From: Guenter Roeck <li...@roeck-us.net>
Date: Wed, 21 Oct 2015 10:03:05 -0700
> On 10/21/2015 08:57 AM, Arnd Bergmann wrote:
>> On Wednesday 21 October 2015 08:33:11 David Miller wrote:
>>> From: Guenter Roeck <li...@roeck-us.net>
>>> Date: Wed, 21 Oct 2015 07:56:18 -0700
>>>
>>>>> @@ -57,6 +57,11 @@ extern int of_dma_get_range(struct device_node *np,
>>>>> u64 *dma_addr,
>>>>> u64 *paddr, u64 *size);
>>>>> extern bool of_dma_is_coherent(struct device_node *np);
>>>>> #else /* CONFIG_OF_ADDRESS */
>>>>> +static inline u64 of_translate_address(struct device_node *np, const
>>>>> __be32 *addr)
>>>>> +{
>>>>> + return 0;
>>>>
>>>> Maybe return OF_BAD_ADDR ?
>>>
>>> The thing to really do on sparc, is just return the address raw
>>> untranslated
>>> because that just works.
>>>
>>
>> We still need to check #address-cells, right?
>>
>> Something like this?
>>
>> static inline u64 of_translate_address(struct device_node *np, const
>> __be32 *addr)
>> {
>> #if defined(CONFIG_SPARC) || defined(CONFIG_M68K)
>> int pna = of_n_addr_cells(np);
>> u64 ret = be32_to_cpu(addr[pna - 1]);
>>
>> if (pna > 1)
>> ret += (u64)be32_to_cpu(addr[pna - 2]) << 32;
>>
>> return ret;
>
> That suggests that sparc would need a translation after all, which
> seems to contradict what David said earlier.
It's not being translated, the code above is just figuring out what size
the object in the property is.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
