Re: [PATCH v3 01/10] gpu: nova-core: convert PMC registers to kernel register macro

[Danilo Krummrich <dakr@kernel.org>]

On 3/23/26 3:11 PM, Alexandre Courbot wrote:
> On Mon Mar 23, 2026 at 8:21 PM JST, Danilo Krummrich wrote:
>> On Mon Mar 23, 2026 at 12:07 PM CET, Alexandre Courbot wrote:
>>> -impl TryFrom<u8> for Architecture {
>>> +impl TryFrom<Bounded<u32, 6>> for Architecture {
>>>      type Error = Error;
>>>  
>>> -    fn try_from(value: u8) -> Result<Self> {
>>> -        match value {
>>> +    fn try_from(value: Bounded<u32, 6>) -> Result<Self> {
>>> +        match u8::from(value) {
>>>              0x16 => Ok(Self::Turing),
>>>              0x17 => Ok(Self::Ampere),
>>>              0x19 => Ok(Self::Ada),
>>> @@ -155,23 +151,26 @@ fn try_from(value: u8) -> Result<Self> {
>>>      }
>>>  }
>>>  
>>> -impl From<Architecture> for u8 {
>>> +impl From<Architecture> for Bounded<u32, 6> {
>>>      fn from(value: Architecture) -> Self {
>>> -        // CAST: `Architecture` is `repr(u8)`, so this cast is always lossless.
>>> -        value as u8
>>> +        match value {
>>> +            Architecture::Turing => Bounded::<u32, _>::new::<0x16>(),
>>> +            Architecture::Ampere => Bounded::<u32, _>::new::<0x17>(),
>>> +            Architecture::Ada => Bounded::<u32, _>::new::<0x19>(),
>>> +        }
>>>      }
>>>  }
>>
>> Can this use bounded_enum!()?
> 
> If we move it outside of `falcon.rs`, yes. I didn't want to make too
> permanent a solution with the `TryFrom` macro being developed, but if
> you prefer that way that's doable. I guess `bounded_enum` would need to
> be in the root module though to be accessible by both `falcon` and
> `gpu`.

Since we are going to have it as an intermediate solution, let's be consistent
about it. Maybe num.rs is a good place?