/*****************************************************************************
*
* ip_phyCheckStatusChange -- checks for significant changes in PHY state.
*
* A "significant change" is:
* dropped link (e.g. ethernet cable unplugged) OR
* autonegotiation completed + link (e.g. ethernet cable plugged in)
*/
void
ip_phyCheckStatusChange(int ethUnit)
{
int phyUnit;
UINT16 phyHwStatus;
ipPhyInfo_t *lastStatus;
int linkCount = 0;
int lostLinks = 0;
int gainedLinks = 0;
UINT32 phyBase;
UINT32 phyAddr;
for (phyUnit=0; phyUnit < IP_PHY_MAX; phyUnit++) {
if (!IP_IS_ETHUNIT(phyUnit, ethUnit)) {
continue;
}
phyBase = IP_PHYBASE(phyUnit);
phyAddr = IP_PHYADDR(phyUnit);
lastStatus = &ipPhyInfo[phyUnit];
phyHwStatus = phyRegRead(phyBase, phyAddr, IP_PHY_STATUS);
if (lastStatus->isPhyAlive) { /* last known link status was ALIVE */
/* See if we've lost link */
if (phyHwStatus & IP_STATUS_LINK_PASS) {
linkCount++;
} else {
lostLinks++;
#ifdef COBRA_TODO
mv_flushATUDB(phyUnit);
#endif
DRV_PRINT(DRV_DEBUG_PHYCHANGE,("\nenet%d port%d down\n",
ethUnit, phyUnit));
lastStatus->isPhyAlive = FALSE;
}
} else { /* last known link status was DEAD */
/* Check for AutoNegotiation complete */
if (IP_AUTONEG_DONE(phyHwStatus)) {
gainedLinks++;
linkCount++;
DRV_PRINT(DRV_DEBUG_PHYCHANGE,("\nenet%d port%d up\n",
ethUnit, phyUnit));
lastStatus->isPhyAlive = TRUE;
}
}
}
if (linkCount == 0) {
if (lostLinks) {
/* We just lost the last link for this MAC */
ae_unitLinkLost(ethUnit);
}
} else {
if (gainedLinks == linkCount) {
/* We just gained our first link(s) for this MAC */
ae_unitLinkGained(ethUnit);
}
}
}
/******************************************************************************
*
* ip_phyIsSpeed100 - Determines the speed of phy ports associated with the
* specified device.
*
* RETURNS:
* TRUE --> at least one associated PHY at 100 Mbit
* FALSE --> all 10Mbit, or no links
*/
BOOL
ip_phyIsSpeed100(int ethUnit)
{
int phyUnit;
UINT16 phyHwStatus;
UINT32 phyBase;
UINT32 phyAddr;
for (phyUnit=0; phyUnit < IP_PHY_MAX; phyUnit++) {
if (!IP_IS_ETHUNIT(phyUnit, ethUnit)) {
continue;
}
if (ip_phyIsLinkAlive(phyUnit)) {
phyBase = IP_PHYBASE(phyUnit);
phyAddr = IP_PHYADDR(phyUnit);
phyHwStatus = phyRegRead(phyBase, phyAddr, IP_LINK_PARTNER_ABILITY);
if (phyHwStatus & IP_LINK_100BASETX) {
return TRUE;
}
}
}
return FALSE;
}
BOOL
ip_phySpeed(int ethUnit)
{
int phyUnit;
uint16_t phyHwStatus;
uint32_t phyBase;
uint32_t phyAddr;
for (phyUnit=0; phyUnit < IP_PHY_MAX; phyUnit++) {
if (!IP_IS_ETHUNIT(phyUnit, ethUnit)) {
continue;
}
if (ip_phyIsLinkAlive(phyUnit)) {
phyBase = IP_PHYBASE(phyUnit);
phyAddr = IP_PHYADDR(phyUnit);
phyHwStatus = phy_reg_read(phyBase, phyAddr, IP_LINK_PARTNER_ABILITY);
if (phyHwStatus & IP_LINK_100BASETX) {
return AG7100_PHY_SPEED_100TX;
}
}
}
return AG7100_PHY_SPEED_10T;
}
/******************************************************************************
*
* ip_phyIsDuplexFull - Determines whether the phy ports associated with the
* specified device are FULL or HALF duplex.
*
* RETURNS:
* 1 --> FULL
* 0 --> HALF
*/
int
ip_phyIsFullDuplex(int ethUnit)
{
int phyUnit;
uint32_t phyBase;
uint32_t phyAddr;
uint16_t phyHwStatus;
for (phyUnit=0; phyUnit < IP_PHY_MAX; phyUnit++) {
if (!IP_IS_ETHUNIT(phyUnit, ethUnit)) {
continue;
}
if (ip_phyIsLinkAlive(phyUnit)) {
phyBase = IP_PHYBASE(phyUnit);
phyAddr = IP_PHYADDR(phyUnit);
phyHwStatus = phy_reg_read(phyBase, phyAddr, IP_LINK_PARTNER_ABILITY);
printk("ipPhy.c: phyHwStatus 0x%x\n",phyHwStatus);
if ((phyHwStatus & IP_LINK_100BASETX_FULL_DUPLEX) ||
(phyHwStatus & IP_LINK_10BASETX_FULL_DUPLEX)) {
return TRUE;
}
}
return -1;
}
return FALSE;
}
/******************************************************************************
*
* ip_phySetup - reset and setup the PHY switch.
*
* Resets each PHY port.
*
* RETURNS:
* TRUE --> at least 1 PHY with LINK
* FALSE --> no LINKs on this ethernet unit
*/
BOOL
ip_phySetup(int ethUnit)
{
int phyUnit;
UINT16 phyHwStatus;
UINT16 timeout;
int liveLinks = 0;
UINT32 phyBase = 0;
BOOL foundPhy = FALSE;
UINT32 phyAddr;
/* Reset PHYs*/
for (phyUnit=0; phyUnit < IP_PHY_MAX; phyUnit++) {
if (!IP_IS_ETHUNIT(phyUnit, ethUnit)) {
continue;
}
phyBase = IP_PHYBASE(phyUnit);
phyAddr = IP_PHYADDR(phyUnit);
phyRegWrite(phyBase, phyAddr, IP_PHY_CONTROL,
IP_CTRL_SOFTWARE_RESET);
}
/*
* After the phy is reset, it takes a little while before
* it can respond properly.
*/
sysMsDelay(300);
/* Verify that the switch is what we think it is, and that it's ready */
ip_verifyReady(ethUnit);
/* See if there's any configuration data for this enet */
for (phyUnit=0; phyUnit < IP_PHY_MAX; phyUnit++) {
if (IP_ETHUNIT(phyUnit) != ethUnit) {
continue;
}
phyBase = IP_PHYBASE(phyUnit);
foundPhy = TRUE;
break;
}
if (!foundPhy) {
return FALSE; /* No PHY's configured for this ethUnit */
}
#ifdef COBRA_TODO
/* Initialize global switch settings */
/* Initialize the aging time */
/* Set the learning properties */
#endif
/* start auto negogiation on each phy */
for (phyUnit=0; phyUnit < IP_PHY_MAX; phyUnit++) {
if (!IP_IS_ETHUNIT(phyUnit, ethUnit)) {
continue;
}
phyBase = IP_PHYBASE(phyUnit);
phyAddr = IP_PHYADDR(phyUnit);
phyRegWrite(phyBase, phyAddr, IP_AUTONEG_ADVERT,
IP_ADVERTISE_ALL);
phyRegWrite(phyBase, phyAddr, IP_PHY_CONTROL,
IP_CTRL_AUTONEGOTIATION_ENABLE | IP_CTRL_START_AUTONEGOTIATION);
}
/*
* Wait up to .75 seconds for ALL associated PHYs to finish
* autonegotiation. The only way we get out of here sooner is
* if ALL PHYs are connected AND finish autonegotiation.
*/
timeout=5;
for (phyUnit=0; (phyUnit < IP_PHY_MAX) /*&& (timeout > 0) */; phyUnit++) {
if (!IP_IS_ETHUNIT(phyUnit, ethUnit)) {
continue;
}
for (;;) {
phyBase = IP_PHYBASE(phyUnit);
phyAddr = IP_PHYADDR(phyUnit);
phyHwStatus = phyRegRead(phyBase, phyAddr, IP_PHY_STATUS);
if (IP_AUTONEG_DONE(phyHwStatus)) {
DRV_PRINT(DRV_DEBUG_PHYSETUP,
("Port %d, Neg Success\n", phyUnit));
break;
}
if (timeout == 0) {
DRV_PRINT(DRV_DEBUG_PHYSETUP,
("Port %d, Negogiation timeout\n", phyUnit));
break;
}
if (--timeout == 0) {
DRV_PRINT(DRV_DEBUG_PHYSETUP,
("Port %d, Negogiation timeout\n", phyUnit));
break;
}
sysMsDelay(150);
}
}
/*
* All PHYs have had adequate time to autonegotiate.
* Now initialize software status.
*
* It's possible that some ports may take a bit longer
* to autonegotiate; but we can't wait forever. They'll
* get noticed by mv_phyCheckStatusChange during regular
* polling activities.
*/
for (phyUnit=0; phyUnit < IP_PHY_MAX; phyUnit++) {
if (!IP_IS_ETHUNIT(phyUnit, ethUnit)) {
continue;
}
if (ip_phyIsLinkAlive(phyUnit)) {
liveLinks++;
IP_IS_PHY_ALIVE(phyUnit) = TRUE;
} else {
IP_IS_PHY_ALIVE(phyUnit) = FALSE;
}
DRV_PRINT(DRV_DEBUG_PHYSETUP,
("eth%d: Phy Status=%4.4x\n",
ethUnit,
phyRegRead(IP_PHYBASE(phyUnit),
IP_PHYADDR(phyUnit),
IP_PHY_STATUS)));
}
ip_VLANInit(ethUnit);
return (liveLinks > 0);
}
LOCAL void
ip_verifyReady(int ethUnit)
{
int phyUnit;
UINT32 phyBase = 0;
UINT32 phyAddr;
UINT16 phyID1;
UINT16 phyID2;
/*
* The first read to the Phy port registers always fails and
* returns 0. So get things started with a bogus read.
*/
for (phyUnit=0; phyUnit < IP_PHY_MAX; phyUnit++) {
if (!IP_IS_ETHUNIT(phyUnit, ethUnit)) {
continue;
}
phyBase = IP_PHYBASE(phyUnit);
phyAddr = IP_PHYADDR(phyUnit);
phyID1 = phyRegRead(phyBase, phyAddr, IP_PHY_ID1); /* returns 0 */
break;
}
for (phyUnit=0; phyUnit < IP_PHY_MAX; phyUnit++) {
if (!IP_IS_ETHUNIT(phyUnit, ethUnit)) {
continue;
}
/*******************/
/* Verify phy port */
/*******************/
phyBase = IP_PHYBASE(phyUnit);
phyAddr = IP_PHYADDR(phyUnit);
phyID1 = phyRegRead(phyBase, phyAddr, IP_PHY_ID1);
if (phyID1 != IP_PHY_ID1_EXPECTATION) {
DRV_PRINT(DRV_DEBUG_PHYERROR,
("Invalid PHY ID1 for enet%d port%d. Expected 0x%04x, read 0x%04x\n",
ethUnit,
phyUnit,
IP_PHY_ID1_EXPECTATION,
phyID1));
return;
}
phyID2 = phyRegRead(phyBase, phyAddr, IP_PHY_ID2);
if ((phyID2 & IP_OUI_LSB_MASK) != IP_OUI_LSB_EXPECTATION) {
DRV_PRINT(DRV_DEBUG_PHYERROR,
("Invalid PHY ID2 for enet%d port %d. Expected 0x%04x, read 0x%04x\n",
ethUnit,
phyUnit,
IP_OUI_LSB_EXPECTATION,
phyID2));
return;
}
DRV_PRINT(DRV_DEBUG_PHYSETUP,
("Found PHY enet%d port%d: model 0x%x revision 0x%x\n",
ethUnit,
phyUnit,
(phyID2 & IP_MODEL_NUM_MASK) >> IP_MODEL_NUM_SHIFT,
(phyID2 & IP_REV_NUM_MASK) >> IP_REV_NUM_SHIFT));
}
}
