u-boot/drivers/net/bcm-sf2-eth.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

272 lines
5.8 KiB
C

// 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;
}