On Thu, Feb 29, 2024 at 6:32 AM Atish Patra atishp@rivosinc.com wrote:
The SBI PMU extension definition is required for upcoming SBI PMU selftests.
Signed-off-by: Atish Patra atishp@rivosinc.com
LGTM.
Reviewed-by: Anup Patel anup@brainfault.org
Regards, Anup
.../selftests/kvm/include/riscv/processor.h | 67 +++++++++++++++++++ 1 file changed, 67 insertions(+)
diff --git a/tools/testing/selftests/kvm/include/riscv/processor.h b/tools/testing/selftests/kvm/include/riscv/processor.h index f75c381fa35a..a49a39c8e8d4 100644 --- a/tools/testing/selftests/kvm/include/riscv/processor.h +++ b/tools/testing/selftests/kvm/include/riscv/processor.h @@ -169,17 +169,84 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector, exception_handl enum sbi_ext_id { SBI_EXT_BASE = 0x10, SBI_EXT_STA = 0x535441,
SBI_EXT_PMU = 0x504D55,};
enum sbi_ext_base_fid { SBI_EXT_BASE_PROBE_EXT = 3, };
+enum sbi_ext_pmu_fid {
SBI_EXT_PMU_NUM_COUNTERS = 0,SBI_EXT_PMU_COUNTER_GET_INFO,SBI_EXT_PMU_COUNTER_CFG_MATCH,SBI_EXT_PMU_COUNTER_START,SBI_EXT_PMU_COUNTER_STOP,SBI_EXT_PMU_COUNTER_FW_READ,SBI_EXT_PMU_COUNTER_FW_READ_HI,SBI_EXT_PMU_SNAPSHOT_SET_SHMEM,+};
+union sbi_pmu_ctr_info {
unsigned long value;struct {unsigned long csr:12;unsigned long width:6;+#if __riscv_xlen == 32
unsigned long reserved:13;+#else
unsigned long reserved:45;+#endif
unsigned long type:1;};+};
struct sbiret { long error; long value; };
+/** General pmu event codes specified in SBI PMU extension */ +enum sbi_pmu_hw_generic_events_t {
SBI_PMU_HW_NO_EVENT = 0,SBI_PMU_HW_CPU_CYCLES = 1,SBI_PMU_HW_INSTRUCTIONS = 2,SBI_PMU_HW_CACHE_REFERENCES = 3,SBI_PMU_HW_CACHE_MISSES = 4,SBI_PMU_HW_BRANCH_INSTRUCTIONS = 5,SBI_PMU_HW_BRANCH_MISSES = 6,SBI_PMU_HW_BUS_CYCLES = 7,SBI_PMU_HW_STALLED_CYCLES_FRONTEND = 8,SBI_PMU_HW_STALLED_CYCLES_BACKEND = 9,SBI_PMU_HW_REF_CPU_CYCLES = 10,SBI_PMU_HW_GENERAL_MAX,+};
+/* SBI PMU counter types */ +enum sbi_pmu_ctr_type {
SBI_PMU_CTR_TYPE_HW = 0x0,SBI_PMU_CTR_TYPE_FW,+};
+/* Flags defined for config matching function */ +#define SBI_PMU_CFG_FLAG_SKIP_MATCH (1 << 0) +#define SBI_PMU_CFG_FLAG_CLEAR_VALUE (1 << 1) +#define SBI_PMU_CFG_FLAG_AUTO_START (1 << 2) +#define SBI_PMU_CFG_FLAG_SET_VUINH (1 << 3) +#define SBI_PMU_CFG_FLAG_SET_VSINH (1 << 4) +#define SBI_PMU_CFG_FLAG_SET_UINH (1 << 5) +#define SBI_PMU_CFG_FLAG_SET_SINH (1 << 6) +#define SBI_PMU_CFG_FLAG_SET_MINH (1 << 7)
+/* Flags defined for counter start function */ +#define SBI_PMU_START_FLAG_SET_INIT_VALUE (1 << 0) +#define SBI_PMU_START_FLAG_INIT_FROM_SNAPSHOT BIT(1)
+/* Flags defined for counter stop function */ +#define SBI_PMU_STOP_FLAG_RESET (1 << 0) +#define SBI_PMU_STOP_FLAG_TAKE_SNAPSHOT BIT(1)
struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0, unsigned long arg1, unsigned long arg2, unsigned long arg3, unsigned long arg4, -- 2.34.1