From: "Danilo Krummrich" <dakr@kernel.org>
To: "Timur Tabi" <ttabi@nvidia.com>
Cc: "Alistair Popple" <apopple@nvidia.com>,
"nova-gpu@lists.linux.dev" <nova-gpu@lists.linux.dev>,
"John Hubbard" <jhubbard@nvidia.com>,
"gary@garyguo.net" <gary@garyguo.net>,
"Eliot Courtney" <ecourtney@nvidia.com>,
"lossin@kernel.org" <lossin@kernel.org>,
"airlied@gmail.com" <airlied@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"rust-for-linux@vger.kernel.org" <rust-for-linux@vger.kernel.org>,
"aliceryhl@google.com" <aliceryhl@google.com>,
"Alexandre Courbot" <acourbot@nvidia.com>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>
Subject: Re: [PATCH 3/4] drm: nova: Add GETPARAM parameter to read the GPU chipset
Date: Mon, 06 Jul 2026 20:24:16 +0200 [thread overview]
Message-ID: <DJRP5QO5JKVT.Y7LCZARVCWJ8@kernel.org> (raw)
In-Reply-To: <59948bff927bd4ad3af5fbe68d5d5e7565c5f729.camel@nvidia.com>
On Mon Jul 6, 2026 at 7:35 PM CEST, Timur Tabi wrote:
> On Mon, 2026-07-06 at 15:34 +1000, Alistair Popple wrote:
>> @@ -38,6 +38,7 @@ pub(crate) fn get_param(
>>
>> let value = match getparam.param as u32 {
>> uapi::NOVA_GETPARAM_VRAM_BAR_SIZE => pdev.resource_len(1)?,
>> + uapi::NOVA_GETPARAM_GPU_CHIPSET => reg_data.api.chipset() as u64,
>
> Can we assign these IOCtl values to match Nouveau as much as possible? I think it would make
> everyone's life easier if we could use the same user-space tools/libraries for Nova that we do for
> Nouveau.
I don't mind using the same numbers where it doesn't matter too much, but for
this to work, it would also require us to retain layout compatibility with
structures, semantics, etc., which I think we should not bother with at all.
Let's build a clean new uAPI, it will get messy over time by itself. :)
next prev parent reply other threads:[~2026-07-06 18:24 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-06 5:34 [PATCH 0/4] gpu: nova: Export parameters from nova-core to nova-drm Alistair Popple
2026-07-06 5:34 ` [PATCH 1/4] gpu: nova-core: Add public driver API to nova-core Alistair Popple
2026-07-06 17:56 ` Danilo Krummrich
2026-07-06 5:34 ` [PATCH 2/4] gpu: nova: Add DRM registration data Alistair Popple
2026-07-06 18:01 ` Danilo Krummrich
2026-07-06 5:34 ` [PATCH 3/4] drm: nova: Add GETPARAM parameter to read the GPU chipset Alistair Popple
2026-07-06 17:35 ` Timur Tabi
2026-07-06 18:24 ` Danilo Krummrich [this message]
2026-07-06 18:16 ` Danilo Krummrich
2026-07-06 5:34 ` [PATCH 4/4] drm: nova: Add a GETPARAM parameter to read usable VRAM size Alistair Popple
2026-07-06 18:26 ` Danilo Krummrich
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