Re: 答复: [PATCH 4/5] media: mtk-vcodec: Add two error cases upon vpu irq handling

Mon Aug 9 01:26:32 PDT 2021

On 09.08.21 09:37, Irui Wang (王瑞) wrote:
> Hi Dafna,
> 
>>> I am testing the vp8 encoder on chromeos and at some point the encoder interrupts stop arriving so I try to figure out why and report any possible error.
> 1. Log shows wait IRQ timeout ?

Hi, yes, I get timeout when waiting to the encoder interrupt. The timeout is on vp8_enc_wait_venc_done

> 2. Always happened  issue ?  timeout at the beginning or  in processing ?

The commands that I run is:

sudo --user=#1000 /usr/local/libexec/chrome-binary-tests/video_encode_accelerator_tests --gtest_filter=-*NV12Dmabuf*  --codec=vp8 /usr/local/share/tast/data/chromiumos/tast/local/bundles/cros/video/data/tulip2-320x180.yuv --disable_validator

The command sometime succeed but when I run it sequentially then at some point after few attempts I start to get those timeout errors.

> 3. how about IRQ infos?
> cat /proc/interrupts | grep vcodec
> 18002000.vcodec   >> it's H.264 encoder
> 19002000.vcodec  >> it's  VP8 encoder
> 
> I was told you have  met another H.264 encoding failed before, did you find reasons about that ?

No,
But since I see that the google meetup uses the vp8 encoder I decided to test the vp8 first.

>> [   81.918747] [MTK_V4L2][ERROR] mtk_vcodec_wait_for_done_ctx:32: [3] ctx->type=1, cmd=1, wait_event_interruptible_timeout time=1000ms out 0 0!
>> [   81.931392] [MTK_VCODEC][ERROR][3]: h264_encode_frame() irq_status=0 failed
>> [   81.938470] [MTK_V4L2][ERROR] mtk_venc_worker:1219: venc_if_encode failed=-5

> 
> MT8173 latest VPUD firmware:
> https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=aaed4a8bf9a77ec68376e8d92fb218d5fdd88b59
> 

I uses the latest firmware.

Thanks,
Dafna

> Thanks
> Best Regards
> 
> -----邮件原件-----
> 发件人: Dafna Hirschfeld [mailto:dafna.hirschfeld at collabora.com]
> 发送时间: 2021年8月6日 15:49
> 收件人: Irui Wang (王瑞); linux-kernel at vger.kernel.org; linux-media at vger.kernel.org; linux-mediatek at lists.infradead.org
> 抄送: dafna3 at gmail.com; tfiga at chromium.org; Tiffany Lin (林慧珊); eizan at chromium.org; Maoguang Meng (孟毛广); kernel at collabora.com; mchehab at kernel.org; hverkuil at xs4all.nl; Yunfei Dong (董云飞); Yong Wu (吴勇); hsinyi at chromium.org; matthias.bgg at gmail.com; Andrew-CT Chen (陳智迪); acourbot at chromium.org
> 主题: Re: [PATCH 4/5] media: mtk-vcodec: Add two error cases upon vpu irq handling
> 
> 
> 
> On 06.08.21 08:58, Irui Wang (王瑞) wrote:
>> On Wed, 2021-08-04 at 16:27 +0200, Dafna Hirschfeld wrote:
>>> 1. Fail if the function mtk_vcodec_fw_map_dm_addr returns ERR 
>>> pointer.
>>> 2. Fail if the state from the vpu msg is either 
>>> VEN_IPI_MSG_ENC_STATE_ERROR or VEN_IPI_MSG_ENC_STATE_PART
>>>
>>> Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld at collabora.com>
>>> ---
>>>   drivers/media/platform/mtk-vcodec/venc_vpu_if.c | 8 ++++++++
>>>   1 file changed, 8 insertions(+)
>>>
>>> diff --git a/drivers/media/platform/mtk-vcodec/venc_vpu_if.c
>>> b/drivers/media/platform/mtk-vcodec/venc_vpu_if.c
>>> index 32dc844d16f9..234705ba7cd6 100644
>>> --- a/drivers/media/platform/mtk-vcodec/venc_vpu_if.c
>>> +++ b/drivers/media/platform/mtk-vcodec/venc_vpu_if.c
>>> @@ -17,6 +17,8 @@ static int handle_enc_init_msg(struct venc_vpu_inst 
>>> *vpu, const void *data)
>>>   vpu->vsi = mtk_vcodec_fw_map_dm_addr(vpu->ctx->dev->fw_handler,
>>>        msg->vpu_inst_addr);
>>>   
>>> +if (IS_ERR(vpu->vsi))
>>> +return PTR_ERR(vpu->vsi);
>>>   /* Firmware version field value is unspecified on MT8173. */
>>>   if (vpu->ctx->dev->venc_pdata->chip == MTK_MT8173)
>>>   return 0;
>>> @@ -42,6 +44,12 @@ static int handle_enc_encode_msg(struct 
>>> venc_vpu_inst *vpu, const void *data)
>>>   vpu->state = msg->state;
>>>   vpu->bs_size = msg->bs_size;
>>>   vpu->is_key_frm = msg->is_key_frm;
>>> +if (vpu->state == VEN_IPI_MSG_ENC_STATE_ERROR ||
>>> +    vpu->state == VEN_IPI_MSG_ENC_STATE_PART) {
>>> +mtk_vcodec_err(vpu, "bad ipi-enc-state: %s",
>>> +       vpu->state ==
>>> VEN_IPI_MSG_ENC_STATE_ERROR ? "ERR" : "PART");
>>> +return -EINVAL;
>>> +}
>> 
>> Hi Dafna,
>> 
>> This state check is useless, the enc result will check in 
>> "vpu_enc_ipi_handler".
>> 
> 
> Hi, thanks for reviewing. I see that the vpu_enc_ipi_handler only test the msg->status and I see that the states are not tested anywhere except of "skip" state in the h264 enc.
> 
> Can't there be a scenario where msg->status is ok but the state is error?
> I am testing the vp8 encoder on chromeos and at some point the encoder interrupts stop arriving so I try to figure out why and report any possible error.
> 
> Thanks,
> Dafna
> 
>> Thanks
>> 
>>>   return 0;
>>>   }
>>>   
> 
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