[Mesa-dev] [PATCH] winsys/radeon: fix a wrong NUM_TILE_PIPES value from the kernel

[Nick Sarnie]

Hi,

This fixes the bug for me.

Tested-by: Nick Sarnie <commendsarnex at gmail.com>

Thanks

On Sun, Feb 7, 2016 at 2:25 PM, Marek Olšák <maraeo at gmail.com> wrote:

> From: Marek Olšák <marek.olsak at amd.com>
>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94019
> ---
>  src/gallium/winsys/radeon/drm/radeon_drm_winsys.c | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
> b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
> index 35dc7e6..49c310c 100644
> --- a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
> +++ b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
> @@ -405,6 +405,12 @@ static boolean do_winsys_init(struct
> radeon_drm_winsys *ws)
>              radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_TILE_PIPES, NULL,
>                                   &ws->info.num_tile_pipes);
>
> +            /* The kernel returns 12 for some cards for an unknown reason.
> +             * I thought this was supposed to be a power of two.
> +             */
> +            if (ws->gen == DRV_SI && ws->info.num_tile_pipes == 12)
> +                ws->info.num_tile_pipes = 8;
> +
>              if (radeon_get_drm_value(ws->fd, RADEON_INFO_BACKEND_MAP,
> NULL,
>                                        &ws->info.r600_gb_backend_map))
>                  ws->info.r600_gb_backend_map_valid = TRUE;
> --
> 2.1.4
>
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