Make it possible to access the sub-GPU component load value from user space with the perfmon infrastructure.
Signed-off-by: Christian Gmeiner <christian.gmei...@gmail.com>
---
drivers/gpu/drm/etnaviv/etnaviv_perfmon.c | 79 +++++++++++++++++++++++
1 file changed, 79 insertions(+)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c
b/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c
index 75f9db8f7bec..614d86e2802d 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c
@@ -98,6 +98,19 @@ static u32 hi_total_idle_cycle_read(struct etnaviv_gpu *gpu,
return gpu_read(gpu, reg);
}
+static u32 load_read(struct etnaviv_gpu *gpu,
+ const struct etnaviv_pm_domain *domain,
+ const struct etnaviv_pm_signal *signal)
+{
+ u32 load;
+
+ spin_lock_bh(&gpu->loadavg_spinlock);
+ load = gpu->loadavg_percentage[signal->data];
+ spin_unlock_bh(&gpu->loadavg_spinlock);
+
+ return load;
+}
+
static const struct etnaviv_pm_domain doms_3d[] = {
{
.name = "HI",
@@ -387,6 +400,72 @@ static const struct etnaviv_pm_domain doms_3d[] = {
&perf_reg_read
}
}
+ },
+ {
+ .name = "LOAD",
+ .nr_signals = 12,
+ .signal = (const struct etnaviv_pm_signal[]) {
+ {
+ "FE",
+ 0,
+ &load_read
+ },
+ {
+ "DE",
+ 1,
+ &load_read
+ },
+ {
+ "PE",
+ 2,
+ &load_read
+ },
+ {
+ "SH",
+ 3,
+ &load_read
+ },
+ {
+ "PA",
+ 4,
+ &load_read
+ },
+ {
+ "SE",
+ 5,
+ &load_read
+ },
+ {
+ "RA",
+ 6,
+ &load_read
+ },
+ {
+ "TX",
+ 7,
+ &load_read
+ },
+ {
+ "VG",
+ 8,
+ &load_read
+ },
+ {
+ "IM",
+ 9,
+ &load_read
+ },
+ {
+ "FP",
+ 10,
+ &load_read
+ },
+ {
+ "TS",
+ 11,
+ &load_read
+ }
+ }
}
};
--
2.26.2
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