Re: [PATCH 3/4] drm: nova: Add GETPARAM parameter to read the GPU chipset
Timur Tabi <[email protected]>
| Newsgroups | dev.linux.lists.nova-gpu,org.freedesktop.lists.dri-devel,org.kernel.vger.linux-kernel,org.kernel.vger.rust-for-linux |
|---|---|
| Message-ID | <[email protected]> |
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.
#define DRM_NOUVEAU_GETPARAM 0x00
#define DRM_NOUVEAU_SETPARAM 0x01 /* deprecated */
#define DRM_NOUVEAU_CHANNEL_ALLOC 0x02
#define DRM_NOUVEAU_CHANNEL_FREE 0x03
#define DRM_NOUVEAU_GROBJ_ALLOC 0x04 /* deprecated */
#define DRM_NOUVEAU_NOTIFIEROBJ_ALLOC 0x05 /* deprecated */
#define DRM_NOUVEAU_GPUOBJ_FREE 0x06 /* deprecated */
#define DRM_NOUVEAU_NVIF 0x07
#define DRM_NOUVEAU_SVM_INIT 0x08
#define DRM_NOUVEAU_SVM_BIND 0x09
#define DRM_NOUVEAU_VM_INIT 0x10
#define DRM_NOUVEAU_VM_BIND 0x11
#define DRM_NOUVEAU_EXEC 0x12
#define DRM_NOUVEAU_GET_ZCULL_INFO 0x13
#define DRM_NOUVEAU_GEM_NEW 0x40
#define DRM_NOUVEAU_GEM_PUSHBUF 0x41
#define DRM_NOUVEAU_GEM_CPU_PREP 0x42
#define DRM_NOUVEAU_GEM_CPU_FINI 0x43
#define DRM_NOUVEAU_GEM_INFO 0x44
#define NOUVEAU_GETPARAM_PCI_VENDOR 3
#define NOUVEAU_GETPARAM_PCI_DEVICE 4
#define NOUVEAU_GETPARAM_BUS_TYPE 5
#define NOUVEAU_GETPARAM_FB_SIZE 8
#define NOUVEAU_GETPARAM_AGP_SIZE 9
#define NOUVEAU_GETPARAM_CHIPSET_ID 11
#define NOUVEAU_GETPARAM_VM_VRAM_BASE 12
#define NOUVEAU_GETPARAM_GRAPH_UNITS 13
#define NOUVEAU_GETPARAM_PTIMER_TIME 14
#define NOUVEAU_GETPARAM_HAS_BO_USAGE 15
#define NOUVEAU_GETPARAM_HAS_PAGEFLIP 16
#define NOUVEAU_GETPARAM_EXEC_PUSH_MAX 17
#define NOUVEAU_GETPARAM_VRAM_BAR_SIZE 18
#define NOUVEAU_GETPARAM_VRAM_USED 19
#define NOUVEAU_GETPARAM_HAS_VMA_TILEMODE 20