Subject: Re: [Patch v2 04/11] s5p-mfc: Support MFCv10.10 buffer requirements
To: Smitha T Murthy <smitha.t@samsung.com>,
        linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org,
        linux-kernel@vger.kernel.org
Cc: kyungmin.park@samsung.com, kamil@wypas.org, jtp.park@samsung.com,
        mchehab@kernel.org, pankaj.dubey@samsung.com, krzk@kernel.org,
        m.szyprowski@samsung.com, s.nawrocki@samsung.com
From: Andrzej Hajda <a.hajda@samsung.com>
Message-id: <b63d5b24-afeb-0571-1815-804233da9f41@samsung.com>
Date: Mon, 06 Mar 2017 15:48:29 +0100
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On 03.03.2017 10:07, Smitha T Murthy 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>
> ---
>  drivers/media/platform/s5p-mfc/regs-mfc-v10.h   |   19 +++++
>  drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c |   99 ++++++++++++++++++-----
>  drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.h |    2 +
>  3 files changed, 99 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 bd671a5..dafcf9d 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 5f0da0b..d4c75eb 100644
> --- a/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c
> +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c
> @@ -45,6 +45,8 @@
>  
>  #define IS_MFCV6_V2(dev) (!IS_MFCV7_PLUS(dev) && dev->fw_ver == MFC_FW_V2)
>  
> +#define calc_param(value, align) (DIV_ROUND_UP(value, align) * align)

I think it is functionally the same as ALIGN, please drop it and use
ALIGN instead.

> +
>  /* Allocate temporary buffers for decoding */
>  static int s5p_mfc_alloc_dec_temp_buffers_v6(struct s5p_mfc_ctx *ctx)
>  {
> @@ -64,6 +66,7 @@ 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 +77,9 @@ 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)) {
> +			ctx->tmv_buffer_size = 0;
> +		} 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 +87,36 @@ 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(calc_param((mb_width * 16), 64)
> +					* calc_param((mb_height * 16), 32)
> +						+ 64, 64);
ALIGN is not necessary here, as argument is already aligned.
> +				ctx->chroma_dpb_size =
> +					ALIGN(calc_param((mb_width * 16), 64)
> +							* (mb_height * 8)
> +							+ 64, 64);

ditto

> +			} else {
> +				ctx->luma_dpb_size =
> +					ALIGN(calc_param((lcu_width * 32), 64)
> +					* calc_param((lcu_height * 32), 32)
> +						+ 64, 64);
ditto
> +				ctx->chroma_dpb_size =
> +					ALIGN(calc_param((lcu_width * 32), 64)
> +							* (lcu_height * 16)
> +							+ 64, 64);

ditto

> +			}
> +		} 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 +225,8 @@ 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 +249,9 @@ 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 +268,10 @@ 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,
> @@ -395,13 +431,15 @@ 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
> +			ctx->mv_size = ALIGN(ctx->mv_size, 32);
> +		} else {
>  			ctx->mv_size = S5P_MFC_DEC_MV_SIZE_V6(ctx->img_width,
>  					ctx->img_height);
> -		ctx->mv_size = ALIGN(ctx->mv_size, 16);
> +			ctx->mv_size = ALIGN(ctx->mv_size, 16);

Already aligned

> +		}
>  	} else {
>  		ctx->mv_size = 0;
>  	}
> @@ -598,15 +636,34 @@ 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)
>  
>  /* Definition */
>  #define ENC_MULTI_SLICE_MB_MAX		((1 << 30) - 1)