NVMe Controllers capability doubt

[Angelo Brito]

Thanks Keith,

That's exactly what I tough. Someone just got confused.


Att,
Angelo Silva Brito.
http://about.me/angelobrito
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On Thu, Apr 24, 2014 at 3:57 PM, Keith Busch <keith.busch at intel.com> wrote:
> On Thu, 24 Apr 2014, Angelo Brito wrote:
>>
>> I was asked if a NVMe controller must support end user's or driver
>> developer's custom commands. I always understood that Commands beyond
>> specification can be added by the vendor if he decides to. But a
>> costumer told us that he interpreted from specs that the controller
>> must also support commands added by the end user. What are yours
>> toughs about this?
>
>
> How on earth would an NVMe controller be able to anticipate what custom
> commands an end user might make up? No, vendor unique commands are
> implemented by the vendor, not the end-user. The same opcode might even
> be completely different commands for two different devices.