/**
 *  @brief This function downloads helper.
 *  @param priv         pointer to wlan_private structure
 *  @return             WLAN_STATUS_SUCCESS
 */
int sbi_prog_firmware(wlan_private * priv)
{
        cfreg *reg = (cfreg *)priv->wlan_dev.ioport;
 
        u32 size_total;
        u32 size_sent;
        u32 size_block;
        u8  buf[256];
        u8  temp;
        int r;
 
        temp = inb(reg->card.scratch);
 
        if (temp == CF_SCRATCH_FIRMWARE_READY)
                return WLAN_STATUS_SUCCESS;
  
        if (temp != CF_SCRATCH_HOST_BOOT_WAITING)
                return WLAN_STATUS_FAILURE;
 
        size_total  = sizeof(init_image);
        size_sent   = 0;
        size_block  = FW_BLOCK_SIZE;
 
        while (size_sent < size_total)
        {
                PRINTM(INFO, "loading %06d of %06d bytes\n", size_sent, size_total);
 
                if (size_total - size_sent < size_block)
                        size_block = (size_total - size_sent);
 
                memcpy(buf, &init_image[size_sent], size_block);
 
                outw(FW_BLOCK_SIZE, reg->host.io_cmd_write_len);
                outsw(reg->host.io_cmd_write, buf, FW_BLOCK_SIZE / 2);
 
                outb(CF_HCR_HS_CmdDnLdOvr, reg->host.status);
     
                wmb();
                outw(CF_HCR_CIC_CmdDnLdOvr, reg->host.int_cause);
#define FW_POLL_DELAY_10US      10      /*10us delay*/
                r = poll_reg( reg->card.status, CF_CCR_CS_CmdDnLdRdy,
                                FW_RETRY, FW_POLL_DELAY_10US);
 
                if (r != WLAN_STATUS_SUCCESS)
                        return WLAN_STATUS_FAILURE;
 
                size_sent += size_block;
        }
 
        outw(0x00, reg->host.io_cmd_write_len);
        outb(CF_HCR_HS_CmdDnLdOvr, reg->host.status);
        wmb();
        outw(CF_HCR_CIC_CmdDnLdOvr, reg->host.int_cause);
   
        return WLAN_STATUS_SUCCESS;
}