From 764a17d852a8cc80050016a6e2ccdcaddd43f68c Mon Sep 17 00:00:00 2001
From: Atish Patra <atish.patra@wdc.com>
Date: Sat, 10 Jul 2021 09:18:14 -0700
Subject: lib: sbi: Implement firmware counters

RISC-V SBI v0.3 specification defines a set of firmware events that can
provide additional information about the current firmware context. All
of the firmware event monitoring are enabled now. The firmware
events must be defined as raw perf event with MSB set as specified in the
specification.

Reviewed-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
---
 lib/sbi/sbi_timer.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'lib/sbi/sbi_timer.c')

diff --git a/lib/sbi/sbi_timer.c b/lib/sbi/sbi_timer.c
index 77d6f95..2759501 100644
--- a/lib/sbi/sbi_timer.c
+++ b/lib/sbi/sbi_timer.c
@@ -12,6 +12,7 @@
 #include <sbi/sbi_error.h>
 #include <sbi/sbi_hart.h>
 #include <sbi/sbi_platform.h>
+#include <sbi/sbi_pmu.h>
 #include <sbi/sbi_scratch.h>
 #include <sbi/sbi_timer.h>
 
@@ -88,6 +89,7 @@ void sbi_timer_set_delta_upper(ulong delta_upper)
 
 void sbi_timer_event_start(u64 next_event)
 {
+	sbi_pmu_ctr_incr_fw(SBI_PMU_FW_SET_TIMER);
 	if (timer_dev && timer_dev->timer_event_start)
 		timer_dev->timer_event_start(next_event);
 	csr_clear(CSR_MIP, MIP_STIP);
-- 
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