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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2014 Broadcom Corporation.
*/
#include <common.h>
#include <malloc.h>
#include <net.h>
#include <config.h>
#include <phy.h>
#include <miiphy.h>
#include <asm/io.h>
#include <netdev.h>
#include "bcm-sf2-eth.h"
#if defined(CONFIG_BCM_SF2_ETH_GMAC)
#include "bcm-sf2-eth-gmac.h"
#else
#error "bcm_sf2_eth: NEED to define a MAC!"
#endif
#define BCM_NET_MODULE_DESCRIPTION "Broadcom Starfighter2 Ethernet driver"
#define BCM_NET_MODULE_VERSION "0.1"
#define BCM_SF2_ETH_DEV_NAME "bcm_sf2"
static const char banner[] =
BCM_NET_MODULE_DESCRIPTION " " BCM_NET_MODULE_VERSION "\n";
static int bcm_sf2_eth_init(struct eth_device *dev)
{
struct eth_info *eth = (struct eth_info *)(dev->priv);
struct eth_dma *dma = &(eth->dma);
struct phy_device *phydev;
int rc = 0;
int i;
rc = eth->mac_init(dev);
if (rc) {
pr_err("%s: Couldn't cofigure MAC!\n", __func__);
return rc;
}
/* disable DMA */
dma->disable_dma(dma, MAC_DMA_RX);
dma->disable_dma(dma, MAC_DMA_TX);
eth->port_num = 0;
debug("Connecting PHY 0...\n");
phydev = phy_connect(miiphy_get_dev_by_name(dev->name),
0, dev, eth->phy_interface);
if (phydev != NULL) {
eth->port[0] = phydev;
eth->port_num += 1;
} else {
debug("No PHY found for port 0\n");
}
for (i = 0; i < eth->port_num; i++)
phy_config(eth->port[i]);
return rc;
}
/*
* u-boot net functions
*/
static int bcm_sf2_eth_send(struct eth_device *dev, void *packet, int length)
{
struct eth_dma *dma = &(((struct eth_info *)(dev->priv))->dma);
uint8_t *buf = (uint8_t *)packet;
int rc = 0;
int i = 0;
debug("%s enter\n", __func__);
/* load buf and start transmit */
rc = dma->tx_packet(dma, buf, length);
if (rc) {
debug("ERROR - Tx failed\n");
return rc;
}
while (!(dma->check_tx_done(dma))) {
udelay(100);
debug(".");
i++;
if (i > 20) {
pr_err("%s: Tx timeout: retried 20 times\n", __func__);
rc = -1;
break;
}
}
debug("%s exit rc(0x%x)\n", __func__, rc);
return rc;
}
static int bcm_sf2_eth_receive(struct eth_device *dev)
{
struct eth_dma *dma = &(((struct eth_info *)(dev->priv))->dma);
uint8_t *buf = (uint8_t *)net_rx_packets[0];
int rcvlen;
int rc = 0;
int i = 0;
while (1) {
/* Poll Rx queue to get a packet */
rcvlen = dma->check_rx_done(dma, buf);
if (rcvlen < 0) {
/* No packet received */
rc = -1;
debug("\nNO More Rx\n");
break;
} else if ((rcvlen == 0) || (rcvlen > RX_BUF_SIZE)) {
pr_err("%s: Wrong Ethernet packet size (%d B), skip!\n",
__func__, rcvlen);
break;
} else {
debug("recieved\n");
/* Forward received packet to uboot network handler */
net_process_received_packet(buf, rcvlen);
if (++i >= PKTBUFSRX)
i = 0;
buf = net_rx_packets[i];
}
}
return rc;
}
static int bcm_sf2_eth_write_hwaddr(struct eth_device *dev)
{
struct eth_info *eth = (struct eth_info *)(dev->priv);
printf(" ETH MAC: %02x:%02x:%02x:%02x:%02x:%02x\n",
dev->enetaddr[0], dev->enetaddr[1], dev->enetaddr[2],
dev->enetaddr[3], dev->enetaddr[4], dev->enetaddr[5]);
return eth->set_mac_addr(dev->enetaddr);
}
static int bcm_sf2_eth_open(struct eth_device *dev, bd_t *bt)
{
struct eth_info *eth = (struct eth_info *)(dev->priv);
struct eth_dma *dma = &(eth->dma);
int i;
debug("Enabling BCM SF2 Ethernet.\n");
eth->enable_mac();
/* enable tx and rx DMA */
dma->enable_dma(dma, MAC_DMA_RX);
dma->enable_dma(dma, MAC_DMA_TX);
/*
* Need to start PHY here because link speed can change
* before each ethernet operation
*/
for (i = 0; i < eth->port_num; i++) {
if (phy_startup(eth->port[i])) {
pr_err("%s: PHY %d startup failed!\n", __func__, i);
if (i == CONFIG_BCM_SF2_ETH_DEFAULT_PORT) {
pr_err("%s: No default port %d!\n", __func__, i);
return -1;
}
}
}
/* Set MAC speed using default port */
i = CONFIG_BCM_SF2_ETH_DEFAULT_PORT;
debug("PHY %d: speed:%d, duplex:%d, link:%d\n", i,
eth->port[i]->speed, eth->port[i]->duplex, eth->port[i]->link);
eth->set_mac_speed(eth->port[i]->speed, eth->port[i]->duplex);
debug("Enable Ethernet Done.\n");
return 0;
}
static void bcm_sf2_eth_close(struct eth_device *dev)
{
struct eth_info *eth = (struct eth_info *)(dev->priv);
struct eth_dma *dma = &(eth->dma);
/* disable DMA */
dma->disable_dma(dma, MAC_DMA_RX);
dma->disable_dma(dma, MAC_DMA_TX);
eth->disable_mac();
}
int bcm_sf2_eth_register(bd_t *bis, u8 dev_num)
{
struct eth_device *dev;
struct eth_info *eth;
int rc;
dev = (struct eth_device *)malloc(sizeof(struct eth_device));
if (dev == NULL) {
pr_err("%s: Not enough memory!\n", __func__);
return -1;
}
eth = (struct eth_info *)malloc(sizeof(struct eth_info));
if (eth == NULL) {
pr_err("%s: Not enough memory!\n", __func__);
return -1;
}
printf(banner);
memset(dev, 0, sizeof(*dev));
sprintf(dev->name, "%s_%s-%hu", BCM_SF2_ETH_DEV_NAME,
BCM_SF2_ETH_MAC_NAME, dev_num);
dev->priv = (void *)eth;
dev->iobase = 0;
dev->init = bcm_sf2_eth_open;
dev->halt = bcm_sf2_eth_close;
dev->send = bcm_sf2_eth_send;
dev->recv = bcm_sf2_eth_receive;
dev->write_hwaddr = bcm_sf2_eth_write_hwaddr;
#ifdef CONFIG_BCM_SF2_ETH_GMAC
if (gmac_add(dev)) {
free(eth);
free(dev);
pr_err("%s: Adding GMAC failed!\n", __func__);
return -1;
}
#else
#error "bcm_sf2_eth: NEED to register a MAC!"
#endif
eth_register(dev);
#ifdef CONFIG_CMD_MII
int retval;
struct mii_dev *mdiodev = mdio_alloc();
if (!mdiodev)
return -ENOMEM;
strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
mdiodev->read = eth->miiphy_read;
mdiodev->write = eth->miiphy_write;
retval = mdio_register(mdiodev);
if (retval < 0)
return retval;
#endif
/* Initialization */
debug("Ethernet initialization ...");
rc = bcm_sf2_eth_init(dev);
if (rc != 0) {
pr_err("%s: configuration failed!\n", __func__);
return -1;
}
printf("Basic ethernet functionality initialized\n");
return 0;
}
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