[parisc-linux] Call to IODC hangs.!!!!

[Gururaj Ananthateerta <gururaj@cup.hp.com>]

I am using the following code to write a page to the swap space
using the iodc calls.

The IODC call for writing a boot device in blocks is
ENTRY_IO  with a subfunction BOOT_BLK_DEV_WRITE  = 17.

The call never returns.
Is there anythin I need to do more...


-------------------------------PARTITION TABLE Start -----------------
This is the partition of my disk.

Disk /dev/sda: 67 heads, 62 sectors, 1009 cylinders
Units = sectors of 1 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/sda1            62     33231     16585   f0  Linux/PA-RISC boot
/dev/sda2         33232    531711    249240   82  Linux swap
/dev/sda3        531712   1030191    249240   83  Linux
/dev/sda4       1030192   4191385   1580597   83  Linux
-------------------------------------------PARTITION TABLE End-----------------

-------------------------CALL to Firmware.c-----------------------------
I am calling a pdc_iodc_bootout() as below.

err = pdc_iodc_bootout((unsigned long)17014784, dump_page_buf,
                                1, &count);

17014784  is the start of the swap space.
                     I got this number by doing this.
Start sector of the swap partition * 512
33232 * 512 = 17014784


-------------------------------------------------------------END calling
-------------


---------------------------------------Call to
IODC------------------------------
This is the call to IODC

int
pdc_iodc_bootout(unsigned devaddr, char *memaddr, unsigned size,
                 unsigned *count)
{
    int r;

    static int __attribute__((aligned(8)))   iodc_retbuf[32];
    static char __attribute__((aligned(64))) iodc_dbuf[4096];
    memcpy(iodc_dbuf, memaddr, size);

    if(!(PAGE0->mem_boot.iodc_io)) {
        return -1;
    }

    r = real32_call(PAGE0->mem_boot.iodc_io,
                    (unsigned long)PAGE0->mem_boot.hpa,
ENTRY_IO_BLK_BOOTOUT,
                    PAGE0->mem_boot.spa, __pa(PAGE0->mem_boot.dp.layers),
                    __pa(iodc_retbuf), devaddr, __pa(iodc_dbuf), size,
size);
    memcpy(count, iodc_retbuf, sizeof(*count));

    if (r == 3) /* EOF */
    {
        printk("pdc_iodc_bootin:EOF\n");
        return 0;                       /* count = 0 at EOF */
    }
    else if (r >= 0)
    {
        convert_to_wide(pdc_result);
        return pdc_result[0];           /* count */
    }
    return r;                           /* r < 0; error */
}