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lib: sbi: Implement firmware counters

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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>
This commit is contained in:
Atish Patra
2021-07-10 09:18:14 -07:00
committed by Anup Patel
parent 37f9b0f2f2
commit 764a17d852
6 changed files with 60 additions and 0 deletions
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2
lib/sbi/sbi_timer.c
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@@ -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);