diff options
| author | Tao Zhang <quic_taozha@quicinc.com> | 2024-02-04 08:30:37 +0300 |
|---|---|---|
| committer | Suzuki K Poulose <suzuki.poulose@arm.com> | 2024-02-12 13:29:47 +0300 |
| commit | 2d9ab11c262e39f3bc829d0679257ab942d5878f (patch) | |
| tree | bb7bb3bc949bcc6762cc4ae70f99c87adbec779b /drivers/hwtracing/coresight/coresight-tpdm.h | |
| parent | e6d7f5252f73cf21d3676de794916204524f51b5 (diff) | |
| download | linux-2d9ab11c262e39f3bc829d0679257ab942d5878f.tar.xz | |
coresight-tpdm: Add support to configure CMB
TPDM CMB subunits support two forms of CMB data set element creation:
continuous and trace-on-change collection mode. Continuous change
creates CMB data set elements on every CMBCLK edge. Trace-on-change
creates CMB data set elements only when a new data set element differs
in value from the previous element in a CMB data set. Set CMB_CR.MODE
to 0 for continuous CMB collection mode. Set CMB_CR.MODE to 1 for
trace-on-change CMB collection mode.
Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
Signed-off-by: Jinlong Mao <quic_jinlmao@quicinc.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/1707024641-22460-7-git-send-email-quic_taozha@quicinc.com
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-tpdm.h')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tpdm.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tpdm.h b/drivers/hwtracing/coresight/coresight-tpdm.h index a442d9c6e4ac..2af92c270ed1 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.h +++ b/drivers/hwtracing/coresight/coresight-tpdm.h @@ -14,6 +14,8 @@ /* Enable bit for CMB subunit */ #define TPDM_CMB_CR_ENA BIT(0) +/* Trace collection mode for CMB subunit */ +#define TPDM_CMB_CR_MODE BIT(1) /* DSB Subunit Registers */ #define TPDM_DSB_CR (0x780) @@ -182,6 +184,14 @@ struct dsb_dataset { }; /** + * struct cmb_dataset + * @trace_mode: Dataset collection mode + */ +struct cmb_dataset { + u32 trace_mode; +}; + +/** * struct tpdm_drvdata - specifics associated to an TPDM component * @base: memory mapped base address for this component. * @dev: The device entity associated to this component. @@ -190,6 +200,7 @@ struct dsb_dataset { * @enable: enable status of the component. * @datasets: The datasets types present of the TPDM. * @dsb Specifics associated to TPDM DSB. + * @cmb Specifics associated to TPDM CMB. * @dsb_msr_num Number of MSR supported by DSB TPDM */ @@ -201,6 +212,7 @@ struct tpdm_drvdata { bool enable; unsigned long datasets; struct dsb_dataset *dsb; + struct cmb_dataset *cmb; u32 dsb_msr_num; }; |