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media: venus: provide ctx queue lock for ioctl synchronization
Video device has to provide a lock so that __video_do_ioctl() can serialize IOCTL calls. Introduce a dedicated venus_inst mutex for the purpose of vb2 operations synchronization. Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Reviewed-by: Vikash Garodia <quic_vgarodia@quicinc.com> Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Signed-off-by: Stanimir Varbanov <stanimir.k.varbanov@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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3 changed files with 10 additions and 0 deletions
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@ -411,6 +411,7 @@ enum venus_inst_modes {
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* @sequence_out: a sequence counter for output queue
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* @m2m_dev: a reference to m2m device structure
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* @m2m_ctx: a reference to m2m context structure
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* @ctx_q_lock: a lock to serialize video device ioctl calls
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* @state: current state of the instance
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* @done: a completion for sync HFI operation
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* @error: an error returned during last HFI sync operation
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@ -482,6 +483,7 @@ struct venus_inst {
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u32 sequence_out;
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struct v4l2_m2m_dev *m2m_dev;
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struct v4l2_m2m_ctx *m2m_ctx;
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struct mutex ctx_q_lock;
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unsigned int state;
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struct completion done;
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unsigned int error;
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@ -1643,6 +1643,7 @@ static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
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src_vq->allow_zero_bytesused = 1;
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src_vq->min_buffers_needed = 0;
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src_vq->dev = inst->core->dev;
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src_vq->lock = &inst->ctx_q_lock;
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ret = vb2_queue_init(src_vq);
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if (ret)
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return ret;
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@ -1657,6 +1658,7 @@ static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
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dst_vq->allow_zero_bytesused = 1;
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dst_vq->min_buffers_needed = 0;
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dst_vq->dev = inst->core->dev;
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dst_vq->lock = &inst->ctx_q_lock;
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return vb2_queue_init(dst_vq);
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}
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@ -1675,6 +1677,7 @@ static int vdec_open(struct file *file)
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INIT_LIST_HEAD(&inst->internalbufs);
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INIT_LIST_HEAD(&inst->list);
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mutex_init(&inst->lock);
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mutex_init(&inst->ctx_q_lock);
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inst->core = core;
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inst->session_type = VIDC_SESSION_TYPE_DEC;
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@ -1750,6 +1753,7 @@ static int vdec_close(struct file *file)
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ida_destroy(&inst->dpb_ids);
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hfi_session_destroy(inst);
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mutex_destroy(&inst->lock);
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mutex_destroy(&inst->ctx_q_lock);
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v4l2_fh_del(&inst->fh);
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v4l2_fh_exit(&inst->fh);
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@ -1400,6 +1400,7 @@ static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
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src_vq->allow_zero_bytesused = 1;
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src_vq->min_buffers_needed = 1;
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src_vq->dev = inst->core->dev;
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src_vq->lock = &inst->ctx_q_lock;
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if (inst->core->res->hfi_version == HFI_VERSION_1XX)
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src_vq->bidirectional = 1;
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ret = vb2_queue_init(src_vq);
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@ -1416,6 +1417,7 @@ static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
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dst_vq->allow_zero_bytesused = 1;
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dst_vq->min_buffers_needed = 1;
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dst_vq->dev = inst->core->dev;
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dst_vq->lock = &inst->ctx_q_lock;
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return vb2_queue_init(dst_vq);
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}
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@ -1448,6 +1450,7 @@ static int venc_open(struct file *file)
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INIT_LIST_HEAD(&inst->internalbufs);
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INIT_LIST_HEAD(&inst->list);
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mutex_init(&inst->lock);
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mutex_init(&inst->ctx_q_lock);
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inst->core = core;
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inst->session_type = VIDC_SESSION_TYPE_ENC;
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@ -1517,6 +1520,7 @@ static int venc_close(struct file *file)
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venc_ctrl_deinit(inst);
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hfi_session_destroy(inst);
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mutex_destroy(&inst->lock);
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mutex_destroy(&inst->ctx_q_lock);
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v4l2_fh_del(&inst->fh);
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v4l2_fh_exit(&inst->fh);
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