mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-02 09:30:10 +00:00
275 lines
6.4 KiB
C
275 lines
6.4 KiB
C
/*
|
|
* SMSC LAN9[12]1[567] Network driver
|
|
*
|
|
* (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <malloc.h>
|
|
#include <net.h>
|
|
#include <miiphy.h>
|
|
|
|
#include "smc911x.h"
|
|
|
|
u32 pkt_data_pull(struct eth_device *dev, u32 addr) \
|
|
__attribute__ ((weak, alias ("smc911x_reg_read")));
|
|
void pkt_data_push(struct eth_device *dev, u32 addr, u32 val) \
|
|
__attribute__ ((weak, alias ("smc911x_reg_write")));
|
|
|
|
#define mdelay(n) udelay((n)*1000)
|
|
|
|
static void smx911x_handle_mac_address(struct eth_device *dev)
|
|
{
|
|
unsigned long addrh, addrl;
|
|
uchar *m = dev->enetaddr;
|
|
|
|
addrl = m[0] | (m[1] << 8) | (m[2] << 16) | (m[3] << 24);
|
|
addrh = m[4] | (m[5] << 8);
|
|
smc911x_set_mac_csr(dev, ADDRL, addrl);
|
|
smc911x_set_mac_csr(dev, ADDRH, addrh);
|
|
|
|
printf(DRIVERNAME ": MAC %pM\n", m);
|
|
}
|
|
|
|
static int smc911x_miiphy_read(struct eth_device *dev,
|
|
u8 phy, u8 reg, u16 *val)
|
|
{
|
|
while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
|
|
;
|
|
|
|
smc911x_set_mac_csr(dev, MII_ACC, phy << 11 | reg << 6 |
|
|
MII_ACC_MII_BUSY);
|
|
|
|
while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
|
|
;
|
|
|
|
*val = smc911x_get_mac_csr(dev, MII_DATA);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int smc911x_miiphy_write(struct eth_device *dev,
|
|
u8 phy, u8 reg, u16 val)
|
|
{
|
|
while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
|
|
;
|
|
|
|
smc911x_set_mac_csr(dev, MII_DATA, val);
|
|
smc911x_set_mac_csr(dev, MII_ACC,
|
|
phy << 11 | reg << 6 | MII_ACC_MII_BUSY | MII_ACC_MII_WRITE);
|
|
|
|
while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
|
|
;
|
|
return 0;
|
|
}
|
|
|
|
static int smc911x_phy_reset(struct eth_device *dev)
|
|
{
|
|
u32 reg;
|
|
|
|
reg = smc911x_reg_read(dev, PMT_CTRL);
|
|
reg &= ~0xfffff030;
|
|
reg |= PMT_CTRL_PHY_RST;
|
|
smc911x_reg_write(dev, PMT_CTRL, reg);
|
|
|
|
mdelay(100);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void smc911x_phy_configure(struct eth_device *dev)
|
|
{
|
|
int timeout;
|
|
u16 status;
|
|
|
|
smc911x_phy_reset(dev);
|
|
|
|
smc911x_miiphy_write(dev, 1, PHY_BMCR, PHY_BMCR_RESET);
|
|
mdelay(1);
|
|
smc911x_miiphy_write(dev, 1, PHY_ANAR, 0x01e1);
|
|
smc911x_miiphy_write(dev, 1, PHY_BMCR, PHY_BMCR_AUTON |
|
|
PHY_BMCR_RST_NEG);
|
|
|
|
timeout = 5000;
|
|
do {
|
|
mdelay(1);
|
|
if ((timeout--) == 0)
|
|
goto err_out;
|
|
|
|
if (smc911x_miiphy_read(dev, 1, PHY_BMSR, &status) != 0)
|
|
goto err_out;
|
|
} while (!(status & PHY_BMSR_LS));
|
|
|
|
printf(DRIVERNAME ": phy initialized\n");
|
|
|
|
return;
|
|
|
|
err_out:
|
|
printf(DRIVERNAME ": autonegotiation timed out\n");
|
|
}
|
|
|
|
static void smc911x_enable(struct eth_device *dev)
|
|
{
|
|
/* Enable TX */
|
|
smc911x_reg_write(dev, HW_CFG, 8 << 16 | HW_CFG_SF);
|
|
|
|
smc911x_reg_write(dev, GPT_CFG, GPT_CFG_TIMER_EN | 10000);
|
|
|
|
smc911x_reg_write(dev, TX_CFG, TX_CFG_TX_ON);
|
|
|
|
/* no padding to start of packets */
|
|
smc911x_reg_write(dev, RX_CFG, 0);
|
|
|
|
smc911x_set_mac_csr(dev, MAC_CR, MAC_CR_TXEN | MAC_CR_RXEN |
|
|
MAC_CR_HBDIS);
|
|
|
|
}
|
|
|
|
static int smc911x_init(struct eth_device *dev, bd_t * bd)
|
|
{
|
|
struct chip_id *id = dev->priv;
|
|
|
|
printf(DRIVERNAME ": detected %s controller\n", id->name);
|
|
|
|
smc911x_reset(dev);
|
|
|
|
/* Configure the PHY, initialize the link state */
|
|
smc911x_phy_configure(dev);
|
|
|
|
smx911x_handle_mac_address(dev);
|
|
|
|
/* Turn on Tx + Rx */
|
|
smc911x_enable(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int smc911x_send(struct eth_device *dev,
|
|
volatile void *packet, int length)
|
|
{
|
|
u32 *data = (u32*)packet;
|
|
u32 tmplen;
|
|
u32 status;
|
|
|
|
smc911x_reg_write(dev, TX_DATA_FIFO, TX_CMD_A_INT_FIRST_SEG |
|
|
TX_CMD_A_INT_LAST_SEG | length);
|
|
smc911x_reg_write(dev, TX_DATA_FIFO, length);
|
|
|
|
tmplen = (length + 3) / 4;
|
|
|
|
while (tmplen--)
|
|
pkt_data_push(dev, TX_DATA_FIFO, *data++);
|
|
|
|
/* wait for transmission */
|
|
while (!((smc911x_reg_read(dev, TX_FIFO_INF) &
|
|
TX_FIFO_INF_TSUSED) >> 16));
|
|
|
|
/* get status. Ignore 'no carrier' error, it has no meaning for
|
|
* full duplex operation
|
|
*/
|
|
status = smc911x_reg_read(dev, TX_STATUS_FIFO) &
|
|
(TX_STS_LOC | TX_STS_LATE_COLL | TX_STS_MANY_COLL |
|
|
TX_STS_MANY_DEFER | TX_STS_UNDERRUN);
|
|
|
|
if (!status)
|
|
return 0;
|
|
|
|
printf(DRIVERNAME ": failed to send packet: %s%s%s%s%s\n",
|
|
status & TX_STS_LOC ? "TX_STS_LOC " : "",
|
|
status & TX_STS_LATE_COLL ? "TX_STS_LATE_COLL " : "",
|
|
status & TX_STS_MANY_COLL ? "TX_STS_MANY_COLL " : "",
|
|
status & TX_STS_MANY_DEFER ? "TX_STS_MANY_DEFER " : "",
|
|
status & TX_STS_UNDERRUN ? "TX_STS_UNDERRUN" : "");
|
|
|
|
return -1;
|
|
}
|
|
|
|
static void smc911x_halt(struct eth_device *dev)
|
|
{
|
|
smc911x_reset(dev);
|
|
}
|
|
|
|
static int smc911x_rx(struct eth_device *dev)
|
|
{
|
|
u32 *data = (u32 *)NetRxPackets[0];
|
|
u32 pktlen, tmplen;
|
|
u32 status;
|
|
|
|
if ((smc911x_reg_read(dev, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED) >> 16) {
|
|
status = smc911x_reg_read(dev, RX_STATUS_FIFO);
|
|
pktlen = (status & RX_STS_PKT_LEN) >> 16;
|
|
|
|
smc911x_reg_write(dev, RX_CFG, 0);
|
|
|
|
tmplen = (pktlen + 2+ 3) / 4;
|
|
while (tmplen--)
|
|
*data++ = pkt_data_pull(dev, RX_DATA_FIFO);
|
|
|
|
if (status & RX_STS_ES)
|
|
printf(DRIVERNAME
|
|
": dropped bad packet. Status: 0x%08x\n",
|
|
status);
|
|
else
|
|
NetReceive(NetRxPackets[0], pktlen);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int smc911x_initialize(u8 dev_num, int base_addr)
|
|
{
|
|
unsigned long addrl, addrh;
|
|
struct eth_device *dev;
|
|
|
|
dev = malloc(sizeof(*dev));
|
|
if (!dev) {
|
|
free(dev);
|
|
return 0;
|
|
}
|
|
memset(dev, 0, sizeof(*dev));
|
|
|
|
dev->iobase = base_addr;
|
|
|
|
/* Try to detect chip. Will fail if not present. */
|
|
if (smc911x_detect_chip(dev)) {
|
|
free(dev);
|
|
return 0;
|
|
}
|
|
|
|
addrh = smc911x_get_mac_csr(dev, ADDRH);
|
|
addrl = smc911x_get_mac_csr(dev, ADDRL);
|
|
dev->enetaddr[0] = addrl;
|
|
dev->enetaddr[1] = addrl >> 8;
|
|
dev->enetaddr[2] = addrl >> 16;
|
|
dev->enetaddr[3] = addrl >> 24;
|
|
dev->enetaddr[4] = addrh;
|
|
dev->enetaddr[5] = addrh >> 8;
|
|
|
|
dev->init = smc911x_init;
|
|
dev->halt = smc911x_halt;
|
|
dev->send = smc911x_send;
|
|
dev->recv = smc911x_rx;
|
|
sprintf(dev->name, "%s-%hu", DRIVERNAME, dev_num);
|
|
|
|
eth_register(dev);
|
|
return 0;
|
|
}
|