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#include <common.h>
#include <driver.h>
#include <init.h>
#include <mii_phy.h>
int miiphy_restart_aneg(struct miiphy_device *mdev)
{
uint16_t status;
int timeout;
/*
* Reset PHY, then delay 300ns
*/
mdev->write(mdev, mdev->address, PHY_BMCR, PHY_BMCR_RESET);
udelay(1000);
if (mdev->flags & MIIPHY_FORCE_10) {
printf("Forcing 10 Mbps ethernet link... ");
mdev->read(mdev, mdev->address, PHY_BMSR, &status);
mdev->write(mdev, mdev->address, PHY_BMCR, PHY_BMCR_DPLX | PHY_BMCR_COL_TST);
timeout = 20;
do { /* wait for link status to go down */
udelay(10000);
if ((timeout--) == 0) {
#if (DEBUG & 0x2)
printf("hmmm, should not have waited...");
#endif
break;
}
mdev->read(mdev, mdev->address, PHY_BMSR, &status);
} while (status & PHY_BMSR_LS);
} else { /* MII100 */
/*
* Set the auto-negotiation advertisement register bits
*/
mdev->write(mdev, mdev->address, PHY_ANAR, 0x01e1);
mdev->write(mdev, mdev->address, PHY_BMCR, PHY_BMCR_AUTON | PHY_BMCR_RST_NEG);
}
return 0;
}
int miiphy_wait_aneg(struct miiphy_device *mdev)
{
int timeout = 1;
uint16_t status;
/*
* Wait for AN completion
*/
timeout = 5000;
do {
udelay(1000);
if (!timeout--) {
printf("%s: Autonegotiation timeout\n", mdev->dev.id);
return -1;
}
if (mdev->read(mdev, mdev->address, PHY_BMSR, &status)) {
printf("%s: Autonegotiation failed. status: 0x%04x\n", mdev->dev.id, status);
return -1;
}
} while (!(status & PHY_BMSR_LS));
return 0;
}
int miiphy_print_status(struct miiphy_device *mdev)
{
uint16_t bmsr, bmcr, anlpar;
char *duplex;
int speed;
if (mdev->read(mdev, mdev->address, PHY_BMSR, &bmsr) != 0)
goto err_out;
if (mdev->read(mdev, mdev->address, PHY_BMCR, &bmcr) != 0)
goto err_out;
if (mdev->read(mdev, mdev->address, PHY_ANLPAR, &anlpar) != 0)
goto err_out;
printf("%s: Link is %s", mdev->dev.id,
bmsr & PHY_BMSR_LS ? "up" : "down");
if (bmcr & PHY_BMCR_AUTON) {
duplex = (PHY_ANLPAR_10FD | PHY_ANLPAR_TXFD) ? "Full" : "Half";
speed = anlpar & PHY_ANLPAR_100 ? 100 : 10;
} else {
duplex = bmcr & PHY_BMCR_DPLX ? "Full" : "Half";
speed = bmcr & PHY_BMCR_100MB ? 100 : 10;
}
printf(" - %d/%s\n", speed, duplex);
return 0;
err_out:
printf("%s: failed to read\n", mdev->dev.id);
return -1;
}
ssize_t miiphy_read(struct device_d *dev, void *_buf, size_t count, ulong offset, ulong flags)
{
int i = count;
uint16_t *buf = _buf;
struct miiphy_device *mdev = dev->priv;
while (i > 1) {
mdev->read(mdev, mdev->address, offset, buf);
buf++;
i -= 2;
offset++;
}
return count;
}
ssize_t miiphy_write(struct device_d *dev, const void *_buf, size_t count, ulong offset, ulong flags)
{
int i = count;
const uint16_t *buf = _buf;
struct miiphy_device *mdev = dev->priv;
while (i > 1) {
mdev->write(mdev, mdev->address, offset, *buf);
buf++;
i -= 2;
offset++;
}
return count;
}
static int miiphy_probe(struct device_d *dev)
{
return 0;
}
int miiphy_register(struct miiphy_device *mdev)
{
strcpy(mdev->dev.name, "miiphy");
get_free_deviceid(mdev->dev.id, "phy");
mdev->dev.type = DEVICE_TYPE_MIIPHY;
mdev->dev.priv = mdev;
mdev->dev.size = 32;
return register_device(&mdev->dev);
}
static struct driver_d miiphy_drv = {
.name = "miiphy",
.probe = miiphy_probe,
.read = miiphy_read,
.write = miiphy_write,
.type = DEVICE_TYPE_MIIPHY,
};
static int miiphy_init(void)
{
register_driver(&miiphy_drv);
return 0;
}
device_initcall(miiphy_init);
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