/*
* Stop hardware timer and read time elapsed since last start.
*
* returns
* The elapsed time since last start in units of 16us.
*
*/
SK_U32 SkHwtRead(
SK_AC *pAC, /* Adapters context */
SK_IOC Ioc) /* IoContext */
{
SK_U32 TRead;
SK_U32 IStatus;
if (pAC->Hwt.TActive) {
SkHwtStop(pAC, Ioc);
SK_IN32(Ioc, B2_TI_VAL, &TRead);
TRead /= SK_HWT_FAC;
SK_IN32(Ioc, B0_ISRC, &IStatus);
/* Check if timer expired (or wraped around) */
if ((TRead > pAC->Hwt.TStart) || (IStatus & IS_TIMINT)) {
SkHwtStop(pAC, Ioc);
pAC->Hwt.TStop = pAC->Hwt.TStart;
}
else {
pAC->Hwt.TStop = pAC->Hwt.TStart - TRead;
}
}
return(pAC->Hwt.TStop);
}
/******************************************************************************
*
* RamReadAddr() - Reads one quadword from board RAM
*
* Description:
* Read one quadword from board RAM.
* For Yukon Extreme, if Addr == 2^29 then the qword
* at the current position of the hardware pointer is read.
*
* Returns:
* 0 on success, 1 on error
*/
static int RamReadAddr(
SK_AC *pAC, /* Adapter context */
SK_U32 Addr, /* Address to be read at */
SK_U32 *pLowDword, /* Lower Dword to be read */
SK_U32 *pHighDword, /* Upper Dword to be read */
int SelectedRam) /* Selected RAM buffer 0, 1 or 3 */
{
/* Support for Yukon Extreme and Supreme */
if ((pAC->GIni.GIChipId == CHIP_ID_YUKON_EX) ||
(pAC->FwApp.ChipMode == SK_GEASF_CHIP_SU)) {
if (Addr == BIT_29) {
Addr = SelectedRam << 30;
}
else {
/* Use given address (lower 8 bits for TX, lower 9 bits for RX). */
Addr = (Addr & 0x7fffL) | BIT_29 | (SelectedRam << 30);
}
SelectedRam = 0;
}
else {
return(1);
}
SK_OUT32(pAC->IoBase, SELECT_RAM_BUFFER(SelectedRam, B3_RAM_ADDR), Addr);
/* Read Access is initiated by reading the lower dword. */
SK_IN32(pAC->IoBase, SELECT_RAM_BUFFER(SelectedRam, B3_RAM_DATA_LO), pLowDword);
SK_IN32(pAC->IoBase, SELECT_RAM_BUFFER(SelectedRam, B3_RAM_DATA_HI), pHighDword);
return(0);
}
/*
* Stop hardware timer and read time elapsed since last start.
*
* returns
* The elapsed time since last start in units of 1 us.
*
*/
SK_U32 SkHwtRead(
SK_AC *pAC, /* Adapter Context */
SK_IOC IoC) /* I/O Context */
{
SK_U32 TRead;
SK_U32 IStatus;
SK_U32 TimerInt;
TimerInt = CHIP_ID_YUKON_2(pAC) ? Y2_IS_TIMINT : IS_TIMINT;
if (pAC->Hwt.TActive) {
SkHwtStop(pAC, IoC);
SK_IN32(IoC, B2_TI_VAL, &TRead);
TRead /= SK_HWT_FAC;
SK_IN32(IoC, B0_ISRC, &IStatus);
/* Check if timer expired (or wrapped around) */
if ((TRead > pAC->Hwt.TStart) || ((IStatus & TimerInt) != 0)) {
SkHwtStop(pAC, IoC);
pAC->Hwt.TStop = pAC->Hwt.TStart;
}
else {
pAC->Hwt.TStop = pAC->Hwt.TStart - TRead;
}
}
return(pAC->Hwt.TStop);
}
/*
* waits for a completion of an I2C transfer
*
* Returns
* Nothing
*/
void SkI2cWaitIrq(
SK_AC *pAC, /* Adapter Context */
SK_IOC IoC) /* I/O Context */
{
SK_SENSOR *pSen;
SK_U64 StartTime;
SK_U32 IrqSrc;
pSen = &pAC->I2c.SenTable[pAC->I2c.CurrSens];
if (pSen->SenState == SK_SEN_IDLE) {
return;
}
StartTime = SkOsGetTime(pAC);
do {
if (SkOsGetTime(pAC) - StartTime > SK_TICKS_PER_SEC / 8) {
SK_I2C_STOP(IoC);
#ifndef SK_DIAG
SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_I2C_E016, SKERR_I2C_E016MSG);
#endif /* !SK_DIAG */
return;
}
SK_IN32(IoC, B0_ISRC, &IrqSrc);
} while ((IrqSrc & IS_I2C_READY) == 0);
pSen->SenState = SK_SEN_IDLE;
return;
} /* SkI2cWaitIrq */
static SK_BOOL
IsIntModEnabled(SK_AC *pAC) {
unsigned long CtrCmd;
SK_IN32(pAC->IoBase, B2_IRQM_CTRL, &CtrCmd);
if ((CtrCmd & TIM_START) == TIM_START) {
return SK_TRUE;
} else {
return SK_FALSE;
}
}
/*
* reads a single byte or 4 bytes from the I2C device
*
* returns the word read
*/
SK_U32 SkI2cRead(
SK_AC *pAC, /* Adapter Context */
SK_IOC IoC, /* I/O Context */
int I2cDev, /* I2C Device Address */
int I2cReg, /* I2C Device Register Address */
int I2cBurst) /* I2C Burst Flag ( 0 || I2C_BURST ) */
{
SK_U32 Data;
SK_OUT32(IoC, B2_I2C_DATA, 0);
SK_I2C_CTL(IoC, I2C_READ, I2cDev, I2cReg, I2cBurst);
if (SkI2cWait(pAC, IoC, I2C_READ)) {
w_print("I2C Transfer Timeout!\n");
}
SK_IN32(IoC, B2_I2C_DATA, &Data);
return(Data);
} /* SkI2cRead */
/*****************************************************************************
*
* SkPflCheck - Determines whether a parallel flash is present
*
* Description:
* This function determines whether a parallel flash is present.
*
* Returns:
* 0 No parallel flash
* 1 Parallel flash detected
*/
int SkPflCheck(
SK_AC *pAC,
SK_IOC IoC)
{
#ifdef XXX
unsigned long opcodes;
#endif /* XXX */
SK_IN8(IoC, B2_CHIP_ID, &pAC->pfl.YkChipId);
if (pAC->pfl.YkChipId == CHIP_ID_YUKON_SUPR) {
SkPflSetDevPtr(pAC, IoC);
if (pAC->pfl.pPflDev == NULL) {
/* unknown or no flash */
fl_print("\nFlash device\t: none\n");
return (0);
}
#ifdef XXX
/*
* set the opcodes for the SPI flash found
*/
SK_IN32(IoC, SPI_Y2_OPCODE_REG1, &opcodes);
opcodes &= 0x000000ffL;
opcodes |= ((((unsigned long)(pAC->pfl.pPflDev->opcodes.op_read)) << 8) |
(((unsigned long)(pAC->pfl.pPflDev->opcodes.op_read_id)) << 16) |
(((unsigned long)(pAC->pfl.pPflDev->opcodes.op_read_status)) << 24));
SK_OUT32(IoC, SPI_Y2_OPCODE_REG1, opcodes);
opcodes = (((unsigned long)(pAC->pfl.pPflDev->opcodes.op_write_enable)) |
(((unsigned long)(pAC->pfl.pPflDev->opcodes.op_write)) << 8) |
(((unsigned long)(pAC->pfl.pPflDev->opcodes.op_sector_erase)) << 16) |
(((unsigned long)(pAC->pfl.pPflDev->opcodes.op_chip_erase)) << 24));
SK_OUT32(IoC, SPI_Y2_OPCODE_REG2, opcodes);
#endif /* XXX */
return (1);
}
return (0);
}
/*
* reads a single byte or 4 bytes from the I2C device
*
* returns the word read
*/
SK_U32 SkI2cRead(
SK_AC *pAC, /* Adapter Context */
SK_IOC IoC, /* I/O Context */
int I2cDev, /* I2C Device Address */
int I2cReg, /* I2C Device Register Address */
int I2cBurst) /* I2C Burst Flag */
{
SK_U32 Data;
SK_OUT32(IoC, B2_I2C_DATA, 0);
SK_I2C_CTL(IoC, I2C_READ, I2cDev, I2cReg, I2cBurst);
if (SkI2cWait(pAC, IoC, I2C_READ) != 0) {
w_print("%s\n", SKERR_I2C_E002MSG);
}
SK_IN32(IoC, B2_I2C_DATA, &Data);
return(Data);
} /* SkI2cRead */
/*****************************************************************************
*
* SkPflReadDword - Reads a dword from the parallel flash
*
* Description:
* The function reads a dword from the specified address in the parallel flash.
*
* Returns:
* The DWord read
*/
static SK_U32 SkPflReadDword(
SK_AC *pAC,
SK_IOC IoC,
int Part,
SK_U32 Addr) /* address in the parallel flash to read from */
{
SK_U32 Val;
Addr &= (1 << 20) - 1;
Addr |= (2 << 24);
/* bits 31..29 == 000: read access to information memory. */
/* bits 26..24 == 010: 32-bit access. */
Addr |= (Part << 30);
SK_OUT32(IoC, FCU_MEM_CTRL, Addr);
SK_PFL_WAIT_FINISH_RD(pAC, IoC);
SK_IN32(IoC, FCU_RD_DATA, &Val);
return (Val);
}
/*****************************************************************************
*
* SkPflReadChipId - Reads parallel flash IDs
*
* Description:
* This function reads the IDs of the parallel flash.
*
* Returns:
* Nothing (parallel flash manufacturer and device ID in parameters)
*/
static void SkPflReadChipId(
SK_AC *pAC,
SK_IOC IoC,
SK_U32 *pManId,
SK_U16 *pDevId)
{
/* Put manufacturer and device ID into proper registers. */
SkPflCommand(pAC, IoC, -1, pAC->pfl.pPflDev->opcodes.OpReadManDev, 0);
/* bits 31..29 == 001: read access to parallel flash register. */
/* bits 26..24 == 010: 32-bit access. */
/* bits 7..0: register address */
SK_OUT32(IoC, FCU_MEM_CTRL, BIT_29 | (2 << 24) | 0x18);
SK_PFL_WAIT_FINISH_RD(pAC, IoC);
SK_IN32(IoC, FCU_RD_DATA, pManId);
*pManId = FL_SWAP32(*pManId);
SK_OUT32(IoC, FCU_MEM_CTRL, BIT_29 | (2 << 24) | 0x1C);
SK_PFL_WAIT_FINISH_RD(pAC, IoC);
SK_IN16(IoC, FCU_RD_DATA, pDevId);
*pDevId = FL_SWAP16(*pDevId);
return;
}
/*****************************************************************************
*
* FwCheckLinkMode - Check the firmware link state and link mode
*
* Description:
*
* Returns:
* Nothing
*/
void FwCheckLinkMode(
SK_AC *pAC, /* Pointer to adapter context */
SK_IOC IoC, /* IO context handle */
int Port)
{
SK_U16 PhyStat;
SK_U32 PhyCtrl;
PhyStat = 0x0;
PhyCtrl = 0x0;
pAC->GIni.GIDontInitPhy = SK_FALSE;
if (pAC->UseLinkMaintenance == SK_TRUE) {
/* Check if link is up */
SK_IN32(pAC->IoBase, MR_ADDR(Port, GPHY_CTRL), &PhyCtrl);
if ((PhyCtrl & GPC_PHY_LINK_UP) == 0) {
#ifdef MV_FW_SDK_LINK_MAINTENANCE_DEBUG
printk("FwCheckLinkMode: No link on port %d\n", Port);
#endif
return;
}
else {
#ifdef MV_FW_SDK_LINK_MAINTENANCE_DEBUG
printk("FwCheckLinkMode: Link up on port %d\n", Port);
#endif
/* Check link state */
GM_IN16(IoC, Port, GM_GP_CTRL, &PhyStat);
#ifdef MV_FW_SDK_LINK_MAINTENANCE_DEBUG
printk("FwCheckLinkMode: GM_GP_CTRL: 0x%x\n",
PhyStat);
#endif
if (pAC->DriverLinkStat != PhyStat) {
#ifdef MV_FW_SDK_LINK_MAINTENANCE_DEBUG
printk("FwCheckLinkMode: Link status changed\n");
printk("FwCheckLinkMode: pAC->DriverLinkStat: 0x%x\n",
pAC->DriverLinkStat);
#endif
return;
}
/* Store link state */
pAC->DriverLinkStat = PhyStat;
/* Enable link maintenance */
pAC->GIni.GIDontInitPhy = SK_TRUE;
#ifdef MV_FW_SDK_LINK_MAINTENANCE_DEBUG
printk("FwCheckLinkMode: Link match, GIDontInitPhy: %d\n",
pAC->GIni.GIDontInitPhy);
#endif
}
}
else {
#ifdef MV_FW_SDK_LINK_MAINTENANCE_DEBUG
printk("FwCheckLinkMode: UseLinkMaintenance not set!\n");
#endif
}
return;
} /* FwCheckLinkMode */
/*
* read a sensors value (LM80 specific)
*
* This function reads a sensors value from the I2C sensor chip LM80.
* The sensor is defined by its index into the sensors database in the struct
* pAC points to.
*
* Returns 1 if the read is completed
* 0 if the read must be continued (I2C Bus still allocated)
*/
int SkLm80ReadSensor(
SK_AC *pAC, /* Adapter Context */
SK_IOC IoC, /* I/O Context needed in level 1 and 2 */
SK_SENSOR *pSen) /* Sensor to be read */
{
SK_I32 Value;
switch (pSen->SenState) {
case SK_SEN_IDLE:
/* Send address to ADDR register */
SK_I2C_CTL(IoC, I2C_READ, pSen->SenDev, I2C_025K_DEV, pSen->SenReg, 0);
pSen->SenState = SK_SEN_VALUE ;
BREAK_OR_WAIT(pAC, IoC, I2C_READ);
case SK_SEN_VALUE:
/* Read value from data register */
SK_IN32(IoC, B2_I2C_DATA, ((SK_U32 *)&Value));
Value &= 0xff; /* only least significant byte is valid */
/* Do NOT check the Value against the thresholds */
/* Checking is done in the calling instance */
if (pSen->SenType == SK_SEN_VOLT) {
/* Voltage sensor */
pSen->SenValue = Value * SK_LM80_VT_LSB;
pSen->SenState = SK_SEN_IDLE ;
return(1);
}
if (pSen->SenType == SK_SEN_FAN) {
if (Value != 0 && Value != 0xff) {
/* Fan speed counter */
pSen->SenValue = SK_LM80_FAN_FAKTOR/Value;
}
else {
/* Indicate Fan error */
pSen->SenValue = 0;
}
pSen->SenState = SK_SEN_IDLE ;
return(1);
}
/* First: correct the value: it might be negative */
if ((Value & 0x80) != 0) {
/* Value is negative */
Value = Value - 256;
}
/* We have a temperature sensor and need to get the signed extension.
* For now we get the extension from the last reading, so in the normal
* case we won't see flickering temperatures.
*/
pSen->SenValue = (Value * SK_LM80_TEMP_LSB) +
(pSen->SenValue % SK_LM80_TEMP_LSB);
/* Send address to ADDR register */
SK_I2C_CTL(IoC, I2C_READ, pSen->SenDev, I2C_025K_DEV, LM80_TEMP_CTRL, 0);
pSen->SenState = SK_SEN_VALEXT ;
BREAK_OR_WAIT(pAC, IoC, I2C_READ);
case SK_SEN_VALEXT:
/* Read value from data register */
SK_IN32(IoC, B2_I2C_DATA, ((SK_U32 *)&Value));
Value &= LM80_TEMP_LSB_9; /* only bit 7 is valid */
/* cut the LSB bit */
pSen->SenValue = ((pSen->SenValue / SK_LM80_TEMP_LSB) *
SK_LM80_TEMP_LSB);
if (pSen->SenValue < 0) {
/* Value negative: The bit value must be subtracted */
pSen->SenValue -= ((Value >> 7) * SK_LM80_TEMPEXT_LSB);
}
else {
