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coresight: etm4x: configuring include/exclude function
The include/exclude function of a tracer is applicable to address range and start/stop filters. To avoid duplication and reuse code moving the include/exclude configuration to a function of its own. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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6cccf66354
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1 changed files with 25 additions and 10 deletions
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@ -205,13 +205,6 @@ static int etm4_parse_event_config(struct etmv4_drvdata *drvdata,
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/* Always start from the default config */
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etm4_set_default(config);
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/*
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* By default the tracers are configured to trace the whole address
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* range. Narrow the field only if requested by user space.
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*/
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if (config->mode)
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etm4_config_trace_mode(config);
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/* Go from generic option to ETMv4 specifics */
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if (attr->config & BIT(ETM_OPT_CYCACC))
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config->cfg |= ETMv4_MODE_CYCACC;
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@ -581,14 +574,28 @@ static void etm4_set_default_config(struct etmv4_config *config)
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config->vinst_ctrl |= BIT(0);
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}
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static void etm4_set_comparator_filter(struct etmv4_config *config,
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u64 start, u64 stop, int comparator)
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static u64 etm4_get_access_type(struct etmv4_config *config)
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{
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u64 access_type = 0;
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/* EXLEVEL_NS, bits[12:15], always stay away from hypervisor mode. */
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/*
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* EXLEVEL_NS, bits[15:12]
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* The Exception levels are:
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* Bit[12] Exception level 0 - Application
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* Bit[13] Exception level 1 - OS
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* Bit[14] Exception level 2 - Hypervisor
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* Bit[15] Never implemented
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*
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* Always stay away from hypervisor mode.
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*/
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access_type = ETM_EXLEVEL_NS_HYP;
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if (config->mode & ETM_MODE_EXCL_KERN)
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access_type |= ETM_EXLEVEL_NS_OS;
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if (config->mode & ETM_MODE_EXCL_USER)
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access_type |= ETM_EXLEVEL_NS_APP;
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/*
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* EXLEVEL_S, bits[11:8], don't trace anything happening
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* in secure state.
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@ -597,6 +604,14 @@ static void etm4_set_comparator_filter(struct etmv4_config *config,
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ETM_EXLEVEL_S_OS |
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ETM_EXLEVEL_S_HYP);
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return access_type;
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}
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static void etm4_set_comparator_filter(struct etmv4_config *config,
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u64 start, u64 stop, int comparator)
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{
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u64 access_type = etm4_get_access_type(config);
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/* First half of default address comparator */
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config->addr_val[comparator] = start;
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config->addr_acc[comparator] = access_type;
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