diff options
| author | Mike Leach <mike.leach@linaro.org> | 2019-11-04 11:12:44 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-04 21:57:54 +0100 |
| commit | 1b6b0e087fc7c63ebaf9f78c69c7fdecb5fa8cd0 (patch) | |
| tree | e35099526b09fad04d859108e3c86ca8df302e01 /drivers/hwtracing/coresight/coresight-etm4x.c | |
| parent | 75198a7d4c0c3ee75f81ee2dbe908d9082ab4206 (diff) | |
coresight: etm4x: Fix issues with start-stop logic.
Fixes the following issues when using the ETMv4 start-stop logic.
1) Setting a start or a stop address should not automatically set the
start-stop status to 'on'. The value set by the user in 'mode' must
be respected or start instances could be missed.
2) Missing API for controlling TRCVIPCSSCTLR - start stop control by
PE comparators.
3) Default ETM configuration sets a trace all range, and correctly sets
the start-stop status bit. This was not being correctly reflected in
the 'mode' parameter.
Signed-off-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20191104181251.26732-8-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-etm4x.c')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-etm4x.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c index efe120925f9d..d5148afdbe80 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.c +++ b/drivers/hwtracing/coresight/coresight-etm4x.c @@ -887,6 +887,7 @@ static void etm4_set_default_filter(struct etmv4_config *config) * in the started state */ config->vinst_ctrl |= BIT(9); + config->mode |= ETM_MODE_VIEWINST_STARTSTOP; /* No start-stop filtering for ViewInst */ config->vissctlr = 0x0; |