Check if the selected domain and signal combination exists.
Signed-off-by: Christian Gmeiner <christian.gmeiner@xxxxxxxxx>
Reviewed-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/etnaviv/etnaviv_perfmon.c | 15 +++++++++++++++
drivers/gpu/drm/etnaviv/etnaviv_perfmon.h | 2 ++
2 files changed, 17 insertions(+)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c b/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c
index 5bc015194791..3ecedeed87bd 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c
@@ -83,3 +83,18 @@ int etnaviv_pm_query_sig(struct etnaviv_gpu *gpu,
return 0;
}
+
+int etnaviv_pm_req_validate(const struct drm_etnaviv_gem_submit_pmr *r)
+{
+ const struct etnaviv_pm_domain *dom;
+
+ if (r->domain >= ARRAY_SIZE(doms))
+ return -EINVAL;
+
+ dom = &doms[r->domain];
+
+ if (r->signal > dom->nr_signals)
+ return -EINVAL;
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_perfmon.h b/drivers/gpu/drm/etnaviv/etnaviv_perfmon.h
index 4b2b518cfd16..f20b69c942fc 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_perfmon.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_perfmon.h
@@ -40,4 +40,6 @@ int etnaviv_pm_query_dom(struct etnaviv_gpu *gpu,
int etnaviv_pm_query_sig(struct etnaviv_gpu *gpu,
struct drm_etnaviv_pm_signal *signal);
+int etnaviv_pm_req_validate(const struct drm_etnaviv_gem_submit_pmr *r);
+
#endif /* __ETNAVIV_PERFMON_H__ */
--
2.13.5
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