Re: [PATCH v6, 19/24] media: mediatek: vcodec: disable wait interrupt for svp mode

["CK Hu (胡俊光)" <ck.hu@mediatek.com>]

Hi, Yunfei:

On Thu, 2024-05-16 at 20:20 +0800, Yunfei Dong wrote:
> Waiting interrupt in optee-os for svp mode, need to disable it in kernel
> in case of interrupt is cleaned.
> 
> Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
> ---
>  .../vcodec/decoder/mtk_vcodec_dec_hw.c        | 34 +++++------
>  .../vcodec/decoder/mtk_vcodec_dec_pm.c        |  6 +-
>  .../decoder/vdec/vdec_h264_req_multi_if.c     | 57 +++++++++++--------
>  3 files changed, 54 insertions(+), 43 deletions(-)
> 
> diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_hw.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_hw.c
> index 881d5de41e05..1982c088c6da 100644
> --- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_hw.c
> +++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_hw.c
> @@ -72,26 +72,28 @@ static irqreturn_t mtk_vdec_hw_irq_handler(int irq, void *priv)
>  
>  	ctx = mtk_vcodec_get_curr_ctx(dev->main_dev, dev->hw_idx);
>  
> -	/* check if HW active or not */
> -	cg_status = readl(dev->reg_base[VDEC_HW_SYS] + VDEC_HW_ACTIVE_ADDR);
> -	if (cg_status & VDEC_HW_ACTIVE_MASK) {
> -		mtk_v4l2_vdec_err(ctx, "vdec active is not 0x0 (0x%08x)", cg_status);
> -		return IRQ_HANDLED;
> -	}
> +	if (!ctx->is_secure_playback) {
> +		/* check if HW active or not */
> +		cg_status = readl(dev->reg_base[VDEC_HW_SYS] + VDEC_HW_ACTIVE_ADDR);
> +		if (cg_status & VDEC_HW_ACTIVE_MASK) {
> +			mtk_v4l2_vdec_err(ctx, "vdec active is not 0x0 (0x%08x)", cg_status);
> +			return IRQ_HANDLED;
> +		}
>  
> -	dec_done_status = readl(vdec_misc_addr);
> -	if ((dec_done_status & MTK_VDEC_IRQ_STATUS_DEC_SUCCESS) !=
> -	    MTK_VDEC_IRQ_STATUS_DEC_SUCCESS)
> -		return IRQ_HANDLED;
> +		dec_done_status = readl(vdec_misc_addr);
> +		if ((dec_done_status & MTK_VDEC_IRQ_STATUS_DEC_SUCCESS) !=
> +		    MTK_VDEC_IRQ_STATUS_DEC_SUCCESS)
> +			return IRQ_HANDLED;
>  
> -	/* clear interrupt */
> -	writel(dec_done_status | VDEC_IRQ_CFG, vdec_misc_addr);
> -	writel(dec_done_status & ~VDEC_IRQ_CLR, vdec_misc_addr);
> +		/* clear interrupt */
> +		writel(dec_done_status | VDEC_IRQ_CFG, vdec_misc_addr);
> +		writel(dec_done_status & ~VDEC_IRQ_CLR, vdec_misc_addr);
>  
> -	wake_up_dec_ctx(ctx, MTK_INST_IRQ_RECEIVED, dev->hw_idx);
> +		wake_up_dec_ctx(ctx, MTK_INST_IRQ_RECEIVED, dev->hw_idx);
>  
> -	mtk_v4l2_vdec_dbg(3, ctx, "wake up ctx %d, dec_done_status=%x",
> -			  ctx->id, dec_done_status);
> +		mtk_v4l2_vdec_dbg(3, ctx, "wake up ctx %d, dec_done_status=%x",
> +				  ctx->id, dec_done_status);
> +	}
>  
>  	return IRQ_HANDLED;
>  }
> diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_pm.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_pm.c
> index aefd3e9e3061..a94eda936f16 100644
> --- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_pm.c
> +++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_pm.c
> @@ -238,7 +238,8 @@ void mtk_vcodec_dec_enable_hardware(struct mtk_vcodec_dec_ctx *ctx, int hw_idx)
>  		mtk_vcodec_dec_child_dev_on(ctx->dev, MTK_VDEC_LAT0);
>  	mtk_vcodec_dec_child_dev_on(ctx->dev, hw_idx);
>  
> -	mtk_vcodec_dec_enable_irq(ctx->dev, hw_idx);
> +	if (!ctx->is_secure_playback)
> +		mtk_vcodec_dec_enable_irq(ctx->dev, hw_idx);
>  
>  	if (IS_VDEC_INNER_RACING(ctx->dev->dec_capability))
>  		mtk_vcodec_load_racing_info(ctx);
> @@ -250,7 +251,8 @@ void mtk_vcodec_dec_disable_hardware(struct mtk_vcodec_dec_ctx *ctx, int hw_idx)
>  	if (IS_VDEC_INNER_RACING(ctx->dev->dec_capability))
>  		mtk_vcodec_record_racing_info(ctx);
>  
> -	mtk_vcodec_dec_disable_irq(ctx->dev, hw_idx);
> +	if (!ctx->is_secure_playback)
> +		mtk_vcodec_dec_disable_irq(ctx->dev, hw_idx);
>  
>  	mtk_vcodec_dec_child_dev_off(ctx->dev, hw_idx);
>  	if (IS_VDEC_LAT_ARCH(ctx->dev->vdec_pdata->hw_arch) &&
> diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c
> index f27d326f00ba..3186777dcc13 100644
> --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c
> +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c
> @@ -593,14 +593,16 @@ static int vdec_h264_slice_core_decode(struct vdec_lat_buf *lat_buf)
>  		goto vdec_dec_end;
>  	}
>  
> -	/* wait decoder done interrupt */
> -	timeout = mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED,
> -					       WAIT_INTR_TIMEOUT_MS, MTK_VDEC_CORE);
> -	if (timeout)
> -		mtk_vdec_err(ctx, "core decode timeout: pic_%d", ctx->decoded_frame_cnt);
> -	inst->vsi_core->dec.timeout = !!timeout;
> -
> -	vpu_dec_core_end(vpu);
> +	if (!ctx->is_secure_playback) {
> +		/* wait decoder done interrupt */
> +		timeout = mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED,
> +						       WAIT_INTR_TIMEOUT_MS, MTK_VDEC_CORE);
> +		if (timeout)
> +			mtk_vdec_err(ctx, "core decode timeout: pic_%d", ctx->decoded_frame_cnt);
> +		inst->vsi_core->dec.timeout = !!timeout;
> +
> +		vpu_dec_core_end(vpu);
> +	}

In svp mode, optee driver would wait the irq, but why optee driver does not notify normal world driver? The normal world driver here does not wait anything and keep going, so it would get the frame
which has not been processed done and pass it to next module such as mdp? The normal world driver does not wait here, how does it make sure the frame is processed done?

Regards,

CK

>  	mtk_vdec_debug(ctx, "pic[%d] crc: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x",
>  		       ctx->decoded_frame_cnt,
>  		       inst->vsi_core->dec.crc[0], inst->vsi_core->dec.crc[1],
> @@ -724,14 +726,16 @@ static int vdec_h264_slice_lat_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
>  		vdec_msg_queue_qbuf(&inst->ctx->msg_queue.core_ctx, lat_buf);
>  	}
>  
> -	/* wait decoder done interrupt */
> -	timeout = mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED,
> -					       WAIT_INTR_TIMEOUT_MS, MTK_VDEC_LAT0);
> -	if (timeout)
> -		mtk_vdec_err(inst->ctx, "lat decode timeout: pic_%d", inst->slice_dec_num);
> -	inst->vsi->dec.timeout = !!timeout;
> +	if (!inst->ctx->is_secure_playback) {
> +		/* wait decoder done interrupt */
> +		timeout = mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED,
> +						       WAIT_INTR_TIMEOUT_MS, MTK_VDEC_LAT0);
> +		if (timeout)
> +			mtk_vdec_err(inst->ctx, "lat decode timeout: pic_%d", inst->slice_dec_num);
> +		inst->vsi->dec.timeout = !!timeout;
>  
> -	err = vpu_dec_end(vpu);
> +		err = vpu_dec_end(vpu);
> +	}
>  	if (err == SLICE_HEADER_FULL || err == TRANS_BUFFER_FULL) {
>  		if (!IS_VDEC_INNER_RACING(inst->ctx->dev->dec_capability))
>  			vdec_msg_queue_qbuf(&inst->ctx->msg_queue.lat_ctx, lat_buf);
> @@ -831,16 +835,19 @@ static int vdec_h264_slice_single_decode(void *h_vdec, struct mtk_vcodec_mem *bs
>  	if (err)
>  		goto err_free_fb_out;
>  
> -	/* wait decoder done interrupt */
> -	err = mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED,
> -					   WAIT_INTR_TIMEOUT_MS, MTK_VDEC_CORE);
> -	if (err)
> -		mtk_vdec_err(inst->ctx, "decode timeout: pic_%d", inst->ctx->decoded_frame_cnt);
> -
> -	inst->vsi->dec.timeout = !!err;
> -	err = vpu_dec_end(vpu);
> -	if (err)
> -		goto err_free_fb_out;
> +	if (!inst->ctx->is_secure_playback) {
> +		/* wait decoder done interrupt */
> +		err = mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED,
> +						   WAIT_INTR_TIMEOUT_MS, MTK_VDEC_CORE);
> +		if (err)
> +			mtk_vdec_err(inst->ctx, "decode timeout: pic_%d",
> +				     inst->ctx->decoded_frame_cnt);
> +
> +		inst->vsi->dec.timeout = !!err;
> +		err = vpu_dec_end(vpu);
> +		if (err)
> +			goto err_free_fb_out;
> +	}
>  
>  	memcpy(&inst->vsi_ctx, inst->vpu.vsi, sizeof(inst->vsi_ctx));
>  	mtk_vdec_debug(inst->ctx, "pic[%d] crc: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x",