unsigned short w_EepromReadWord(unsigned short w_PCIBoardEepromAddress, char *pc_PCIChipInformation,
unsigned short w_EepromStartAddress)
{
unsigned char b_Counter = 0;
unsigned char b_ReadByte = 0;
unsigned char b_ReadLowByte = 0;
unsigned char b_ReadHighByte = 0;
unsigned char b_SelectedAddressLow = 0;
unsigned char b_SelectedAddressHigh = 0;
unsigned short w_ReadWord = 0;
/**************************/
/* Test the PCI chip type */
/**************************/
if ((!strcmp(pc_PCIChipInformation, "S5920")) ||
(!strcmp(pc_PCIChipInformation, "S5933")))
{
for (b_Counter = 0; b_Counter < 2; b_Counter++)
{
b_SelectedAddressLow = (w_EepromStartAddress + b_Counter) % 256; /* Read the low 8 bit part */
b_SelectedAddressHigh = (w_EepromStartAddress + b_Counter) / 256; /* Read the high 8 bit part */
/************************************/
/* Select the load low address mode */
/************************************/
outb(NVCMD_LOAD_LOW, w_PCIBoardEepromAddress + 0x3F);
/****************/
/* Wait on busy */
/****************/
v_EepromWaitBusy(w_PCIBoardEepromAddress);
/************************/
/* Load the low address */
/************************/
outb(b_SelectedAddressLow,
w_PCIBoardEepromAddress + 0x3E);
/****************/
/* Wait on busy */
/****************/
v_EepromWaitBusy(w_PCIBoardEepromAddress);
/*************************************/
/* Select the load high address mode */
/*************************************/
outb(NVCMD_LOAD_HIGH, w_PCIBoardEepromAddress + 0x3F);
/****************/
/* Wait on busy */
/****************/
v_EepromWaitBusy(w_PCIBoardEepromAddress);
/*************************/
/* Load the high address */
/*************************/
outb(b_SelectedAddressHigh,
w_PCIBoardEepromAddress + 0x3E);
/****************/
/* Wait on busy */
/****************/
v_EepromWaitBusy(w_PCIBoardEepromAddress);
/************************/
/* Select the READ mode */
/************************/
outb(NVCMD_BEGIN_READ, w_PCIBoardEepromAddress + 0x3F);
/****************/
/* Wait on busy */
/****************/
v_EepromWaitBusy(w_PCIBoardEepromAddress);
/*****************************/
/* Read data into the EEPROM */
/*****************************/
b_ReadByte = inb(w_PCIBoardEepromAddress + 0x3E);
/****************/
/* Wait on busy */
/****************/
v_EepromWaitBusy(w_PCIBoardEepromAddress);
/*********************************/
/* Select the upper address part */
/*********************************/
if (b_Counter == 0)
{
b_ReadLowByte = b_ReadByte;
} /* if(b_Counter==0) */
else
{
b_ReadHighByte = b_ReadByte;
} /* if(b_Counter==0) */
} /* for (b_Counter=0; b_Counter<2; b_Counter++) */
w_ReadWord = (b_ReadLowByte | (((unsigned short) b_ReadHighByte) * 256));
} /* end of if ((!strcmp(pc_PCIChipInformation, "S5920")) || (!strcmp(pc_PCIChipInformation, "S5933"))) */
if (!strcmp(pc_PCIChipInformation, "93C76"))
{
/*************************************/
/* Read 16 bit from the EEPROM 93C76 */
/*************************************/
v_EepromCs76Read(w_PCIBoardEepromAddress, w_EepromStartAddress,
&w_ReadWord);
}
return w_ReadWord;
}
unsigned short w_EepromReadWord(unsigned short w_PCIBoardEepromAddress, char *pc_PCIChipInformation,
unsigned short w_EepromStartAddress)
{
unsigned char b_Counter = 0;
unsigned char b_ReadByte = 0;
unsigned char b_ReadLowByte = 0;
unsigned char b_ReadHighByte = 0;
unsigned char b_SelectedAddressLow = 0;
unsigned char b_SelectedAddressHigh = 0;
unsigned short w_ReadWord = 0;
if ((!strcmp(pc_PCIChipInformation, "S5920")) ||
(!strcmp(pc_PCIChipInformation, "S5933")))
{
for (b_Counter = 0; b_Counter < 2; b_Counter++)
{
b_SelectedAddressLow = (w_EepromStartAddress + b_Counter) % 256;
b_SelectedAddressHigh = (w_EepromStartAddress + b_Counter) / 256;
outb(NVCMD_LOAD_LOW, w_PCIBoardEepromAddress + 0x3F);
v_EepromWaitBusy(w_PCIBoardEepromAddress);
outb(b_SelectedAddressLow,
w_PCIBoardEepromAddress + 0x3E);
v_EepromWaitBusy(w_PCIBoardEepromAddress);
outb(NVCMD_LOAD_HIGH, w_PCIBoardEepromAddress + 0x3F);
v_EepromWaitBusy(w_PCIBoardEepromAddress);
outb(b_SelectedAddressHigh,
w_PCIBoardEepromAddress + 0x3E);
v_EepromWaitBusy(w_PCIBoardEepromAddress);
outb(NVCMD_BEGIN_READ, w_PCIBoardEepromAddress + 0x3F);
v_EepromWaitBusy(w_PCIBoardEepromAddress);
b_ReadByte = inb(w_PCIBoardEepromAddress + 0x3E);
v_EepromWaitBusy(w_PCIBoardEepromAddress);
if (b_Counter == 0)
{
b_ReadLowByte = b_ReadByte;
}
else
{
b_ReadHighByte = b_ReadByte;
}
}
w_ReadWord = (b_ReadLowByte | (((unsigned short) b_ReadHighByte) * 256));
}
if (!strcmp(pc_PCIChipInformation, "93C76"))
{
v_EepromCs76Read(w_PCIBoardEepromAddress, w_EepromStartAddress,
&w_ReadWord);
}
return w_ReadWord;
}
