1 files changed, 113 insertions, 0 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c b/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c
new file mode 100644
index 0000000..08ef01c
--- /dev/null
+++ b/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2017 Etnaviv Project
+ * Copyright (C) 2017 Zodiac Inflight Innovations
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "etnaviv_gpu.h"
+
+struct etnaviv_pm_domain;
+
+struct etnaviv_pm_signal {
+	char name[64];
+	u32 data;
+
+	u32 (*sample)(struct etnaviv_gpu *gpu,
+	              const struct etnaviv_pm_domain *domain,
+	              const struct etnaviv_pm_signal *signal);
+};
+
+struct etnaviv_pm_domain {
+	char name[64];
+	u8 nr_signals;
+	const struct etnaviv_pm_signal *signal;
+};
+
+struct etnaviv_pm_domain_meta {
+	const struct etnaviv_pm_domain *domains;
+	u32 nr_domains;
+};
+
+static const struct etnaviv_pm_domain doms_3d[] = {
+};
+
+static const struct etnaviv_pm_domain doms_2d[] = {
+};
+
+static const struct etnaviv_pm_domain doms_vg[] = {
+};
+
+static const struct etnaviv_pm_domain_meta doms_meta[] = {
+	{
+		.nr_domains = ARRAY_SIZE(doms_3d),
+		.domains = &doms_3d[0]
+	},
+	{
+		.nr_domains = ARRAY_SIZE(doms_2d),
+		.domains = &doms_2d[0]
+	},
+	{
+		.nr_domains = ARRAY_SIZE(doms_vg),
+		.domains = &doms_vg[0]
+	}
+};
+
+int etnaviv_pm_query_dom(struct etnaviv_gpu *gpu,
+	struct drm_etnaviv_pm_domain *domain)
+{
+	const struct etnaviv_pm_domain_meta *meta = &doms_meta[domain->pipe];
+	const struct etnaviv_pm_domain *dom;
+
+	if (domain->iter >= meta->nr_domains)
+		return -EINVAL;
+
+	dom = meta->domains + domain->iter;
+
+	domain->id = domain->iter;
+	domain->nr_signals = dom->nr_signals;
+	strncpy(domain->name, dom->name, sizeof(domain->name));
+
+	domain->iter++;
+	if (domain->iter == meta->nr_domains)
+		domain->iter = 0xff;
+
+	return 0;
+}
+
+int etnaviv_pm_query_sig(struct etnaviv_gpu *gpu,
+	struct drm_etnaviv_pm_signal *signal)
+{
+	const struct etnaviv_pm_domain_meta *meta = &doms_meta[signal->pipe];
+	const struct etnaviv_pm_domain *dom;
+	const struct etnaviv_pm_signal *sig;
+
+	if (signal->domain >= meta->nr_domains)
+		return -EINVAL;
+
+	dom = meta->domains + signal->domain;
+
+	if (signal->iter > dom->nr_signals)
+		return -EINVAL;
+
+	sig = &dom->signal[signal->iter];
+
+	signal->id = signal->iter;
+	strncpy(signal->name, sig->name, sizeof(signal->name));
+
+	signal->iter++;
+	if (signal->iter == dom->nr_signals)
+		signal->iter = 0xffff;
+
+	return 0;
+}