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| author | Peter Ujfalusi <peter.ujfalusi@linux.intel.com> | 2022-09-09 14:43:30 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-09-09 18:48:48 +0100 |
| commit | f4ea22f7aa7536560097d765be56445933d07e0d (patch) | |
| tree | d43f6b698ee8114389ebc0cf395ea1d122d439c4 /sound/soc/sof/ipc4.c | |
| parent | a5d0147ac9f8ea6c08d00b28f0468c9cb3fdfde8 (diff) | |
| download | lwn-f4ea22f7aa7536560097d765be56445933d07e0d.tar.gz lwn-f4ea22f7aa7536560097d765be56445933d07e0d.zip | |
ASoC: SOF: ipc4: Add support for mtrace log extraction
One of the debugging/logging features for an IPC4 based firmware is the use
of the debug window to deliver log messages to host via the shared SRAM.
The initial implementation of the mtrace supports only TGL/MTL style of
logging, but can be extended to support other types, like APL, SKL, CNL,
etc.
The window is split into 16 'slots' where the first slot contains the
descriptors for the remaining 15 slots.
Each DSP core logs to a separate slot and the slot allocation is not fixed,
we can not assume that the first slot is always used by core0 for example.
The firmware sends LOG_BUFFER_STATUS message when new log batch is
available from one of the cores (after it updated the write_ptr in the
given slot).
Host should update the read_ptr in the same slot when it has taken out log
data.
The patch also updates the sof_ipc4_fw_data struct with parameters needed
for the mtrace to be enabled and used safely.
Co-developed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Rander Wang <rander.wang@intel.com>
Co-developed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220909114332.31393-6-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof/ipc4.c')
| -rw-r--r-- | sound/soc/sof/ipc4.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/soc/sof/ipc4.c b/sound/soc/sof/ipc4.c index 4f7ec18ae7fa..0d830020556d 100644 --- a/sound/soc/sof/ipc4.c +++ b/sound/soc/sof/ipc4.c @@ -589,6 +589,9 @@ static void sof_ipc4_rx_msg(struct snd_sof_dev *sdev) case SOF_IPC4_NOTIFY_RESOURCE_EVENT: data_size = sizeof(struct sof_ipc4_notify_resource_data); break; + case SOF_IPC4_NOTIFY_LOG_BUFFER_STATUS: + sof_ipc4_mtrace_update_pos(sdev, SOF_IPC4_LOG_CORE_GET(ipc4_msg->primary)); + break; default: dev_dbg(sdev->dev, "Unhandled DSP message: %#x|%#x\n", ipc4_msg->primary, ipc4_msg->extension); @@ -662,4 +665,5 @@ const struct sof_ipc_ops ipc4_ops = { .fw_loader = &ipc4_loader_ops, .tplg = &ipc4_tplg_ops, .pcm = &ipc4_pcm_ops, + .fw_tracing = &ipc4_mtrace_ops, }; |