| Message ID | 20230309131358.2259923-4-mchitale@ventanamicro.com |
|---|---|
| State | Accepted |
| Headers | show |
| Series | SBI PMU firmware counters and events improvement | expand |
On Thu, Mar 9, 2023 at 6:44 PM Mayuresh Chitale <mchitale@ventanamicro.com> wrote: > > 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> > Reviewed-by: Atish Patra <atishp@rivosinc.com> > Reviewed-by: Anup Patel <anup@brainfault.org> Applied this patch to the riscv/opensbi repo. Thanks, Anup > --- > include/sbi/sbi_ecall_interface.h | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/include/sbi/sbi_ecall_interface.h b/include/sbi/sbi_ecall_interface.h > index d448212..4597358 100644 > --- a/include/sbi/sbi_ecall_interface.h > +++ b/include/sbi/sbi_ecall_interface.h > @@ -185,6 +185,17 @@ enum sbi_pmu_fw_event_code_id { > SBI_PMU_FW_HFENCE_VVMA_ASID_SENT = 20, > SBI_PMU_FW_HFENCE_VVMA_ASID_RCVD = 21, > SBI_PMU_FW_MAX, > + /* > + * Event codes 22 to 255 are reserved for future use. > + * Event codes 256 to 65534 are reserved for SBI implementation > + * specific custom firmware events. > + */ > + SBI_PMU_FW_RESERVED_MAX = 0xFFFE, > + /* > + * Event code 0xFFFF is used for platform specific firmware > + * events where the event data contains any event specific information. > + */ > + SBI_PMU_FW_PLATFORM = 0xFFFF, > }; > > /** SBI PMU event idx type */ > -- > 2.34.1 >
diff --git a/include/sbi/sbi_ecall_interface.h b/include/sbi/sbi_ecall_interface.h index d448212..4597358 100644 --- a/include/sbi/sbi_ecall_interface.h +++ b/include/sbi/sbi_ecall_interface.h @@ -185,6 +185,17 @@ enum sbi_pmu_fw_event_code_id { SBI_PMU_FW_HFENCE_VVMA_ASID_SENT = 20, SBI_PMU_FW_HFENCE_VVMA_ASID_RCVD = 21, SBI_PMU_FW_MAX, + /* + * Event codes 22 to 255 are reserved for future use. + * Event codes 256 to 65534 are reserved for SBI implementation + * specific custom firmware events. + */ + SBI_PMU_FW_RESERVED_MAX = 0xFFFE, + /* + * Event code 0xFFFF is used for platform specific firmware + * events where the event data contains any event specific information. + */ + SBI_PMU_FW_PLATFORM = 0xFFFF, }; /** SBI PMU event idx type */