Re: [PATCH 26/27] drm/i915/icl: allow the reg_read ioctl to read the RCS TIMESTAMP register

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On Tue, Jan 09, 2018 at 11:28:34PM +0000, Paulo Zanoni wrote:
> This enables the Mesa driver to advertise support for ARB_timer_query,
> and thus an OpenGL version higher than 3.2.
> 
> Based on the CNL patch by Nanley Chery.
> 
> v2: Rebase.
> 
> Cc: Anuj Phogat <anuj.phogat@xxxxxxxxx>
> Cc: Nanley Chery <nanley.g.chery@xxxxxxxxx>
> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> Requested-by: Anuj Phogat <anuj.phogat@xxxxxxxxx>
> Tested-by: Anuj Phogat <anuj.phogat@xxxxxxxxx>
> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/intel_uncore.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
> index c49beb326414..ae1196b6e1f4 100644
> --- a/drivers/gpu/drm/i915/intel_uncore.c
> +++ b/drivers/gpu/drm/i915/intel_uncore.c
> @@ -1588,7 +1588,7 @@ static const struct reg_whitelist {
>  } reg_read_whitelist[] = { {
>  	.offset_ldw = RING_TIMESTAMP(RENDER_RING_BASE),
>  	.offset_udw = RING_TIMESTAMP_UDW(RENDER_RING_BASE),
> -	.gen_mask = INTEL_GEN_MASK(4, 10),
> +	.gen_mask = INTEL_GEN_MASK(4, 11),

I don't like this mask, but I don't have better solutions and
I'm glad we didn't forget to this gen.


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



>  	.size = 8
>  } };
>  
> -- 
> 2.14.3
> 
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