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ASoC: SOF: Intel: ipc4: Ack a received reply or notification separately 

By acking a received message we tell the DSP that we have processed the
message (reply or notification) and we are open to receive a new one.

The original implementation did this in a common code after the received
message got handled as reply or notification.

With right timing this opens up a small window when we have processed the
reply and let the other thread proceed to send a new message to the DSP,
which is allowed as the DSP is free to receive message.
But when the message is received and processed by the DSP and it wants to
send a reply it will still see that the previous message has not been
acked, so it fails to send a reply. Later the first reply got acked by the
kernel, but it is too late and the in-flight message got a timeout due to
firmware not responding (which it tried, but could not).

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Link: https://lore.kernel.org/r/20221018124008.6846-5-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Peter Ujfalusi 2022-10-18 15:40:08 +03:00 committed by Mark Brown
parent 483e4cdfb5
commit 010c050fe9
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
3 changed files with 11 additions and 8 deletions
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7
sound/soc/sof/intel/cnl.c
View File

@ -72,6 +72,7 @@ irqreturn_t cnl_ipc4_irq_thread(int irq, void *context)
spin_lock_irq(&sdev->ipc_lock);
snd_sof_ipc_get_reply(sdev);
cnl_ipc_host_done(sdev);
snd_sof_ipc_reply(sdev, data->primary);
spin_unlock_irq(&sdev->ipc_lock);
@ -88,10 +89,10 @@ irqreturn_t cnl_ipc4_irq_thread(int irq, void *context)
sdev->ipc->msg.rx_data = &notification_data;
snd_sof_ipc_msgs_rx(sdev);
sdev->ipc->msg.rx_data = NULL;
}
/* Let DSP know that we have finished processing the message */
cnl_ipc_host_done(sdev);
/* Let DSP know that we have finished processing the message */
cnl_ipc_host_done(sdev);
}
ipc_irq = true;
}

7
sound/soc/sof/intel/hda-ipc.c
View File

@ -169,6 +169,7 @@ irqreturn_t hda_dsp_ipc4_irq_thread(int irq, void *context)
spin_lock_irq(&sdev->ipc_lock);
snd_sof_ipc_get_reply(sdev);
hda_dsp_ipc_host_done(sdev);
snd_sof_ipc_reply(sdev, data->primary);
spin_unlock_irq(&sdev->ipc_lock);
@ -185,10 +186,10 @@ irqreturn_t hda_dsp_ipc4_irq_thread(int irq, void *context)
sdev->ipc->msg.rx_data = &notification_data;
snd_sof_ipc_msgs_rx(sdev);
sdev->ipc->msg.rx_data = NULL;
}
/* Let DSP know that we have finished processing the message */
hda_dsp_ipc_host_done(sdev);
/* Let DSP know that we have finished processing the message */
hda_dsp_ipc_host_done(sdev);
}
ipc_irq = true;
}

5
sound/soc/sof/intel/mtl.c
View File

@ -540,6 +540,7 @@ static irqreturn_t mtl_ipc_irq_thread(int irq, void *context)
spin_lock_irq(&sdev->ipc_lock);
snd_sof_ipc_get_reply(sdev);
mtl_ipc_host_done(sdev);
snd_sof_ipc_reply(sdev, data->primary);
spin_unlock_irq(&sdev->ipc_lock);
@ -556,9 +557,9 @@ static irqreturn_t mtl_ipc_irq_thread(int irq, void *context)
sdev->ipc->msg.rx_data = &notification_data;
snd_sof_ipc_msgs_rx(sdev);
sdev->ipc->msg.rx_data = NULL;
}
mtl_ipc_host_done(sdev);
mtl_ipc_host_done(sdev);
}
ipc_irq = true;
}