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SubjectRe: Re: [PATCH v7 11/11] media: hantro: Support NV12 on the G2 core
Hi Jernej,

On Tue, 19 Oct 2021 at 13:38, Jernej Škrabec <jernej.skrabec@gmail.com> wrote:
>
> Hi Andrzej!
>
> Dne petek, 15. oktober 2021 ob 19:19:47 CEST je Andrzej Pietrasiewicz
> napisal(a):
> > Hi Jernej,
> >
> > W dniu 14.10.2021 o 19:42, Jernej Škrabec pisze:
> > > Hi Andrzej!
> > >
> > > Dne sreda, 29. september 2021 ob 18:04:39 CEST je Andrzej Pietrasiewicz
> > > napisal(a):
> > >> The G2 decoder block produces NV12 4x4 tiled format (NV12_4L4).
> > >> Enable the G2 post-processor block, in order to produce regular NV12.
> > >>
> > >> The logic in hantro_postproc.c is leveraged to take care of allocating
> > >> the extra buffers and configure the post-processor, which is
> > >> significantly simpler than the one on the G1.
> > >
> > > Quick summary of discussion on LibreELEC Slack:
> > > When using NV12 format on Allwinner H6 variant of G2 (needs some driver
> > > changes), I get frames out of order. If I use native NV12 tiled format,
> frames
> > > are ordered correctly.
> > >
> > > Currently I'm not sure if this is issue with my changes or is this general
> > > issue.
> > >
> > > I would be grateful if anyone can test frame order with and without
> > > postprocessing enabled on imx8. Take some dynamic video with a lot of
> short
> > > scenes. It's pretty obvious when frames are out of order.
> > >
> >
> > I checked on imx8 and cannot observe any such artifacts.
>
> I finally found the issue. As you mentioned on Slack, register write order once
> already affected decoding. Well, it's the case again. I made hacky test and
> moved postproc enable call after output buffers are set and it worked. So, this
> is actually core quirk which is obviously fixed in newer variants.
>

Ugh, good catch.

What happens if you move all the calls to HANTRO_PP_REG_WRITE_S
(HANTRO_PP_REG_WRITE does a relaxed write)?

Or what happens if the HANTRO_PP_REG_WRITE(vpu, out_luma_base, dst_dma)
is moved to be done after all the other registers?

> This makes this series with minor adaptations completely working on H6. I see
> no reason not to merge whole series.
>

Do you have plans to submit your H6 work on top of this?

Thanks,
Ezequiel


> Thanks for testing.
>
> Best regards,
> Jernej
>
> >
> > Andrzej
> >
> > > However, given that frames themself are correctly decoded and without
> > > postprocessing in right order, that shouldn't block merging previous
> patches.
> > > I tried few different videos and frames were all decoded correctly.
> > >
> > > Best regards,
> > > Jernej
> > >
> > >>
> > >> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
> > >> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> > >> ---
> > >> .../staging/media/hantro/hantro_g2_vp9_dec.c | 6 ++--
> > >> drivers/staging/media/hantro/hantro_hw.h | 1 +
> > >> .../staging/media/hantro/hantro_postproc.c | 31 +++++++++++++++++++
> > >> drivers/staging/media/hantro/imx8m_vpu_hw.c | 11 +++++++
> > >> 4 files changed, 46 insertions(+), 3 deletions(-)
> > >>
> > >> diff --git a/drivers/staging/media/hantro/hantro_g2_vp9_dec.c b/drivers/
> > > staging/media/hantro/hantro_g2_vp9_dec.c
> > >> index 7f827b9f0133..1a26be72c878 100644
> > >> --- a/drivers/staging/media/hantro/hantro_g2_vp9_dec.c
> > >> +++ b/drivers/staging/media/hantro/hantro_g2_vp9_dec.c
> > >> @@ -152,7 +152,7 @@ static void config_output(struct hantro_ctx *ctx,
> > >> hantro_reg_write(ctx->dev, &g2_out_dis, 0);
> > >> hantro_reg_write(ctx->dev, &g2_output_format, 0);
> > >>
> > >> - luma_addr = vb2_dma_contig_plane_dma_addr(&dst->base.vb.vb2_buf,
> > > 0);
> > >> + luma_addr = hantro_get_dec_buf_addr(ctx, &dst->base.vb.vb2_buf);
> > >> hantro_write_addr(ctx->dev, G2_OUT_LUMA_ADDR, luma_addr);
> > >>
> > >> chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
> > >> @@ -191,7 +191,7 @@ static void config_ref(struct hantro_ctx *ctx,
> > >> hantro_reg_write(ctx->dev, &ref_reg->hor_scale, (refw << 14) /
> > > dst->vp9.width);
> > >> hantro_reg_write(ctx->dev, &ref_reg->ver_scale, (refh << 14) /
> > > dst->vp9.height);
> > >>
> > >> - luma_addr = vb2_dma_contig_plane_dma_addr(&buf->base.vb.vb2_buf,
> > > 0);
> > >> + luma_addr = hantro_get_dec_buf_addr(ctx, &buf->base.vb.vb2_buf);
> > >> hantro_write_addr(ctx->dev, ref_reg->y_base, luma_addr);
> > >>
> > >> chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
> > >> @@ -236,7 +236,7 @@ static void config_ref_registers(struct hantro_ctx
> *ctx,
> > >> config_ref(ctx, dst, &ref_regs[1], dec_params, dec_params-
> > >> golden_frame_ts);
> > >> config_ref(ctx, dst, &ref_regs[2], dec_params, dec_params-
> > >> alt_frame_ts);
> > >>
> > >> - mv_addr = vb2_dma_contig_plane_dma_addr(&mv_ref->base.vb.vb2_buf,
> > > 0) +
> > >> + mv_addr = hantro_get_dec_buf_addr(ctx, &mv_ref->base.vb.vb2_buf) +
> > >> mv_offset(ctx, dec_params);
> > >> hantro_write_addr(ctx->dev, G2_REF_MV_ADDR(0), mv_addr);
> > >>
> > >> diff --git a/drivers/staging/media/hantro/hantro_hw.h b/drivers/staging/
> > > media/hantro/hantro_hw.h
> > >> index 2961d399fd60..3d4a5dc1e6d5 100644
> > >> --- a/drivers/staging/media/hantro/hantro_hw.h
> > >> +++ b/drivers/staging/media/hantro/hantro_hw.h
> > >> @@ -274,6 +274,7 @@ extern const struct hantro_variant
> rk3399_vpu_variant;
> > >> extern const struct hantro_variant sama5d4_vdec_variant;
> > >>
> > >> extern const struct hantro_postproc_ops hantro_g1_postproc_ops;
> > >> +extern const struct hantro_postproc_ops hantro_g2_postproc_ops;
> > >>
> > >> extern const u32 hantro_vp8_dec_mc_filter[8][6];
> > >>
> > >> diff --git a/drivers/staging/media/hantro/hantro_postproc.c b/drivers/
> > > staging/media/hantro/hantro_postproc.c
> > >> index 4549aec08feb..79a66d001738 100644
> > >> --- a/drivers/staging/media/hantro/hantro_postproc.c
> > >> +++ b/drivers/staging/media/hantro/hantro_postproc.c
> > >> @@ -11,6 +11,7 @@
> > >> #include "hantro.h"
> > >> #include "hantro_hw.h"
> > >> #include "hantro_g1_regs.h"
> > >> +#include "hantro_g2_regs.h"
> > >>
> > >> #define HANTRO_PP_REG_WRITE(vpu, reg_name, val) \
> > >> { \
> > >> @@ -99,6 +100,21 @@ static void hantro_postproc_g1_enable(struct
> hantro_ctx
> > > *ctx)
> > >> HANTRO_PP_REG_WRITE(vpu, display_width, ctx->dst_fmt.width);
> > >> }
> > >>
> > >> +static void hantro_postproc_g2_enable(struct hantro_ctx *ctx)
> > >> +{
> > >> + struct hantro_dev *vpu = ctx->dev;
> > >> + struct vb2_v4l2_buffer *dst_buf;
> > >> + size_t chroma_offset = ctx->dst_fmt.width * ctx->dst_fmt.height;
> > >> + dma_addr_t dst_dma;
> > >> +
> > >> + dst_buf = hantro_get_dst_buf(ctx);
> > >> + dst_dma = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
> > >> +
> > >> + hantro_write_addr(vpu, G2_RS_OUT_LUMA_ADDR, dst_dma);
> > >> + hantro_write_addr(vpu, G2_RS_OUT_CHROMA_ADDR, dst_dma +
> > > chroma_offset);
> > >> + hantro_reg_write(vpu, &g2_out_rs_e, 1);
> > >> +}
> > >> +
> > >> void hantro_postproc_free(struct hantro_ctx *ctx)
> > >> {
> > >> struct hantro_dev *vpu = ctx->dev;
> > >> @@ -127,6 +143,9 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
> > >> if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_H264_SLICE)
> > >> buf_size += hantro_h264_mv_size(ctx->dst_fmt.width,
> > >> ctx-
> > >> dst_fmt.height);
> > >> + else if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_VP9_FRAME)
> > >> + buf_size += hantro_vp9_mv_size(ctx->dst_fmt.width,
> > >> + ctx-
> > >> dst_fmt.height);
> > >>
> > >> for (i = 0; i < num_buffers; ++i) {
> > >> struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
> > >> @@ -152,6 +171,13 @@ static void hantro_postproc_g1_disable(struct
> > > hantro_ctx *ctx)
> > >> HANTRO_PP_REG_WRITE_S(vpu, pipeline_en, 0x0);
> > >> }
> > >>
> > >> +static void hantro_postproc_g2_disable(struct hantro_ctx *ctx)
> > >> +{
> > >> + struct hantro_dev *vpu = ctx->dev;
> > >> +
> > >> + hantro_reg_write(vpu, &g2_out_rs_e, 0);
> > >> +}
> > >> +
> > >> void hantro_postproc_disable(struct hantro_ctx *ctx)
> > >> {
> > >> struct hantro_dev *vpu = ctx->dev;
> > >> @@ -172,3 +198,8 @@ const struct hantro_postproc_ops
> hantro_g1_postproc_ops
> > > = {
> > >> .enable = hantro_postproc_g1_enable,
> > >> .disable = hantro_postproc_g1_disable,
> > >> };
> > >> +
> > >> +const struct hantro_postproc_ops hantro_g2_postproc_ops = {
> > >> + .enable = hantro_postproc_g2_enable,
> > >> + .disable = hantro_postproc_g2_disable,
> > >> +};
> > >> diff --git a/drivers/staging/media/hantro/imx8m_vpu_hw.c b/drivers/
> staging/
> > > media/hantro/imx8m_vpu_hw.c
> > >> index 455a107ffb02..1a43f6fceef9 100644
> > >> --- a/drivers/staging/media/hantro/imx8m_vpu_hw.c
> > >> +++ b/drivers/staging/media/hantro/imx8m_vpu_hw.c
> > >> @@ -132,6 +132,14 @@ static const struct hantro_fmt imx8m_vpu_dec_fmts[]
> = {
> > >> },
> > >> };
> > >>
> > >> +static const struct hantro_fmt imx8m_vpu_g2_postproc_fmts[] = {
> > >> + {
> > >> + .fourcc = V4L2_PIX_FMT_NV12,
> > >> + .codec_mode = HANTRO_MODE_NONE,
> > >> + .postprocessed = true,
> > >> + },
> > >> +};
> > >> +
> > >> static const struct hantro_fmt imx8m_vpu_g2_dec_fmts[] = {
> > >> {
> > >> .fourcc = V4L2_PIX_FMT_NV12_4L4,
> > >> @@ -301,6 +309,9 @@ const struct hantro_variant imx8mq_vpu_g2_variant = {
> > >> .dec_offset = 0x0,
> > >> .dec_fmts = imx8m_vpu_g2_dec_fmts,
> > >> .num_dec_fmts = ARRAY_SIZE(imx8m_vpu_g2_dec_fmts),
> > >> + .postproc_fmts = imx8m_vpu_g2_postproc_fmts,
> > >> + .num_postproc_fmts = ARRAY_SIZE(imx8m_vpu_g2_postproc_fmts),
> > >> + .postproc_ops = &hantro_g2_postproc_ops,
> > >> .codec = HANTRO_HEVC_DECODER | HANTRO_VP9_DECODER,
> > >> .codec_ops = imx8mq_vpu_g2_codec_ops,
> > >> .init = imx8mq_vpu_hw_init,
> > >> --
> > >> 2.17.1
> > >>
> > >>
> > >
> > >
> >
> >
>
>

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