void __cpuinit set_firmware_width_unlocked(void)
{
    int ret;

    ret = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES,
                       __pa(pdc_result), 0);
    convert_to_wide(pdc_result);
    if (pdc_result[0] != NARROW_FIRMWARE)
        parisc_narrow_firmware = 0;
}

/**
 * pdc_model_info - Return model information about the processor.
 * @model: The return buffer.
 *
 * Returns the version numbers, identifiers, and capabilities from the processor module.
 */
int pdc_model_info(struct pdc_model *model) 
{
	int retval;

	spin_lock_irq(&pdc_lock);
	retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_INFO, __pa(pdc_result), 0);
	convert_to_wide(pdc_result);
	memcpy(model, pdc_result, sizeof(*model));
	spin_unlock_irq(&pdc_lock);

	return retval;
}

/**
 * pdc_cache_info - Return cache and TLB information.
 * @cache_info: The return buffer.
 *
 * Returns information about the processor's cache and TLB.
 */
int pdc_cache_info(struct pdc_cache_info *cache_info)
{
        int retval;

        spin_lock_irq(&pdc_lock);
        retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_INFO, __pa(pdc_result), 0);
        convert_to_wide(pdc_result);
        memcpy(cache_info, pdc_result, sizeof(*cache_info));
        spin_unlock_irq(&pdc_lock);

        return retval;
}

/**
 * pdc_tod_read - Read the Time-Of-Day clock.
 * @tod: The return buffer:
 *
 * Read the Time-Of-Day clock
 */
int pdc_tod_read(struct pdc_tod *tod)
{
        int retval;

        spin_lock_irq(&pdc_lock);
        retval = mem_pdc_call(PDC_TOD, PDC_TOD_READ, __pa(pdc_result), 0);
        convert_to_wide(pdc_result);
        memcpy(tod, pdc_result, sizeof(*tod));
        spin_unlock_irq(&pdc_lock);

        return retval;
}

/**
 * pdc_model_versions - Identify the version number of each processor.
 * @cpu_id: The return buffer.
 * @id: The id of the processor to check.
 *
 * Returns the version number for each processor component.
 *
 * This comment was here before, but I do not know what it means :( -RB
 * id: 0 = cpu revision, 1 = boot-rom-version
 */
int pdc_model_versions(unsigned long *versions, int id)
{
        int retval;

        spin_lock_irq(&pdc_lock);
        retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_VERSIONS, __pa(pdc_result), id);
        convert_to_wide(pdc_result);
        *versions = pdc_result[0];
        spin_unlock_irq(&pdc_lock);

        return retval;
}

/**
 * pdc_stable_write - Write data to Stable Storage.
 * @staddr: Stable Storage address to access.
 * @memaddr: The memory address where Stable Storage data shall be read from.
 * @count: number of bytes to transfert. count is multiple of 4.
 *
 * This PDC call reads count bytes from the supplied memaddr address,
 * and copies count bytes to the Stable Storage address staddr.
 * The call will fail if staddr+count > PDC_STABLE size.
 */
int pdc_stable_write(unsigned long staddr, void *memaddr, unsigned long count)
{
       int retval;

       spin_lock_irq(&pdc_lock);
       memcpy(pdc_result, memaddr, count);
       convert_to_wide(pdc_result);
       retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_WRITE, staddr,
               __pa(pdc_result), count);
       spin_unlock_irq(&pdc_lock);

       return retval;
}

/**
 * pdc_tod_read - Read the Time-Of-Day clock.
 * @tod: The return buffer:
 *
 * Read the Time-Of-Day clock
 */
int pdc_tod_read(struct pdc_tod *tod)
{
    int retval;
    unsigned long flags;

    spin_lock_irqsave(&pdc_lock, flags);
    retval = mem_pdc_call(PDC_TOD, PDC_TOD_READ, __pa(pdc_result), 0);
    convert_to_wide(pdc_result);
    memcpy(tod, pdc_result, sizeof(*tod));
    spin_unlock_irqrestore(&pdc_lock, flags);

    return retval;
}

int __cpuinit pdc_coproc_cfg_unlocked(struct pdc_coproc_cfg *pdc_coproc_info)
{
    int ret;

    ret = mem_pdc_call(PDC_COPROC, PDC_COPROC_CFG, __pa(pdc_result));
    convert_to_wide(pdc_result);
    pdc_coproc_info->ccr_functional = pdc_result[0];
    pdc_coproc_info->ccr_present = pdc_result[1];
    pdc_coproc_info->revision = pdc_result[17];
    pdc_coproc_info->model = pdc_result[18];

    return ret;
}

/**
 * pdc_model_info - Return model information about the processor.
 * @model: The return buffer.
 *
 * Returns the version numbers, identifiers, and capabilities from the processor module.
 */
int pdc_model_info(struct pdc_model *model)
{
    int retval;
    unsigned long flags;

    spin_lock_irqsave(&pdc_lock, flags);
    retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_INFO, __pa(pdc_result), 0);
    convert_to_wide(pdc_result);
    memcpy(model, pdc_result, sizeof(*model));
    spin_unlock_irqrestore(&pdc_lock, flags);

    return retval;
}

/**
 * pdc_pci_irt_size - Get the number of entries in the interrupt routing table.
 * @num_entries: The return value.
 * @hpa: The HPA for the device.
 *
 * This PDC function returns the number of entries in the specified cell's
 * interrupt table.
 * Similar to PDC_PAT stuff - but added for Forte/Allegro boxes
 */ 
int pdc_pci_irt_size(unsigned long *num_entries, unsigned long hpa)
{
	int retval;

	spin_lock_irq(&pdc_lock);
	retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_GET_INT_TBL_SIZE, 
			      __pa(pdc_result), hpa);
	convert_to_wide(pdc_result);
	*num_entries = pdc_result[0];
	spin_unlock_irq(&pdc_lock);

	return retval;
}

/**
 * pdc_spaceid_bits - Return whether Space ID hashing is turned on.
 * @space_bits: Should be 0, if not, bad mojo!
 *
 * Returns information about Space ID hashing.
 */
int pdc_spaceid_bits(unsigned long *space_bits)
{
	int retval;

	spin_lock_irq(&pdc_lock);
	pdc_result[0] = 0;
	retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_RET_SPID, __pa(pdc_result), 0);
	convert_to_wide(pdc_result);
	*space_bits = pdc_result[0];
	spin_unlock_irq(&pdc_lock);

	return retval;
}

/**
 * pdc_cache_info - Return cache and TLB information.
 * @cache_info: The return buffer.
 *
 * Returns information about the processor's cache and TLB.
 */
int pdc_cache_info(struct pdc_cache_info *cache_info)
{
    int retval;
    unsigned long flags;

    spin_lock_irqsave(&pdc_lock, flags);
    retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_INFO, __pa(pdc_result), 0);
    convert_to_wide(pdc_result);
    memcpy(cache_info, pdc_result, sizeof(*cache_info));
    spin_unlock_irqrestore(&pdc_lock, flags);

    return retval;
}

/**
 * pdc_model_capabilities - Returns the platform capabilities.
 * @capabilities: The return buffer.
 *
 * Returns information about platform support for 32- and/or 64-bit
 * OSes, IO-PDIR coherency, and virtual aliasing.
 */
int pdc_model_capabilities(unsigned long *capabilities)
{
        int retval;

        spin_lock_irq(&pdc_lock);
        pdc_result[0] = 0; /* preset zero (call may not be implemented!) */
        retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0);
        convert_to_wide(pdc_result);
        *capabilities = pdc_result[0];
        spin_unlock_irq(&pdc_lock);

        return retval;
}

/**
 * pdc_model_cpuid - Returns the CPU_ID.
 * @cpu_id: The return buffer.
 *
 * Returns the CPU_ID value which uniquely identifies the cpu portion of
 * the processor module.
 */
int pdc_model_cpuid(unsigned long *cpu_id)
{
        int retval;

        spin_lock_irq(&pdc_lock);
        pdc_result[0] = 0; /* preset zero (call may not be implemented!) */
        retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CPU_ID, __pa(pdc_result), 0);
        convert_to_wide(pdc_result);
        *cpu_id = pdc_result[0];
        spin_unlock_irq(&pdc_lock);

        return retval;
}

/**
 * set_firmware_width - Determine if the firmware is wide or narrow.
 * 
 * This function must be called before any pdc_* function that uses the convert_to_wide
 * function.
 */
void __init set_firmware_width(void)
{
#ifdef __LP64__
	int retval;

        spin_lock_irq(&pdc_lock);
	retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0);
	convert_to_wide(pdc_result);
	if(pdc_result[0] != NARROW_FIRMWARE)
		parisc_narrow_firmware = 0;
        spin_unlock_irq(&pdc_lock);
#endif
}

int pdc_mem_mem_table(struct pdc_memory_table_raddr *r_addr,
		struct pdc_memory_table *tbl, unsigned long entries)
{
	int retval;

	spin_lock_irq(&pdc_lock);
	retval = mem_pdc_call(PDC_MEM, PDC_MEM_TABLE, __pa(pdc_result), __pa(pdc_result2), entries);
	convert_to_wide(pdc_result);
	memcpy(r_addr, pdc_result, sizeof(*r_addr));
	memcpy(tbl, pdc_result2, entries * sizeof(*tbl));
	spin_unlock_irq(&pdc_lock);

	return retval;
}

/**
 * pdc_stable_read - Read data from Stable Storage.
 * @staddr: Stable Storage address to access.
 * @memaddr: The memory address where Stable Storage data shall be copied.
 * @count: number of bytes to transfer. count is multiple of 4.
 *
 * This PDC call reads from the Stable Storage address supplied in staddr
 * and copies count bytes to the memory address memaddr.
 * The call will fail if staddr+count > PDC_STABLE size.
 */
int pdc_stable_read(unsigned long staddr, void *memaddr, unsigned long count)
{
    int retval;
    unsigned long flags;

    spin_lock_irqsave(&pdc_lock, flags);
    retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_READ, staddr,
                          __pa(pdc_result), count);
    convert_to_wide(pdc_result);
    memcpy(memaddr, pdc_result, count);
    spin_unlock_irqrestore(&pdc_lock, flags);

    return retval;
}

/**
 * pdc_system_map_find_addrs - Retrieve additional address ranges.
 * @pdc_addr_info: Return buffer address.
 * @mod_index: Fixed address module index.
 * @addr_index: Address range index.
 * 
 * Retrieve additional information about subsequent address ranges for modules
 * with multiple address ranges.  
 */
int pdc_system_map_find_addrs(struct pdc_system_map_addr_info *pdc_addr_info, 
			      long mod_index, long addr_index)
{
	int retval;

	spin_lock_irq(&pdc_lock);
	retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_ADDRESS, __pa(pdc_result),
			      mod_index, addr_index);
	convert_to_wide(pdc_result);
	memcpy(pdc_addr_info, pdc_result, sizeof(*pdc_addr_info));
	spin_unlock_irq(&pdc_lock);

	pdc_addr_info->mod_addr = f_extend(pdc_addr_info->mod_addr);
	return retval;
}

/**
 * pdc_coproc_cfg - To identify coprocessors attached to the processor.
 * @pdc_coproc_info: Return buffer address.
 *
 * This PDC call returns the presence and status of all the coprocessors
 * attached to the processor.
 */
int __init pdc_coproc_cfg(struct pdc_coproc_cfg *pdc_coproc_info)
{
        int retval;

        spin_lock_irq(&pdc_lock);
        retval = mem_pdc_call(PDC_COPROC, PDC_COPROC_CFG, __pa(pdc_result));
        convert_to_wide(pdc_result);
        pdc_coproc_info->ccr_functional = pdc_result[0];
        pdc_coproc_info->ccr_present = pdc_result[1];
        pdc_coproc_info->revision = pdc_result[17];
        pdc_coproc_info->model = pdc_result[18];
        spin_unlock_irq(&pdc_lock);

        return retval;
}

/**
 * pdc_iodc_read - Read data from the modules IODC.
 * @actcnt: The actual number of bytes.
 * @hpa: The HPA of the module for the iodc read.
 * @index: The iodc entry point.
 * @iodc_data: A buffer memory for the iodc options.
 * @iodc_data_size: Size of the memory buffer.
 *
 * This PDC call reads from the IODC of the module specified by the hpa
 * argument.
 */
int pdc_iodc_read(unsigned long *actcnt, unsigned long hpa, unsigned int index,
		  void *iodc_data, unsigned int iodc_data_size)
{
	int retval;

	spin_lock_irq(&pdc_lock);
	retval = mem_pdc_call(PDC_IODC, PDC_IODC_READ, __pa(pdc_result), hpa, 
			      index, __pa(pdc_result2), iodc_data_size);
	convert_to_wide(pdc_result);
	*actcnt = pdc_result[0];
	memcpy(iodc_data, pdc_result2, iodc_data_size);
	spin_unlock_irq(&pdc_lock);

	return retval;
}