[Mesa-dev] [PATCH 10/16] nvc0: store the number of GPCs to nvc0_screen

[Ilia Mirkin]

On Fri, Oct 16, 2015 at 1:22 PM, Samuel Pitoiset
<samuel.pitoiset at gmail.com> wrote:
> NOUVEAU_GETPARAM_GRAPH_UNITS param returns the number of GPCs, the total
> number of TPCs and the number of ROP units. Note that when the DRM
> version is too old the default number of GPCs is fixed to 4.
>
> This will be used to launch the compute kernel which is used to read MP
> performance counters over all GPCs.
>
> Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
> ---
>  src/gallium/drivers/nouveau/nvc0/nvc0_screen.c | 1 +
>  src/gallium/drivers/nouveau/nvc0/nvc0_screen.h | 1 +
>  2 files changed, 2 insertions(+)
>
> diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
> index afd91e6..ba53d10 100644
> --- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
> +++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
> @@ -914,6 +914,7 @@ nvc0_screen_create(struct nouveau_device *dev)
>        else
>           value = (16 << 8) | 4;
>     }
> +   screen->gpc_count = value & 0x0000ffff;

gpc_count is a u8... I guess you wanted to make this &0xff? Doesn't
*really* matter in practice, but a bit confusing.

>     screen->mp_count = value >> 8;
>     screen->mp_count_compute = screen->mp_count;
>
> diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.h b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.h
> index 8cf7560..857eb03 100644
> --- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.h
> +++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.h
> @@ -67,6 +67,7 @@ struct nvc0_screen {
>     struct nouveau_bo *txc; /* TIC (offset 0) and TSC (65536) */
>     struct nouveau_bo *poly_cache;
>
> +   uint8_t gpc_count;
>     uint16_t mp_count;
>     uint16_t mp_count_compute; /* magic reg can make compute use fewer MPs */
>
> --
> 2.6.1
>
> _______________________________________________
> mesa-dev mailing list
> mesa-dev at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/mesa-dev