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NET: Add Ethernet 1000BASE-X support for PPC4xx

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This patch adds support for 1000BASE-X to functions "miiphy_speed ()" and
"miiphy_duplex()".  It also adds function "miiphy_is_1000base_x ()", which
returns non-zero iff the PHY registers are configured for 1000BASE-X.  The
"mii info" command is modified to distinguish between 1000BASE-T and -X.

Signed-off-by: Larry Johnson <lrj@acm.org>
Signed-off-by: Ben Warren <bwarren@qstreams.com>
This commit is contained in:
Larry Johnson
2007-11-01 08:46:50 -05:00
committed by Ben Warren
parent 298035df49
commit 71bc6e6474
3 changed files with 121 additions and 60 deletions
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151
common/miiphyutil.c
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@@ -344,101 +344,136 @@ int miiphy_reset (char *devname, unsigned char addr)
/*****************************************************************************
*
* Determine the ethernet speed (10/100).
* Determine the ethernet speed (10/100/1000). Return 10 on error.
*/
int miiphy_speed (char *devname, unsigned char addr)
{
unsigned short reg;
u16 bmcr, anlpar;
#if defined(CONFIG_PHY_GIGE)
if (miiphy_read (devname, addr, PHY_1000BTSR, &reg)) {
printf ("PHY 1000BT Status read failed\n");
} else {
if (reg != 0xFFFF) {
if ((reg & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD))
!= 0) {
return (_1000BASET);
}
}
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, &reg)) {
puts ("PHY speed read failed, assuming 10bT\n");
return (_10BASET);
if (miiphy_read (devname, addr, PHY_BMCR, &bmcr)) {
printf ("PHY speed");
goto miiphy_read_failed;
}
/* Check if auto-negotiation is on. */
if ((reg & PHY_BMCR_AUTON) != 0) {
if (bmcr & PHY_BMCR_AUTON) {
/* Get auto-negotiation results. */
if (miiphy_read (devname, addr, PHY_ANLPAR, &reg)) {
puts ("PHY AN speed read failed, assuming 10bT\n");
return (_10BASET);
}
if ((reg & PHY_ANLPAR_100) != 0) {
return (_100BASET);
} else {
return (_10BASET);
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. */
else if (reg & PHY_BMCR_100MB) {
return (_100BASET);
} else {
return (_10BASET);
}
return (bmcr & PHY_BMCR_100MB) ? _100BASET : _10BASET;
miiphy_read_failed:
printf (" read failed, assuming 10BASE-T\n");
return _10BASET;
}
/*****************************************************************************
*
* Determine full/half duplex.
* Determine full/half duplex. Return half on error.
*/
int miiphy_duplex (char *devname, unsigned char addr)
{
unsigned short reg;
u16 bmcr, anlpar;
#if defined(CONFIG_PHY_GIGE)
if (miiphy_read (devname, addr, PHY_1000BTSR, &reg)) {
printf ("PHY 1000BT Status read failed\n");
} else {
if ((reg != 0xFFFF) &&
(reg & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD))) {
if ((reg & PHY_1000BTSR_1000FD) != 0) {
return (FULL);
} else {
return (HALF);
}
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, &reg)) {
puts ("PHY duplex read failed, assuming half duplex\n");
return (HALF);
if (miiphy_read (devname, addr, PHY_BMCR, &bmcr)) {
puts ("PHY duplex");
goto miiphy_read_failed;
}
/* Check if auto-negotiation is on. */
if ((reg & PHY_BMCR_AUTON) != 0) {
if (bmcr & PHY_BMCR_AUTON) {
/* Get auto-negotiation results. */
if (miiphy_read (devname, addr, PHY_ANLPAR, &reg)) {
puts ("PHY AN duplex read failed, assuming half duplex\n");
return (HALF);
}
if ((reg & (PHY_ANLPAR_10FD | PHY_ANLPAR_TXFD)) != 0) {
return (FULL);
} else {
return (HALF);
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. */
else if (reg & PHY_BMCR_DPLX) {
return (FULL);
} else {
return (HALF);
}
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