Re: [PATCH] media: verisilicon: Stop allocate mv and rfc buffers inside frame buffers

[Benjamin Gaignard <benjamin.gaignard@collabora.com>]

Le 29/04/2026 à 20:13, Nicolas Dufresne a écrit :
> Le lundi 16 mars 2026 à 11:37 -0400, Nicolas Dufresne a écrit :
>> Hi,
>>
>> Le jeudi 12 mars 2026 à 18:35 +0100, Benjamin Gaignard a écrit :
>>> Until now we reserve the space needed for motion vectors and reference
>>> frame compression at the end of the frame buffer.
>>> This method was convenient but won't fit when we will introduce secure
>>> data path because we will want to protect YUV data but not motion vectors
>>> or compression data.
>>>
>>> This patch disentanglement mv and rfc from frame buffers by allocating
>>> distinct buffers for each purpose.
>>>
>>> Tested on imx8mq for VP8, VP9, H264 and H265 codecs.
>> What did you test exactly ? When I check the RDC knobs on imx8mq, there is no
>> subdivision of the domain. So when you run in policy 2 (using the RDC and set
>> the VPU domain as secure read/write) these buffers effectively need to be inside
>> the secure ranges, and this is what I have running downstream at the moment (not
>> ready for upstreaming yet). To be more flexibly, and subdivides the rules within
>> an IP, policy 1 is needed, meaning you need to protect the IP register range,
>> and clearly we don't have that upstream since that imply passing the register
>> data over to the TEE. So with that justification, this change seems like a bit
>> early.
>>
>> The separation seems wanted in the more general case, but your implementation
>> does not take advantage of it. Notably, this driver allocates the same number of
>> reference as there is capture buffers. Both allocation pool endup too big due to
>> V4L2 limitations, but if you look at MTK, you can see they made the effort to
>> limit the number of auxiliary buffers. Perhaps leveraging the separation would
>> make this patch a bit more acceptable to me.
>
> I haven't received any feedback on this. Are we going to try and limit the
> number of auxiliary buffer to the number of reference (or per codec maximum) ?

For sure not is this patch but that could be done after.

Benjamin

>
> Nicolas
>
>> regards,
>> Nicolas
>>
>>> Tested on rk3588 for AV1.
>>> All fluster scores are remain the sames.
>>>
>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>>> ---
>>> Note: This patch depends on "media: verisilicon: Create AV1 helper library"
>>> version 2
>>>
>>>   drivers/media/platform/verisilicon/hantro.h   |  28 +-
>>>   .../media/platform/verisilicon/hantro_av1.c   |   7 -
>>>   .../media/platform/verisilicon/hantro_av1.h   |   1 -
>>>   .../media/platform/verisilicon/hantro_g2.c    |  36 --
>>>   .../platform/verisilicon/hantro_g2_hevc_dec.c |  65 ++--
>>>   .../platform/verisilicon/hantro_g2_vp9_dec.c  |  12 +-
>>>   .../media/platform/verisilicon/hantro_hevc.c  |  38 ++-
>>>   .../media/platform/verisilicon/hantro_hw.h    | 103 +-----
>>>   .../platform/verisilicon/hantro_postproc.c    |  29 +-
>>>   .../media/platform/verisilicon/hantro_v4l2.c  | 314 ++++++++++++++++--
>>>   .../verisilicon/rockchip_vpu981_hw_av1_dec.c  |  16 +-
>>>   11 files changed, 388 insertions(+), 261 deletions(-)
>>>
>>> diff --git a/drivers/media/platform/verisilicon/hantro.h
>>> b/drivers/media/platform/verisilicon/hantro.h
>>> index 0353de154a1e..daee5b95480c 100644
>>> --- a/drivers/media/platform/verisilicon/hantro.h
>>> +++ b/drivers/media/platform/verisilicon/hantro.h
>>> @@ -31,6 +31,9 @@ struct hantro_ctx;
>>>   struct hantro_codec_ops;
>>>   struct hantro_postproc_ops;
>>>   
>>> +#define MAX_MV_BUFFERS	MAX_POSTPROC_BUFFERS
>>> +#define MAX_RFC_BUFFERS	MAX_POSTPROC_BUFFERS
>>> +
>>>   #define HANTRO_JPEG_ENCODER	BIT(0)
>>>   #define HANTRO_ENCODERS		0x0000ffff
>>>   #define HANTRO_MPEG2_DECODER	BIT(16)
>>> @@ -237,6 +240,9 @@ struct hantro_dev {
>>>    * @need_postproc:	Set to true if the bitstream features require to
>>>    *			use the post-processor.
>>>    *
>>> + * @dec_mv:		motion vectors buffers for the context.
>>> + * @dec_rfc:		reference frame compression buffers for the context.
>>> + *
>>>    * @codec_ops:		Set of operations related to codec mode.
>>>    * @postproc:		Post-processing context.
>>>    * @h264_dec:		H.264-decoding context.
>>> @@ -264,6 +270,9 @@ struct hantro_ctx {
>>>   	int jpeg_quality;
>>>   	int bit_depth;
>>>   
>>> +	struct hantro_aux_buf dec_mv[MAX_MV_BUFFERS];
>>> +	struct hantro_aux_buf dec_rfc[MAX_RFC_BUFFERS];
>>> +
>>>   	const struct hantro_codec_ops *codec_ops;
>>>   	struct hantro_postproc_ctx postproc;
>>>   	bool need_postproc;
>>> @@ -329,19 +338,29 @@ struct hantro_postproc_regs {
>>>   	struct hantro_reg input_height_ext;
>>>   };
>>>   
>>> +struct hantro_hevc_decoded_buffer_info {
>>> +	/* Info needed when the decoded frame serves as a reference frame. */
>>> +	s32 poc;
>>> +	dma_addr_t luma_addr;
>>> +	dma_addr_t chroma_addr;
>>> +	dma_addr_t mv_addr;
>>> +	dma_addr_t rfc_luma_addr;
>>> +	dma_addr_t rfc_chroma_addr;
>>> +};
>>> +
>>>   struct hantro_vp9_decoded_buffer_info {
>>>   	/* Info needed when the decoded frame serves as a reference frame. */
>>>   	unsigned short width;
>>>   	unsigned short height;
>>>   	size_t chroma_offset;
>>> -	size_t mv_offset;
>>> +	dma_addr_t mv_addr;
>>>   	u32 bit_depth : 4;
>>>   };
>>>   
>>>   struct hantro_av1_decoded_buffer_info {
>>>   	/* Info needed when the decoded frame serves as a reference frame. */
>>>   	size_t chroma_offset;
>>> -	size_t mv_offset;
>>> +	dma_addr_t mv_addr;
>>>   };
>>>   
>>>   struct hantro_decoded_buffer {
>>> @@ -351,6 +370,7 @@ struct hantro_decoded_buffer {
>>>   	union {
>>>   		struct hantro_vp9_decoded_buffer_info vp9;
>>>   		struct hantro_av1_decoded_buffer_info av1;
>>> +		struct hantro_hevc_decoded_buffer_info hevc;
>>>   	};
>>>   };
>>>   
>>> @@ -507,4 +527,8 @@ void hantro_postproc_free(struct hantro_ctx *ctx);
>>>   int hanto_postproc_enum_framesizes(struct hantro_ctx *ctx,
>>>   				   struct v4l2_frmsizeenum *fsize);
>>>   
>>> +dma_addr_t hantro_mv_get_buf_addr(struct hantro_ctx *ctx, int index);
>>> +dma_addr_t hantro_rfc_get_luma_buf_addr(struct hantro_ctx *ctx, int index);
>>> +dma_addr_t hantro_rfc_get_chroma_buf_addr(struct hantro_ctx *ctx, int index);
>>> +
>>>   #endif /* HANTRO_H_ */
>>> diff --git a/drivers/media/platform/verisilicon/hantro_av1.c
>>> b/drivers/media/platform/verisilicon/hantro_av1.c
>>> index 5a51ac877c9c..3a80a7994f67 100644
>>> --- a/drivers/media/platform/verisilicon/hantro_av1.c
>>> +++ b/drivers/media/platform/verisilicon/hantro_av1.c
>>> @@ -222,13 +222,6 @@ size_t hantro_av1_luma_size(struct hantro_ctx *ctx)
>>>   	return ctx->ref_fmt.plane_fmt[0].bytesperline * ctx->ref_fmt.height;
>>>   }
>>>   
>>> -size_t hantro_av1_chroma_size(struct hantro_ctx *ctx)
>>> -{
>>> -	size_t cr_offset = hantro_av1_luma_size(ctx);
>>> -
>>> -	return ALIGN((cr_offset * 3) / 2, 64);
>>> -}
>>> -
>>>   static void hantro_av1_tiles_free(struct hantro_ctx *ctx)
>>>   {
>>>   	struct hantro_dev *vpu = ctx->dev;
>>> diff --git a/drivers/media/platform/verisilicon/hantro_av1.h
>>> b/drivers/media/platform/verisilicon/hantro_av1.h
>>> index 4e2122b95cdd..330f7938d097 100644
>>> --- a/drivers/media/platform/verisilicon/hantro_av1.h
>>> +++ b/drivers/media/platform/verisilicon/hantro_av1.h
>>> @@ -41,7 +41,6 @@ int hantro_av1_get_order_hint(struct hantro_ctx *ctx, int
>>> ref);
>>>   int hantro_av1_frame_ref(struct hantro_ctx *ctx, u64 timestamp);
>>>   void hantro_av1_clean_refs(struct hantro_ctx *ctx);
>>>   size_t hantro_av1_luma_size(struct hantro_ctx *ctx);
>>> -size_t hantro_av1_chroma_size(struct hantro_ctx *ctx);
>>>   void hantro_av1_exit(struct hantro_ctx *ctx);
>>>   int hantro_av1_init(struct hantro_ctx *ctx);
>>>   int hantro_av1_prepare_run(struct hantro_ctx *ctx);
>>> diff --git a/drivers/media/platform/verisilicon/hantro_g2.c
>>> b/drivers/media/platform/verisilicon/hantro_g2.c
>>> index 318673b66da8..4ae7df53dcb1 100644
>>> --- a/drivers/media/platform/verisilicon/hantro_g2.c
>>> +++ b/drivers/media/platform/verisilicon/hantro_g2.c
>>> @@ -99,39 +99,3 @@ size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx)
>>>   {
>>>   	return ctx->ref_fmt.plane_fmt[0].bytesperline *	ctx-
>>>> ref_fmt.height;
>>>   }
>>> -
>>> -size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx)
>>> -{
>>> -	size_t cr_offset = hantro_g2_chroma_offset(ctx);
>>> -
>>> -	return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
>>> -}
>>> -
>>> -static size_t hantro_g2_mv_size(struct hantro_ctx *ctx)
>>> -{
>>> -	const struct hantro_hevc_dec_ctrls *ctrls = &ctx->hevc_dec.ctrls;
>>> -	const struct v4l2_ctrl_hevc_sps *sps = ctrls->sps;
>>> -	unsigned int pic_width_in_ctbs, pic_height_in_ctbs;
>>> -	unsigned int max_log2_ctb_size;
>>> -
>>> -	max_log2_ctb_size = sps->log2_min_luma_coding_block_size_minus3 + 3 +
>>> -			    sps->log2_diff_max_min_luma_coding_block_size;
>>> -	pic_width_in_ctbs = (sps->pic_width_in_luma_samples +
>>> -			    (1 << max_log2_ctb_size) - 1) >>
>>> max_log2_ctb_size;
>>> -	pic_height_in_ctbs = (sps->pic_height_in_luma_samples + (1 <<
>>> max_log2_ctb_size) - 1)
>>> -			     >> max_log2_ctb_size;
>>> -
>>> -	return pic_width_in_ctbs * pic_height_in_ctbs * (1 << (2 *
>>> (max_log2_ctb_size - 4))) * 16;
>>> -}
>>> -
>>> -size_t hantro_g2_luma_compress_offset(struct hantro_ctx *ctx)
>>> -{
>>> -	return hantro_g2_motion_vectors_offset(ctx) +
>>> -	       hantro_g2_mv_size(ctx);
>>> -}
>>> -
>>> -size_t hantro_g2_chroma_compress_offset(struct hantro_ctx *ctx)
>>> -{
>>> -	return hantro_g2_luma_compress_offset(ctx) +
>>> -	       hantro_hevc_luma_compressed_size(ctx->dst_fmt.width, ctx-
>>>> dst_fmt.height);
>>> -}
>>> diff --git a/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
>>> b/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
>>> index e8c2e83379de..5240cf9b5f58 100644
>>> --- a/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
>>> +++ b/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
>>> @@ -377,15 +377,9 @@ static int set_ref(struct hantro_ctx *ctx)
>>>   	const struct v4l2_ctrl_hevc_pps *pps = ctrls->pps;
>>>   	const struct v4l2_ctrl_hevc_decode_params *decode_params = ctrls-
>>>> decode_params;
>>>   	const struct v4l2_hevc_dpb_entry *dpb = decode_params->dpb;
>>> -	dma_addr_t luma_addr, chroma_addr, mv_addr = 0;
>>> -	dma_addr_t compress_luma_addr, compress_chroma_addr = 0;
>>>   	struct hantro_dev *vpu = ctx->dev;
>>>   	struct vb2_v4l2_buffer *vb2_dst;
>>> -	struct hantro_decoded_buffer *dst;
>>> -	size_t cr_offset = hantro_g2_chroma_offset(ctx);
>>> -	size_t mv_offset = hantro_g2_motion_vectors_offset(ctx);
>>> -	size_t compress_luma_offset = hantro_g2_luma_compress_offset(ctx);
>>> -	size_t compress_chroma_offset =
>>> hantro_g2_chroma_compress_offset(ctx);
>>> +	struct hantro_decoded_buffer *ref;
>>>   	u32 max_ref_frames;
>>>   	u16 dpb_longterm_e;
>>>   	static const struct hantro_reg cur_poc[] = {
>>> @@ -453,50 +447,37 @@ static int set_ref(struct hantro_ctx *ctx)
>>>   	dpb_longterm_e = 0;
>>>   	for (i = 0; i < decode_params->num_active_dpb_entries &&
>>>   	     i < (V4L2_HEVC_DPB_ENTRIES_NUM_MAX - 1); i++) {
>>> -		luma_addr = hantro_hevc_get_ref_buf(ctx,
>>> dpb[i].pic_order_cnt_val);
>>> -		if (!luma_addr)
>>> +		vb2_dst = hantro_hevc_get_ref_buf(ctx,
>>> dpb[i].pic_order_cnt_val);
>>> +		if (!vb2_dst)
>>>   			return -ENOMEM;
>>>   
>>> -		chroma_addr = luma_addr + cr_offset;
>>> -		mv_addr = luma_addr + mv_offset;
>>> -		compress_luma_addr = luma_addr + compress_luma_offset;
>>> -		compress_chroma_addr = luma_addr + compress_chroma_offset;
>>> -
>>>   		if (dpb[i].flags & V4L2_HEVC_DPB_ENTRY_LONG_TERM_REFERENCE)
>>>   			dpb_longterm_e |= BIT(V4L2_HEVC_DPB_ENTRIES_NUM_MAX -
>>> 1 - i);
>>>   
>>> -		hantro_write_addr(vpu, G2_REF_LUMA_ADDR(i), luma_addr);
>>> -		hantro_write_addr(vpu, G2_REF_CHROMA_ADDR(i), chroma_addr);
>>> -		hantro_write_addr(vpu, G2_REF_MV_ADDR(i), mv_addr);
>>> -		hantro_write_addr(vpu, G2_REF_COMP_LUMA_ADDR(i),
>>> compress_luma_addr);
>>> -		hantro_write_addr(vpu, G2_REF_COMP_CHROMA_ADDR(i),
>>> compress_chroma_addr);
>>> +		ref = vb2_to_hantro_decoded_buf(&vb2_dst->vb2_buf);
>>> +		hantro_write_addr(vpu, G2_REF_LUMA_ADDR(i), ref-
>>>> hevc.luma_addr);
>>> +		hantro_write_addr(vpu, G2_REF_CHROMA_ADDR(i), ref-
>>>> hevc.chroma_addr);
>>> +		hantro_write_addr(vpu, G2_REF_MV_ADDR(i), ref->hevc.mv_addr);
>>> +		hantro_write_addr(vpu, G2_REF_COMP_LUMA_ADDR(i), ref-
>>>> hevc.rfc_luma_addr);
>>> +		hantro_write_addr(vpu, G2_REF_COMP_CHROMA_ADDR(i), ref-
>>>> hevc.rfc_chroma_addr);
>>>   	}
>>>   
>>> -	vb2_dst = hantro_get_dst_buf(ctx);
>>> -	dst = vb2_to_hantro_decoded_buf(&vb2_dst->vb2_buf);
>>> -	luma_addr = hantro_get_dec_buf_addr(ctx, &dst->base.vb.vb2_buf);
>>> -	if (!luma_addr)
>>> -		return -ENOMEM;
>>> -
>>> -	if (hantro_hevc_add_ref_buf(ctx, decode_params->pic_order_cnt_val,
>>> luma_addr))
>>> +	vb2_dst = hantro_hevc_add_ref_buf(ctx, decode_params-
>>>> pic_order_cnt_val);
>>> +	if (!vb2_dst)
>>>   		return -EINVAL;
>>>   
>>> -	chroma_addr = luma_addr + cr_offset;
>>> -	mv_addr = luma_addr + mv_offset;
>>> -	compress_luma_addr = luma_addr + compress_luma_offset;
>>> -	compress_chroma_addr = luma_addr + compress_chroma_offset;
>>> -
>>> -	hantro_write_addr(vpu, G2_REF_LUMA_ADDR(i), luma_addr);
>>> -	hantro_write_addr(vpu, G2_REF_CHROMA_ADDR(i), chroma_addr);
>>> -	hantro_write_addr(vpu, G2_REF_MV_ADDR(i), mv_addr);
>>> -	hantro_write_addr(vpu, G2_REF_COMP_LUMA_ADDR(i), compress_luma_addr);
>>> -	hantro_write_addr(vpu, G2_REF_COMP_CHROMA_ADDR(i++),
>>> compress_chroma_addr);
>>> -
>>> -	hantro_write_addr(vpu, G2_OUT_LUMA_ADDR, luma_addr);
>>> -	hantro_write_addr(vpu, G2_OUT_CHROMA_ADDR, chroma_addr);
>>> -	hantro_write_addr(vpu, G2_OUT_MV_ADDR, mv_addr);
>>> -	hantro_write_addr(vpu, G2_OUT_COMP_LUMA_ADDR, compress_luma_addr);
>>> -	hantro_write_addr(vpu, G2_OUT_COMP_CHROMA_ADDR,
>>> compress_chroma_addr);
>>> +	ref = vb2_to_hantro_decoded_buf(&vb2_dst->vb2_buf);
>>> +	hantro_write_addr(vpu, G2_REF_LUMA_ADDR(i), ref->hevc.luma_addr);
>>> +	hantro_write_addr(vpu, G2_REF_CHROMA_ADDR(i), ref->hevc.chroma_addr);
>>> +	hantro_write_addr(vpu, G2_REF_MV_ADDR(i), ref->hevc.mv_addr);
>>> +	hantro_write_addr(vpu, G2_REF_COMP_LUMA_ADDR(i), ref-
>>>> hevc.rfc_luma_addr);
>>> +	hantro_write_addr(vpu, G2_REF_COMP_CHROMA_ADDR(i++), ref-
>>>> hevc.rfc_chroma_addr);
>>> +
>>> +	hantro_write_addr(vpu, G2_OUT_LUMA_ADDR, ref->hevc.luma_addr);
>>> +	hantro_write_addr(vpu, G2_OUT_CHROMA_ADDR, ref->hevc.chroma_addr);
>>> +	hantro_write_addr(vpu, G2_OUT_MV_ADDR, ref->hevc.mv_addr);
>>> +	hantro_write_addr(vpu, G2_OUT_COMP_LUMA_ADDR, ref-
>>>> hevc.rfc_luma_addr);
>>> +	hantro_write_addr(vpu, G2_OUT_COMP_CHROMA_ADDR, ref-
>>>> hevc.rfc_chroma_addr);
>>>   
>>>   	for (; i < V4L2_HEVC_DPB_ENTRIES_NUM_MAX; i++) {
>>>   		hantro_write_addr(vpu, G2_REF_LUMA_ADDR(i), 0);
>>> diff --git a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
>>> b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
>>> index 56c79e339030..1e96d0fce72a 100644
>>> --- a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
>>> +++ b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
>>> @@ -129,7 +129,7 @@ static void config_output(struct hantro_ctx *ctx,
>>>   			  struct hantro_decoded_buffer *dst,
>>>   			  const struct v4l2_ctrl_vp9_frame *dec_params)
>>>   {
>>> -	dma_addr_t luma_addr, chroma_addr, mv_addr;
>>> +	dma_addr_t luma_addr, chroma_addr;
>>>   
>>>   	hantro_reg_write(ctx->dev, &g2_out_dis, 0);
>>>   	if (!ctx->dev->variant->legacy_regs)
>>> @@ -142,9 +142,8 @@ static void config_output(struct hantro_ctx *ctx,
>>>   	hantro_write_addr(ctx->dev, G2_OUT_CHROMA_ADDR, chroma_addr);
>>>   	dst->vp9.chroma_offset = hantro_g2_chroma_offset(ctx);
>>>   
>>> -	mv_addr = luma_addr + hantro_g2_motion_vectors_offset(ctx);
>>> -	hantro_write_addr(ctx->dev, G2_OUT_MV_ADDR, mv_addr);
>>> -	dst->vp9.mv_offset = hantro_g2_motion_vectors_offset(ctx);
>>> +	dst->vp9.mv_addr = hantro_mv_get_buf_addr(ctx, dst-
>>>> base.vb.vb2_buf.index);
>>> +	hantro_write_addr(ctx->dev, G2_OUT_MV_ADDR, dst->vp9.mv_addr);
>>>   }
>>>   
>>>   struct hantro_vp9_ref_reg {
>>> @@ -215,15 +214,12 @@ static void config_ref_registers(struct hantro_ctx *ctx,
>>>   			.c_base = G2_REF_CHROMA_ADDR(5),
>>>   		},
>>>   	};
>>> -	dma_addr_t mv_addr;
>>>   
>>>   	config_ref(ctx, dst, &ref_regs[0], dec_params, dec_params-
>>>> last_frame_ts);
>>>   	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 = hantro_get_dec_buf_addr(ctx, &mv_ref->base.vb.vb2_buf) +
>>> -		  mv_ref->vp9.mv_offset;
>>> -	hantro_write_addr(ctx->dev, G2_REF_MV_ADDR(0), mv_addr);
>>> +	hantro_write_addr(ctx->dev, G2_REF_MV_ADDR(0), mv_ref->vp9.mv_addr);
>>>   
>>>   	hantro_reg_write(ctx->dev, &vp9_last_sign_bias,
>>>   			 dec_params->ref_frame_sign_bias &
>>> V4L2_VP9_SIGN_BIAS_LAST ? 1 : 0);
>>> diff --git a/drivers/media/platform/verisilicon/hantro_hevc.c
>>> b/drivers/media/platform/verisilicon/hantro_hevc.c
>>> index 83cd12b0ddd6..7ea1dc57a639 100644
>>> --- a/drivers/media/platform/verisilicon/hantro_hevc.c
>>> +++ b/drivers/media/platform/verisilicon/hantro_hevc.c
>>> @@ -37,39 +37,57 @@ void hantro_hevc_ref_init(struct hantro_ctx *ctx)
>>>   	hevc_dec->ref_bufs_used = 0;
>>>   }
>>>   
>>> -dma_addr_t hantro_hevc_get_ref_buf(struct hantro_ctx *ctx,
>>> -				   s32 poc)
>>> +struct vb2_v4l2_buffer *hantro_hevc_get_ref_buf(struct hantro_ctx *ctx, s32
>>> poc)
>>>   {
>>>   	struct hantro_hevc_dec_hw_ctx *hevc_dec = &ctx->hevc_dec;
>>> +	struct hantro_decoded_buffer *ref;
>>>   	int i;
>>>   
>>>   	/* Find the reference buffer in already known ones */
>>>   	for (i = 0;  i < NUM_REF_PICTURES; i++) {
>>> -		if (hevc_dec->ref_bufs_poc[i] == poc) {
>>> +		ref = vb2_to_hantro_decoded_buf(&hevc_dec->vb2_ref[i]-
>>>> vb2_buf);
>>> +		if (ref->hevc.poc == poc) {
>>>   			hevc_dec->ref_bufs_used |= 1 << i;
>>> -			return hevc_dec->ref_bufs[i].dma;
>>> +			return hevc_dec->vb2_ref[i];
>>>   		}
>>>   	}
>>>   
>>> -	return 0;
>>> +	return NULL;
>>>   }
>>>   
>>> -int hantro_hevc_add_ref_buf(struct hantro_ctx *ctx, int poc, dma_addr_t addr)
>>> +struct vb2_v4l2_buffer *hantro_hevc_add_ref_buf(struct hantro_ctx *ctx, int
>>> poc)
>>>   {
>>>   	struct hantro_hevc_dec_hw_ctx *hevc_dec = &ctx->hevc_dec;
>>> +	struct hantro_decoded_buffer *dst;
>>>   	int i;
>>>   
>>>   	/* Add a new reference buffer */
>>>   	for (i = 0; i < NUM_REF_PICTURES; i++) {
>>>   		if (!(hevc_dec->ref_bufs_used & 1 << i)) {
>>>   			hevc_dec->ref_bufs_used |= 1 << i;
>>> -			hevc_dec->ref_bufs_poc[i] = poc;
>>> -			hevc_dec->ref_bufs[i].dma = addr;
>>> -			return 0;
>>> +			hevc_dec->vb2_ref[i] = hantro_get_dst_buf(ctx);
>>> +			dst = vb2_to_hantro_decoded_buf(&hevc_dec-
>>>> vb2_ref[i]->vb2_buf);
>>> +			dst->hevc.poc = poc;
>>> +			dst->hevc.luma_addr = hantro_get_dec_buf_addr(ctx,
>>> &dst->base.vb.vb2_buf);
>>> +			dst->hevc.chroma_addr = dst->hevc.luma_addr +
>>> hantro_g2_chroma_offset(ctx);
>>> +			dst->hevc.mv_addr = hantro_mv_get_buf_addr(ctx, dst-
>>>> base.vb.vb2_buf.index);
>>> +			if (ctx->hevc_dec.use_compression) {
>>> +				dst->hevc.rfc_luma_addr =
>>> +					hantro_rfc_get_luma_buf_addr(ctx,
>>> +								     dst-
>>>> base.vb.vb2_buf.index);
>>> +				dst->hevc.rfc_chroma_addr =
>>> +					hantro_rfc_get_chroma_buf_addr(ctx,
>>> +								       dst-
>>>> base.vb.vb2_buf.index);
>>> +			} else {
>>> +				dst->hevc.rfc_luma_addr = 0;
>>> +				dst->hevc.rfc_chroma_addr = 0;
>>> +			}
>>> +
>>> +			return hevc_dec->vb2_ref[i];
>>>   		}
>>>   	}
>>>   
>>> -	return -EINVAL;
>>> +	return NULL;
>>>   }
>>>   
>>>   static int tile_buffer_reallocate(struct hantro_ctx *ctx)
>>> diff --git a/drivers/media/platform/verisilicon/hantro_hw.h
>>> b/drivers/media/platform/verisilicon/hantro_hw.h
>>> index f0e4bca4b2b2..74e20fc82630 100644
>>> --- a/drivers/media/platform/verisilicon/hantro_hw.h
>>> +++ b/drivers/media/platform/verisilicon/hantro_hw.h
>>> @@ -147,8 +147,8 @@ struct hantro_hevc_dec_ctrls {
>>>    * @tile_bsd:		Tile BSD control buffer
>>>    * @ref_bufs:		Internal reference buffers
>>>    * @scaling_lists:	Scaling lists buffer
>>> - * @ref_bufs_poc:	Internal reference buffers picture order count
>>>    * @ref_bufs_used:	Bitfield of used reference buffers
>>> + * @vb2_ref:		Reference buffers
>>>    * @ctrls:		V4L2 controls attached to a run
>>>    * @num_tile_cols_allocated: number of allocated tiles
>>>    * @use_compression:	use reference buffer compression
>>> @@ -158,10 +158,9 @@ struct hantro_hevc_dec_hw_ctx {
>>>   	struct hantro_aux_buf tile_filter;
>>>   	struct hantro_aux_buf tile_sao;
>>>   	struct hantro_aux_buf tile_bsd;
>>> -	struct hantro_aux_buf ref_bufs[NUM_REF_PICTURES];
>>>   	struct hantro_aux_buf scaling_lists;
>>> -	s32 ref_bufs_poc[NUM_REF_PICTURES];
>>>   	u32 ref_bufs_used;
>>> +	struct vb2_v4l2_buffer *vb2_ref[NUM_REF_PICTURES];
>>>   	struct hantro_hevc_dec_ctrls ctrls;
>>>   	unsigned int num_tile_cols_allocated;
>>>   	bool use_compression;
>>> @@ -456,8 +455,9 @@ void hantro_hevc_dec_exit(struct hantro_ctx *ctx);
>>>   int hantro_g2_hevc_dec_run(struct hantro_ctx *ctx);
>>>   int hantro_hevc_dec_prepare_run(struct hantro_ctx *ctx);
>>>   void hantro_hevc_ref_init(struct hantro_ctx *ctx);
>>> -dma_addr_t hantro_hevc_get_ref_buf(struct hantro_ctx *ctx, s32 poc);
>>> -int hantro_hevc_add_ref_buf(struct hantro_ctx *ctx, int poc, dma_addr_t
>>> addr);
>>> +struct vb2_v4l2_buffer *hantro_hevc_get_ref_buf(struct hantro_ctx *ctx, s32
>>> poc);
>>> +struct vb2_v4l2_buffer *hantro_hevc_add_ref_buf(struct hantro_ctx *ctx, int
>>> poc);
>>> +int hantro_hevc_get_ref_buf_index(struct hantro_ctx *ctx, s32 poc);
>>>   
>>>   int rockchip_vpu981_av1_dec_init(struct hantro_ctx *ctx);
>>>   void rockchip_vpu981_av1_dec_exit(struct hantro_ctx *ctx);
>>> @@ -469,100 +469,7 @@ static inline unsigned short hantro_vp9_num_sbs(unsigned
>>> short dimension)
>>>   	return (dimension + 63) / 64;
>>>   }
>>>   
>>> -static inline size_t
>>> -hantro_vp9_mv_size(unsigned int width, unsigned int height)
>>> -{
>>> -	int num_ctbs;
>>> -
>>> -	/*
>>> -	 * There can be up to (CTBs x 64) number of blocks,
>>> -	 * and the motion vector for each block needs 16 bytes.
>>> -	 */
>>> -	num_ctbs = hantro_vp9_num_sbs(width) * hantro_vp9_num_sbs(height);
>>> -	return (num_ctbs * 64) * 16;
>>> -}
>>> -
>>> -static inline size_t
>>> -hantro_h264_mv_size(unsigned int width, unsigned int height)
>>> -{
>>> -	/*
>>> -	 * A decoded 8-bit 4:2:0 NV12 frame may need memory for up to
>>> -	 * 448 bytes per macroblock with additional 32 bytes on
>>> -	 * multi-core variants.
>>> -	 *
>>> -	 * The H264 decoder needs extra space on the output buffers
>>> -	 * to store motion vectors. This is needed for reference
>>> -	 * frames and only if the format is non-post-processed NV12.
>>> -	 *
>>> -	 * Memory layout is as follow:
>>> -	 *
>>> -	 * +---------------------------+
>>> -	 * | Y-plane   256 bytes x MBs |
>>> -	 * +---------------------------+
>>> -	 * | UV-plane  128 bytes x MBs |
>>> -	 * +---------------------------+
>>> -	 * | MV buffer  64 bytes x MBs |
>>> -	 * +---------------------------+
>>> -	 * | MC sync          32 bytes |
>>> -	 * +---------------------------+
>>> -	 */
>>> -	return 64 * MB_WIDTH(width) * MB_WIDTH(height) + 32;
>>> -}
>>> -
>>> -static inline size_t
>>> -hantro_hevc_mv_size(unsigned int width, unsigned int height)
>>> -{
>>> -	/*
>>> -	 * A CTB can be 64x64, 32x32 or 16x16.
>>> -	 * Allocated memory for the "worse" case: 16x16
>>> -	 */
>>> -	return width * height / 16;
>>> -}
>>> -
>>> -static inline size_t
>>> -hantro_hevc_luma_compressed_size(unsigned int width, unsigned int height)
>>> -{
>>> -	u32 pic_width_in_cbsy =
>>> -		round_up((width + CBS_LUMA - 1) / CBS_LUMA, CBS_SIZE);
>>> -	u32 pic_height_in_cbsy = (height + CBS_LUMA - 1) / CBS_LUMA;
>>> -
>>> -	return round_up(pic_width_in_cbsy * pic_height_in_cbsy, CBS_SIZE);
>>> -}
>>> -
>>> -static inline size_t
>>> -hantro_hevc_chroma_compressed_size(unsigned int width, unsigned int height)
>>> -{
>>> -	u32 pic_width_in_cbsc =
>>> -		round_up((width + CBS_CHROMA_W - 1) / CBS_CHROMA_W,
>>> CBS_SIZE);
>>> -	u32 pic_height_in_cbsc = (height / 2 + CBS_CHROMA_H - 1) /
>>> CBS_CHROMA_H;
>>> -
>>> -	return round_up(pic_width_in_cbsc * pic_height_in_cbsc, CBS_SIZE);
>>> -}
>>> -
>>> -static inline size_t
>>> -hantro_hevc_compressed_size(unsigned int width, unsigned int height)
>>> -{
>>> -	return hantro_hevc_luma_compressed_size(width, height) +
>>> -	       hantro_hevc_chroma_compressed_size(width, height);
>>> -}
>>> -
>>> -static inline unsigned short hantro_av1_num_sbs(unsigned short dimension)
>>> -{
>>> -	return DIV_ROUND_UP(dimension, 64);
>>> -}
>>> -
>>> -static inline size_t
>>> -hantro_av1_mv_size(unsigned int width, unsigned int height)
>>> -{
>>> -	size_t num_sbs = hantro_av1_num_sbs(width) *
>>> hantro_av1_num_sbs(height);
>>> -
>>> -	return ALIGN(num_sbs * 384, 16) * 2 + 512;
>>> -}
>>> -
>>>   size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx);
>>> -size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx);
>>> -size_t hantro_g2_luma_compress_offset(struct hantro_ctx *ctx);
>>> -size_t hantro_g2_chroma_compress_offset(struct hantro_ctx *ctx);
>>>   
>>>   int hantro_g1_mpeg2_dec_run(struct hantro_ctx *ctx);
>>>   int rockchip_vpu2_mpeg2_dec_run(struct hantro_ctx *ctx);
>>> diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c
>>> b/drivers/media/platform/verisilicon/hantro_postproc.c
>>> index e94d1ba5ef10..2409353c16e4 100644
>>> --- a/drivers/media/platform/verisilicon/hantro_postproc.c
>>> +++ b/drivers/media/platform/verisilicon/hantro_postproc.c
>>> @@ -196,36 +196,11 @@ void hantro_postproc_free(struct hantro_ctx *ctx)
>>>   	}
>>>   }
>>>   
>>> -static unsigned int hantro_postproc_buffer_size(struct hantro_ctx *ctx)
>>> -{
>>> -	unsigned int buf_size;
>>> -
>>> -	buf_size = ctx->ref_fmt.plane_fmt[0].sizeimage;
>>> -	if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_H264_SLICE)
>>> -		buf_size += hantro_h264_mv_size(ctx->ref_fmt.width,
>>> -						ctx->ref_fmt.height);
>>> -	else if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_VP9_FRAME)
>>> -		buf_size += hantro_vp9_mv_size(ctx->ref_fmt.width,
>>> -					       ctx->ref_fmt.height);
>>> -	else if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_HEVC_SLICE) {
>>> -		buf_size += hantro_hevc_mv_size(ctx->ref_fmt.width,
>>> -						ctx->ref_fmt.height);
>>> -		if (ctx->hevc_dec.use_compression)
>>> -			buf_size += hantro_hevc_compressed_size(ctx-
>>>> ref_fmt.width,
>>> -								ctx-
>>>> ref_fmt.height);
>>> -	}
>>> -	else if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_AV1_FRAME)
>>> -		buf_size += hantro_av1_mv_size(ctx->ref_fmt.width,
>>> -					       ctx->ref_fmt.height);
>>> -
>>> -	return buf_size;
>>> -}
>>> -
>>>   static int hantro_postproc_alloc(struct hantro_ctx *ctx, int index)
>>>   {
>>>   	struct hantro_dev *vpu = ctx->dev;
>>>   	struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
>>> -	unsigned int buf_size = hantro_postproc_buffer_size(ctx);
>>> +	unsigned int buf_size = ctx->ref_fmt.plane_fmt[0].sizeimage;
>>>   
>>>   	if (!buf_size)
>>>   		return -EINVAL;
>>> @@ -267,7 +242,7 @@ dma_addr_t
>>>   hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index)
>>>   {
>>>   	struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
>>> -	unsigned int buf_size = hantro_postproc_buffer_size(ctx);
>>> +	unsigned int buf_size = ctx->ref_fmt.plane_fmt[0].sizeimage;
>>>   	struct hantro_dev *vpu = ctx->dev;
>>>   	int ret;
>>>   
>>> diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c
>>> b/drivers/media/platform/verisilicon/hantro_v4l2.c
>>> index fcf3bd9bcda2..6a876142c224 100644
>>> --- a/drivers/media/platform/verisilicon/hantro_v4l2.c
>>> +++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
>>> @@ -36,6 +36,9 @@ static int hantro_set_fmt_out(struct hantro_ctx *ctx,
>>>   static int hantro_set_fmt_cap(struct hantro_ctx *ctx,
>>>   			      struct v4l2_pix_format_mplane *pix_mp);
>>>   
>>> +static void hantro_mv_free(struct hantro_ctx *ctx);
>>> +static void hantro_rfc_free(struct hantro_ctx *ctx);
>>> +
>>>   static const struct hantro_fmt *
>>>   hantro_get_formats(const struct hantro_ctx *ctx, unsigned int *num_fmts, bool
>>> need_postproc)
>>>   {
>>> @@ -362,26 +365,6 @@ static int hantro_try_fmt(const struct hantro_ctx *ctx,
>>>   		/* Fill remaining fields */
>>>   		v4l2_fill_pixfmt_mp(pix_mp, fmt->fourcc, pix_mp->width,
>>>   				    pix_mp->height);
>>> -		if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_H264_SLICE &&
>>> -		    !hantro_needs_postproc(ctx, fmt))
>>> -			pix_mp->plane_fmt[0].sizeimage +=
>>> -				hantro_h264_mv_size(pix_mp->width,
>>> -						    pix_mp->height);
>>> -		else if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_VP9_FRAME
>>> &&
>>> -			 !hantro_needs_postproc(ctx, fmt))
>>> -			pix_mp->plane_fmt[0].sizeimage +=
>>> -				hantro_vp9_mv_size(pix_mp->width,
>>> -						   pix_mp->height);
>>> -		else if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_HEVC_SLICE
>>> &&
>>> -			 !hantro_needs_postproc(ctx, fmt))
>>> -			pix_mp->plane_fmt[0].sizeimage +=
>>> -				hantro_hevc_mv_size(pix_mp->width,
>>> -						    pix_mp->height);
>>> -		else if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_AV1_FRAME
>>> &&
>>> -			 !hantro_needs_postproc(ctx, fmt))
>>> -			pix_mp->plane_fmt[0].sizeimage +=
>>> -				hantro_av1_mv_size(pix_mp->width,
>>> -						   pix_mp->height);
>>>   	} else if (!pix_mp->plane_fmt[0].sizeimage) {
>>>   		/*
>>>   		 * For coded formats the application can specify
>>> @@ -999,6 +982,9 @@ static void hantro_stop_streaming(struct vb2_queue *q)
>>>   	if (V4L2_TYPE_IS_OUTPUT(q->type) &&
>>>   	    v4l2_m2m_has_stopped(ctx->fh.m2m_ctx))
>>>   		v4l2_event_queue_fh(&ctx->fh, &hantro_eos_event);
>>> +
>>> +	hantro_mv_free(ctx);
>>> +	hantro_rfc_free(ctx);
>>>   }
>>>   
>>>   static void hantro_buf_request_complete(struct vb2_buffer *vb)
>>> @@ -1025,3 +1011,291 @@ const struct vb2_ops hantro_queue_ops = {
>>>   	.start_streaming = hantro_start_streaming,
>>>   	.stop_streaming = hantro_stop_streaming,
>>>   };
>>> +
>>> +static size_t
>>> +hantro_vp9_mv_size(unsigned int width, unsigned int height)
>>> +{
>>> +	int num_ctbs;
>>> +
>>> +	/*
>>> +	 * There can be up to (CTBs x 64) number of blocks,
>>> +	 * and the motion vector for each block needs 16 bytes.
>>> +	 */
>>> +	num_ctbs = hantro_vp9_num_sbs(width) * hantro_vp9_num_sbs(height);
>>> +	return (num_ctbs * 64) * 16;
>>> +}
>>> +
>>> +static size_t
>>> +hantro_h264_mv_size(unsigned int width, unsigned int height)
>>> +{
>>> +	/*
>>> +	 * A decoded 8-bit 4:2:0 NV12 frame may need memory for up to
>>> +	 * 448 bytes per macroblock with additional 32 bytes on
>>> +	 * multi-core variants.
>>> +	 *
>>> +	 * The H264 decoder needs extra space on the output buffers
>>> +	 * to store motion vectors. This is needed for reference
>>> +	 * frames and only if the format is non-post-processed NV12.
>>> +	 *
>>> +	 * Memory layout is as follow:
>>> +	 *
>>> +	 * +---------------------------+
>>> +	 * | Y-plane   256 bytes x MBs |
>>> +	 * +---------------------------+
>>> +	 * | UV-plane  128 bytes x MBs |
>>> +	 * +---------------------------+
>>> +	 * | MV buffer  64 bytes x MBs |
>>> +	 * +---------------------------+
>>> +	 * | MC sync          32 bytes |
>>> +	 * +---------------------------+
>>> +	 */
>>> +	return 64 * MB_WIDTH(width) * MB_WIDTH(height) + 32;
>>> +}
>>> +
>>> +static size_t
>>> +hantro_hevc_mv_size(unsigned int width, unsigned int height, int depth)
>>> +{
>>> +	/*
>>> +	 * A CTB can be 64x64, 32x32 or 16x16.
>>> +	 * Allocated memory for the "worse" case: 16x16
>>> +	 */
>>> +	return DIV_ROUND_UP(width * height * depth / 8, 16);
>>> +}
>>> +
>>> +static inline unsigned short hantro_av1_num_sbs(unsigned short dimension)
>>> +{
>>> +	return DIV_ROUND_UP(dimension, 64);
>>> +}
>>> +
>>> +static size_t
>>> +hantro_av1_mv_size(unsigned int width, unsigned int height)
>>> +{
>>> +	size_t num_sbs = hantro_av1_num_sbs(width) *
>>> hantro_av1_num_sbs(height);
>>> +
>>> +	return ALIGN(num_sbs * 384, 16) * 2 + 512;
>>> +}
>>> +
>>> +static void hantro_mv_free(struct hantro_ctx *ctx)
>>> +{
>>> +	struct hantro_dev *vpu = ctx->dev;
>>> +	int i;
>>> +
>>> +	for (i = 0; i < MAX_MV_BUFFERS; i++) {
>>> +		struct hantro_aux_buf *mv = &ctx->dec_mv[i];
>>> +
>>> +		if (!mv->cpu)
>>> +			continue;
>>> +
>>> +		dma_free_attrs(vpu->dev, mv->size, mv->cpu,
>>> +			       mv->dma, mv->attrs);
>>> +		mv->cpu = NULL;
>>> +	}
>>> +}
>>> +
>>> +static unsigned int hantro_mv_buffer_size(struct hantro_ctx *ctx)
>>> +{
>>> +	struct hantro_dev *vpu = ctx->dev;
>>> +	int fourcc = ctx->vpu_src_fmt->fourcc;
>>> +	int width = ctx->ref_fmt.width;
>>> +	int height = ctx->ref_fmt.height;
>>> +
>>> +	switch (fourcc) {
>>> +	case V4L2_PIX_FMT_H264_SLICE:
>>> +		return hantro_h264_mv_size(width, height);
>>> +	case V4L2_PIX_FMT_VP9_FRAME:
>>> +		return hantro_vp9_mv_size(width, height);
>>> +	case V4L2_PIX_FMT_HEVC_SLICE:
>>> +		return hantro_hevc_mv_size(width, height, ctx->bit_depth);
>>> +	case V4L2_PIX_FMT_AV1_FRAME:
>>> +		return hantro_av1_mv_size(width, height);
>>> +	}
>>> +
>>> +	/* Should not happen */
>>> +	dev_warn(vpu->dev, "Invalid motion vectors size\n");
>>> +	return 0;
>>> +}
>>> +
>>> +static int hantro_mv_buffer_alloc(struct hantro_ctx *ctx, int index)
>>> +{
>>> +	struct hantro_dev *vpu = ctx->dev;
>>> +	struct hantro_aux_buf *mv = &ctx->dec_mv[index];
>>> +	unsigned int buf_size = hantro_mv_buffer_size(ctx);
>>> +
>>> +	if (!buf_size)
>>> +		return -EINVAL;
>>> +
>>> +	/*
>>> +	 * Motion vectors buffers are only read and write by the
>>> +	 * hardware so no mapping is needed.
>>> +	 */
>>> +	mv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
>>> +	mv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &mv->dma,
>>> +				  GFP_KERNEL, mv->attrs);
>>> +	if (!mv->cpu)
>>> +		return -ENOMEM;
>>> +	mv->size = buf_size;
>>> +
>>> +	return 0;
>>> +}
>>> +
>>> +dma_addr_t
>>> +hantro_mv_get_buf_addr(struct hantro_ctx *ctx, int index)
>>> +{
>>> +	struct hantro_aux_buf *mv = &ctx->dec_mv[index];
>>> +	unsigned int buf_size = hantro_mv_buffer_size(ctx);
>>> +	struct hantro_dev *vpu = ctx->dev;
>>> +	int ret;
>>> +
>>> +	if (mv->size < buf_size && mv->cpu) {
>>> +		/* buffer is too small, release it */
>>> +		dma_free_attrs(vpu->dev, mv->size, mv->cpu,
>>> +			       mv->dma, mv->attrs);
>>> +		mv->cpu = NULL;
>>> +	}
>>> +
>>> +	if (!mv->cpu) {
>>> +		/* buffer not already allocated, try getting a new one */
>>> +		ret = hantro_mv_buffer_alloc(ctx, index);
>>> +		if (ret)
>>> +			return 0;
>>> +	}
>>> +
>>> +	if (!mv->cpu)
>>> +		return 0;
>>> +
>>> +	return mv->dma;
>>> +}
>>> +
>>> +static inline size_t
>>> +hantro_hevc_luma_compressed_size(unsigned int width, unsigned int height)
>>> +{
>>> +	u32 pic_width_in_cbsy =
>>> +		round_up((width + CBS_LUMA - 1) / CBS_LUMA, CBS_SIZE);
>>> +	u32 pic_height_in_cbsy = (height + CBS_LUMA - 1) / CBS_LUMA;
>>> +
>>> +	return round_up(pic_width_in_cbsy * pic_height_in_cbsy, CBS_SIZE);
>>> +}
>>> +
>>> +static inline size_t
>>> +hantro_hevc_chroma_compressed_size(unsigned int width, unsigned int height)
>>> +{
>>> +	u32 pic_width_in_cbsc =
>>> +		round_up((width + CBS_CHROMA_W - 1) / CBS_CHROMA_W,
>>> CBS_SIZE);
>>> +	u32 pic_height_in_cbsc = (height / 2 + CBS_CHROMA_H - 1) /
>>> CBS_CHROMA_H;
>>> +
>>> +	return round_up(pic_width_in_cbsc * pic_height_in_cbsc, CBS_SIZE);
>>> +}
>>> +
>>> +static inline size_t
>>> +hantro_hevc_compressed_size(unsigned int width, unsigned int height)
>>> +{
>>> +	return hantro_hevc_luma_compressed_size(width, height) +
>>> +	       hantro_hevc_chroma_compressed_size(width, height);
>>> +}
>>> +
>>> +static void hantro_rfc_free(struct hantro_ctx *ctx)
>>> +{
>>> +	struct hantro_dev *vpu = ctx->dev;
>>> +	int i;
>>> +
>>> +	for (i = 0; i < MAX_MV_BUFFERS; i++) {
>>> +		struct hantro_aux_buf *rfc = &ctx->dec_rfc[i];
>>> +
>>> +		if (!rfc->cpu)
>>> +			continue;
>>> +
>>> +		dma_free_attrs(vpu->dev, rfc->size, rfc->cpu,
>>> +			       rfc->dma, rfc->attrs);
>>> +		rfc->cpu = NULL;
>>> +	}
>>> +}
>>> +
>>> +static unsigned int hantro_rfc_buffer_size(struct hantro_ctx *ctx)
>>> +{
>>> +	struct hantro_dev *vpu = ctx->dev;
>>> +	int fourcc = ctx->vpu_src_fmt->fourcc;
>>> +	int width = ctx->ref_fmt.width;
>>> +	int height = ctx->ref_fmt.height;
>>> +
>>> +	switch (fourcc) {
>>> +	case V4L2_PIX_FMT_HEVC_SLICE:
>>> +		return hantro_hevc_compressed_size(width, height);
>>> +	}
>>> +
>>> +	/* Should not happen */
>>> +	dev_warn(vpu->dev, "Invalid rfc size\n");
>>> +	return 0;
>>> +}
>>> +
>>> +static int hantro_rfc_buffer_alloc(struct hantro_ctx *ctx, int index)
>>> +{
>>> +	struct hantro_dev *vpu = ctx->dev;
>>> +	struct hantro_aux_buf *rfc = &ctx->dec_rfc[index];
>>> +	unsigned int buf_size = hantro_rfc_buffer_size(ctx);
>>> +
>>> +	if (!buf_size)
>>> +		return -EINVAL;
>>> +
>>> +	/*
>>> +	 * RFC buffers are only read and write by the
>>> +	 * hardware so no mapping is needed.
>>> +	 */
>>> +	rfc->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
>>> +	rfc->cpu = dma_alloc_attrs(vpu->dev, buf_size, &rfc->dma,
>>> +				   GFP_KERNEL, rfc->attrs);
>>> +	if (!rfc->cpu)
>>> +		return -ENOMEM;
>>> +	rfc->size = buf_size;
>>> +
>>> +	return 0;
>>> +}
>>> +
>>> +dma_addr_t
>>> +hantro_rfc_get_luma_buf_addr(struct hantro_ctx *ctx, int index)
>>> +{
>>> +	struct hantro_aux_buf *rfc = &ctx->dec_rfc[index];
>>> +	unsigned int buf_size = hantro_rfc_buffer_size(ctx);
>>> +	struct hantro_dev *vpu = ctx->dev;
>>> +	int ret;
>>> +
>>> +	if (rfc->size < buf_size && rfc->cpu) {
>>> +		/* buffer is too small, release it */
>>> +		dma_free_attrs(vpu->dev, rfc->size, rfc->cpu,
>>> +			       rfc->dma, rfc->attrs);
>>> +		rfc->cpu = NULL;
>>> +	}
>>> +
>>> +	if (!rfc->cpu) {
>>> +		/* buffer not already allocated, try getting a new one */
>>> +		ret = hantro_rfc_buffer_alloc(ctx, index);
>>> +		if (ret)
>>> +			return 0;
>>> +	}
>>> +
>>> +	if (!rfc->cpu)
>>> +		return 0;
>>> +
>>> +	return rfc->dma;
>>> +}
>>> +
>>> +dma_addr_t
>>> +hantro_rfc_get_chroma_buf_addr(struct hantro_ctx *ctx, int index)
>>> +{
>>> +	dma_addr_t luma_addr = hantro_rfc_get_luma_buf_addr(ctx, index);
>>> +	struct hantro_dev *vpu = ctx->dev;
>>> +	int fourcc = ctx->vpu_src_fmt->fourcc;
>>> +	int width = ctx->ref_fmt.width;
>>> +	int height = ctx->ref_fmt.height;
>>> +
>>> +	if (!luma_addr)
>>> +		return -EINVAL;
>>> +
>>> +	switch (fourcc) {
>>> +	case V4L2_PIX_FMT_HEVC_SLICE:
>>> +		return luma_addr + hantro_hevc_luma_compressed_size(width,
>>> height);
>>> +	}
>>> +
>>> +	/* Should not happen */
>>> +	dev_warn(vpu->dev, "Invalid rfc chroma address\n");
>>> +	return 0;
>>> +}
>>> diff --git a/drivers/media/platform/verisilicon/rockchip_vpu981_hw_av1_dec.c
>>> b/drivers/media/platform/verisilicon/rockchip_vpu981_hw_av1_dec.c
>>> index c1ada14df4c3..21da8ddfc4b3 100644
>>> --- a/drivers/media/platform/verisilicon/rockchip_vpu981_hw_av1_dec.c
>>> +++ b/drivers/media/platform/verisilicon/rockchip_vpu981_hw_av1_dec.c
>>> @@ -62,7 +62,7 @@ rockchip_vpu981_av1_dec_set_ref(struct hantro_ctx *ctx, int
>>> ref, int idx,
>>>   	const struct v4l2_ctrl_av1_frame *frame = ctrls->frame;
>>>   	struct hantro_dev *vpu = ctx->dev;
>>>   	struct hantro_decoded_buffer *dst;
>>> -	dma_addr_t luma_addr, chroma_addr, mv_addr = 0;
>>> +	dma_addr_t luma_addr, chroma_addr = 0;
>>>   	int cur_width = frame->frame_width_minus_1 + 1;
>>>   	int cur_height = frame->frame_height_minus_1 + 1;
>>>   	int scale_width =
>>> @@ -120,11 +120,10 @@ rockchip_vpu981_av1_dec_set_ref(struct hantro_ctx *ctx,
>>> int ref, int idx,
>>>   	dst = vb2_to_hantro_decoded_buf(&av1_dec->frame_refs[idx].vb2_ref-
>>>> vb2_buf);
>>>   	luma_addr = hantro_get_dec_buf_addr(ctx, &dst->base.vb.vb2_buf);
>>>   	chroma_addr = luma_addr + dst->av1.chroma_offset;
>>> -	mv_addr = luma_addr + dst->av1.mv_offset;
>>>   
>>>   	hantro_write_addr(vpu, AV1_REFERENCE_Y(ref), luma_addr);
>>>   	hantro_write_addr(vpu, AV1_REFERENCE_CB(ref), chroma_addr);
>>> -	hantro_write_addr(vpu, AV1_REFERENCE_MV(ref), mv_addr);
>>> +	hantro_write_addr(vpu, AV1_REFERENCE_MV(ref), dst->av1.mv_addr);
>>>   
>>>   	return (scale_width != (1 << AV1_REF_SCALE_SHIFT)) ||
>>>   		(scale_height != (1 << AV1_REF_SCALE_SHIFT));
>>> @@ -180,11 +179,10 @@ static void
>>> rockchip_vpu981_av1_dec_set_segmentation(struct hantro_ctx *ctx)
>>>   		if (idx >= 0) {
>>>   			dma_addr_t luma_addr, mv_addr = 0;
>>>   			struct hantro_decoded_buffer *seg;
>>> -			size_t mv_offset = hantro_av1_chroma_size(ctx);
>>>   
>>>   			seg = vb2_to_hantro_decoded_buf(&av1_dec-
>>>> frame_refs[idx].vb2_ref->vb2_buf);
>>>   			luma_addr = hantro_get_dec_buf_addr(ctx, &seg-
>>>> base.vb.vb2_buf);
>>> -			mv_addr = luma_addr + mv_offset;
>>> +			mv_addr = hantro_mv_get_buf_addr(ctx, seg-
>>>> base.vb.vb2_buf.index);
>>>   
>>>   			hantro_write_addr(vpu, AV1_SEGMENTATION, mv_addr);
>>>   			hantro_reg_write(vpu, &av1_use_temporal3_mvs, 1);
>>> @@ -1350,22 +1348,20 @@ rockchip_vpu981_av1_dec_set_output_buffer(struct
>>> hantro_ctx *ctx)
>>>   	struct hantro_dev *vpu = ctx->dev;
>>>   	struct hantro_decoded_buffer *dst;
>>>   	struct vb2_v4l2_buffer *vb2_dst;
>>> -	dma_addr_t luma_addr, chroma_addr, mv_addr = 0;
>>> +	dma_addr_t luma_addr, chroma_addr = 0;
>>>   	size_t cr_offset = hantro_av1_luma_size(ctx);
>>> -	size_t mv_offset = hantro_av1_chroma_size(ctx);
>>>   
>>>   	vb2_dst = av1_dec->frame_refs[av1_dec->current_frame_index].vb2_ref;
>>>   	dst = vb2_to_hantro_decoded_buf(&vb2_dst->vb2_buf);
>>>   	luma_addr = hantro_get_dec_buf_addr(ctx, &dst->base.vb.vb2_buf);
>>>   	chroma_addr = luma_addr + cr_offset;
>>> -	mv_addr = luma_addr + mv_offset;
>>>   
>>>   	dst->av1.chroma_offset = cr_offset;
>>> -	dst->av1.mv_offset = mv_offset;
>>> +	dst->av1.mv_addr = hantro_mv_get_buf_addr(ctx, dst-
>>>> base.vb.vb2_buf.index);
>>>   
>>>   	hantro_write_addr(vpu, AV1_TILE_OUT_LU, luma_addr);
>>>   	hantro_write_addr(vpu, AV1_TILE_OUT_CH, chroma_addr);
>>> -	hantro_write_addr(vpu, AV1_TILE_OUT_MV, mv_addr);
>>> +	hantro_write_addr(vpu, AV1_TILE_OUT_MV, dst->av1.mv_addr);
>>>   }
>>>   
>>>   int rockchip_vpu981_av1_dec_run(struct hantro_ctx *ctx)