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ASoC: SOF: trace: Add runtime trace filtering mechanism

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The "filter" debugfs file defines the log levels used by
the firmware and reported by sof-logger.

The file contains the formatted entry list, where each entry
follows the following syntax in plain text:
log_level uuid_id pipe_id comp_id;

This file may be updated by userspace applications such sof-logger,
or directly by the user during debugging process.

An unused (wildcard) pipe_id or comp_id value should be set to -1,
uuid_id is hexadecimal value, so when unused then should be set to 0.

When the file is modified, an IPC command is sent to FW with new
trace levels for selected components in filter elements list.

Signed-off-by: Karol Trzcinski <karolx.trzcinski@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20201204165014.2697903-1-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Karol Trzcinski
2020-12-04 18:50:14 +02:00
committed by Mark Brown
parent bb9dd3ce61
commit 8f6cfbb6d4
3 changed files with 253 additions and 0 deletions
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1
include/sound/sof/header.h
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@@ -118,6 +118,7 @@
#define SOF_IPC_TRACE_DMA_PARAMS SOF_CMD_TYPE(0x001)
#define SOF_IPC_TRACE_DMA_POSITION SOF_CMD_TYPE(0x002)
#define SOF_IPC_TRACE_DMA_PARAMS_EXT SOF_CMD_TYPE(0x003)
#define SOF_IPC_TRACE_FILTER_UPDATE SOF_CMD_TYPE(0x004) /**< ABI3.17 */
/* debug */
#define SOF_IPC_DEBUG_MEM_USAGE SOF_CMD_TYPE(0x001)