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lib: sbi: Allow programmable counters to monitor cycle/instret events for Andes PMU

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Referencing commit 0c304b6619
("lib: sbi: Allow programmable counters to monitor cycle/instret events")
to support this functionality for Andes PMU.

Signed-off-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20250328084142.540807-1-ycliang@andestech.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Leo Yu-Chi Liang
2025-03-28 16:41:42 +08:00
committed by Anup Patel
parent 5ab908d622
commit 0442f1318e
1 changed files with 4 additions and 3 deletions
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7
lib/sbi/sbi_pmu.c
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@@ -732,12 +732,13 @@ static int pmu_ctr_find_hw(struct sbi_pmu_hart_state *phs,
return SBI_EINVAL; return SBI_EINVAL;
/** /**
* If Sscof is present try to find the programmable counter for * If Sscofpmf or Andes PMU is present, try to find
* cycle/instret as well. * the programmable counter for cycle/instret as well.
*/ */
fixed_ctr = pmu_ctr_find_fixed_hw(event_idx); fixed_ctr = pmu_ctr_find_fixed_hw(event_idx);
if (fixed_ctr >= 0 && if (fixed_ctr >= 0 &&
!sbi_hart_has_extension(scratch, SBI_HART_EXT_SSCOFPMF)) !sbi_hart_has_extension(scratch, SBI_HART_EXT_SSCOFPMF) &&
!sbi_hart_has_extension(scratch, SBI_HART_EXT_XANDESPMU))
return pmu_fixed_ctr_update_inhibit_bits(fixed_ctr, flags); return pmu_fixed_ctr_update_inhibit_bits(fixed_ctr, flags);
if (sbi_hart_priv_version(scratch) >= SBI_HART_PRIV_VER_1_11) if (sbi_hart_priv_version(scratch) >= SBI_HART_PRIV_VER_1_11)