linux-kernel - Re: [PATCH v2 4/8] powerpc: add io{read,write}64 accessors

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Date:	Tue, 10 May 2016 18:50:38 +0000
From:	Scott Wood <scott.wood@....com>
To:	Horia Ioan Geanta Neag <horia.geanta@....com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	"Michael Ellerman" <mpe@...erman.id.au>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Cristian Stoica" <cristian.stoica@....com>,
	"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
	Tudor-Dan Ambarus <tudor-dan.ambarus@....com>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	"David S. Miller" <davem@...emloft.net>,
	Alexandru Porosanu <alexandru.porosanu@....com>
Subject: Re: [PATCH v2 4/8] powerpc: add io{read,write}64 accessors

On 05/09/2016 03:20 AM, Horia Ioan Geanta Neag wrote:
> On 5/5/2016 6:37 PM, Horia Geantă wrote:
>> This will allow device drivers to consistently use io{read,write}XX
>> also for 64-bit accesses.
>>
>> Signed-off-by: Horia Geantă <horia.geanta@....com>
> 
> It would be great if PPC maintainers could Ack this patch.
> 
> As stated in the cover letter: https://lkml.org/lkml/2016/5/5/340
> I'd like to go with the whole patch set via cryptodev-2.6 tree.

It looks good to me.  Michael?

-Scott


> 
> Thanks,
> Horia
> 
>> ---
>>  arch/powerpc/kernel/iomap.c | 24 ++++++++++++++++++++++++
>>  1 file changed, 24 insertions(+)
>>
>> diff --git a/arch/powerpc/kernel/iomap.c b/arch/powerpc/kernel/iomap.c
>> index 12e48d56f771..3963f0b68d52 100644
>> --- a/arch/powerpc/kernel/iomap.c
>> +++ b/arch/powerpc/kernel/iomap.c
>> @@ -38,6 +38,18 @@ EXPORT_SYMBOL(ioread16);
>>  EXPORT_SYMBOL(ioread16be);
>>  EXPORT_SYMBOL(ioread32);
>>  EXPORT_SYMBOL(ioread32be);
>> +#ifdef __powerpc64__
>> +u64 ioread64(void __iomem *addr)
>> +{
>> +	return readq(addr);
>> +}
>> +u64 ioread64be(void __iomem *addr)
>> +{
>> +	return readq_be(addr);
>> +}
>> +EXPORT_SYMBOL(ioread64);
>> +EXPORT_SYMBOL(ioread64be);
>> +#endif /* __powerpc64__ */
>>  
>>  void iowrite8(u8 val, void __iomem *addr)
>>  {
>> @@ -64,6 +76,18 @@ EXPORT_SYMBOL(iowrite16);
>>  EXPORT_SYMBOL(iowrite16be);
>>  EXPORT_SYMBOL(iowrite32);
>>  EXPORT_SYMBOL(iowrite32be);
>> +#ifdef __powerpc64__
>> +void iowrite64(u64 val, void __iomem *addr)
>> +{
>> +	writeq(val, addr);
>> +}
>> +void iowrite64be(u64 val, void __iomem *addr)
>> +{
>> +	writeq_be(val, addr);
>> +}
>> +EXPORT_SYMBOL(iowrite64);
>> +EXPORT_SYMBOL(iowrite64be);
>> +#endif /* __powerpc64__ */
>>  
>>  /*
>>   * These are the "repeat read/write" functions. Note the
>>
> 
>