diff options
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-etm4x.c | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c index aca624010b9f..1044ed609d81 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.c +++ b/drivers/hwtracing/coresight/coresight-etm4x.c @@ -205,13 +205,6 @@ static int etm4_parse_event_config(struct etmv4_drvdata *drvdata, /* Always start from the default config */ etm4_set_default(config); - /* - * By default the tracers are configured to trace the whole address - * range. Narrow the field only if requested by user space. - */ - if (config->mode) - etm4_config_trace_mode(config); - /* Go from generic option to ETMv4 specifics */ if (attr->config & BIT(ETM_OPT_CYCACC)) config->cfg |= ETMv4_MODE_CYCACC; @@ -581,14 +574,28 @@ static void etm4_set_default_config(struct etmv4_config *config) config->vinst_ctrl |= BIT(0); } -static void etm4_set_comparator_filter(struct etmv4_config *config, - u64 start, u64 stop, int comparator) +static u64 etm4_get_access_type(struct etmv4_config *config) { u64 access_type = 0; - /* EXLEVEL_NS, bits[12:15], always stay away from hypervisor mode. */ + /* + * EXLEVEL_NS, bits[15:12] + * The Exception levels are: + * Bit[12] Exception level 0 - Application + * Bit[13] Exception level 1 - OS + * Bit[14] Exception level 2 - Hypervisor + * Bit[15] Never implemented + * + * Always stay away from hypervisor mode. + */ access_type = ETM_EXLEVEL_NS_HYP; + if (config->mode & ETM_MODE_EXCL_KERN) + access_type |= ETM_EXLEVEL_NS_OS; + + if (config->mode & ETM_MODE_EXCL_USER) + access_type |= ETM_EXLEVEL_NS_APP; + /* * EXLEVEL_S, bits[11:8], don't trace anything happening * in secure state. @@ -597,6 +604,14 @@ static void etm4_set_comparator_filter(struct etmv4_config *config, ETM_EXLEVEL_S_OS | ETM_EXLEVEL_S_HYP); + return access_type; +} + +static void etm4_set_comparator_filter(struct etmv4_config *config, + u64 start, u64 stop, int comparator) +{ + u64 access_type = etm4_get_access_type(config); + /* First half of default address comparator */ config->addr_val[comparator] = start; config->addr_acc[comparator] = access_type; |