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authorPalmer Dabbelt <palmer@rivosinc.com>2022-08-11 15:04:02 -0700
committerPalmer Dabbelt <palmer@rivosinc.com>2022-08-12 07:17:38 -0700
commit9801002f76c63327cae6e90097d3d0afb1e1b562 (patch)
tree5ed9a44c151cb710b7c7e8343cb2e59e27443f8d /arch
parent7ab52f75a9cf7fed7ba85802b986825dd72df641 (diff)
parentf829ee7595b5e9a9e5e1cc802224391c61072b38 (diff)
downloadlinux-9801002f76c63327cae6e90097d3d0afb1e1b562.tar.bz2
perf: riscv_pmu{,_sbi}: Miscallenous improvement & fixes
A series of mostly-independent fixes and cleanups for the RISC-V PMU drivers. Link: https://lore.kernel.org/lkml/CAAhSdy23vE8+HxU5Jxy2rBMjy3rBTrJt_4sriuROac_sEESSVw@mail.gmail.com/T/#m9de15aef1b65ae6155fa33ea1239578ef463c2a2 * palmer/riscv-pmu: RISC-V: Improve SBI definitions RISC-V: Move counter info definition to sbi header file RISC-V: Fix SBI PMU calls for RV32 RISC-V: Update user page mapping only once during start RISC-V: Fix counter restart during overflow for RV32
Diffstat (limited to 'arch')
-rw-r--r--arch/riscv/include/asm/sbi.h32
1 files changed, 30 insertions, 2 deletions
diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
index 9e3c2cf1edaf..2a0ef738695e 100644
--- a/arch/riscv/include/asm/sbi.h
+++ b/arch/riscv/include/asm/sbi.h
@@ -122,7 +122,21 @@ enum sbi_ext_pmu_fid {
SBI_EXT_PMU_COUNTER_FW_READ,
};
-#define RISCV_PMU_RAW_EVENT_MASK GENMASK_ULL(55, 0)
+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;
+ };
+};
+
+#define RISCV_PMU_RAW_EVENT_MASK GENMASK_ULL(47, 0)
#define RISCV_PMU_RAW_EVENT_IDX 0x20000
/** General pmu event codes specified in SBI PMU extension */
@@ -189,12 +203,26 @@ enum sbi_pmu_ctr_type {
SBI_PMU_CTR_TYPE_FW,
};
+/* Helper macros to decode event idx */
+#define SBI_PMU_EVENT_IDX_OFFSET 20
+#define SBI_PMU_EVENT_IDX_MASK 0xFFFFF
+#define SBI_PMU_EVENT_IDX_CODE_MASK 0xFFFF
+#define SBI_PMU_EVENT_IDX_TYPE_MASK 0xF0000
+#define SBI_PMU_EVENT_RAW_IDX 0x20000
+#define SBI_PMU_FIXED_CTR_MASK 0x07
+
+#define SBI_PMU_EVENT_CACHE_ID_CODE_MASK 0xFFF8
+#define SBI_PMU_EVENT_CACHE_OP_ID_CODE_MASK 0x06
+#define SBI_PMU_EVENT_CACHE_RESULT_ID_CODE_MASK 0x01
+
+#define SBI_PMU_EVENT_IDX_INVALID 0xFFFFFFFF
+
/* 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_VSNH (1 << 4)
+#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)