[PATCH v3 7/9] firmware: arm_scmi: Use FastChannel tracing

From: Cristian Marussi
Date: Mon Jun 27 2022 - 08:31:33 EST


Make use of SCMI FastChannel event tracing.

Signed-off-by: Cristian Marussi <cristian.marussi@xxxxxxx>
---
drivers/firmware/arm_scmi/perf.c | 10 ++++++++++
drivers/firmware/arm_scmi/powercap.c | 10 ++++++++++
2 files changed, 20 insertions(+)

diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c
index 521458fda355..64ea2d2f2875 100644
--- a/drivers/firmware/arm_scmi/perf.c
+++ b/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;
}

diff --git a/drivers/firmware/arm_scmi/powercap.c b/drivers/firmware/arm_scmi/powercap.c
index ed61df6a68c4..7bd6fab35650 100644
--- a/drivers/firmware/arm_scmi/powercap.c
+++ b/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;
--
2.32.0