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[3/3] lib: sbi_pmu: Reserve space for implementation specific firmware events

Message ID 20230207165326.3205728-4-mchitale@ventanamicro.com
State Superseded
Headers show
Series SBI PMU firmware counters and events improvement | expand

Commit Message

Mayuresh Chitale Feb. 7, 2023, 4:53 p.m. UTC 
We reserve space for SBI implementation specific custom firmware
events which can be used by M-mode firmwares and HS-mode hypervisors
for their own use. This reserved space is intentionally large to
ensure that SBI implementation has enough space to accommodate
platform specific firmware events as well.

Signed-off-by: Mayuresh Chitale <mchitale@ventanamicro.com>
---
 include/sbi/sbi_ecall_interface.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
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Patch

diff --git a/include/sbi/sbi_ecall_interface.h b/include/sbi/sbi_ecall_interface.h
index f5d6667..32923a8 100644
--- a/include/sbi/sbi_ecall_interface.h
+++ b/include/sbi/sbi_ecall_interface.h
@@ -182,7 +182,11 @@  enum sbi_pmu_fw_event_code_id {
 	SBI_PMU_FW_HFENCE_VVMA_RCVD	= 19,
 	SBI_PMU_FW_HFENCE_VVMA_ASID_SENT = 20,
 	SBI_PMU_FW_HFENCE_VVMA_ASID_RCVD = 21,
-	SBI_PMU_FW_MAX,
+	/*
+	 * Event codes from 22 to 127 are reserved for
+	 * SBI implementation specific custom firmware events.
+	 */
+	SBI_PMU_FW_MAX = 128,
 };
 
 /** SBI PMU event idx type */