[Intel-gfx] [PATCH] drm/i915: HWSTAM is not a thing on SKL+

[Mika Kuoppala]

Ben Widawsky <benjamin.widawsky at intel.com> writes:

> Compile tested only.
>
> Signed-off-by: Ben Widawsky <benjamin.widawsky at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_lrc.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
> index 42a7be1..a9bc207 100644
> --- a/drivers/gpu/drm/i915/intel_lrc.c
> +++ b/drivers/gpu/drm/i915/intel_lrc.c
> @@ -1466,7 +1466,8 @@ static int gen8_init_common_ring(struct intel_engine_cs *ring)
>  	u8 next_context_status_buffer_hw;
>  
>  	I915_WRITE_IMR(ring, ~(ring->irq_enable_mask | ring->irq_keep_mask));
> -	I915_WRITE(RING_HWSTAM(ring->mmio_base), 0xffffffff);
> +	if (INTEL_INFO(ring->dev)->gen == 8)
> +		I915_WRITE(RING_HWSTAM(ring->mmio_base), 0xffffffff);
>  

It seems that this has only been removed from render,
other engines still has it on skl.

-Mika

>  	if (ring->status_page.obj) {
>  		I915_WRITE(RING_HWS_PGA(ring->mmio_base),
> -- 
> 2.6.4
>
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