[PATCH] drm/amdgpu: disable UVD/VCE for some polaris 12 variants

[Zhang, Jerry(Junwei)]

On 11/24/18 3:32 AM, Deucher, Alexander wrote:
>
> Is this required?  Are the harvesting fuses incorrect?  If the blocks 
> are harvested, we should bail out of the blocks properly during init. 
>  Also, please make this more explicit if we still need it.  E.g.,
>
>

The harvest fuse is indeed disabling UVD and VCE, as it's a mining card.
Then any command to UVD/VCE causing NULL pointer issue, like amdgpu_test.

AFAIW, windows also disable UVD and VCE in initialization.

>        if ((adev->pdev->device == 0x67df) &&
>               (adev->pdev->revision == 0xf7)) {
>
> /* Some polaris12 variants don't support UVD/VCE */
>
>       } else  {
>
> amdgpu_device_ip_block_add(adev, &uvd_v6_3_ip_block);
>
> amdgpu_device_ip_block_add(adev, &vce_v3_4_ip_block);
>
>     }
>
>

OK, will explicit the process.

Regards,
Jerry
>
> That way if we re-arrange the order later, it will be easier to track.
>
>
> Alex
>
> ------------------------------------------------------------------------
> *From:* amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of 
> Junwei Zhang <Jerry.Zhang at amd.com>
> *Sent:* Friday, November 23, 2018 3:32:27 AM
> *To:* amd-gfx at lists.freedesktop.org
> *Cc:* Zhang, Jerry
> *Subject:* [PATCH] drm/amdgpu: disable UVD/VCE for some polaris 12 
> variants
> Some variants don't support UVD and VCE.
>
> Signed-off-by: Junwei Zhang <Jerry.Zhang at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/vi.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c 
> b/drivers/gpu/drm/amd/amdgpu/vi.c
> index f3a4cf1f013a..3338b013ded4 100644
> --- a/drivers/gpu/drm/amd/amdgpu/vi.c
> +++ b/drivers/gpu/drm/amd/amdgpu/vi.c
> @@ -1660,6 +1660,10 @@ int vi_set_ip_blocks(struct amdgpu_device *adev)
>                          amdgpu_device_ip_block_add(adev, 
> &dce_v11_2_ip_block);
>                  amdgpu_device_ip_block_add(adev, &gfx_v8_0_ip_block);
>                  amdgpu_device_ip_block_add(adev, &sdma_v3_1_ip_block);
> +               /* Some polaris12 variants don't support UVD/VCE */
> +               if ((adev->pdev->device == 0x67df) &&
> +                     (adev->pdev->revision == 0xf7))
> +                       break;
>                  amdgpu_device_ip_block_add(adev, &uvd_v6_3_ip_block);
>                  amdgpu_device_ip_block_add(adev, &vce_v3_4_ip_block);
>                  break;
> -- 
> 2.17.1
>
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