firmware: arm_scmi: Use fast channel tracing

Make use of SCMI fast channel event tracing.

Link: https://lore.kernel.org/r/20220704102241.2988447-7-cristian.marussi@arm.comSigned-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

drivers/firmware/arm_scmi/perf.c

@@ -16,6 +16,8 @@
 #include <linux/scmi_protocol.h>
 #include <linux/sort.h>
 
+#include <trace/events/scmi.h>
+
 #include "protocols.h"
 #include "notify.h"
 
@@ -363,6 +365,8 @@ static int scmi_perf_limits_set(const struct scmi_protocol_handle *ph,
 	if (dom->fc_info && dom->fc_info[PERF_FC_LIMIT].set_addr) {
 		struct scmi_fc_info *fci = &dom->fc_info[PERF_FC_LIMIT];
 
+		trace_scmi_fc_call(SCMI_PROTOCOL_PERF, PERF_LIMITS_SET,
+				   domain, min_perf, max_perf);
 		iowrite32(max_perf, fci->set_addr);
 		iowrite32(min_perf, fci->set_addr + 4);
 		ph->hops->fastchannel_db_ring(fci->set_db);
@@ -409,6 +413,8 @@ static int scmi_perf_limits_get(const struct scmi_protocol_handle *ph,
 
 		*max_perf = ioread32(fci->get_addr);
 		*min_perf = ioread32(fci->get_addr + 4);
+		trace_scmi_fc_call(SCMI_PROTOCOL_PERF, PERF_LIMITS_GET,
+				   domain, *min_perf, *max_perf);
 		return 0;
 	}
 
@@ -446,6 +452,8 @@ static int scmi_perf_level_set(const struct scmi_protocol_handle *ph,
 	if (dom->fc_info && dom->fc_info[PERF_FC_LEVEL].set_addr) {
 		struct scmi_fc_info *fci = &dom->fc_info[PERF_FC_LEVEL];
 
+		trace_scmi_fc_call(SCMI_PROTOCOL_PERF, PERF_LEVEL_SET,
+				   domain, level, 0);
 		iowrite32(level, fci->set_addr);
 		ph->hops->fastchannel_db_ring(fci->set_db);
 		return 0;
@@ -484,6 +492,8 @@ static int scmi_perf_level_get(const struct scmi_protocol_handle *ph,
 
 	if (dom->fc_info && dom->fc_info[PERF_FC_LEVEL].get_addr) {
 		*level = ioread32(dom->fc_info[PERF_FC_LEVEL].get_addr);
+		trace_scmi_fc_call(SCMI_PROTOCOL_PERF, PERF_LEVEL_GET,
+				   domain, *level, 0);
 		return 0;
 	}
 

drivers/firmware/arm_scmi/powercap.c

@@ -12,6 +12,8 @@
 #include <linux/module.h>
 #include <linux/scmi_protocol.h>
 
+#include <trace/events/scmi.h>
+
 #include "protocols.h"
 #include "notify.h"
 
@@ -323,6 +325,8 @@ static int scmi_powercap_cap_get(const struct scmi_protocol_handle *ph,
 	dom = pi->powercaps + domain_id;
 	if (dom->fc_info && dom->fc_info[POWERCAP_FC_CAP].get_addr) {
 		*power_cap = ioread32(dom->fc_info[POWERCAP_FC_CAP].get_addr);
+		trace_scmi_fc_call(SCMI_PROTOCOL_POWERCAP, POWERCAP_CAP_GET,
+				   domain_id, *power_cap, 0);
 		return 0;
 	}
 
@@ -388,6 +392,8 @@ static int scmi_powercap_cap_set(const struct scmi_protocol_handle *ph,
 
 		iowrite32(power_cap, fci->set_addr);
 		ph->hops->fastchannel_db_ring(fci->set_db);
+		trace_scmi_fc_call(SCMI_PROTOCOL_POWERCAP, POWERCAP_CAP_SET,
+				   domain_id, power_cap, 0);
 		return 0;
 	}
 
@@ -427,6 +433,8 @@ static int scmi_powercap_pai_get(const struct scmi_protocol_handle *ph,
 	dom = pi->powercaps + domain_id;
 	if (dom->fc_info && dom->fc_info[POWERCAP_FC_PAI].get_addr) {
 		*pai = ioread32(dom->fc_info[POWERCAP_FC_PAI].get_addr);
+		trace_scmi_fc_call(SCMI_PROTOCOL_POWERCAP, POWERCAP_PAI_GET,
+				   domain_id, *pai, 0);
 		return 0;
 	}
 
@@ -469,6 +477,8 @@ static int scmi_powercap_pai_set(const struct scmi_protocol_handle *ph,
 	if (pc->fc_info && pc->fc_info[POWERCAP_FC_PAI].set_addr) {
 		struct scmi_fc_info *fci = &pc->fc_info[POWERCAP_FC_PAI];
 
+		trace_scmi_fc_call(SCMI_PROTOCOL_POWERCAP, POWERCAP_PAI_SET,
+				   domain_id, pai, 0);
 		iowrite32(pai, fci->set_addr);
 		ph->hops->fastchannel_db_ring(fci->set_db);
 		return 0;