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authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2010-08-26 18:33:28 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2010-08-27 14:36:03 +0200
commit12f396a8b02e57f579d2863299948b5172ffdf6f (patch)
treedd354d4cf966925422d20f5796a134d148d39693 /drivers/net/miiphy.c
parentf2283c2057b28d81b9060ba3fde68f24f2eb2922 (diff)
downloadbarebox-12f396a8b02e57f579d2863299948b5172ffdf6f.tar.gz
barebox-12f396a8b02e57f579d2863299948b5172ffdf6f.tar.xz
net: rework the mii support
this rework is done in order to add a phylib and allow to have phy driver support Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/net/miiphy.c')
-rw-r--r--drivers/net/miiphy.c224
1 files changed, 0 insertions, 224 deletions
diff --git a/drivers/net/miiphy.c b/drivers/net/miiphy.c
deleted file mode 100644
index 12aa7a632c..0000000000
--- a/drivers/net/miiphy.c
+++ /dev/null
@@ -1,224 +0,0 @@
-/*
- * miiphy.c - generic phy abstraction
- *
- * Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
- *
- * 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 version 2
- * as published by the Free Software Foundation.
- *
- * 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 <driver.h>
-#include <init.h>
-#include <miiphy.h>
-#include <clock.h>
-#include <net.h>
-#include <malloc.h>
-
-int miiphy_restart_aneg(struct miiphy_device *mdev)
-{
- uint16_t status;
- int timeout;
-
- /*
- * Reset PHY, then delay 300ns
- */
- mdev->write(mdev, mdev->address, MII_BMCR, BMCR_RESET);
-
- if (mdev->flags & MIIPHY_FORCE_LINK)
- return 0;
-
- udelay(1000);
-
- if (mdev->flags & MIIPHY_FORCE_10) {
- printf("Forcing 10 Mbps ethernet link... ");
- mdev->read(mdev, mdev->address, MII_BMSR, &status);
- mdev->write(mdev, mdev->address, MII_BMCR, BMCR_FULLDPLX | BMCR_CTST);
-
- timeout = 20;
- do { /* wait for link status to go down */
- udelay(10000);
- if ((timeout--) == 0) {
- debug("hmmm, should not have waited...");
- break;
- }
- mdev->read(mdev, mdev->address, MII_BMSR, &status);
- } while (status & BMSR_LSTATUS);
-
- } else { /* MII100 */
- /*
- * Set the auto-negotiation advertisement register bits
- */
- mdev->read(mdev, mdev->address, MII_ADVERTISE, &status);
- status |= ADVERTISE_ALL;
- mdev->write(mdev, mdev->address, MII_ADVERTISE, status);
-
- mdev->write(mdev, mdev->address, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
- }
-
- return 0;
-}
-
-int miiphy_wait_aneg(struct miiphy_device *mdev)
-{
- uint64_t start;
- uint16_t status;
-
- if (mdev->flags & MIIPHY_FORCE_LINK)
- return 0;
-
- /*
- * Wait for AN completion
- */
- start = get_time_ns();
- do {
- if (is_timeout(start, 5 * SECOND)) {
- printf("%s: Autonegotiation timeout\n", mdev->cdev.name);
- return -1;
- }
-
- if (mdev->read(mdev, mdev->address, MII_BMSR, &status)) {
- printf("%s: Autonegotiation failed. status: 0x%04x\n", mdev->cdev.name, status);
- return -1;
- }
- } while (!(status & BMSR_LSTATUS));
-
- return 0;
-}
-
-int miiphy_print_status(struct miiphy_device *mdev)
-{
- uint16_t bmsr, bmcr, lpa;
- char *duplex;
- int speed;
-
- if (mdev->flags & MIIPHY_FORCE_LINK) {
- printf("Forcing link present...\n");
- return 0;
- }
-
- if (mdev->read(mdev, mdev->address, MII_BMSR, &bmsr) != 0)
- goto err_out;
- if (mdev->read(mdev, mdev->address, MII_BMCR, &bmcr) != 0)
- goto err_out;
- if (mdev->read(mdev, mdev->address, MII_LPA, &lpa) != 0)
- goto err_out;
-
- printf("%s: Link is %s", mdev->cdev.name,
- bmsr & BMSR_LSTATUS ? "up" : "down");
-
- if (bmcr & BMCR_ANENABLE) {
- duplex = lpa & LPA_DUPLEX ? "Full" : "Half";
- speed = lpa & LPA_100 ? 100 : 10;
- } else {
- duplex = bmcr & BMCR_FULLDPLX ? "Full" : "Half";
- speed = bmcr & BMCR_SPEED100 ? 100 : 10;
- }
-
- printf(" - %d/%s\n", speed, duplex);
-
- return 0;
-err_out:
- printf("%s: failed to read\n", mdev->cdev.name);
- return -1;
-}
-
-static ssize_t miiphy_read(struct cdev *cdev, void *_buf, size_t count, ulong offset, ulong flags)
-{
- int i = count;
- uint16_t *buf = _buf;
- struct miiphy_device *mdev = cdev->priv;
-
- while (i > 1) {
- mdev->read(mdev, mdev->address, offset, buf);
- buf++;
- i -= 2;
- offset++;
- }
-
- return count;
-}
-
-static ssize_t miiphy_write(struct cdev *cdev, const void *_buf, size_t count, ulong offset, ulong flags)
-{
- int i = count;
- const uint16_t *buf = _buf;
- struct miiphy_device *mdev = cdev->priv;
-
- while (i > 1) {
- mdev->write(mdev, mdev->address, offset, *buf);
- buf++;
- i -= 2;
- offset++;
- }
-
- return count;
-}
-
-static struct file_operations miiphy_ops = {
- .read = miiphy_read,
- .write = miiphy_write,
- .lseek = dev_lseek_default,
-};
-
-static int miiphy_probe(struct device_d *dev)
-{
- struct miiphy_device *mdev = dev->priv;
-
- mdev->cdev.name = asprintf("phy%d", dev->id);
- mdev->cdev.size = 32;
- mdev->cdev.ops = &miiphy_ops;
- mdev->cdev.priv = mdev;
- mdev->cdev.dev = dev;
- devfs_create(&mdev->cdev);
- return 0;
-}
-
-static void miiphy_remove(struct device_d *dev)
-{
- struct miiphy_device *mdev = dev->priv;
-
- free(mdev->cdev.name);
- devfs_remove(&mdev->cdev);
-}
-
-static struct driver_d miiphy_drv = {
- .name = "miiphy",
- .probe = miiphy_probe,
- .remove = miiphy_remove,
-};
-
-int miiphy_register(struct miiphy_device *mdev)
-{
- mdev->dev.priv = mdev;
- strcpy(mdev->dev.name, "miiphy");
-
- return register_device(&mdev->dev);
-}
-
-void miiphy_unregister(struct miiphy_device *mdev)
-{
- unregister_device(&mdev->dev);
-}
-
-static int miiphy_init(void)
-{
- register_driver(&miiphy_drv);
- return 0;
-}
-
-device_initcall(miiphy_init);
-