Get HDD (SATA) identify data problem

I want to get HDD(set as AHCI) identifydata 256 words,
But still have problem. How to change the following program?
Any help can be very appreciated.

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include<dos.h>
#include<math.h>
typedef unsigned char BYTE;
typedef unsigned int WORD;
typedef unsigned long DWORD;
WORD wRevBuf[256];
//----------------------------------------------------------
//Get Sata Base address
WORD getSataBase(BYTE bus, BYTE dev, BYTE fun, BYTE reg)
{
DWORD pciaddr;了)
// bus:0 dev:31 fun:2, reg
pciaddr = (1L << 31) + ((DWORD)bus << 16)+((DWORD)dev << 11)
+ ((WORD)fun << 8)+ (reg & 0xFC);
asm {
mov eax,pciaddr
mov dx,0CF8h //config space control address
out dx,eax
mov dx,0CFCh //conf space data address
in eax, dx
}
return _AX;
}
//----------------------------------------------------------
//get 256 word from HDD verifydata
void getHDD_VerifyData(void)
{
int I;
WORD wBAR;
wBAR = getSataBase(0, 0X1F, 2, 0x10) & 0xFFFE;
//offset 10h, wBAR is 0xF0B0
//offset 18h, wBAR is 0xF090
//using Ru.exe, can know the wBAR result is right value.

printf("wBAR: %08x\n", wBAR);


//outportb(wBAR, 0);
//outportb(wBAR+1, 0);
//outportb(wBAR+2, 0);
//outportb(wBAR+3, 0);
//outportb(wBAR+4, 0);
//outportb(wBAR+5, 0);
//outportb(wBAR+6, 0xA0);
outportb(wBAR+7, 0xEC);
for (I=0; I<256; I++)
wRevBuf = inport(wBAR);
}
//----------------------------------------------------------
void main(int argc, char* argv[])
{

BYTE dat;
/*
printf("0x10 Addr: %08x\n", getSataBase(0, 0X1F, 2, 0x10));
printf("0x14 Addr: %08x\n", getSataBase(0, 0X1F, 2, 0x14));
printf("0x18 Addr: %08x\n", getSataBase(0, 0X1F, 2, 0x18));
printf("0x1c Addr: %08x\n", getSataBase(0, 0X1F, 2, 0x1c));
*/
getHDD_VerifyData();

//display 256 word
printf(" ");
for (int I=0; I<16; I++)
printf("%04X ", I);
printf("\n");
for (int y=0; y<16; y++)
{
if (y == 7) system("pause");
printf("%02x ", y*16);
for (int I=0; I<16; I++)
{
printf("%04X ", wRevBuf[y*16+I]);
}
printf("\n");
}
}