Re: [PATCH] drm/i915/cnl: Add Gen10 LRC size

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On Fri, Sep 22, 2017 at 6:31 AM Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> wrote:
On Thu, Sep 21, 2017 at 11:19:49PM +0000, Oscar Mateo wrote:
> The total size of the context has decreased with the removal of the
> URB_ATOMIC section. BSpec indicates 16750 DWORDs (17 pages), plus
> one page for PPHWSP, and I'm throwing an extra page for precaution.

I could never find this info on bspec... could you please point that to
me?

Michal already pointed the doc to me!
Now I know where that comes from! :)

Patch Merges to dinq.
Thanks



Anyways this value matches with other HW engineers had told me a while
ago, and we now have CNL on CI, so:

Acked-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>

>
> Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
> Cc: Ben Widawsky <ben@xxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/intel_engine_cs.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
> index 3d135c3..a3115f3 100644
> --- a/drivers/gpu/drm/i915/intel_engine_cs.c
> +++ b/drivers/gpu/drm/i915/intel_engine_cs.c
> @@ -39,6 +39,7 @@
>
>  #define GEN8_LR_CONTEXT_RENDER_SIZE  (20 * PAGE_SIZE)
>  #define GEN9_LR_CONTEXT_RENDER_SIZE  (22 * PAGE_SIZE)
> +#define GEN10_LR_CONTEXT_RENDER_SIZE (19 * PAGE_SIZE)
>
>  #define GEN8_LR_CONTEXT_OTHER_SIZE   ( 2 * PAGE_SIZE)
>
> @@ -150,6 +151,7 @@ struct engine_info {
>               default:
>                       MISSING_CASE(INTEL_GEN(dev_priv));
>               case 10:
> +                     return GEN10_LR_CONTEXT_RENDER_SIZE;
>               case 9:
>                       return GEN9_LR_CONTEXT_RENDER_SIZE;
>               case 8:
> --
> 1.9.1
>
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