mirror of
https://github.com/smaeul/u-boot.git
synced 2025-10-26 09:38:14 +00:00
26c7bab81e
Current MII_DEBUG is confusing in two ways. One is useless define-then- undef at the top of the file. The other is there is only one debug() in this file, and that doesn't seem worthwhile to bother having MII_DEBUG. While there are many useful printf()/puts() debug codes, but they are for DEBUG, not for MII_DEBUG. This patch tries to put them all together into MII_DEBUG and debug(). Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
491 lines
12 KiB
C
491 lines
12 KiB
C
/*
|
|
* (C) Copyright 2001
|
|
* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com.
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/*
|
|
* This provides a bit-banged interface to the ethernet MII management
|
|
* channel.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <miiphy.h>
|
|
|
|
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
|
|
#include <asm/types.h>
|
|
#include <linux/list.h>
|
|
#include <malloc.h>
|
|
#include <net.h>
|
|
|
|
/* local debug macro */
|
|
#undef MII_DEBUG
|
|
|
|
#undef debug
|
|
#ifdef MII_DEBUG
|
|
#define debug(fmt,args...) printf (fmt ,##args)
|
|
#else
|
|
#define debug(fmt,args...)
|
|
#endif /* MII_DEBUG */
|
|
|
|
struct mii_dev {
|
|
struct list_head link;
|
|
char *name;
|
|
int (*read) (char *devname, unsigned char addr,
|
|
unsigned char reg, unsigned short *value);
|
|
int (*write) (char *devname, unsigned char addr,
|
|
unsigned char reg, unsigned short value);
|
|
};
|
|
|
|
static struct list_head mii_devs;
|
|
static struct mii_dev *current_mii;
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* Initialize global data. Need to be called before any other miiphy routine.
|
|
*/
|
|
void miiphy_init ()
|
|
{
|
|
INIT_LIST_HEAD (&mii_devs);
|
|
current_mii = NULL;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* Register read and write MII access routines for the device <name>.
|
|
*/
|
|
void miiphy_register (char *name,
|
|
int (*read) (char *devname, unsigned char addr,
|
|
unsigned char reg, unsigned short *value),
|
|
int (*write) (char *devname, unsigned char addr,
|
|
unsigned char reg, unsigned short value))
|
|
{
|
|
struct list_head *entry;
|
|
struct mii_dev *new_dev;
|
|
struct mii_dev *miidev;
|
|
unsigned int name_len;
|
|
|
|
/* check if we have unique name */
|
|
list_for_each (entry, &mii_devs) {
|
|
miidev = list_entry (entry, struct mii_dev, link);
|
|
if (strcmp (miidev->name, name) == 0) {
|
|
printf ("miiphy_register: non unique device name "
|
|
"'%s'\n", name);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* allocate memory */
|
|
name_len = strlen (name);
|
|
new_dev =
|
|
(struct mii_dev *)malloc (sizeof (struct mii_dev) + name_len + 1);
|
|
|
|
if (new_dev == NULL) {
|
|
printf ("miiphy_register: cannot allocate memory for '%s'\n",
|
|
name);
|
|
return;
|
|
}
|
|
memset (new_dev, 0, sizeof (struct mii_dev) + name_len);
|
|
|
|
/* initalize mii_dev struct fields */
|
|
INIT_LIST_HEAD (&new_dev->link);
|
|
new_dev->read = read;
|
|
new_dev->write = write;
|
|
new_dev->name = (char *)(new_dev + 1);
|
|
strncpy (new_dev->name, name, name_len);
|
|
new_dev->name[name_len] = '\0';
|
|
|
|
debug ("miiphy_register: added '%s', read=0x%08lx, write=0x%08lx\n",
|
|
new_dev->name, new_dev->read, new_dev->write);
|
|
|
|
/* add it to the list */
|
|
list_add_tail (&new_dev->link, &mii_devs);
|
|
|
|
if (!current_mii)
|
|
current_mii = new_dev;
|
|
}
|
|
|
|
int miiphy_set_current_dev (char *devname)
|
|
{
|
|
struct list_head *entry;
|
|
struct mii_dev *dev;
|
|
|
|
list_for_each (entry, &mii_devs) {
|
|
dev = list_entry (entry, struct mii_dev, link);
|
|
|
|
if (strcmp (devname, dev->name) == 0) {
|
|
current_mii = dev;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
printf ("No such device: %s\n", devname);
|
|
return 1;
|
|
}
|
|
|
|
char *miiphy_get_current_dev ()
|
|
{
|
|
if (current_mii)
|
|
return current_mii->name;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* Read to variable <value> from the PHY attached to device <devname>,
|
|
* use PHY address <addr> and register <reg>.
|
|
*
|
|
* Returns:
|
|
* 0 on success
|
|
*/
|
|
int miiphy_read (char *devname, unsigned char addr, unsigned char reg,
|
|
unsigned short *value)
|
|
{
|
|
struct list_head *entry;
|
|
struct mii_dev *dev;
|
|
int found_dev = 0;
|
|
int read_ret = 0;
|
|
|
|
if (!devname) {
|
|
printf ("NULL device name!\n");
|
|
return 1;
|
|
}
|
|
|
|
list_for_each (entry, &mii_devs) {
|
|
dev = list_entry (entry, struct mii_dev, link);
|
|
|
|
if (strcmp (devname, dev->name) == 0) {
|
|
found_dev = 1;
|
|
read_ret = dev->read (devname, addr, reg, value);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (found_dev == 0)
|
|
printf ("No such device: %s\n", devname);
|
|
|
|
return ((found_dev) ? read_ret : 1);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* Write <value> to the PHY attached to device <devname>,
|
|
* use PHY address <addr> and register <reg>.
|
|
*
|
|
* Returns:
|
|
* 0 on success
|
|
*/
|
|
int miiphy_write (char *devname, unsigned char addr, unsigned char reg,
|
|
unsigned short value)
|
|
{
|
|
struct list_head *entry;
|
|
struct mii_dev *dev;
|
|
int found_dev = 0;
|
|
int write_ret = 0;
|
|
|
|
if (!devname) {
|
|
printf ("NULL device name!\n");
|
|
return 1;
|
|
}
|
|
|
|
list_for_each (entry, &mii_devs) {
|
|
dev = list_entry (entry, struct mii_dev, link);
|
|
|
|
if (strcmp (devname, dev->name) == 0) {
|
|
found_dev = 1;
|
|
write_ret = dev->write (devname, addr, reg, value);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (found_dev == 0)
|
|
printf ("No such device: %s\n", devname);
|
|
|
|
return ((found_dev) ? write_ret : 1);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* Print out list of registered MII capable devices.
|
|
*/
|
|
void miiphy_listdev (void)
|
|
{
|
|
struct list_head *entry;
|
|
struct mii_dev *dev;
|
|
|
|
puts ("MII devices: ");
|
|
list_for_each (entry, &mii_devs) {
|
|
dev = list_entry (entry, struct mii_dev, link);
|
|
printf ("'%s' ", dev->name);
|
|
}
|
|
puts ("\n");
|
|
|
|
if (current_mii)
|
|
printf ("Current device: '%s'\n", current_mii->name);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* Read the OUI, manufacture's model number, and revision number.
|
|
*
|
|
* OUI: 22 bits (unsigned int)
|
|
* Model: 6 bits (unsigned char)
|
|
* Revision: 4 bits (unsigned char)
|
|
*
|
|
* Returns:
|
|
* 0 on success
|
|
*/
|
|
int miiphy_info (char *devname, unsigned char addr, unsigned int *oui,
|
|
unsigned char *model, unsigned char *rev)
|
|
{
|
|
unsigned int reg = 0;
|
|
unsigned short tmp;
|
|
|
|
if (miiphy_read (devname, addr, PHY_PHYIDR2, &tmp) != 0) {
|
|
debug ("PHY ID register 2 read failed\n");
|
|
return (-1);
|
|
}
|
|
reg = tmp;
|
|
|
|
debug ("PHY_PHYIDR2 @ 0x%x = 0x%04x\n", addr, reg);
|
|
|
|
if (reg == 0xFFFF) {
|
|
/* No physical device present at this address */
|
|
return (-1);
|
|
}
|
|
|
|
if (miiphy_read (devname, addr, PHY_PHYIDR1, &tmp) != 0) {
|
|
debug ("PHY ID register 1 read failed\n");
|
|
return (-1);
|
|
}
|
|
reg |= tmp << 16;
|
|
debug ("PHY_PHYIDR[1,2] @ 0x%x = 0x%08x\n", addr, reg);
|
|
|
|
*oui = (reg >> 10);
|
|
*model = (unsigned char)((reg >> 4) & 0x0000003F);
|
|
*rev = (unsigned char)(reg & 0x0000000F);
|
|
return (0);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* Reset the PHY.
|
|
* Returns:
|
|
* 0 on success
|
|
*/
|
|
int miiphy_reset (char *devname, unsigned char addr)
|
|
{
|
|
unsigned short reg;
|
|
int loop_cnt;
|
|
|
|
if (miiphy_read (devname, addr, PHY_BMCR, ®) != 0) {
|
|
debug ("PHY status read failed\n");
|
|
return (-1);
|
|
}
|
|
if (miiphy_write (devname, addr, PHY_BMCR, reg | 0x8000) != 0) {
|
|
debug ("PHY reset failed\n");
|
|
return (-1);
|
|
}
|
|
#ifdef CONFIG_PHY_RESET_DELAY
|
|
udelay (CONFIG_PHY_RESET_DELAY); /* Intel LXT971A needs this */
|
|
#endif
|
|
/*
|
|
* Poll the control register for the reset bit to go to 0 (it is
|
|
* auto-clearing). This should happen within 0.5 seconds per the
|
|
* IEEE spec.
|
|
*/
|
|
loop_cnt = 0;
|
|
reg = 0x8000;
|
|
while (((reg & 0x8000) != 0) && (loop_cnt++ < 1000000)) {
|
|
if (miiphy_read (devname, addr, PHY_BMCR, ®) != 0) {
|
|
debug ("PHY status read failed\n");
|
|
return (-1);
|
|
}
|
|
}
|
|
if ((reg & 0x8000) == 0) {
|
|
return (0);
|
|
} else {
|
|
puts ("PHY reset timed out\n");
|
|
return (-1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* Determine the ethernet speed (10/100/1000). Return 10 on error.
|
|
*/
|
|
int miiphy_speed (char *devname, unsigned char addr)
|
|
{
|
|
u16 bmcr, anlpar;
|
|
|
|
#if defined(CONFIG_PHY_GIGE)
|
|
u16 btsr;
|
|
|
|
/*
|
|
* Check for 1000BASE-X. If it is supported, then assume that the speed
|
|
* is 1000.
|
|
*/
|
|
if (miiphy_is_1000base_x (devname, addr)) {
|
|
return _1000BASET;
|
|
}
|
|
/*
|
|
* No 1000BASE-X, so assume 1000BASE-T/100BASE-TX/10BASE-T register set.
|
|
*/
|
|
/* Check for 1000BASE-T. */
|
|
if (miiphy_read (devname, addr, PHY_1000BTSR, &btsr)) {
|
|
printf ("PHY 1000BT status");
|
|
goto miiphy_read_failed;
|
|
}
|
|
if (btsr != 0xFFFF &&
|
|
(btsr & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD))) {
|
|
return _1000BASET;
|
|
}
|
|
#endif /* CONFIG_PHY_GIGE */
|
|
|
|
/* Check Basic Management Control Register first. */
|
|
if (miiphy_read (devname, addr, PHY_BMCR, &bmcr)) {
|
|
printf ("PHY speed");
|
|
goto miiphy_read_failed;
|
|
}
|
|
/* Check if auto-negotiation is on. */
|
|
if (bmcr & PHY_BMCR_AUTON) {
|
|
/* Get auto-negotiation results. */
|
|
if (miiphy_read (devname, addr, PHY_ANLPAR, &anlpar)) {
|
|
printf ("PHY AN speed");
|
|
goto miiphy_read_failed;
|
|
}
|
|
return (anlpar & PHY_ANLPAR_100) ? _100BASET : _10BASET;
|
|
}
|
|
/* Get speed from basic control settings. */
|
|
return (bmcr & PHY_BMCR_100MB) ? _100BASET : _10BASET;
|
|
|
|
miiphy_read_failed:
|
|
printf (" read failed, assuming 10BASE-T\n");
|
|
return _10BASET;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* Determine full/half duplex. Return half on error.
|
|
*/
|
|
int miiphy_duplex (char *devname, unsigned char addr)
|
|
{
|
|
u16 bmcr, anlpar;
|
|
|
|
#if defined(CONFIG_PHY_GIGE)
|
|
u16 btsr;
|
|
|
|
/* Check for 1000BASE-X. */
|
|
if (miiphy_is_1000base_x (devname, addr)) {
|
|
/* 1000BASE-X */
|
|
if (miiphy_read (devname, addr, PHY_ANLPAR, &anlpar)) {
|
|
printf ("1000BASE-X PHY AN duplex");
|
|
goto miiphy_read_failed;
|
|
}
|
|
}
|
|
/*
|
|
* No 1000BASE-X, so assume 1000BASE-T/100BASE-TX/10BASE-T register set.
|
|
*/
|
|
/* Check for 1000BASE-T. */
|
|
if (miiphy_read (devname, addr, PHY_1000BTSR, &btsr)) {
|
|
printf ("PHY 1000BT status");
|
|
goto miiphy_read_failed;
|
|
}
|
|
if (btsr != 0xFFFF) {
|
|
if (btsr & PHY_1000BTSR_1000FD) {
|
|
return FULL;
|
|
} else if (btsr & PHY_1000BTSR_1000HD) {
|
|
return HALF;
|
|
}
|
|
}
|
|
#endif /* CONFIG_PHY_GIGE */
|
|
|
|
/* Check Basic Management Control Register first. */
|
|
if (miiphy_read (devname, addr, PHY_BMCR, &bmcr)) {
|
|
puts ("PHY duplex");
|
|
goto miiphy_read_failed;
|
|
}
|
|
/* Check if auto-negotiation is on. */
|
|
if (bmcr & PHY_BMCR_AUTON) {
|
|
/* Get auto-negotiation results. */
|
|
if (miiphy_read (devname, addr, PHY_ANLPAR, &anlpar)) {
|
|
puts ("PHY AN duplex");
|
|
goto miiphy_read_failed;
|
|
}
|
|
return (anlpar & (PHY_ANLPAR_10FD | PHY_ANLPAR_TXFD)) ?
|
|
FULL : HALF;
|
|
}
|
|
/* Get speed from basic control settings. */
|
|
return (bmcr & PHY_BMCR_DPLX) ? FULL : HALF;
|
|
|
|
miiphy_read_failed:
|
|
printf (" read failed, assuming half duplex\n");
|
|
return HALF;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* Return 1 if PHY supports 1000BASE-X, 0 if PHY supports 10BASE-T/100BASE-TX/
|
|
* 1000BASE-T, or on error.
|
|
*/
|
|
int miiphy_is_1000base_x (char *devname, unsigned char addr)
|
|
{
|
|
#if defined(CONFIG_PHY_GIGE)
|
|
u16 exsr;
|
|
|
|
if (miiphy_read (devname, addr, PHY_EXSR, &exsr)) {
|
|
printf ("PHY extended status read failed, assuming no "
|
|
"1000BASE-X\n");
|
|
return 0;
|
|
}
|
|
return 0 != (exsr & (PHY_EXSR_1000XF | PHY_EXSR_1000XH));
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
#ifdef CFG_FAULT_ECHO_LINK_DOWN
|
|
/*****************************************************************************
|
|
*
|
|
* Determine link status
|
|
*/
|
|
int miiphy_link (char *devname, unsigned char addr)
|
|
{
|
|
unsigned short reg;
|
|
|
|
/* dummy read; needed to latch some phys */
|
|
(void)miiphy_read (devname, addr, PHY_BMSR, ®);
|
|
if (miiphy_read (devname, addr, PHY_BMSR, ®)) {
|
|
puts ("PHY_BMSR read failed, assuming no link\n");
|
|
return (0);
|
|
}
|
|
|
|
/* Determine if a link is active */
|
|
if ((reg & PHY_BMSR_LS) != 0) {
|
|
return (1);
|
|
} else {
|
|
return (0);
|
|
}
|
|
}
|
|
#endif
|
|
#endif /* CONFIG_MII */
|