[PATCH 2/3] drm/amdgpu: enabled software IH ring for Vega

[Alex Deucher]

On Mon, Nov 2, 2020 at 6:34 AM Christian König
<ckoenig.leichtzumerken at gmail.com> wrote:
>
> Seems like we won't get the hardware IH1/2 rings on Vega20 working.
>
> Signed-off-by: Christian König <christian.koenig at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/vega10_ih.c | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
> index 407c6093c2ec..cef61dd46a37 100644
> --- a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
> +++ b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
> @@ -91,6 +91,9 @@ static void vega10_ih_enable_interrupts(struct amdgpu_device *adev)
>                 }
>                 adev->irq.ih2.enabled = true;
>         }
> +
> +       if (adev->irq.ih_soft.ring_size)
> +               adev->irq.ih_soft.enabled = true;
>  }
>
>  /**
> @@ -606,6 +609,10 @@ static int vega10_ih_sw_init(void *handle)
>         adev->irq.ih2.use_doorbell = true;
>         adev->irq.ih2.doorbell_index = (adev->doorbell_index.ih + 2) << 1;
>
> +       r = amdgpu_ih_ring_init(adev, &adev->irq.ih_soft, PAGE_SIZE, true);
> +       if (r)
> +               return r;
> +

Should we only enable this on vega20?

Alex


>         r = amdgpu_irq_init(adev);
>
>         return r;
> --
> 2.25.1
>
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