Re: [PATCH 3/4] venus: venc: Handle reset encoder state

From: Fritz Koenig
Date: Tue Nov 10 2020 - 00:48:50 EST

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On Thu, Nov 5, 2020 at 3:51 AM Stanimir Varbanov
<stanimir.varbanov@xxxxxxxxxx> wrote:
>
>
>
> On 11/4/20 12:44 PM, vgarodia@xxxxxxxxxxxxxx wrote:
> > Hi Stan,
> >
> > On 2020-11-03 06:46, Fritz Koenig wrote:
> >> On Fri, Oct 23, 2020 at 5:57 AM Stanimir Varbanov
> >> <stanimir.varbanov@xxxxxxxxxx> wrote:
> >>>
> >>> Redesign the encoder driver to be compliant with stateful encoder
> >>> spec - specifically adds handling of Reset state.
> >>>
> >>> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@xxxxxxxxxx>
> >>> ---
> >>> drivers/media/platform/qcom/venus/core.h | 10 +-
> >>> drivers/media/platform/qcom/venus/venc.c | 242 ++++++++++++++++++-----
> >>> 2 files changed, 197 insertions(+), 55 deletions(-)
> >>>
> >>> diff --git a/drivers/media/platform/qcom/venus/core.h
> >>> b/drivers/media/platform/qcom/venus/core.h
> >>> index 5c4693678e3f..294d5467a6a1 100644
> >>> --- a/drivers/media/platform/qcom/venus/core.h
> >>> +++ b/drivers/media/platform/qcom/venus/core.h
> >>> @@ -277,11 +277,11 @@ enum venus_dec_state {
> >>> };
> >>>
> >>> enum venus_enc_state {
> >>> - VENUS_ENC_STATE_DEINIT = 0,
> >>> - VENUS_ENC_STATE_INIT = 1,
> >>> - VENUS_ENC_STATE_ENCODING = 2,
> >>> - VENUS_ENC_STATE_STOPPED = 3,
> >>> - VENUS_ENC_STATE_DRAIN = 4,
> >>> + VENUS_ENC_STATE_INIT = 0,
> >>> + VENUS_ENC_STATE_ENCODING = 1,
> >>> + VENUS_ENC_STATE_STOPPED = 2,
> >>> + VENUS_ENC_STATE_DRAIN = 3,
> >>> + VENUS_ENC_STATE_RESET = 4,
> >>> };
> >>>
> >>> struct venus_ts_metadata {
> >>> diff --git a/drivers/media/platform/qcom/venus/venc.c
> >>> b/drivers/media/platform/qcom/venus/venc.c
> >>> index c6143b07914c..aa9255ddb0a5 100644
> >>> --- a/drivers/media/platform/qcom/venus/venc.c
> >>> +++ b/drivers/media/platform/qcom/venus/venc.c
> >>> @@ -565,6 +565,7 @@ static const struct v4l2_ioctl_ops venc_ioctl_ops
> >>> = {
> >>> .vidioc_enum_frameintervals = venc_enum_frameintervals,
> >>> .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
> >>> .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
> >>> + .vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
> >>> .vidioc_encoder_cmd = venc_encoder_cmd,
> >>> };
> >>>
> >>> @@ -850,6 +851,69 @@ static int venc_queue_setup(struct vb2_queue *q,
> >>> return ret;
> >>> }
> >>>
> >>> +static void venc_release_session(struct venus_inst *inst)
> >>> +{
> >>> + struct venus_core *core = inst->core;
> >>> + int ret, abort = 0;
> >>> +
> >>> + mutex_lock(&inst->lock);
> >>> +
> >>> + if (inst->enc_state != VENUS_ENC_STATE_RESET)
> >>> + dev_dbg(core->dev_enc, VDBGH "wrong state!\n");
> >>> +
> >>> + ret = hfi_session_stop(inst);
> >>> + abort |= (ret && ret != -EINVAL) ? 1 : 0;
> >>> + ret = hfi_session_unload_res(inst);
> >>> + abort |= (ret && ret != -EINVAL) ? 1 : 0;
> >>> + ret = venus_helper_unregister_bufs(inst);
> >>> + abort |= (ret && ret != -EINVAL) ? 1 : 0;
> >>> + ret = venus_helper_intbufs_free(inst);
> >>> + abort |= (ret && ret != -EINVAL) ? 1 : 0;
> >>> + ret = hfi_session_deinit(inst);
> >>> + abort |= (ret && ret != -EINVAL) ? 1 : 0;
> >>> +
> >>> + if (inst->session_error)
> >>> + abort = 1;
> >>> +
> >>> + if (abort)
> >>> + hfi_session_abort(inst);
> >>> +
> >>> + venus_pm_load_scale(inst);
> >>
> >> venus_pm_load_scale depends on inst->clk_data.codec_freq_data being
> >> set up. This occurs in venc_init_session(). I am seeing scenarios
> >> where the encoder is getting setup up, but before it is finished,
> >> teardown occurs. If this teardown occurs before
> >> inst->clk_data.codec_freq_data is initalized, a crash occurs. (also
> >> "wrong state!" is printed out)
> >
> > venus_pm_load_scale(inst) is called here to remove the votes for clock
> > and bus bandwidth. This is not needed for instances which are closed
> > just after moving them to INIT state. I have tried with below state
> > handling
> > and it works well i.e call for venus_pm_load_scale(inst) from state other
> > than the INIT state.
>
> IMO we have to check the INST state in venus_pm_load_scale(). We made
> similar check in min_loaded_core() here [1].
>
> [1] https://www.spinics.net/lists/kernel/msg3498215.html
>

I took a look at putting this check in venus_pm_load_scale. The
problem I see with that is venus_pm_load_scale is shared between
encoder and decoder. So checking for VENUS_ENC_STATE_INIT during
decode doesn't make sense. I tried to match up with the instance
states in hfi.h, but it doesn't appear to align well. Is there a hfi
state that this would work for?

-Fritz

> >
> > - venus_pm_load_scale(inst);
> > + if(inst->enc_state != VENUS_ENC_STATE_INIT)
> > + venus_pm_load_scale(inst);
> >
> >>
> >> [ 106.593198] Unable to handle kernel NULL pointer dereference at
> >> virtual address 0000000000000008
> >> [ 106.603916] Mem abort info:
> >> [ 106.608470] ESR = 0x96000006
> >> [ 106.613802] EC = 0x25: DABT (current EL), IL = 32 bits
> >> [ 106.619426] SET = 0, FnV = 0
> >> [ 106.622619] EA = 0, S1PTW = 0
> >> [ 106.625862] Data abort info:
> >> [ 106.628835] ISV = 0, ISS = 0x00000006
> >> [ 106.632785] CM = 0, WnR = 0
> >> [ 106.635850] user pgtable: 4k pages, 39-bit VAs, pgdp=000000014839f000
> >> [ 106.642472] [0000000000000008] pgd=000000016ab1f003,
> >> pud=000000016ab1f003, pmd=0000000000000000
> >> [ 106.651410] Internal error: Oops: 96000006 [#1] PREEMPT SMP
> >> [ 106.657132] Modules linked in: rfcomm algif_hash algif_skcipher
> >> af_alg uinput venus_dec venus_enc videobuf2_dma_sg hci_uart btqca
> >> venus_core qcom_spmi_adc5 qcom_spmi_temp_alarm qcom_vadc_common
> >> snd_soc_rt5682_i2c v4l2_mem2mem snd_soc_sc7180 snd_soc_rt5682
> >> snd_soc_qcom_common snd_soc_rl6231 bluetooth ecdh_generic ecc
> >> snd_soc_lpass_sc7180 snd_soc_lpass_hdmi snd_soc_lpass_cpu
> >> snd_soc_lpass_platform snd_soc_max98357a xt_MASQUERADE fuse
> >> iio_trig_sysfs cros_ec_lid_angle cros_ec_sensors cros_ec_sensors_core
> >> industrialio_triggered_buffer cros_ec_sensors_ring rmtfs_mem kfifo_buf
> >> cros_ec_sensorhub ath10k_snoc lzo_rle ath10k_core lzo_compress ath
> >> zram mac80211 ipa qmi_helpers cfg80211 qcom_q6v5_mss qcom_pil_info
> >> qcom_q6v5 qcom_common cdc_ether usbnet r8152 mii uvcvideo
> >> videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common
> >> joydev
> >> [ 106.732576] CPU: 7 PID: 3622 Comm: DrmThread Not tainted 5.4.72 #40
> >> [ 106.739004] Hardware name: Google Lazor (rev1+) (DT)
> >> [ 106.744103] pstate: 60400009 (nZCv daif +PAN -UAO)
> >> [ 106.749027] pc : load_scale_v4+0x160/0x3a4 [venus_core]
> >> [ 106.754396] lr : load_scale_v4+0x154/0x3a4 [venus_core]
> >> [ 106.759766] sp : ffffffc0120ab9e0
> >> [ 106.763171] x29: ffffffc0120ab9e0 x28: 0000000000000005
> >> [ 106.768629] x27: 0000000000000000 x26: 0000000000000000
> >> [ 106.774080] x25: 0000000000000000 x24: 000000000000001e
> >> [ 106.779530] x23: 0000000000000000 x22: ffffff80b41a8000
> >> [ 106.784980] x21: ffffffd344e97e98 x20: ffffff80cb5b8080
> >> [ 106.790431] x19: ffffff80fa3b1410 x18: 00000000ffff0a10
> >> [ 106.795881] x17: 000000000000003c x16: ffffffd398ec2e88
> >> [ 106.801329] x15: 0000000000000006 x14: ffff001000000600
> >> [ 106.806779] x13: 000000000002cca2 x12: 0000000000000000
> >> [ 106.812229] x11: 0000000000000000 x10: 0000000000000000
> >> [ 106.817679] x9 : 472cbd12793c4600 x8 : 0000000000000000
> >> [ 106.823137] x7 : 0000000000000000 x6 : ffffffd399dbcc6c
> >> [ 106.828585] x5 : 0000000000000000 x4 : 0000000000000000
> >> [ 106.834035] x3 : 0000000000000000 x2 : ffffff80ff6ae5c0
> >> [ 106.839487] x1 : ffffff80ff69e018 x0 : ffffffd344e990ac
> >> [ 106.844937] Call trace:
> >> [ 106.847460] load_scale_v4+0x160/0x3a4 [venus_core]
> >> [ 106.852473] venc_buf_cleanup+0x198/0x1f0 [venus_enc]
> >> [ 106.857656] __vb2_queue_free+0x90/0x1f4 [videobuf2_common]
> >> [ 106.863374] vb2_core_queue_release+0x3c/0x50 [videobuf2_common]
> >> [ 106.869541] vb2_queue_release+0x1c/0x28 [videobuf2_v4l2]
> >> [ 106.875082] v4l2_m2m_ctx_release+0x24/0x40 [v4l2_mem2mem]
> >> [ 106.880710] venc_close+0x24/0x78 [venus_enc]
> >> [ 106.885188] v4l2_release+0x8c/0xdc
> >> [ 106.888779] __fput+0xe0/0x214
> >> [ 106.891916] ____fput+0x1c/0x28
> >> [ 106.895148] task_work_run+0x94/0xc4
> >> [ 106.898828] do_exit+0x244/0x7c8
> >> [ 106.902147] do_group_exit+0x88/0x98
> >> [ 106.905825] get_signal+0x1cc/0x674
> >> [ 106.909415] do_notify_resume+0x134/0x1410
> >> [ 106.913619] work_pending+0x8/0x10
> >> [ 106.917119] Code: 97ffd58d f94032c8 90000020 9102b000 (f9400501)
> >> [ 106.923377] ---[ end trace a9caaf72c228e386 ]---
> >> [ 106.928767] Kernel panic - not syncing: Fatal exception
> >> [ 106.934131] SMP: stopping secondary CPUs
> >> [ 106.938347] Kernel Offset: 0x1388a00000 from 0xffffffc010000000
> >> [ 106.944426] PHYS_OFFSET: 0xffffffd900000000
> >> [ 106.948722] CPU features: 0x08102e,2a80aa18
> >> [ 106.953015] Memory Limit: none
> >>
> >>
> >> This is the debug log before the crash:
> >> [Nov 2 15:33] qcom-venus aa00000.video-codec: VenusLow : venus hw
> >> version 4.44.20a
> >> [ +0.000065] videodev: v4l2_open: video2: open (0)
> >> [ +0.000019] video2: VIDIOC_ENUM_FMT: index=0, type=vid-cap-mplane,
> >> flags=0x1, pixelformat=H264, description='H.264'
> >> [ +0.000017] video2: VIDIOC_ENUM_FMT: index=1, type=vid-cap-mplane,
> >> flags=0x1, pixelformat=VP80, description='VP8'
> >> [ +0.000042] video2: VIDIOC_ENUM_FMT: index=2, type=vid-cap-mplane,
> >> flags=0x1, pixelformat=HEVC, description='HEVC'
> >> [ +0.000030] video2: VIDIOC_ENUM_FMT: error -22: index=3,
> >> type=vid-cap-mplane, flags=0x0, pixelformat=\x00\x00\x00\x00,
> >> description=''
> >> [ +0.000068] videodev: v4l2_release: video2: release
> >> [ +0.002752] qcom-venus aa00000.video-codec: VenusLow : venus hw
> >> version 4.44.20a
> >> [ +0.000062] videodev: v4l2_open: video2: open (0)
> >> [ +0.000071] video2: VIDIOC_ENUM_FRAMESIZES: index=0,
> >> pixelformat=H264, type=3, min=96x96, max=4096x4096, step=16x16
> >> [ +0.000012] video2: VIDIOC_TRY_ENCODER_CMD: cmd=1, flags=0x0
> >> [ +0.000005] video2: VIDIOC_QUERYCAP: driver=qcom-venus,
> >> card=Qualcomm Venus video encoder, bus=platform:qcom-venus,
> >> version=0x00050448, capabilities=0x84204000, device_caps=0x04204000
> >> [ +0.001055] video2: VIDIOC_REQBUFS: count=0, type=vid-out-mplane,
> >> memory=mmap
> >> [ +0.000382] video2: VIDIOC_REQBUFS: count=0, type=vid-cap-mplane,
> >> memory=mmap
> >> [ +0.000227] video2: VIDIOC_S_FMT: type=vid-cap-mplane, width=96,
> >> height=96, format=H264, field=none, colorspace=0, num_planes=1,
> >> flags=0x0, ycbcr_enc=0, quantization=0, xfer_func=0
> >> [ +0.000027] plane 0: bytesperline=0 sizeimage=2097152
> >> [ +0.000527] video2: VIDIOC_S_FMT: type=vid-out-mplane, width=384,
> >> height=192, format=NV12, field=none, colorspace=0, num_planes=1,
> >> flags=0x0, ycbcr_enc=0, quantization=0, xfer_func=0
> >> [ +0.000024] plane 0: bytesperline=384 sizeimage=122880
> >> [ +0.000032] video2: VIDIOC_S_FMT: type=vid-out-mplane, width=384,
> >> height=192, format=NV12, field=none, colorspace=0, num_planes=1,
> >> flags=0x0, ycbcr_enc=0, quantization=0, xfer_func=0
> >> [ +0.000017] plane 0: bytesperline=384 sizeimage=122880
> >> [ +0.000024] video2: VIDIOC_S_FMT: type=vid-out-mplane, width=384,
> >> height=192, format=NV12, field=none, colorspace=0, num_planes=1,
> >> flags=0x0, ycbcr_enc=0, quantization=0, xfer_func=0
> >> [ +0.000017] plane 0: bytesperline=384 sizeimage=122880
> >> [ +0.000075] video2: VIDIOC_S_SELECTION: type=vid-out, target=0,
> >> flags=0x0, wxh=320x192, x,y=0,0
> >> [ +0.028300] video2: VIDIOC_S_FMT: type=vid-out-mplane, width=384,
> >> height=192, format=NV12, field=none, colorspace=0, num_planes=1,
> >> flags=0x0, ycbcr_enc=0, quantization=0, xfer_func=0
> >> [ +0.000036] plane 0: bytesperline=384 sizeimage=122880
> >> [ +0.000033] video2: VIDIOC_S_FMT: type=vid-out-mplane, width=384,
> >> height=192, format=NV12, field=none, colorspace=0, num_planes=1,
> >> flags=0x0, ycbcr_enc=0, quantization=0, xfer_func=0
> >> [ +0.000014] plane 0: bytesperline=384 sizeimage=122880
> >> [ +0.000020] video2: VIDIOC_S_FMT: type=vid-out-mplane, width=384,
> >> height=192, format=NV12, field=none, colorspace=0, num_planes=1,
> >> flags=0x0, ycbcr_enc=0, quantization=0, xfer_func=0
> >> [ +0.000120] plane 0: bytesperline=384 sizeimage=122880
> >> [ +0.000157] video2: VIDIOC_S_SELECTION: type=vid-out, target=0,
> >> flags=0x0, wxh=320x192, x,y=0,0
> >> [ +0.000250] video2: VIDIOC_S_EXT_CTRLS: which=0x990000, count=1,
> >> error_idx=0, request_fd=0, id/val=0x9909d7/0x1
> >> [ +0.000120] video2: VIDIOC_QUERYCTRL: error -22: id=0x990b84,
> >> type=0, name=, min/max=0/0, step=0, default=0, flags=0x00000000
> >> [ +0.000368] v4l2-ctrls: try_set_ext_ctrls: video2: video2:
> >> try_set_ext_ctrls_common failed (-22)
> >> [ +0.000087] video2: VIDIOC_S_EXT_CTRLS: error -22: which=0x990000,
> >> count=5, error_idx=5, request_fd=0, id/val=0x9909ca/0x0,
> >> id/val=0x990a62/0x33, id/val=0x990a6b/0x2, id/val=0x990a67/0xb,
> >> id/val=0x9909d8/0x1
> >> [ +0.000290] v4l2-ctrls: prepare_ext_ctrls: video2: cannot find
> >> control id 0x9909da
> >> [ +0.000010] v4l2-ctrls: try_set_ext_ctrls: video2: video2:
> >> try_set_ext_ctrls_common failed (-22)
> >> [ +0.000014] video2: VIDIOC_S_EXT_CTRLS: error -22: which=0x990000,
> >> count=2, error_idx=2, request_fd=0, id/val=0x9909da/0x1,
> >> id/val=0x9909cb/0x0
> >> [ +0.000225] video2: VIDIOC_G_FMT: type=vid-cap-mplane, width=320,
> >> height=192, format=H264, field=none, colorspace=0, num_planes=1,
> >> flags=0x0, ycbcr_enc=0, quantization=0, xfer_func=0
> >> [ +0.000028] plane 0: bytesperline=0 sizeimage=49152
> >> [ +0.002272] video2: VIDIOC_REQBUFS: count=4, type=vid-cap-mplane,
> >> memory=mmap
> >> [ +0.001661] video2: VIDIOC_QUERYBUF: 00:00:00.00000000 index=0,
> >> type=vid-cap-mplane, request_fd=0, flags=0x00004000, field=any,
> >> sequence=0, memory=mmap
> >> [ +0.000034] plane 0: bytesused=0, data_offset=0x00000000,
> >> offset/userptr=0xee18ad4840000000, length=2097152
> >> [ +0.000009] timecode=00:00:00 type=0, flags=0x00000000, frames=0,
> >> userbits=0x00000000
> >> [ +0.000142] video2: VIDIOC_QUERYBUF: 00:00:00.00000000 index=1,
> >> type=vid-cap-mplane, request_fd=0, flags=0x00004000, field=any,
> >> sequence=0, memory=mmap
> >> [ +0.000023] plane 0: bytesused=0, data_offset=0x00000000,
> >> offset/userptr=0xee18ad4840200000, length=2097152
> >> [ +0.000008] timecode=00:00:00 type=0, flags=0x00000000, frames=0,
> >> userbits=0x00000000
> >> [ +0.000409] video2: VIDIOC_QUERYBUF: 00:00:00.00000000 index=2,
> >> type=vid-cap-mplane, request_fd=0, flags=0x00004000, field=any,
> >> sequence=0, memory=mmap
> >> [ +0.000027] plane 0: bytesused=0, data_offset=0x00000000,
> >> offset/userptr=0xee18ad4840400000, length=2097152
> >> [ +0.000007] timecode=00:00:00 type=0, flags=0x00000000, frames=0,
> >> userbits=0x00000000
> >> [ +0.000233] video2: VIDIOC_QUERYBUF: 00:00:00.00000000 index=3,
> >> type=vid-cap-mplane, request_fd=0, flags=0x00004000, field=any,
> >> sequence=0, memory=mmap
> >> [ +0.000023] plane 0: bytesused=0, data_offset=0x00000000,
> >> offset/userptr=0xee18ad4840600000, length=2097152
> >> [ +0.000015] timecode=00:00:00 type=0, flags=0x00000000, frames=0,
> >> userbits=0x00000000
> >> [ +0.000288] video2: VIDIOC_S_EXT_CTRLS: which=0x990000, count=1,
> >> error_idx=0, request_fd=0, id/val=0x9909cf/0x30d40
> >> [ +0.000184] video2: VIDIOC_S_PARM: type=vid-out-mplane,
> >> capability=0x1000, outputmode=0x0, timeperframe=1/30, extendedmode=0,
> >> writebuffers=0
> >> [ +0.310832] qcom-venus-encoder aa00000.video-codec:video-encoder:
> >> VenusHigh: wrong state!
> >>
> >>> + INIT_LIST_HEAD(&inst->registeredbufs);
> >>> +
> >>> + inst->enc_state = VENUS_ENC_STATE_INIT;
> >>> +
> >>> + mutex_unlock(&inst->lock);
> >>> +
> >>> + venus_pm_release_core(inst);
> >>> +}
> >>> +
> >>> +static int venc_buf_init(struct vb2_buffer *vb)
> >>> +{
> >>> + struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
> >>> +
> >>> + inst->buf_count++;
> >>> +
> >>> + return venus_helper_vb2_buf_init(vb);
> >>> +}
> >>> +
> >>> +static void venc_buf_cleanup(struct vb2_buffer *vb)
> >>> +{
> >>> + struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
> >>> + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> >>> + struct venus_buffer *buf = to_venus_buffer(vbuf);
> >>> +
> >>> + mutex_lock(&inst->lock);
> >>> + if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
> >>> + if (!list_empty(&inst->registeredbufs))
> >>> + list_del_init(&buf->reg_list);
> >>> + mutex_unlock(&inst->lock);
> >>> +
> >>> + inst->buf_count--;
> >>> + if (!inst->buf_count)
> >>> + venc_release_session(inst);
> >>> +}
> >>> +
> >>> static int venc_verify_conf(struct venus_inst *inst)
> >>> {
> >>> enum hfi_version ver = inst->core->res->hfi_version;
> >>> @@ -881,61 +945,73 @@ static int venc_verify_conf(struct venus_inst
> >>> *inst)
> >>> static int venc_start_streaming(struct vb2_queue *q, unsigned int
> >>> count)
> >>> {
> >>> struct venus_inst *inst = vb2_get_drv_priv(q);
> >>> - int ret;
> >>> + int ret = 0;
> >>>
> >>> mutex_lock(&inst->lock);
> >>>
> >>> - if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
> >>> + if (V4L2_TYPE_IS_OUTPUT(q->type))
> >>> inst->streamon_out = 1;
> >>> else
> >>> inst->streamon_cap = 1;
> >>>
> >>> - if (!(inst->streamon_out & inst->streamon_cap)) {
> >>> - mutex_unlock(&inst->lock);
> >>> - return 0;
> >>> - }
> >>> + if (!(inst->streamon_out & inst->streamon_cap))
> >>> + goto unlock;
> >>>
> >>> - venus_helper_init_instance(inst);
> >>> + if (inst->enc_state == VENUS_ENC_STATE_INIT) {
> >>> + venus_helper_init_instance(inst);
> >>>
> >>> - inst->sequence_cap = 0;
> >>> - inst->sequence_out = 0;
> >>> + inst->sequence_cap = 0;
> >>> + inst->sequence_out = 0;
> >>>
> >>> - ret = venc_init_session(inst);
> >>> - if (ret)
> >>> - goto bufs_done;
> >>> + ret = venc_init_session(inst);
> >>> + if (ret)
> >>> + goto bufs_done;
> >>>
> >>> - ret = venus_pm_acquire_core(inst);
> >>> - if (ret)
> >>> - goto deinit_sess;
> >>> + ret = venus_pm_acquire_core(inst);
> >>> + if (ret)
> >>> + goto deinit_sess;
> >>>
> >>> - ret = venc_set_properties(inst);
> >>> - if (ret)
> >>> - goto deinit_sess;
> >>> + ret = venc_verify_conf(inst);
> >>> + if (ret)
> >>> + goto deinit_sess;
> >>>
> >>> - ret = venc_verify_conf(inst);
> >>> - if (ret)
> >>> - goto deinit_sess;
> >>> + ret = venus_helper_set_num_bufs(inst,
> >>> inst->num_input_bufs,
> >>> +
> >>> inst->num_output_bufs, 0);
> >>> + if (ret)
> >>> + goto deinit_sess;
> >>>
> >>> - ret = venus_helper_set_num_bufs(inst, inst->num_input_bufs,
> >>> - inst->num_output_bufs, 0);
> >>> - if (ret)
> >>> - goto deinit_sess;
> >>> + ret = venus_helper_vb2_start_streaming(inst);
> >>> + if (ret)
> >>> + goto deinit_sess;
> >>>
> >>> - ret = venus_helper_vb2_start_streaming(inst);
> >>> - if (ret)
> >>> - goto deinit_sess;
> >>> + venus_helper_process_initial_out_bufs(inst);
> >>> + venus_helper_process_initial_cap_bufs(inst);
> >>>
> >>> - inst->enc_state = VENUS_ENC_STATE_ENCODING;
> >>> + inst->enc_state = VENUS_ENC_STATE_ENCODING;
> >>> + } else if (inst->enc_state == VENUS_ENC_STATE_RESET &&
> >>> + V4L2_TYPE_IS_CAPTURE(q->type)) {
> >>> + ret = venus_helper_vb2_start_streaming(inst);
> >>> + if (ret)
> >>> + goto bufs_done;
> >>>
> >>> - mutex_unlock(&inst->lock);
> >>> + venus_helper_process_initial_out_bufs(inst);
> >>> + venus_helper_process_initial_cap_bufs(inst);
> >>>
> >>> - return 0;
> >>> + inst->enc_state = VENUS_ENC_STATE_ENCODING;
> >>> + } else if (inst->enc_state == VENUS_ENC_STATE_STOPPED &&
> >>> + V4L2_TYPE_IS_OUTPUT(q->type)) {
> >>> + inst->enc_state = VENUS_ENC_STATE_ENCODING;
> >>> + }
> >>> +
> >>> +unlock:
> >>> + mutex_unlock(&inst->lock);
> >>> + return ret;
> >>>
> >>> deinit_sess:
> >>> hfi_session_deinit(inst);
> >>> bufs_done:
> >>> venus_helper_buffers_done(inst, q->type, VB2_BUF_STATE_QUEUED);
> >>> - if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
> >>> + if (V4L2_TYPE_IS_OUTPUT(q->type))
> >>> inst->streamon_out = 0;
> >>> else
> >>> inst->streamon_cap = 0;
> >>> @@ -943,33 +1019,97 @@ static int venc_start_streaming(struct
> >>> vb2_queue *q, unsigned int count)
> >>> return ret;
> >>> }
> >>>
> >>> -static void venc_vb2_buf_queue(struct vb2_buffer *vb)
> >>> +static int venc_stop_capture(struct venus_inst *inst)
> >>> +{
> >>> + int ret;
> >>> +
> >>> + switch (inst->enc_state) {
> >>> + case VENUS_ENC_STATE_ENCODING:
> >>> + case VENUS_ENC_STATE_DRAIN:
> >>> + case VENUS_ENC_STATE_STOPPED:
> >>> + inst->enc_state = VENUS_ENC_STATE_RESET;
> >>> + break;
> >>> + default:
> >>> + return -EINVAL;
> >>> + }
> >>> +
> >>> + ret = hfi_session_stop(inst);
> >>> + ret |= hfi_session_unload_res(inst);
> >>> + ret |= venus_helper_unregister_bufs(inst);
> >>> + ret |= venus_helper_intbufs_free(inst);
> >>> +
> >>> + return ret;
> >>> +}
> >>> +
> >>> +static int venc_stop_output(struct venus_inst *inst)
> >>> +{
> >>> + switch (inst->enc_state) {
> >>> + case VENUS_ENC_STATE_ENCODING:
> >>> + inst->enc_state = VENUS_ENC_STATE_STOPPED;
> >>> + break;
> >>> + case VENUS_ENC_STATE_DRAIN:
> >>> + inst->enc_state = VENUS_ENC_STATE_STOPPED;
> >>> + break;
> >>> + default:
> >>> + return -EINVAL;
> >>> + }
> >>> +
> >>> + return 0;
> >>> +}
> >>> +
> >>> +static void venc_stop_streaming(struct vb2_queue *q)
> >>> +{
> >>> + struct venus_inst *inst = vb2_get_drv_priv(q);
> >>> + int ret = -EINVAL;
> >>> +
> >>> + mutex_lock(&inst->lock);
> >>> +
> >>> + if (V4L2_TYPE_IS_OUTPUT(q->type))
> >>> + ret = venc_stop_output(inst);
> >>> + else
> >>> + ret = venc_stop_capture(inst);
> >>> +
> >>> + venus_helper_buffers_done(inst, q->type, VB2_BUF_STATE_ERROR);
> >>> +
> >>> + if (ret)
> >>> + goto unlock;
> >>> +
> >>> + if (V4L2_TYPE_IS_OUTPUT(q->type))
> >>> + inst->streamon_out = 0;
> >>> + else
> >>> + inst->streamon_cap = 0;
> >>> +
> >>> +unlock:
> >>> + mutex_unlock(&inst->lock);
> >>> +}
> >>> +
> >>> +static void venc_buf_queue(struct vb2_buffer *vb)
> >>> {
> >>> struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
> >>> struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> >>> + struct v4l2_m2m_ctx *m2m_ctx = inst->m2m_ctx;
> >>>
> >>> mutex_lock(&inst->lock);
> >>>
> >>> - if (inst->enc_state == VENUS_ENC_STATE_STOPPED) {
> >>> - vbuf->sequence = inst->sequence_cap++;
> >>> - vbuf->field = V4L2_FIELD_NONE;
> >>> - vb2_set_plane_payload(vb, 0, 0);
> >>> - v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_DONE);
> >>> - mutex_unlock(&inst->lock);
> >>> - return;
> >>> - }
> >>> + v4l2_m2m_buf_queue(m2m_ctx, vbuf);
> >>> +
> >>> + if (!(inst->streamon_out && inst->streamon_cap))
> >>> + goto unlock;
> >>> +
> >>> + venus_helper_process_buf(vb);
> >>>
> >>> - venus_helper_vb2_buf_queue(vb);
> >>> +unlock:
> >>> mutex_unlock(&inst->lock);
> >>> }
> >>>
> >>> static const struct vb2_ops venc_vb2_ops = {
> >>> .queue_setup = venc_queue_setup,
> >>> - .buf_init = venus_helper_vb2_buf_init,
> >>> + .buf_init = venc_buf_init,
> >>> + .buf_cleanup = venc_buf_cleanup,
> >>> .buf_prepare = venus_helper_vb2_buf_prepare,
> >>> .start_streaming = venc_start_streaming,
> >>> - .stop_streaming = venus_helper_vb2_stop_streaming,
> >>> - .buf_queue = venc_vb2_buf_queue,
> >>> + .stop_streaming = venc_stop_streaming,
> >>> + .buf_queue = venc_buf_queue,
> >>> };
> >>>
> >>> static void venc_buf_done(struct venus_inst *inst, unsigned int
> >>> buf_type,
> >>> @@ -1025,8 +1165,12 @@ static const struct hfi_inst_ops venc_hfi_ops = {
> >>> .event_notify = venc_event_notify,
> >>> };
> >>>
> >>> +static void venc_m2m_device_run(void *priv)
> >>> +{
> >>> +}
> >>> +
> >>> static const struct v4l2_m2m_ops venc_m2m_ops = {
> >>> - .device_run = venus_helper_m2m_device_run,
> >>> + .device_run = venc_m2m_device_run,
> >>> .job_abort = venus_helper_m2m_job_abort,
> >>> };
> >>>
> >>> @@ -1098,11 +1242,9 @@ static int venc_open(struct file *file)
> >>> inst->core = core;
> >>> inst->session_type = VIDC_SESSION_TYPE_ENC;
> >>> inst->clk_data.core_id = VIDC_CORE_ID_DEFAULT;
> >>> + inst->enc_state = VENUS_ENC_STATE_INIT;
> >>> inst->core_acquired = false;
> >>>
> >>> - if (inst->enc_state == VENUS_ENC_STATE_DEINIT)
> >>> - inst->enc_state = VENUS_ENC_STATE_INIT;
> >>> -
> >>> venus_helper_init_instance(inst);
> >>>
> >>> ret = pm_runtime_get_sync(core->dev_enc);
> >>> @@ -1167,7 +1309,7 @@ static int venc_close(struct file *file)
> >>> mutex_destroy(&inst->lock);
> >>> v4l2_fh_del(&inst->fh);
> >>> v4l2_fh_exit(&inst->fh);
> >>> - inst->enc_state = VENUS_ENC_STATE_DEINIT;
> >>> +
> >>> pm_runtime_put_sync(inst->core->dev_enc);
> >>>
> >>> kfree(inst);
> >>> --
> >>> 2.17.1
> >>>
> >
> > Thanks,
> > Vikash
>
> --
> regards,
> Stan

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