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u-boot/drivers/net/bcm570x_autoneg.c
Jean-Christophe PLAGNIOL-VILLARD 2439e4bfa1 drivers/net : move net drivers to drivers/net 
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2007-11-25 18:35:17 +01:00

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/******************************************************************************/
/* */
/* Broadcom BCM5700 Linux Network Driver, Copyright (c) 2001 Broadcom */
/* Corporation. */
/* All rights reserved. */
/* */
/* 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, located in the file LICENSE. */
/* */
/* History: */
/******************************************************************************/
#if !defined(CONFIG_NET_MULTI)
#if INCLUDE_TBI_SUPPORT
#include "bcm570x_autoneg.h"
#include "bcm570x_mm.h"
/******************************************************************************/
/* Description: */
/* */
/* Return: */
/******************************************************************************/
void
MM_AnTxConfig(
PAN_STATE_INFO pAnInfo)
{
PLM_DEVICE_BLOCK pDevice;
pDevice = (PLM_DEVICE_BLOCK) pAnInfo->pContext;
REG_WR(pDevice, MacCtrl.TxAutoNeg, (LM_UINT32) pAnInfo->TxConfig.AsUSHORT);
pDevice->MacMode |= MAC_MODE_SEND_CONFIGS;
REG_WR(pDevice, MacCtrl.Mode, pDevice->MacMode);
}
/******************************************************************************/
/* Description: */
/* */
/* Return: */
/******************************************************************************/
void
MM_AnTxIdle(
PAN_STATE_INFO pAnInfo)
{
PLM_DEVICE_BLOCK pDevice;
pDevice = (PLM_DEVICE_BLOCK) pAnInfo->pContext;
pDevice->MacMode &= ~MAC_MODE_SEND_CONFIGS;
REG_WR(pDevice, MacCtrl.Mode, pDevice->MacMode);
}
/******************************************************************************/
/* Description: */
/* */
/* Return: */
/******************************************************************************/
char
MM_AnRxConfig(
PAN_STATE_INFO pAnInfo,
unsigned short *pRxConfig)
{
PLM_DEVICE_BLOCK pDevice;
LM_UINT32 Value32;
char Retcode;
Retcode = AN_FALSE;
pDevice = (PLM_DEVICE_BLOCK) pAnInfo->pContext;
Value32 = REG_RD(pDevice, MacCtrl.Status);
if(Value32 & MAC_STATUS_RECEIVING_CFG)
{
Value32 = REG_RD(pDevice, MacCtrl.RxAutoNeg);
*pRxConfig = (unsigned short) Value32;
Retcode = AN_TRUE;
}
return Retcode;
}
/******************************************************************************/
/* Description: */
/* */
/* Return: */
/******************************************************************************/
void
AutonegInit(
PAN_STATE_INFO pAnInfo)
{
unsigned long j;
for(j = 0; j < sizeof(AN_STATE_INFO); j++)
{
((unsigned char *) pAnInfo)[j] = 0;
}
/* Initialize the default advertisement register. */
pAnInfo->mr_adv_full_duplex = 1;
pAnInfo->mr_adv_sym_pause = 1;
pAnInfo->mr_adv_asym_pause = 1;
pAnInfo->mr_an_enable = 1;
}
/******************************************************************************/
/* Description: */
/* */
/* Return: */
/******************************************************************************/
AUTONEG_STATUS
Autoneg8023z(
PAN_STATE_INFO pAnInfo)
{
unsigned short RxConfig;
unsigned long Delta_us;
AUTONEG_STATUS AnRet;
/* Get the current time. */
if(pAnInfo->State == AN_STATE_UNKNOWN)
{
pAnInfo->RxConfig.AsUSHORT = 0;
pAnInfo->CurrentTime_us = 0;
pAnInfo->LinkTime_us = 0;
pAnInfo->AbilityMatchCfg = 0;
pAnInfo->AbilityMatchCnt = 0;
pAnInfo->AbilityMatch = AN_FALSE;
pAnInfo->IdleMatch = AN_FALSE;
pAnInfo->AckMatch = AN_FALSE;
}
/* Increment the timer tick. This function is called every microsecon. */
/* pAnInfo->CurrentTime_us++; */
/* Set the AbilityMatch, IdleMatch, and AckMatch flags if their */
/* corresponding conditions are satisfied. */
if(MM_AnRxConfig(pAnInfo, &RxConfig))
{
if(RxConfig != pAnInfo->AbilityMatchCfg)
{
pAnInfo->AbilityMatchCfg = RxConfig;
pAnInfo->AbilityMatch = AN_FALSE;
pAnInfo->AbilityMatchCnt = 0;
}
else
{
pAnInfo->AbilityMatchCnt++;
if(pAnInfo->AbilityMatchCnt > 1)
{
pAnInfo->AbilityMatch = AN_TRUE;
pAnInfo->AbilityMatchCfg = RxConfig;
}
}
if(RxConfig & AN_CONFIG_ACK)
{
pAnInfo->AckMatch = AN_TRUE;
}
else
{
pAnInfo->AckMatch = AN_FALSE;
}
pAnInfo->IdleMatch = AN_FALSE;
}
else
{
pAnInfo->IdleMatch = AN_TRUE;
pAnInfo->AbilityMatchCfg = 0;
pAnInfo->AbilityMatchCnt = 0;
pAnInfo->AbilityMatch = AN_FALSE;
pAnInfo->AckMatch = AN_FALSE;
RxConfig = 0;
}
/* Save the last Config. */
pAnInfo->RxConfig.AsUSHORT = RxConfig;
/* Default return code. */
AnRet = AUTONEG_STATUS_OK;
/* Autoneg state machine as defined in 802.3z section 37.3.1.5. */
switch(pAnInfo->State)
{
case AN_STATE_UNKNOWN:
if(pAnInfo->mr_an_enable || pAnInfo->mr_restart_an)
{
pAnInfo->CurrentTime_us = 0;
pAnInfo->State = AN_STATE_AN_ENABLE;
}
/* Fall through.*/
case AN_STATE_AN_ENABLE:
pAnInfo->mr_an_complete = AN_FALSE;
pAnInfo->mr_page_rx = AN_FALSE;
if(pAnInfo->mr_an_enable)
{
pAnInfo->LinkTime_us = 0;
pAnInfo->AbilityMatchCfg = 0;
pAnInfo->AbilityMatchCnt = 0;
pAnInfo->AbilityMatch = AN_FALSE;
pAnInfo->IdleMatch = AN_FALSE;
pAnInfo->AckMatch = AN_FALSE;
pAnInfo->State = AN_STATE_AN_RESTART_INIT;
}
else
{
pAnInfo->State = AN_STATE_DISABLE_LINK_OK;
}
break;
case AN_STATE_AN_RESTART_INIT:
pAnInfo->LinkTime_us = pAnInfo->CurrentTime_us;
pAnInfo->mr_np_loaded = AN_FALSE;
pAnInfo->TxConfig.AsUSHORT = 0;
MM_AnTxConfig(pAnInfo);
AnRet = AUTONEG_STATUS_TIMER_ENABLED;
pAnInfo->State = AN_STATE_AN_RESTART;
/* Fall through.*/
case AN_STATE_AN_RESTART:
/* Get the current time and compute the delta with the saved */
/* link timer. */
Delta_us = pAnInfo->CurrentTime_us - pAnInfo->LinkTime_us;
if(Delta_us > AN_LINK_TIMER_INTERVAL_US)
{
pAnInfo->State = AN_STATE_ABILITY_DETECT_INIT;
}
else
{
AnRet = AUTONEG_STATUS_TIMER_ENABLED;
}
break;
case AN_STATE_DISABLE_LINK_OK:
AnRet = AUTONEG_STATUS_DONE;
break;
case AN_STATE_ABILITY_DETECT_INIT:
/* Note: in the state diagram, this variable is set to */
/* mr_adv_ability<12>. Is this right?. */
pAnInfo->mr_toggle_tx = AN_FALSE;
/* Send the config as advertised in the advertisement register. */
pAnInfo->TxConfig.AsUSHORT = 0;
pAnInfo->TxConfig.D5_FD = pAnInfo->mr_adv_full_duplex;
pAnInfo->TxConfig.D6_HD = pAnInfo->mr_adv_half_duplex;
pAnInfo->TxConfig.D7_PS1 = pAnInfo->mr_adv_sym_pause;
pAnInfo->TxConfig.D8_PS2 = pAnInfo->mr_adv_asym_pause;
pAnInfo->TxConfig.D12_RF1 = pAnInfo->mr_adv_remote_fault1;
pAnInfo->TxConfig.D13_RF2 = pAnInfo->mr_adv_remote_fault2;
pAnInfo->TxConfig.D15_NP = pAnInfo->mr_adv_next_page;
MM_AnTxConfig(pAnInfo);
pAnInfo->State = AN_STATE_ABILITY_DETECT;
break;
case AN_STATE_ABILITY_DETECT:
if(pAnInfo->AbilityMatch == AN_TRUE &&
pAnInfo->RxConfig.AsUSHORT != 0)
{
pAnInfo->State = AN_STATE_ACK_DETECT_INIT;
}
break;
case AN_STATE_ACK_DETECT_INIT:
pAnInfo->TxConfig.D14_ACK = 1;
MM_AnTxConfig(pAnInfo);
pAnInfo->State = AN_STATE_ACK_DETECT;
/* Fall through. */
case AN_STATE_ACK_DETECT:
if(pAnInfo->AckMatch == AN_TRUE)
{
if((pAnInfo->RxConfig.AsUSHORT & ~AN_CONFIG_ACK) ==
(pAnInfo->AbilityMatchCfg & ~AN_CONFIG_ACK))
{
pAnInfo->State = AN_STATE_COMPLETE_ACK_INIT;
}
else
{
pAnInfo->State = AN_STATE_AN_ENABLE;
}
}
else if(pAnInfo->AbilityMatch == AN_TRUE &&
pAnInfo->RxConfig.AsUSHORT == 0)
{
pAnInfo->State = AN_STATE_AN_ENABLE;
}
break;
case AN_STATE_COMPLETE_ACK_INIT:
/* Make sure invalid bits are not set. */
if(pAnInfo->RxConfig.bits.D0 || pAnInfo->RxConfig.bits.D1 ||
pAnInfo->RxConfig.bits.D2 || pAnInfo->RxConfig.bits.D3 ||
pAnInfo->RxConfig.bits.D4 || pAnInfo->RxConfig.bits.D9 ||
pAnInfo->RxConfig.bits.D10 || pAnInfo->RxConfig.bits.D11)
{
AnRet = AUTONEG_STATUS_FAILED;
break;
}
/* Set up the link partner advertisement register. */
pAnInfo->mr_lp_adv_full_duplex = pAnInfo->RxConfig.D5_FD;
pAnInfo->mr_lp_adv_half_duplex = pAnInfo->RxConfig.D6_HD;
pAnInfo->mr_lp_adv_sym_pause = pAnInfo->RxConfig.D7_PS1;
pAnInfo->mr_lp_adv_asym_pause = pAnInfo->RxConfig.D8_PS2;
pAnInfo->mr_lp_adv_remote_fault1 = pAnInfo->RxConfig.D12_RF1;
pAnInfo->mr_lp_adv_remote_fault2 = pAnInfo->RxConfig.D13_RF2;
pAnInfo->mr_lp_adv_next_page = pAnInfo->RxConfig.D15_NP;
pAnInfo->LinkTime_us = pAnInfo->CurrentTime_us;
pAnInfo->mr_toggle_tx = !pAnInfo->mr_toggle_tx;
pAnInfo->mr_toggle_rx = pAnInfo->RxConfig.bits.D11;
pAnInfo->mr_np_rx = pAnInfo->RxConfig.D15_NP;
pAnInfo->mr_page_rx = AN_TRUE;
pAnInfo->State = AN_STATE_COMPLETE_ACK;
AnRet = AUTONEG_STATUS_TIMER_ENABLED;
break;
case AN_STATE_COMPLETE_ACK:
if(pAnInfo->AbilityMatch == AN_TRUE &&
pAnInfo->RxConfig.AsUSHORT == 0)
{
pAnInfo->State = AN_STATE_AN_ENABLE;
break;
}
Delta_us = pAnInfo->CurrentTime_us - pAnInfo->LinkTime_us;
if(Delta_us > AN_LINK_TIMER_INTERVAL_US)
{
if(pAnInfo->mr_adv_next_page == 0 ||
pAnInfo->mr_lp_adv_next_page == 0)
{
pAnInfo->State = AN_STATE_IDLE_DETECT_INIT;
}
else
{
if(pAnInfo->TxConfig.bits.D15 == 0 &&
pAnInfo->mr_np_rx == 0)
{
pAnInfo->State = AN_STATE_IDLE_DETECT_INIT;
}
else
{
AnRet = AUTONEG_STATUS_FAILED;
}
}
}
break;
case AN_STATE_IDLE_DETECT_INIT:
pAnInfo->LinkTime_us = pAnInfo->CurrentTime_us;
MM_AnTxIdle(pAnInfo);
pAnInfo->State = AN_STATE_IDLE_DETECT;
AnRet = AUTONEG_STATUS_TIMER_ENABLED;
break;
case AN_STATE_IDLE_DETECT:
if(pAnInfo->AbilityMatch == AN_TRUE &&
pAnInfo->RxConfig.AsUSHORT == 0)
{
pAnInfo->State = AN_STATE_AN_ENABLE;
break;
}
Delta_us = pAnInfo->CurrentTime_us - pAnInfo->LinkTime_us;
if(Delta_us > AN_LINK_TIMER_INTERVAL_US)
{
#if 0
/* if(pAnInfo->IdleMatch == AN_TRUE) */
/* { */
#endif
pAnInfo->State = AN_STATE_LINK_OK;
#if 0
/* } */
/* else */
/* { */
/* AnRet = AUTONEG_STATUS_FAILED; */
/* break; */
/* } */
#endif
}
break;
case AN_STATE_LINK_OK:
pAnInfo->mr_an_complete = AN_TRUE;
pAnInfo->mr_link_ok = AN_TRUE;
AnRet = AUTONEG_STATUS_DONE;
break;
case AN_STATE_NEXT_PAGE_WAIT_INIT:
break;
case AN_STATE_NEXT_PAGE_WAIT:
break;
default:
AnRet = AUTONEG_STATUS_FAILED;
break;
}
return AnRet;
}
#endif /* INCLUDE_TBI_SUPPORT */
#endif /* !defined(CONFIG_NET_MULTI) */
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