?? cf_driver.c
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/*********************************************************************
(c) copyright Motorola Semiconductors (HK) Ltd. 2002
ALL RIGHTS RESERVED
*********************************************************************
CF Driver Module for S12 MCUs
*********************************************************************
File: cf_driver.c
Description: Major part of CF Driver module. (APIs & Functions)
Date: Apr. 2003
Author: Derek Lau
********************************************************************/
#include "FreescaleDef.h" // Get my definitions (Constants & Macros)
#include "uf32reg.h" // Get the DP256 registers.
#include "mk_extern.h" // Get Mini-Kernel global prototypes
#include "cf_includes.h" // Get ATA Driver Configuration
#define _CF_EXTRN_G_DECL_
#include "cf_extern.h"
#include "usbms_extern.h"
#include "utl_includes.h"
// code is placed in the main code area.
#pragma CODE_SEG DEFAULT
CFErrorCode CF_Init(void)
{
#ifdef _CF_SECOND_SLOT_
MODRR = (1<<MODRR_CFSLOT2);
#endif
CF_SCR1 = (1<<CFE) + (1<<CFOE) + (1<<DISINC); // enable CF host
CF_SCR2 = (1<<CA10E)+(1<<CA9E);
mSetBit(CFResetPin,CFResetPort); // set resetpin to high
mSetBit(CFResetPin,CFResetDDR); // set resetpin to output
UTL_Delay(10); // delay
mClearBit(CFResetPin,CFResetPort); // set resetpin to low
UTL_Delay(10); // delay
// gCFSenseKey = 0x03;
/*
CF_Write8Reg(CF_R_SOCKET_COPY,0x00); // drive #0
CF_Read8Reg(CF_R_SOCKET_COPY);
CF_Write8Reg(CF_R_CONFIG,0x01); // I/O Mode
CF_Read8Reg(CF_R_CONFIG);
*/
// CF_IQTest();
return CF_GetSetDeviceInfo();
}
// ==================================================================
// CF_Wait_Card_Busy() -
//
// Wait for CF not busy.
//
// Input - = nil
//
// Output - = nil
//
// Function returns: nil
//
// ==================================================================
CFErrorCode CF_WaitCardBusy(void)
{
muint16 BegTime, CurTime;
muint8 status;
BegTime = MK_GetCurrentTime(); // begin time
do
{
// status = CF_Read8Mem(CF_M_ALT_STATUS); // get status
status = CF_Read8Mem(CF_M_STATUS); // get status
if (!mCheckBit(bitCFBUSY,status))
return(kCSWPass); // exit if not busy
if (mCheckBit(bitCFDWF,status)||mCheckBit(bitCFERR,status))
return(kCSWFailed); // write fault
CurTime = MK_GetCurrentTime(); // current time
}
while ( ((CurTime-BegTime) < kCFTimeout) || ((BegTime - CurTime) < kCFTimeout));
gCFError = kSCSISKHardwareError;
return(kCSWPhaseError); // timeout => phase error
}
CFErrorCode CF_WaitCardDRQ(void)
{
muint16 BegTime, CurTime;
muint8 status;
BegTime = MK_GetCurrentTime(); // begin time
do
{
// status = (muint8) CF_Read8Mem(CF_M_ALT_STATUS);
status = (muint8) CF_Read8Mem(CF_M_STATUS); // get status
if (mCheckBit(bitCFDRQ,status) && !mCheckBit(bitCFBUSY,status))
return(kCSWPass); // exit if data request is set
if (mCheckBit(bitCFDWF,status)||mCheckBit(bitCFERR,status))
return(kCSWFailed); // write fault
CurTime = MK_GetCurrentTime(); // current time
}
while ( ((CurTime-BegTime) < kCFTimeout) || ((BegTime - CurTime) < kCFTimeout));
gCFError = kSCSISKHardwareError;
return(kCSWPhaseError); // timeout => phase error
}
void CF_Wait8CardBusy(void)
{
while (CF_Read8Mem(CF_M_STATUS) & (1<<bitCFBUSY));
}
CFErrorCode CF_WaitCardBusyIO(void)
{
muint16 BegTime, CurTime;
BegTime = MK_GetCurrentTime(); // begin time
do
{
if (!(CF_ReadIO(CF_M_HEAD_STATUS) & (1<<bitCFBUSY)))
return(kCSWPass); // exit
CurTime = MK_GetCurrentTime(); // current time
}
while ( ((CurTime-BegTime) < kCFTimeout) || ((BegTime - CurTime) < kCFTimeout));
gCFError = kSCSISKHardwareError;
return(kCSWPhaseError); // timeout => phase error
}
// ==================================================================
// CF_ReadReg() -
//
// To read CF register.
//
// Input - = Register
//
// Output - = nil
//
// Function return: data
//
// ==================================================================
muint16 CF_ReadReg(muint16 Reg)
{
muint16 dummy;
CF_CCR_L = 0; // card in 16 bit reg mode
CF_BBAR = Reg; // set reg address
while (CF_CR_L & (1<<BSY)); // loop while busy
CF_CR_L = ((1<<INVOKE) | (1<<RWB)); // read CF
while (CF_CR_L & (1<<BSY)); // loop while busy
while ((CF_IFR & (1<<OOIF)) == 0);
dummy = CF_ISR;
return(CF_DR);
}
muint8 CF_Read8Reg(muint16 Reg)
{
muint16 dummy;
CF_CCR_L = 0; // card in 16 bit reg mode
CF_BBAR = Reg; // set reg address
while (CF_CR_L & (1<<BSY)); // loop while busy
CF_CR_L = ((1<<INVOKE) | (1<<RWB)); // read CF
while (CF_CR_L & (1<<BSY)); // loop while busy
while ((CF_IFR & (1<<OOIF)) == 0);
dummy = CF_ISR;
return(CF_DR_H);
}
// ==================================================================
// CF_WriteReg() -
//
// To write CF register.
//
// Input - = Register, data
//
// Output - = nil
//
// Function return
//
// ==================================================================
void CF_WriteReg(muint16 Reg, muint16 Data)
{
CF_CCR_L = 0; // card in 16 bit reg mode
CF_BBAR = Reg; // set reg address
while ((CF_IFR_L & (1<<CFTEIF)) == 0);
CF_DR = Data;
while (CF_CR_L & (1<<BSY)); // loop while busy
CF_CR_L = (1<<INVOKE); // write CF
while (CF_CR_L & (1<<BSY)); // loop while busy
while ((CF_IFR & (1<<OOIF)) == 0);
}
void CF_Write8Reg(muint16 Reg, muint8 Data)
{
// CF_CCR_L = (1<<CE2B); // card in 8 bit reg mode
CF_CCR_L = 0;
CF_BBAR = Reg; // set reg address
while ((CF_IFR_L & (1<<CFTEIF)) == 0);
CF_DR_H = Data;
// CF_DR_L = Data;
while (CF_CR_L & (1<<BSY)); // loop while busy
CF_CR_L = (1<<INVOKE); // write CF
while (CF_CR_L & (1<<BSY)); // loop while busy
while ((CF_IFR & (1<<OOIF)) == 0);
}
// ==================================================================
// CF_ReadMem() -
//
// To read CF in 16 bit memory mode
//
// Input - = Memory location
//
// Output - = nil
//
// Function return: data
//
// ==================================================================
muint16 CF_ReadMem(muint16 Mem)
{
CF_CCR_L = (1<<REGB); // card in 16 bit memory mode
CF_BBAR = Mem; // set reg address
while (CF_CR_L & (1<<BSY)); // loop while busy
CF_CR_L = ((1<<INVOKE)+(1<<RWB));
while (CF_CR_L & (1<<BSY)); // loop while busy
while ((CF_IFR & (1<<OOIF)) == 0);
return(CF_DR);
}
muint8 CF_Read8Mem(muint16 Mem)
{
CF_CR_L = 0x00;
CF_CCR_L = ((1<<CE2B)+(1<<REGB)); // card in 8 bit memory mode
CF_BBAR = Mem; // set reg address
while (CF_CR_L & (1<<BSY)); // loop while busy
CF_CR_L = ((1<<INVOKE) | (1<<RWB));
while (CF_CR_L & (1<<BSY)); // loop while busy
while ((CF_IFR & (1<<OOIF)) == 0);
return(CF_DR_H);
}
muint16 CF_ReadIO(muint16 Mem)
{
CF_CR_L = 0x00;
CF_CCR_L = (1<<COM); // card in 16 bit I/O mode
CF_BBAR = Mem; // set reg address
while (CF_CR_L & (1<<BSY)); // loop while busy
CF_CR_L = ((1<<INVOKE) | (1<<RWB));
while (CF_CR_L & (1<<BSY)); // loop while busy
while ((CF_IFR & (1<<OOIF)) == 0);
return(CF_DR);
}
// ==================================================================
// CF_BufferReadMem() -
//
// Buffer Read data from CF device
//
// Input - = Buffer pointer, Lenght of Transfer
//
// Output - = Data return in buffer pointer
//
// Function returns error code
//
// ==================================================================
CFErrorCode CF_BufferReadMem(muint16 *pBuffer, muint16 XferLen)
{
int i;
CF_CCR_L = (1<<REGB); // card in 16 bit memory mode
CF_BBAR = CF_M_DATA; // set reg address
for (i=0; i<XferLen; i++) // get data
{
while (CF_CR_L & (1<<BSY)); // loop while busy
CF_CR_L = ((1<<INVOKE)+(1<<RWB));
while (CF_CR_L & (1<<BSY)); // loop while busy
while ((CF_IFR & (1<<OOIF)) == 0);
*pBuffer++ = CF_DR;
}
return (kCFPass);
}
// ==================================================================
// CF_IQRead_Mem() -
//
// To read CF in 16 bit memory mode through
//
// Input - = Memory location
//
// Output - = data in IQUE RAM
//
// Function return
//
// ==================================================================
CFErrorCode CF_IQReadMem(void)
{
muint16 dummy;
CF_CCR_L = (1<<REGB); // card in 16 bit memory mode
CF_BBAR = CF_M_DATA; // set reg address
while (CF_CR_L & (1<<BSY)); // loop while busy
CF_CR_L = ((1<<HIS) | (1<<INVOKE) | (1<<RWB));
while (CF_CR_L & (1<<BSY)); // loop while busy
while ((CF_IFR & (1<<OOIF)) == 0);
dummy = CF_CR;
CF_CR_L = 0;
return(0);
}
CFErrorCode CF_IQReadMemOneBlock(muint8 pIQUEBuffer)
{
muint16 dummy;
IQUECR = (1<<CH34DBE)+(1<<IQUEEN)+(1<<IQUERST); // Enable IQUECR
QC34DTR = (1<<SBTE)+(1<<DTHE);
// enable force handshake
QC3CR = (1<<QnEN)+(1<<QnTHRU)+(1<<Qn16EN)+(1<<QnPRST); // enable QC3
mSetBit(DBRST,QC34DCR); // reset QC34 double buffer
mSetBit(QnPRST,QC3CR);
QC3REQ = kQCREQCFRx;
QC3SZB = 0x10 | pIQUEBuffer;
CF_BSR = 0x1FE;
CF_CCR_L = (1<<REGB); // card in 16 bit memory mode
CF_BBAR = CF_M_DATA; // set reg address
while (CF_CR_L & (1<<BSY)); // loop while busy
CF_CR_L = ((1<<HIS) | (1<<INVOKE) | (1<<RWB));
while (CF_CR_L & (1<<BSY)); // loop while busy
while ((CF_IFR & (1<<OOIF)) == 0);
dummy = CF_CR;
CF_CR_L = 0;
while ((QC34DSR & 0x03) != 0x01);
(void) CF_WaitCardBusy();
mClearBit(QnEN,QC3CR);
QC3REQ = kQCREQNone;
mSet2Bit(DRHE,DTHE,QC34DTR); // enable force handshake
return(0);
}
CFErrorCode CF_IQReadMemTwoBlock(muint8 pIQUEBuffer)
{
muint16 dummy;
IQUECR = (1<<CH34DBE)+(1<<IQUEEN)+(1<<IQUERST); // Enable IQUECR
QC34DTR = (1<<SBTE)+(1<<DTHE);
QC3CR = (1<<QnEN)+(1<<QnTHRU)+(1<<Qn16EN)+(1<<QnPRST); // enable QC3
QC1REQ = kQCREQNone;
QC2REQ = kQCREQNone;
mClearBit(QnEN,QC1CR);
mSetBit(DBRST,QC34DCR); // reset QC34 double buffer
QC3REQ = kQCREQCFRx;
// QC4REQ = kQCREQCFRx;
QC3SZB = 0x10 | pIQUEBuffer;
CF_BSR = 0x1FE;
CF_CCR_L = (1<<REGB); // card in 16 bit memory mode
CF_BBAR = CF_M_DATA; // set reg address
while (CF_CR_L & (1<<BSY)); // loop while busy
CF_CR_L = ((1<<HIS) | (1<<INVOKE) | (1<<RWB));
while (CF_CR_L & (1<<BSY)); // loop while busy
while ((CF_IFR & (1<<OOIF)) == 0);
dummy = CF_CR;
CF_CR_L = 0;
// while ((QC34DSR & 0x03) != 0x01);
(void) CF_WaitCardBusy();
while (CF_CR_L & (1<<BSY)); // loop while busy
CF_BSR = 0x1FE;
CF_CCR_L = (1<<REGB); // card in 16 bit memory mode
CF_BBAR = CF_M_DATA; // set reg address
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