C++ (Cpp) ahciread Examples

Example #1

File: read.c Project: ifbe/live

int read(u64 fd, u64 buf, u64 off, u64 len)
{
	u64 j=0;
	off = off>>9;
	len = (len+0x1ff)>>9;
	while(len>0x80)
	{
		//0x80sectors=0x10000=64KB
		ahciread(0, buf+j*0x10000, off+j*0x80, 0x80);

		j++;
		len -= 0x80;
	}
	ahciread(0, buf+j*0x10000, off+j*0x80, len);
	return len;
}

Example #2

File: stage2.c Project: pnasrat/thimble

// addr - destination
// count - bytes to read
// offset - start byte (offset from start of disk)
void
readbytes(uchar *addr, ulong count, ulong offset)
{
    uchar *eaddr;
    uint lba;

    eaddr = addr + count;

    addr -= offset % SECTSIZE;
    lba = offset/SECTSIZE;

    for (; addr < eaddr; addr += SECTSIZE, lba++) {
        if (has_ahci) {
            ahciread(addr, lba, 1);
        } else {
            ideread(addr, lba, 1);
        }
    }
}