Re: [Patch v5 04/12] [media] s5p-mfc: Support MFCv10.10 buffer requirements

[Kamil Debski <kamil@wypas.org>]

Hi,

Please find my comments inline.

On 19 June 2017 at 07:10, Smitha T Murthy <smitha.t@samsung.com> wrote:
> Aligning the luma_dpb_size, chroma_dpb_size, mv_size and me_buffer_size
> for MFCv10.10.
>
> Signed-off-by: Smitha T Murthy <smitha.t@samsung.com>
> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
> ---
>  drivers/media/platform/s5p-mfc/regs-mfc-v10.h   | 19 +++++
>  drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c | 95 +++++++++++++++++++------
>  drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.h |  2 +
>  3 files changed, 95 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/media/platform/s5p-mfc/regs-mfc-v10.h b/drivers/media/platform/s5p-mfc/regs-mfc-v10.h
> index 1ca09d6..3f0dab3 100644
> --- a/drivers/media/platform/s5p-mfc/regs-mfc-v10.h
> +++ b/drivers/media/platform/s5p-mfc/regs-mfc-v10.h
> @@ -32,5 +32,24 @@
>  #define MFC_VERSION_V10                0xA0
>  #define MFC_NUM_PORTS_V10      1
>
> +/* MFCv10 codec defines*/
> +#define S5P_FIMV_CODEC_HEVC_ENC         26
> +
> +/* Encoder buffer size for MFC v10.0 */
> +#define ENC_V100_BASE_SIZE(x, y) \
> +       (((x + 3) * (y + 3) * 8) \
> +       +  ((y * 64) + 1280) * DIV_ROUND_UP(x, 8))
> +
> +#define ENC_V100_H264_ME_SIZE(x, y) \
> +       (ENC_V100_BASE_SIZE(x, y) \
> +       + (DIV_ROUND_UP(x * y, 64) * 32))
> +
> +#define ENC_V100_MPEG4_ME_SIZE(x, y) \
> +       (ENC_V100_BASE_SIZE(x, y) \
> +       + (DIV_ROUND_UP(x * y, 128) * 16))
> +
> +#define ENC_V100_VP8_ME_SIZE(x, y) \
> +       ENC_V100_BASE_SIZE(x, y)
> +
>  #endif /*_REGS_MFC_V10_H*/
>
> diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c b/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c
> index f1a8c53..83ea733 100644
> --- a/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c
> +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c
> @@ -64,6 +64,7 @@ static int s5p_mfc_alloc_codec_buffers_v6(struct s5p_mfc_ctx *ctx)
>  {
>         struct s5p_mfc_dev *dev = ctx->dev;
>         unsigned int mb_width, mb_height;
> +       unsigned int lcu_width = 0, lcu_height = 0;
>         int ret;
>
>         mb_width = MB_WIDTH(ctx->img_width);
> @@ -74,7 +75,9 @@ static int s5p_mfc_alloc_codec_buffers_v6(struct s5p_mfc_ctx *ctx)
>                           ctx->luma_size, ctx->chroma_size, ctx->mv_size);
>                 mfc_debug(2, "Totals bufs: %d\n", ctx->total_dpb_count);
>         } else if (ctx->type == MFCINST_ENCODER) {
> -               if (IS_MFCV8_PLUS(dev))
> +               if (IS_MFCV10(dev)) {IZE_V10  (15 * SZ_1K)
> +                       ctx->tmv_buffer_size = 0;

It would look much better to surround the above with braces, even
though it's only a single line.

> +               } else if (IS_MFCV8_PLUS(dev))
>                         ctx->tmv_buffer_size = S5P_FIMV_NUM_TMV_BUFFERS_V6 *
>                         ALIGN(S5P_FIMV_TMV_BUFFER_SIZE_V8(mb_width, mb_height),
>                         S5P_FIMV_TMV_BUFFER_ALIGN_V6);
> @@ -82,13 +85,36 @@ static int s5p_mfc_alloc_codec_buffers_v6(struct s5p_mfc_ctx *ctx)
>                         ctx->tmv_buffer_size = S5P_FIMV_NUM_TMV_BUFFERS_V6 *
>                         ALIGN(S5P_FIMV_TMV_BUFFER_SIZE_V6(mb_width, mb_height),
>                         S5P_FIMV_TMV_BUFFER_ALIGN_V6);
> -
> -               ctx->luma_dpb_size = ALIGN((mb_width * mb_height) *
> -                               S5P_FIMV_LUMA_MB_TO_PIXEL_V6,
> -                               S5P_FIMV_LUMA_DPB_BUFFER_ALIGN_V6);
> -               ctx->chroma_dpb_size = ALIGN((mb_width * mb_height) *
> -                               S5P_FIMV_CHROMA_MB_TO_PIXEL_V6,
> -                               S5P_FIMV_CHROMA_DPB_BUFFER_ALIGN_V6);
> +               if (IS_MFCV10(dev)) {
> +                       lcu_width = enc_lcu_width(ctx->img_width);
> +                       lcu_height = enc_lcu_height(ctx->img_height);
> +                       if (ctx->codec_mode != S5P_FIMV_CODEC_HEVC_ENC) {
> +                               ctx->luma_dpb_size =
> +                                       ALIGN((mb_width * 16), 64)
> +                                       * ALIGN((mb_height * 16), 32)
> +                                               + 64;
> +                               ctx->chroma_dpb_size =
> +                                       ALIGN((mb_width * 16), 64)
> +                                                       * (mb_height * 8)
> +                                                       + 64;
> +                       } else {
> +                               ctx->luma_dpb_size =
> +                                       ALIGN((lcu_width * 32), 64)
> +                                       * ALIGN((lcu_height * 32), 32)
> +                                               + 64;
> +                               ctx->chroma_dpb_size =
> +                                       ALIGN((lcu_width * 32), 64)
> +                                                       * (lcu_height * 16)
> +                                                       + 64;
> +                       }
> +               } else {
> +                       ctx->luma_dpb_size = ALIGN((mb_width * mb_height) *
> +                                       S5P_FIMV_LUMA_MB_TO_PIXEL_V6,
> +                                       S5P_FIMV_LUMA_DPB_BUFFER_ALIGN_V6);
> +                       ctx->chroma_dpb_size = ALIGN((mb_width * mb_height) *
> +                                       S5P_FIMV_CHROMA_MB_TO_PIXEL_V6,
> +                                       S5P_FIMV_CHROMA_DPB_BUFFER_ALIGN_V6);
> +               }
>                 if (IS_MFCV8_PLUS(dev))
>                         ctx->me_buffer_size = ALIGN(S5P_FIMV_ME_BUFFER_SIZE_V8(
>                                                 ctx->img_width, ctx->img_height,
> @@ -197,6 +223,8 @@ static int s5p_mfc_alloc_codec_buffers_v6(struct s5p_mfc_ctx *ctx)
>         case S5P_MFC_CODEC_H264_ENC:
>                 if (IS_MFCV10(dev)) {
>                         mfc_debug(2, "Use min scratch buffer size\n");
> +                       ctx->me_buffer_size =
> +                       ALIGN(ENC_V100_H264_ME_SIZE(mb_width, mb_height), 16);
>                 } else if (IS_MFCV8_PLUS(dev))
>                         ctx->scratch_buf_size =
>                                 S5P_FIMV_SCRATCH_BUF_SIZE_H264_ENC_V8(
> @@ -219,6 +247,9 @@ static int s5p_mfc_alloc_codec_buffers_v6(struct s5p_mfc_ctx *ctx)
>         case S5P_MFC_CODEC_H263_ENC:
>                 if (IS_MFCV10(dev)) {
>                         mfc_debug(2, "Use min scratch buffer size\n");
> +                       ctx->me_buffer_size =
> +                               ALIGN(ENC_V100_MPEG4_ME_SIZE(mb_width,
> +                                                       mb_height), 16);
>                 } else
>                         ctx->scratch_buf_size =
>                                 S5P_FIMV_SCRATCH_BUF_SIZE_MPEG4_ENC_V6(
> @@ -235,7 +266,10 @@ static int s5p_mfc_alloc_codec_buffers_v6(struct s5p_mfc_ctx *ctx)
>         case S5P_MFC_CODEC_VP8_ENC:
>                 if (IS_MFCV10(dev)) {
>                         mfc_debug(2, "Use min scratch buffer size\n");
> -                       } else if (IS_MFCV8_PLUS(dev))
> +                       ctx->me_buffer_size =
> +                               ALIGN(ENC_V100_VP8_ME_SIZE(mb_width, mb_height),
> +                                               16);
> +               } else if (IS_MFCV8_PLUS(dev))
>                         ctx->scratch_buf_size =
>                                 S5P_FIMV_SCRATCH_BUF_SIZE_VP8_ENC_V8(
>                                         mb_width,
> @@ -393,13 +427,13 @@ static void s5p_mfc_dec_calc_dpb_size_v6(struct s5p_mfc_ctx *ctx)
>
>         if (ctx->codec_mode == S5P_MFC_CODEC_H264_DEC ||
>                         ctx->codec_mode == S5P_MFC_CODEC_H264_MVC_DEC) {
> -               if (IS_MFCV10(dev))
> +               if (IS_MFCV10(dev)) {
>                         ctx->mv_size = S5P_MFC_DEC_MV_SIZE_V10(ctx->img_width,
>                                         ctx->img_height);
> -               else
> +               } else {
>                         ctx->mv_size = S5P_MFC_DEC_MV_SIZE_V6(ctx->img_width,
>                                         ctx->img_height);
> -               ctx->mv_size = ALIGN(ctx->mv_size, 16);
> +               }
>         } else {
>                 ctx->mv_size = 0;
>         }
> @@ -596,15 +630,34 @@ static int s5p_mfc_set_enc_ref_buffer_v6(struct s5p_mfc_ctx *ctx)
>
>         mfc_debug(2, "Buf1: %p (%d)\n", (void *)buf_addr1, buf_size1);
>
> -       for (i = 0; i < ctx->pb_count; i++) {
> -               writel(buf_addr1, mfc_regs->e_luma_dpb + (4 * i));
> -               buf_addr1 += ctx->luma_dpb_size;
> -               writel(buf_addr1, mfc_regs->e_chroma_dpb + (4 * i));
> -               buf_addr1 += ctx->chroma_dpb_size;
> -               writel(buf_addr1, mfc_regs->e_me_buffer + (4 * i));
> -               buf_addr1 += ctx->me_buffer_size;
> -               buf_size1 -= (ctx->luma_dpb_size + ctx->chroma_dpb_size +
> -                       ctx->me_buffer_size);
> +       if (IS_MFCV10(dev)) {
> +               /* start address of per buffer is aligned */
> +               for (i = 0; i < ctx->pb_count; i++) {
> +                       writel(buf_addr1, mfc_regs->e_luma_dpb + (4 * i));
> +                       buf_addr1 += ctx->luma_dpb_size;
> +                       buf_size1 -= ctx->luma_dpb_size;
> +               }
> +               for (i = 0; i < ctx->pb_count; i++) {
> +                       writel(buf_addr1, mfc_regs->e_chroma_dpb + (4 * i));
> +                       buf_addr1 += ctx->chroma_dpb_size;
> +                       buf_size1 -= ctx->chroma_dpb_size;
> +               }
> +               for (i = 0; i < ctx->pb_count; i++) {
> +                       writel(buf_addr1, mfc_regs->e_me_buffer + (4 * i));
> +                       buf_addr1 += ctx->me_buffer_size;
> +                       buf_size1 -= ctx->me_buffer_size;
> +               }
> +       } else {
> +               for (i = 0; i < ctx->pb_count; i++) {
> +                       writel(buf_addr1, mfc_regs->e_luma_dpb + (4 * i));
> +                       buf_addr1 += ctx->luma_dpb_size;
> +                       writel(buf_addr1, mfc_regs->e_chroma_dpb + (4 * i));
> +                       buf_addr1 += ctx->chroma_dpb_size;
> +                       writel(buf_addr1, mfc_regs->e_me_buffer + (4 * i));
> +                       buf_addr1 += ctx->me_buffer_size;
> +                       buf_size1 -= (ctx->luma_dpb_size + ctx->chroma_dpb_size
> +                                       + ctx->me_buffer_size);
> +               }
>         }
>
>         writel(buf_addr1, mfc_regs->e_scratch_buffer_addr);
> diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.h b/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.h
> index 021b8db..975bbc5 100644
> --- a/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.h
> +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.h
> @@ -26,6 +26,8 @@
>                                         (((MB_HEIGHT(y)+1)/2)*2) * 64 + 128)
>  #define S5P_MFC_DEC_MV_SIZE_V10(x, y)  (MB_WIDTH(x) * \
>                                         (((MB_HEIGHT(y)+1)/2)*2) * 64 + 512)
> +#define enc_lcu_width(x_size)          DIV_ROUND_UP(x_size, 32)
> +#define enc_lcu_height(y_size)         DIV_ROUND_UP(y_size, 32)

Why is this in lower case? Maybe S5P_MFC_LCU_WIDTH/HEIGHT would be better?

>
>  /* Definition */
>  #define ENC_MULTI_SLICE_MB_MAX         ((1 << 30) - 1)
> --
> 2.7.4
>

Apart from the above, it looks good to me.

Acked-by: Kamil Debski <kamil@wypas.org>

Best wishes,
Kamil Debski