Now that we can identify an PMCG implementation through the parent SMMUv3
implementation, add support for IMP DEF events.
For each new implementation supported, we add a new attr_grps structure
for a particular implementation and do lookup matching based on the
parent SMMUv3 IIDR. This could maybe be optimised in future to reduce
structures required.
For now, only the l1_tlb event is added for HiSilicon hip08 platform.
This platform supports many more IMP DEF events, but I need something
better than the electronically translated description of the event to
support.
Signed-off-by: John Garry <john.ga...@huawei.com>
---
drivers/perf/arm_smmuv3_pmu.c | 54 ++++++++++++++++++++++++++++++++++-
1 file changed, 53 insertions(+), 1 deletion(-)
diff --git a/drivers/perf/arm_smmuv3_pmu.c b/drivers/perf/arm_smmuv3_pmu.c
index f702898c695d..11f28ba5fae0 100644
--- a/drivers/perf/arm_smmuv3_pmu.c
+++ b/drivers/perf/arm_smmuv3_pmu.c
@@ -132,6 +132,8 @@ SMMU_PMU_EVENT_ATTR_EXTRACTOR(filter_stream_id, config1, 0,
31);
SMMU_PMU_EVENT_ATTR_EXTRACTOR(filter_span, config1, 32, 32);
SMMU_PMU_EVENT_ATTR_EXTRACTOR(filter_enable, config1, 33, 33);
+#define PARENT_SMMU_IIDR_HISI_HIP08 (0x30736)
+
static inline void smmu_pmu_enable(struct pmu *pmu)
{
struct smmu_pmu *smmu_pmu = to_smmu_pmu(pmu);
@@ -505,6 +507,21 @@ static struct attribute *smmu_pmu_events[] = {
NULL
};
+SMMU_EVENT_ATTR(l1_tlb, 0x8a);
+
+static struct attribute *smmu_pmu_events_hip08[] = {
+ &smmu_event_attr_cycles.attr.attr,
+ &smmu_event_attr_transaction.attr.attr,
+ &smmu_event_attr_tlb_miss.attr.attr,
+ &smmu_event_attr_config_cache_miss.attr.attr,
+ &smmu_event_attr_trans_table_walk_access.attr.attr,
+ &smmu_event_attr_config_struct_access.attr.attr,
+ &smmu_event_attr_pcie_ats_trans_rq.attr.attr,
+ &smmu_event_attr_pcie_ats_trans_passed.attr.attr,
+ &smmu_event_attr_l1_tlb.attr.attr,
+ NULL
+};
+
static umode_t smmu_pmu_event_is_visible(struct kobject *kobj,
struct attribute *attr, int unused)
{
@@ -514,7 +531,10 @@ static umode_t smmu_pmu_event_is_visible(struct kobject
*kobj,
pmu_attr = container_of(attr, struct perf_pmu_events_attr, attr.attr);
- if (test_bit(pmu_attr->id, smmu_pmu->supported_events))
+ if (pmu_attr->id < SMMU_PMCG_ARCH_MAX_EVENTS &&
+ test_bit(pmu_attr->id, smmu_pmu->supported_events))
+ return attr->mode;
+ else if (pmu_attr->id >= SMMU_PMCG_ARCH_MAX_EVENTS)
return attr->mode;
return 0;
@@ -526,6 +546,12 @@ static struct attribute_group smmu_pmu_events_group = {
.is_visible = smmu_pmu_event_is_visible,
};
+static struct attribute_group smmu_pmu_events_group_hip08 = {
+ .name = "events",
+ .attrs = smmu_pmu_events_hip08,
+ .is_visible = smmu_pmu_event_is_visible,
+};
+
/* Formats */
PMU_FORMAT_ATTR(event, "config:0-15");
PMU_FORMAT_ATTR(filter_stream_id, "config1:0-31");
@@ -552,8 +578,34 @@ static const struct attribute_group *smmu_pmu_attr_grps[]
= {
NULL
};
+static const struct attribute_group *smmu_pmu_attr_grps_hip08[] = {
+ &smmu_pmu_cpumask_group,
+ &smmu_pmu_events_group_hip08,
+ &smmu_pmu_format_group,
+ NULL
+};
+
+struct smmu_pmu_attr_grps_custom {
+ u32 parent_smmu_iidr;
+ const struct attribute_group **attr_grps;
+} smmu_pmu_attr_custom_grps[] = {
+ {
+ .parent_smmu_iidr = PARENT_SMMU_IIDR_HISI_HIP08,
+ .attr_grps = smmu_pmu_attr_grps_hip08,
+ },
+};
+
static const struct attribute_group **smmu_pmu_lookup_attr_groups(u32
parent_smmu_iidr)
{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(smmu_pmu_attr_custom_grps); i++) {
+ struct smmu_pmu_attr_grps_custom *c =
&smmu_pmu_attr_custom_grps[i];
+
+ if (c->parent_smmu_iidr == parent_smmu_iidr)
+ return c->attr_grps;
+ }
+
return smmu_pmu_attr_grps;
}
--
2.17.1
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