Messages in this thread | | | Date | Sat, 25 Feb 2023 17:07:58 +0000 | From | alyssa@rosenzwe ... | Subject | Re: [PATCH 2/5] rust: device: Add a minimal RawDevice trait |
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February 24, 2023 10:25 AM, "Greg Kroah-Hartman" <gregkh@linuxfoundation.org> wrote:
> On Fri, Feb 24, 2023 at 11:44:59PM +0900, Asahi Lina wrote: > >> On 2023/02/24 23:19, Greg Kroah-Hartman wrote:>> Can we see some users >> of this code posted so I can see how struct device >> is going to work in a rust driver? That's the thing I worry most about >> the rust/C interaction here as we have two different ways of thinking >> about reference counts from the two worlds and putting them together is >> going to be "interesting", as can be seen here already. >> >> Also, where are you getting your 'struct device' from in the first >> place? What bus is createing it and giving it to your rust driver? >> >> That would be platform for my GPU driver, matched via OF compatible. > > Ick, a platform device? The GPU isn't on the PCI bus? Wow, that's > horrid...
This is bog standard for Arm SoCs... As far as I know, it's all platform devices in the Arm GPU world: Mali, Adreno, Tegra, VideoCore, and yes, Imaginapple. not really sure what good PCI would do for integrated GPUs.
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