Re: [PATCH v2 7/7] media: venus: Set buffer to FW based on FW min count requirement.

From: Stanimir Varbanov
Date: Mon Jul 05 2021 - 05:43:29 EST



On 7/1/21 11:05 AM, Dikshita Agarwal wrote:
> - Get the min buffer count required by FW from source event change
> and use the same value to decide actual buffer count and for
> buffer size calculation.
> - Setup DPB and OPB buffers after session continue incase of
> reconfig.
>
> Signed-off-by: Dikshita Agarwal <dikshita@xxxxxxxxxxxxxx>
> ---
> drivers/media/platform/qcom/venus/core.h | 1 +
> drivers/media/platform/qcom/venus/helpers.c | 11 ++++++++++-
> drivers/media/platform/qcom/venus/hfi_helper.h | 9 +++++++++
> drivers/media/platform/qcom/venus/hfi_msgs.c | 7 +++++++
> drivers/media/platform/qcom/venus/hfi_plat_bufs.h | 2 +-
> drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c | 14 +++++++++-----
> drivers/media/platform/qcom/venus/hfi_platform.h | 3 ++-
> drivers/media/platform/qcom/venus/vdec.c | 20 +++++++++++++-------
> 8 files changed, 52 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
> index 1ff20d9..b2b023e 100644
> --- a/drivers/media/platform/qcom/venus/core.h
> +++ b/drivers/media/platform/qcom/venus/core.h
> @@ -403,6 +403,7 @@ struct venus_inst {
> u32 width;
> u32 height;
> struct v4l2_rect crop;
> + u32 fw_min_cnt;
> u32 out_width;
> u32 out_height;
> u32 colorspace;
> diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c
> index ccf188a..a7c49ab 100644
> --- a/drivers/media/platform/qcom/venus/helpers.c
> +++ b/drivers/media/platform/qcom/venus/helpers.c
> @@ -576,6 +576,7 @@ static int platform_get_bufreq(struct venus_inst *inst, u32 buftype,
> struct hfi_plat_buffers_params params;
> bool is_dec = inst->session_type == VIDC_SESSION_TYPE_DEC;
> struct venc_controls *enc_ctr = &inst->controls.enc;
> + int ret = 0;
>
> hfi_plat = hfi_platform_get(version);
>
> @@ -610,7 +611,15 @@ static int platform_get_bufreq(struct venus_inst *inst, u32 buftype,
> params.enc.is_tenbit = inst->bit_depth == VIDC_BITDEPTH_10;
> }
>
> - return hfi_plat->bufreq(&params, inst->session_type, buftype, req);
> + if (buftype == HFI_BUFFER_OUTPUT || buftype == HFI_BUFFER_OUTPUT2 ||
> + buftype == HFI_BUFFER_INTERNAL_SCRATCH_1(version))
> + req->count_min = inst->fw_min_cnt;
> +
> + ret = hfi_plat->bufreq(&params, inst->session_type, buftype, req, inst->num_output_bufs);

I'm confused, inst->num_output_bufs is filled by calling
venus_helper_get_bufreq() which itself is calling hfi_plat->bufreq().
Could you explain the idea?

> + if (buftype == HFI_BUFFER_OUTPUT || buftype == HFI_BUFFER_OUTPUT2)
> + if (inst->fw_min_cnt != req->count_min)
> + inst->fw_min_cnt = req->count_min;
> + return ret;
> }
>
> int venus_helper_get_bufreq(struct venus_inst *inst, u32 type,
> diff --git a/drivers/media/platform/qcom/venus/hfi_helper.h b/drivers/media/platform/qcom/venus/hfi_helper.h
> index 185c302..f2e8fad 100644
> --- a/drivers/media/platform/qcom/venus/hfi_helper.h
> +++ b/drivers/media/platform/qcom/venus/hfi_helper.h
> @@ -167,6 +167,7 @@
> #define HFI_PROPERTY_PARAM_VDEC_RECOVERY_POINT_SEI_EXTRADATA 0x120300c
> #define HFI_PROPERTY_PARAM_VDEC_THUMBNAIL_MODE 0x120300d
> #define HFI_PROPERTY_PARAM_VDEC_FRAME_ASSEMBLY 0x120300e
> +#define HFI_PROPERTY_PARAM_VDEC_DPB_COUNTS 0x120300e
> #define HFI_PROPERTY_PARAM_VDEC_VC1_FRAMEDISP_EXTRADATA 0x1203011
> #define HFI_PROPERTY_PARAM_VDEC_VC1_SEQDISP_EXTRADATA 0x1203012
> #define HFI_PROPERTY_PARAM_VDEC_TIMESTAMP_EXTRADATA 0x1203013
> @@ -906,6 +907,14 @@ struct hfi_extradata_input_crop {
> u32 height;
> };
>
> +struct hfi_dpb_counts {
> + u32 max_dpb_count;
> + u32 max_ref_frames;
> + u32 max_dec_buffering;
> + u32 max_reorder_frames;
> + u32 fw_min_cnt;
> +};
> +
> #define HFI_COLOR_FORMAT_MONOCHROME 0x01
> #define HFI_COLOR_FORMAT_NV12 0x02
> #define HFI_COLOR_FORMAT_NV21 0x03
> diff --git a/drivers/media/platform/qcom/venus/hfi_msgs.c b/drivers/media/platform/qcom/venus/hfi_msgs.c
> index a2d436d..ed005d6 100644
> --- a/drivers/media/platform/qcom/venus/hfi_msgs.c
> +++ b/drivers/media/platform/qcom/venus/hfi_msgs.c
> @@ -32,6 +32,7 @@ static void event_seq_changed(struct venus_core *core, struct venus_inst *inst,
> struct hfi_colour_space *colour_info;
> struct hfi_buffer_requirements *bufreq;
> struct hfi_extradata_input_crop *crop;
> + struct hfi_dpb_counts *dpb_count;
> u8 *data_ptr;
> u32 ptype;
>
> @@ -110,6 +111,12 @@ static void event_seq_changed(struct venus_core *core, struct venus_inst *inst,
> event.input_crop.height = crop->height;
> data_ptr += sizeof(*crop);
> break;
> + case HFI_PROPERTY_PARAM_VDEC_DPB_COUNTS:
> + data_ptr += sizeof(u32);
> + dpb_count = (struct hfi_dpb_counts *)data_ptr;
> + event.buf_count = dpb_count->fw_min_cnt;
> + data_ptr += sizeof(*dpb_count);
> + break;
> default:
> break;
> }
> diff --git a/drivers/media/platform/qcom/venus/hfi_plat_bufs.h b/drivers/media/platform/qcom/venus/hfi_plat_bufs.h
> index 52a51a3..f40daa3 100644
> --- a/drivers/media/platform/qcom/venus/hfi_plat_bufs.h
> +++ b/drivers/media/platform/qcom/venus/hfi_plat_bufs.h
> @@ -33,6 +33,6 @@ struct hfi_plat_buffers_params {
> };
>
> int hfi_plat_bufreq_v6(struct hfi_plat_buffers_params *params, u32 session_type,
> - u32 buftype, struct hfi_buffer_requirements *bufreq);
> + u32 buftype, struct hfi_buffer_requirements *bufreq, u32 num_output_bufs);
>
> #endif
> diff --git a/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c b/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c
> index 479178b..2d50949 100644
> --- a/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c
> +++ b/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c
> @@ -1164,7 +1164,7 @@ static int output_buffer_count(u32 session_type, u32 codec)
> output_min_count = 6;
> break;
> case V4L2_PIX_FMT_VP9:
> - output_min_count = 9;
> + output_min_count = 11;
> break;
> case V4L2_PIX_FMT_H264:
> case V4L2_PIX_FMT_HEVC:
> @@ -1180,7 +1180,7 @@ static int output_buffer_count(u32 session_type, u32 codec)
> }
>
> static int bufreq_dec(struct hfi_plat_buffers_params *params, u32 buftype,
> - struct hfi_buffer_requirements *bufreq)
> + struct hfi_buffer_requirements *bufreq, u32 num_output_bufs)
> {
> enum hfi_version version = params->version;
> u32 codec = params->codec;
> @@ -1213,6 +1213,10 @@ static int bufreq_dec(struct hfi_plat_buffers_params *params, u32 buftype,
> }
>
> out_min_count = output_buffer_count(VIDC_SESSION_TYPE_DEC, codec);
> + /* Max of driver and FW count */
> + out_min_count = max(out_min_count, bufreq->count_min);
> + /* Max of FW and client count */
> + out_min_count = max(out_min_count, num_output_bufs);
>
> bufreq->type = buftype;
> bufreq->region_size = 0;
> @@ -1237,7 +1241,7 @@ static int bufreq_dec(struct hfi_plat_buffers_params *params, u32 buftype,
> } else if (buftype == HFI_BUFFER_INTERNAL_SCRATCH(version)) {
> bufreq->size = dec_ops->scratch(width, height, is_interlaced);
> } else if (buftype == HFI_BUFFER_INTERNAL_SCRATCH_1(version)) {
> - bufreq->size = dec_ops->scratch1(width, height, out_min_count,
> + bufreq->size = dec_ops->scratch1(width, height, VB2_MAX_FRAME,
> is_secondary_output,
> num_vpp_pipes);
> } else if (buftype == HFI_BUFFER_INTERNAL_PERSIST_1) {
> @@ -1318,10 +1322,10 @@ static int bufreq_enc(struct hfi_plat_buffers_params *params, u32 buftype,
> }
>
> int hfi_plat_bufreq_v6(struct hfi_plat_buffers_params *params, u32 session_type,
> - u32 buftype, struct hfi_buffer_requirements *bufreq)
> + u32 buftype, struct hfi_buffer_requirements *bufreq, u32 num_output_bufs)
> {
> if (session_type == VIDC_SESSION_TYPE_DEC)
> - return bufreq_dec(params, buftype, bufreq);
> + return bufreq_dec(params, buftype, bufreq, num_output_bufs);
> else
> return bufreq_enc(params, buftype, bufreq);
> }
> diff --git a/drivers/media/platform/qcom/venus/hfi_platform.h b/drivers/media/platform/qcom/venus/hfi_platform.h
> index ef768bf..89fa3bd 100644
> --- a/drivers/media/platform/qcom/venus/hfi_platform.h
> +++ b/drivers/media/platform/qcom/venus/hfi_platform.h
> @@ -51,7 +51,8 @@ struct hfi_platform {
> void (*codecs)(u32 *enc_codecs, u32 *dec_codecs, u32 *count);
> const struct hfi_plat_caps *(*capabilities)(unsigned int *entries);
> int (*bufreq)(struct hfi_plat_buffers_params *params, u32 session_type,
> - u32 buftype, struct hfi_buffer_requirements *bufreq);
> + u32 buftype, struct hfi_buffer_requirements *bufreq,
> + u32 num_output_bufs);
> };
>
> extern const struct hfi_platform hfi_plat_v4;
> diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
> index 892be8d..3e91d8c 100644
> --- a/drivers/media/platform/qcom/venus/vdec.c
> +++ b/drivers/media/platform/qcom/venus/vdec.c
> @@ -988,23 +988,23 @@ static int vdec_start_capture(struct venus_inst *inst)
> if (ret)
> goto err;
>
> + venus_pm_load_scale(inst);
> +
> + inst->next_buf_last = false;
> +
> ret = venus_helper_alloc_dpb_bufs(inst);
> if (ret)
> goto err;
>
> - ret = venus_helper_queue_dpb_bufs(inst);
> + ret = hfi_session_continue(inst);
> if (ret)
> goto free_dpb_bufs;
>
> - ret = venus_helper_process_initial_cap_bufs(inst);
> + ret = venus_helper_queue_dpb_bufs(inst);
> if (ret)
> goto free_dpb_bufs;
>
> - venus_pm_load_scale(inst);
> -
> - inst->next_buf_last = false;
> -
> - ret = hfi_session_continue(inst);
> + ret = venus_helper_process_initial_cap_bufs(inst);
> if (ret)
> goto free_dpb_bufs;
>
> @@ -1411,6 +1411,11 @@ static void vdec_event_change(struct venus_inst *inst,
> inst->crop.height = ev_data->height;
> }
>
> + inst->fw_min_cnt = ev_data->buf_count;
> + //overwriting this to 11 for vp9 due to fw bug
> + if(inst->hfi_codec == HFI_VIDEO_CODEC_VP9)
> + inst->fw_min_cnt = 11;
> +
> inst->out_width = ev_data->width;
> inst->out_height = ev_data->height;
>
> @@ -1514,6 +1519,7 @@ static void vdec_inst_init(struct venus_inst *inst)
> inst->crop.top = 0;
> inst->crop.width = inst->width;
> inst->crop.height = inst->height;
> + inst->fw_min_cnt = 8;
> inst->out_width = frame_width_min(inst);
> inst->out_height = frame_height_min(inst);
> inst->fps = 30;
>

--
regards,
Stan