_LOG_DBG("");
k_sem_take(&context->tx_rx_sem, K_FOREVER);
do {
struct net_buf *pkt_buf = NULL;
struct net_buf *last_buf = NULL;
u16_t frm_len = 0;
struct net_pkt *pkt;
u16_t next_packet;
u8_t np[2];
/* Read address for next packet */
eth_enc28j60_read_mem(dev, np, 2);
next_packet = np[0] | (u16_t)np[1] << 8;
/* Errata 14. Even values in ERXRDPT
* may corrupt receive buffer.
*/
if (next_packet == 0) {
next_packet = ENC28J60_RXEND;
} else if (!(next_packet & 0x01)) {
next_packet--;
}
/* Read reception status vector */
eth_enc28j60_read_mem(dev, context->rx_rsv, 4);
/* Get the frame length from the rx status vector,
* minus CRC size at the end which is always present
*/
frm_len = (context->rx_rsv[1] << 8) | (context->rx_rsv[0] - 4);
lengthfr = frm_len;
/* Get the frame from the buffer */
pkt = net_pkt_get_reserve_rx(0, config->timeout);
if (!pkt) {
SYS_LOG_ERR("Could not allocate rx buffer");
goto done;
}
do {
size_t frag_len;
u8_t *data_ptr;
size_t spi_frame_len;
/* Reserve a data frag to receive the frame */
pkt_buf = net_pkt_get_frag(pkt, config->timeout);
if (!pkt_buf) {
SYS_LOG_ERR("Could not allocate data buffer");
net_pkt_unref(pkt);
goto done;
}
if (!last_buf) {
net_pkt_frag_insert(pkt, pkt_buf);
} else {
net_buf_frag_insert(last_buf, pkt_buf);
}
last_buf = pkt_buf;
data_ptr = pkt_buf->data;
/* Review the space available for the new frag */
frag_len = net_buf_tailroom(pkt_buf);
if (frm_len > frag_len) {
spi_frame_len = frag_len;
} else {
spi_frame_len = frm_len;
}
eth_enc28j60_read_mem(dev, data_ptr, spi_frame_len);
net_buf_add(pkt_buf, spi_frame_len);
/* One fragment has been written via SPI */
frm_len -= spi_frame_len;
} while (frm_len > 0);
/* Let's pop the useless CRC */
eth_enc28j60_read_mem(dev, NULL, 4);
/* Pops one padding byte from spi circular buffer
* introduced by the device when the frame length is odd
*/
if (lengthfr & 0x01) {
eth_enc28j60_read_mem(dev, NULL, 1);
}
/* Feed buffer frame to IP stack */
SYS_LOG_DBG("Received packet of length %u", lengthfr);
net_recv_data(context->iface, pkt);
done:
/* Free buffer memory and decrement rx counter */
eth_enc28j60_set_bank(dev, ENC28J60_REG_ERXRDPTL);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ERXRDPTL,
next_packet & 0xFF);
eth_enc28j60_write_reg(dev, ENC28J60_REG_ERXRDPTH,
next_packet >> 8);
eth_enc28j60_set_eth_reg(dev, ENC28J60_REG_ECON2,
ENC28J60_BIT_ECON2_PKTDEC);
/* Check if there are frames to clean from the buffer */
eth_enc28j60_set_bank(dev, ENC28J60_REG_EPKTCNT);
eth_enc28j60_read_reg(dev, ENC28J60_REG_EPKTCNT, &counter);
} while (counter);
k_sem_give(&context->tx_rx_sem);
return 0;
}
static void enc28j60_thread_main(void *arg1, void *unused1, void *unused2)
{
struct device *dev = (struct device *) arg1;
struct eth_enc28j60_runtime *context;
u8_t int_stat;
ARG_UNUSED(unused1);
ARG_UNUSED(unused2);
context = dev->driver_data;
while (1) {
k_sem_take(&context->int_sem, K_FOREVER);
eth_enc28j60_read_reg(dev, ENC28J60_REG_EIR, &int_stat);
if (int_stat & ENC28J60_BIT_EIR_PKTIF) {
eth_enc28j60_rx(dev);
/* Clear rx interruption flag */
eth_enc28j60_clear_eth_reg(dev, ENC28J60_REG_EIR,
ENC28J60_BIT_EIR_PKTIF
| ENC28J60_BIT_EIR_RXERIF);
}
}
}
static int eth_net_tx(struct net_if *iface, struct net_pkt *pkt)
{
u16_t len = net_pkt_ll_reserve(pkt) + net_pkt_get_len(pkt);
int ret;
SYS_LOG_DBG("pkt %p (len %u)", pkt, len);
ret = eth_enc28j60_tx(iface->dev, pkt, len);
if (ret == 0) {
net_pkt_unref(pkt);
}
return ret;
}
#ifdef CONFIG_ETH_ENC28J60_0
static u8_t mac_address_0[6] = { MICROCHIP_OUI_B0,
MICROCHIP_OUI_B1,
MICROCHIP_OUI_B2,
CONFIG_ETH_ENC28J60_0_MAC3,
CONFIG_ETH_ENC28J60_0_MAC4,
CONFIG_ETH_ENC28J60_0_MAC5 };
static void eth_enc28j60_iface_init_0(struct net_if *iface)
{
struct device *dev = net_if_get_device(iface);
struct eth_enc28j60_runtime *context = dev->driver_data;
SYS_LOG_DBG("");
net_if_set_link_addr(iface, mac_address_0, sizeof(mac_address_0),
NET_LINK_ETHERNET);
context->iface = iface;
}
static struct net_if_api api_funcs_0 = {
.init = eth_enc28j60_iface_init_0,
.send = eth_net_tx,
};
static struct eth_enc28j60_runtime eth_enc28j60_0_runtime;
static const struct eth_enc28j60_config eth_enc28j60_0_config = {
.gpio_port = CONFIG_ETH_ENC28J60_0_GPIO_PORT_NAME,
.gpio_pin = CONFIG_ETH_ENC28J60_0_GPIO_PIN,
.spi_port = CONFIG_ETH_ENC28J60_0_SPI_PORT_NAME,
.spi_freq = CONFIG_ETH_ENC28J60_0_SPI_BUS_FREQ,
.spi_slave = CONFIG_ETH_ENC28J60_0_SLAVE,
.full_duplex = CONFIG_ETH_EN28J60_0_FULL_DUPLEX,
.timeout = CONFIG_ETH_EN28J60_TIMEOUT,
};
NET_DEVICE_INIT(enc28j60_0, CONFIG_ETH_ENC28J60_0_NAME,
eth_enc28j60_init, &eth_enc28j60_0_runtime,
&eth_enc28j60_0_config, CONFIG_ETH_INIT_PRIORITY, &api_funcs_0,
ETHERNET_L2, NET_L2_GET_CTX_TYPE(ETHERNET_L2), 1500);
#endif /* CONFIG_ETH_ENC28J60_0 */
Reference in New Issue View Git Blame Copy Permalink