📄 ide.c
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/***************************************************************************
** File name : ide.c
** Author : x.cheng
** Create date :
**
** Comment:
** file used for something
**
** Revisions:
** $Log: ide.c,v $
** Revision 1.6 2005/08/11 14:42:34 x.cheng
** ide channel 1 supurted, attach cdrom to channel 1, master
** install channel 1 ISR to irq
**
** Revision 1.5 2005/08/09 16:10:19 x.cheng
** add IDE0,device 1(cdrom) irq handler
**
** Revision 1.4 2005/08/04 08:41:23 x.cheng
** new method for interrupt ISR install
**
** Revision 1.3 2005/08/02 15:29:14 x.cheng
** 在函数vDoIdePriIRQ直接处理中断，目前调试完成的是IDE_READ_BLK。
**
** Revision 1.2 2005/07/27 15:59:28 x.cheng
** IDE request managment function added
**
** Revision 1.1.1.1 2005/07/27 06:53:15 x.cheng
** add into repositories
**
**
***************************************************************************/
#include "const.h"
#include "type.h"
#include "stdarg.h"
#define __IDE_HD_SRC__
#include "..\..\Inc\i386\io.h"
#include "..\..\Inc\i386\system.h"
#include "..\..\Inc\i386\x86.h"
#include "..\..\Inc\i386\interrupt.h"
#include "..\..\Inc\mts.h"
#include "..\..\Inc\tui.h"
#include "..\..\Inc\ide.h"
#include "..\..\Inc\debug.h"
#include "..\inc\def_hd.h"
#include "..\inc\def_ata.h"
#include "..\inc\def_ide.h"
/* debug preprocessor instrument
#ifdef _DEBUG__
#ifdef _DEBUG_IDE__
#endif
#endif
***************************/
/*************取setup.asm设置的硬盘数据**************/
#define HD_INFO (ts_HD_HWinfo *)0x90080
/*************global variable******************/
//-------------------------------------------
// The request-struct contains all necessary data
// to load a nr of sectors into memory
ts_IdeRequest g_astRequest[MAX_REQUEST_NR];
//-------------------------------------------
// used to wait on when there are no free requests
ts_Task* g_pstWaitForRequest = NULL;
//-------------------------------------------
ts_IdeDevice g_astDevice[IDE_DEVICE_NR] = {
{NULL, NULL}, //no device
{NULL, NULL}, //fd
{NULL, NULL}, //hd
{NULL, NULL}, //cd
{NULL, NULL} //pr
};
/******ISR defined in hwintr.asm***********/
void vIdePriISR(void);
/************local function prototype**************/
static inline void IdeLockBuffer(ts_BufferBlock* pstBlock);
static inline void IdeUnlockBuffer( ts_BufferBlock* pstBlock);
static void IdeMakeRequest(int iCmd, ts_BufferBlock* pstBlock);
static void IdeAddRequest(ts_IdeDevice* pstDevice, ts_IdeRequest* pstRequest);
/************************************************************
*************************************************************
** Function Name: IdeInitialize
** Author: x.cheng
**
** Comment:
** 初始化ide设备，中断号是
**
** List of parameters:
**
**
** Return value:
** return code, or information
**
** Revisions:
**
*************************************************************
*************************************************************/
//void vHdInit(void)
void IdeInitialize(void)
{
int i;
#ifdef _DEBUG__
#ifdef _DEBUG_IDE__
kprintf("ide init....\n");
#endif
#endif
g_astDevice[IDE_DEVICE_HD].fpRequestFct = vDoHdRequest;
g_astDevice[IDE_DEVICE_HD].pstCurrentRequest = NULL;
g_astDevice[IDE_DEVICE_CD].fpRequestFct = DoCdRequest;
g_astDevice[IDE_DEVICE_CD].pstCurrentRequest = NULL;
for (i=0; i<MAX_REQUEST_NR; i++) {
g_astRequest[i].iDevice = -1;
g_astRequest[i].pstNext = NULL;
}
IsrInstallHandler(HWM_IDE_CHN0_IRQe, &vDoIdePriIRQ);
IsrInstallHandler(HWM_IDE_CHN1_IRQf, &DoIdeSecIRQ);
}
/************************************************************
*************************************************************
** Function Name: vDoIdePriIRQ
** Author: x.cheng
**
** Comment:
** 每次ide控制器中断会调用这个函数，本函数判定ide接口上
** 设备的种类，转到相应设备的处理函数上运行。
**
** List of parameters:
** no
**
** Return value:
** no
**
** Revisions:
**
*************************************************************
*************************************************************/
void vDoIdePriIRQ(ts_IrqContext *pstContext)
{
ts_IdeRequest* pstCurrent=NULL;
#ifdef _DEBUG__
#ifdef _DEBUG_IDE__
kprintf("Here is a ide interrupt occuring !\n");
#endif
#endif
// kprintf("device is= %x, ", ucId5InterruptDevice());
switch (ucId5InterruptDevice(IDE_CHANNEL_0)) {
case DEVICE_0:
// kprintf("device 0\n");
pstCurrent=g_astDevice[IDE_DEVICE_HD].pstCurrentRequest;
break;
case DEVICE_1:
// kprintf("device 1\n");
pstCurrent=g_astDevice[IDE_DEVICE_CD].pstCurrentRequest;
break;
}
if ( !pstCurrent ) {
POSITION1("no request...\n");
return;
}
if ( !(g_astDevice[pstCurrent->iDevice].fpRequestFct) ) {
panic("\n%s:%s:%d line, no request function...\n", __FILE__,__FUNCTION__,__LINE__);
return;
}
if (pstCurrent->ucCmd == IDE_READ_BLK) {
if ( ucId5CmdResult(IDE_CHANNEL_0) ) {
if ( ++pstCurrent->ucError >= MAX_ERRORS ) {
#ifdef _DEBUG__
#ifdef _DEBUG_IDE__
POSITION1("read request max error encounter...\n");
#endif
#endif
IdeEndRequest(pstCurrent->iDevice, 0);
(g_astDevice[pstCurrent->iDevice].fpRequestFct)();
}
return;
}
if ( pstCurrent->iDevice == IDE_DEVICE_HD ) {
if ( !iId2ReadHdData(pstCurrent) )
return;
}
else if ( pstCurrent->iDevice == IDE_DEVICE_CD ) {
if ( !iId3ReadCdData(pstCurrent) )
return;
}
IdeEndRequest(pstCurrent->iDevice, 1);
(g_astDevice[pstCurrent->iDevice].fpRequestFct)();
pstCurrent->iDevice = -1; //free..
} else if (pstCurrent->ucCmd == IDE_WRITE_BLK) {
if ( ucId5CmdResult(IDE_CHANNEL_0) != DRQ_STAT) {
if ( ++pstCurrent->ucError >= MAX_ERRORS ) {
#ifdef _DEBUG__
#ifdef _DEBUG_IDE__
POSITION1("write request max error encounter...\n");
#endif
#endif
IdeEndRequest(pstCurrent->iDevice, 0);
(g_astDevice[IDE_DEVICE_HD].fpRequestFct)();
}
return;
}
//由中断调用，注意，一次中断只有一个扇区的数据(512bytes)
if (-- pstCurrent->ulNumOfSectors) {
pstCurrent->pucBuffer += 512;
pstCurrent->ulStartOfSector ++;
//WritePortString(HD_DATA, pstCurrent->pucBuffer, SECTOR_SIZE/2); //same to code
WritePortString(HD_DATA, pstCurrent->pucBuffer, SECTOR_SIZE);
return;
}
IdeEndRequest(pstCurrent->iDevice, 1);
(g_astDevice[IDE_DEVICE_HD].fpRequestFct)();
} else {
#ifdef _DEBUG__
#ifdef _DEBUG_IDE__
POSITION1("unexpected request....\n");
#endif
#endif
}
return;
}
/************************************************************
*************************************************************
** Function Name: vDoIdeSecIRQ
** Author: x.cheng
**
** Comment:
** 每次ide控制器中断(secondary)会调用这个函数，
** 本函数判定ide接口上设备的种类，转到相应设备的处理函数上运行。
**
** List of parameters:
** no
**
** Return value:
** no
**
** Revisions:
**
*************************************************************
*************************************************************/
void DoIdeSecIRQ(ts_IrqContext *pstContext)
{
ts_IdeRequest* pstCurrent;
#ifdef _DEBUG__
#ifdef _DEBUG_IDE__
kprintf("Here is a channel 1 ide interrupt occuring !\n");
#endif
#endif
if ( !(pstCurrent=g_astDevice[IDE_DEVICE_CD].pstCurrentRequest) ) {
POSITION1("no request...\n");
return;
}
if ( !(g_astDevice[pstCurrent->iDevice].fpRequestFct) ) {
panic("\n%s:%s:%d line, no request function...\n", __FILE__,__FUNCTION__,__LINE__);
return;
}
if (pstCurrent->ucCmd == IDE_READ_BLK) {
if ( ucId5CmdResult(IDE_CHANNEL_1) ) {
if ( ++pstCurrent->ucError >= MAX_ERRORS ) {
#ifdef _DEBUG__
#ifdef _DEBUG_IDE__
POSITION1("read request max error encounter...\n");
#endif
#endif
IdeEndRequest(pstCurrent->iDevice, 0);
(g_astDevice[pstCurrent->iDevice].fpRequestFct)();
}
return;
}
if ( pstCurrent->iDevice == IDE_DEVICE_HD ) {
if ( !iId2ReadHdData(pstCurrent) )
return;
}
else if ( pstCurrent->iDevice == IDE_DEVICE_CD ) {
if ( !iId3ReadCdData(pstCurrent) )
return;
}
IdeEndRequest(pstCurrent->iDevice, 1);
(g_astDevice[pstCurrent->iDevice].fpRequestFct)();
pstCurrent->iDevice = -1; //free..
} else if (pstCurrent->ucCmd == IDE_WRITE_BLK) {
if ( ucId5CmdResult(IDE_CHANNEL_1) != DRQ_STAT) {
if ( ++pstCurrent->ucError >= MAX_ERRORS ) {
#ifdef _DEBUG__
#ifdef _DEBUG_IDE__
POSITION1("write request max error encounter...\n");
#endif
#endif
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