u-boot/drivers/net/bcm-sf2-eth.c
Joe Hershberger f566c9949f net: Update hardware MAC address if it changes in env
When the ethaddr changes in the env, the hardware should also be updated
so that MAC filtering will work properly without resetting U-Boot.

Also remove the manual calls to set the hwaddr that was included in a
few drivers as a result of the framework not doing it.

Reported-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Tested-by: Michal Simek <michal.simek@xilinx.com>
2015-05-19 13:33:21 -05:00

262 lines
5.6 KiB
C

/*
* Copyright 2014 Broadcom Corporation.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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) {
error("%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) {
error("%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)) {
error("%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])) {
error("%s: PHY %d startup failed!\n", __func__, i);
if (i == CONFIG_BCM_SF2_ETH_DEFAULT_PORT) {
error("%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) {
error("%s: Not enough memory!\n", __func__);
return -1;
}
eth = (struct eth_info *)malloc(sizeof(struct eth_info));
if (eth == NULL) {
error("%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);
error("%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
miiphy_register(dev->name, eth->miiphy_read, eth->miiphy_write);
#endif
/* Initialization */
debug("Ethernet initialization ...");
rc = bcm_sf2_eth_init(dev);
if (rc != 0) {
error("%s: configuration failed!\n", __func__);
return -1;
}
printf("Basic ethernet functionality initialized\n");
return 0;
}