[PATCH] drm/amdgpu: add HDP flush dummy for UVD 6/7

[Alex Deucher]

Are you going to push this or should I?

Alex

On Tue, May 8, 2018 at 11:46 AM, Deucher, Alexander
<Alexander.Deucher at amd.com> wrote:
> Acked-by: Alex Deucher <alexander.deucher at amd.com>
>
> ________________________________
> From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of Christian
> König <ckoenig.leichtzumerken at gmail.com>
> Sent: Tuesday, May 8, 2018 6:30:06 AM
> To: amd-gfx at lists.freedesktop.org
> Subject: [PATCH] drm/amdgpu: add HDP flush dummy for UVD 6/7
>
> The UVD firmware doesn't seem to like the HDP flush here.
>
> This worked for years without HDP flush, so just skip it.
>
> Signed-off-by: Christian König <christian.koenig at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c | 16 ++++++++++++++--
>  drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c | 13 ++++++++++++-
>  2 files changed, 26 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
> b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
> index 6d3359889c0b..8041b26a7a21 100644
> --- a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
> @@ -963,6 +963,16 @@ static void uvd_v6_0_enc_ring_emit_fence(struct
> amdgpu_ring *ring, u64 addr,
>          amdgpu_ring_write(ring, HEVC_ENC_CMD_TRAP);
>  }
>
> +/**
> + * uvd_v6_0_ring_emit_hdp_flush - skip HDP flushing
> + *
> + * @ring: amdgpu_ring pointer
> + */
> +static void uvd_v6_0_ring_emit_hdp_flush(struct amdgpu_ring *ring)
> +{
> +       /* The firmware doesn't seem to like touching registers at this
> point. */
> +}
> +
>  /**
>   * uvd_v6_0_ring_test_ring - register write test
>   *
> @@ -1528,12 +1538,13 @@ static const struct amdgpu_ring_funcs
> uvd_v6_0_ring_phys_funcs = {
>          .set_wptr = uvd_v6_0_ring_set_wptr,
>          .parse_cs = amdgpu_uvd_ring_parse_cs,
>          .emit_frame_size =
> -               6 + 6 + /* hdp flush / invalidate */
> +               6 + /* hdp invalidate */
>                  10 + /* uvd_v6_0_ring_emit_pipeline_sync */
>                  14, /* uvd_v6_0_ring_emit_fence x1 no user fence */
>          .emit_ib_size = 8, /* uvd_v6_0_ring_emit_ib */
>          .emit_ib = uvd_v6_0_ring_emit_ib,
>          .emit_fence = uvd_v6_0_ring_emit_fence,
> +       .emit_hdp_flush = uvd_v6_0_ring_emit_hdp_flush,
>          .test_ring = uvd_v6_0_ring_test_ring,
>          .test_ib = amdgpu_uvd_ring_test_ib,
>          .insert_nop = amdgpu_ring_insert_nop,
> @@ -1552,7 +1563,7 @@ static const struct amdgpu_ring_funcs
> uvd_v6_0_ring_vm_funcs = {
>          .get_wptr = uvd_v6_0_ring_get_wptr,
>          .set_wptr = uvd_v6_0_ring_set_wptr,
>          .emit_frame_size =
> -               6 + 6 + /* hdp flush / invalidate */
> +               6 + /* hdp invalidate */
>                  10 + /* uvd_v6_0_ring_emit_pipeline_sync */
>                  VI_FLUSH_GPU_TLB_NUM_WREG * 6 + 8 + /*
> uvd_v6_0_ring_emit_vm_flush */
>                  14 + 14, /* uvd_v6_0_ring_emit_fence x2 vm fence */
> @@ -1561,6 +1572,7 @@ static const struct amdgpu_ring_funcs
> uvd_v6_0_ring_vm_funcs = {
>          .emit_fence = uvd_v6_0_ring_emit_fence,
>          .emit_vm_flush = uvd_v6_0_ring_emit_vm_flush,
>          .emit_pipeline_sync = uvd_v6_0_ring_emit_pipeline_sync,
> +       .emit_hdp_flush = uvd_v6_0_ring_emit_hdp_flush,
>          .test_ring = uvd_v6_0_ring_test_ring,
>          .test_ib = amdgpu_uvd_ring_test_ib,
>          .insert_nop = amdgpu_ring_insert_nop,
> diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c
> b/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c
> index 2251db4048f5..b0de1e04093b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c
> @@ -1135,6 +1135,16 @@ static void uvd_v7_0_enc_ring_emit_fence(struct
> amdgpu_ring *ring, u64 addr,
>          amdgpu_ring_write(ring, HEVC_ENC_CMD_TRAP);
>  }
>
> +/**
> + * uvd_v7_0_ring_emit_hdp_flush - skip HDP flushing
> + *
> + * @ring: amdgpu_ring pointer
> + */
> +static void uvd_v7_0_ring_emit_hdp_flush(struct amdgpu_ring *ring)
> +{
> +       /* The firmware doesn't seem to like touching registers at this
> point. */
> +}
> +
>  /**
>   * uvd_v7_0_ring_test_ring - register write test
>   *
> @@ -1654,7 +1664,7 @@ static const struct amdgpu_ring_funcs
> uvd_v7_0_ring_vm_funcs = {
>          .get_wptr = uvd_v7_0_ring_get_wptr,
>          .set_wptr = uvd_v7_0_ring_set_wptr,
>          .emit_frame_size =
> -               6 + 6 + /* hdp flush / invalidate */
> +               6 + /* hdp invalidate */
>                  SOC15_FLUSH_GPU_TLB_NUM_WREG * 6 +
>                  SOC15_FLUSH_GPU_TLB_NUM_REG_WAIT * 8 +
>                  8 + /* uvd_v7_0_ring_emit_vm_flush */
> @@ -1663,6 +1673,7 @@ static const struct amdgpu_ring_funcs
> uvd_v7_0_ring_vm_funcs = {
>          .emit_ib = uvd_v7_0_ring_emit_ib,
>          .emit_fence = uvd_v7_0_ring_emit_fence,
>          .emit_vm_flush = uvd_v7_0_ring_emit_vm_flush,
> +       .emit_hdp_flush = uvd_v7_0_ring_emit_hdp_flush,
>          .test_ring = uvd_v7_0_ring_test_ring,
>          .test_ib = amdgpu_uvd_ring_test_ib,
>          .insert_nop = uvd_v7_0_ring_insert_nop,
> --
> 2.14.1
>
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