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Message-Id: <20240529185337.182722-3-rkanwal@rivosinc.com> Date: Wed, 29 May 2024 19:53:33 +0100 From: Rajnesh Kanwal <rkanwal@...osinc.com> To: linux-kernel@...r.kernel.org Cc: linux-perf-users@...r.kernel.org, linux-riscv@...ts.infradead.org, adrian.hunter@...el.com, alexander.shishkin@...ux.intel.com, ajones@...tanamicro.com, anup@...infault.org, acme@...nel.org, atishp@...osinc.com, beeman@...osinc.com, brauner@...nel.org, conor@...nel.org, heiko@...ech.de, irogers@...gle.com, mingo@...hat.com, james.clark@....com, renyu.zj@...ux.alibaba.com, jolsa@...nel.org, jisheng.teoh@...rfivetech.com, palmer@...belt.com, tech-control-transfer-records@...ts.riscv.org, will@...nel.org, kaiwenxue1@...il.com, Rajnesh Kanwal <rkanwal@...osinc.com> Subject: [PATCH RFC 2/6] riscv: perf: Add Control transfer records CSR definations. Adding CSR defines for RISCV Control Transfer Records extension [0] along with bit-field macros for each CSR. [0]: https://github.com/riscv/riscv-control-transfer-records Signed-off-by: Rajnesh Kanwal <rkanwal@...osinc.com> --- arch/riscv/include/asm/csr.h | 83 ++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h index 701963b64fc4..a80a2ee9d44e 100644 --- a/arch/riscv/include/asm/csr.h +++ b/arch/riscv/include/asm/csr.h @@ -309,6 +309,85 @@ #define CSR_SSCOUNTOVF 0xda0 +/* M-mode Control Transfer Records CSRs */ +#define CSR_MCTRCTL 0x34e + +/* S-mode Control Transfer Records CSRs */ +#define CSR_SCTRCTL 0x14e +#define CSR_SCTRSTATUS 0x14f +#define CSR_SCTRDEPTH 0x15f + +/* VS-mode Control Transfer Records CSRs */ +#define CSR_VSCTRCTL 0x24e + +/* xctrtl CSR bits. */ +#define CTRCTL_U_ENABLE _AC(0x1, UL) +#define CTRCTL_S_ENABLE _AC(0x2, UL) +#define CTRCTL_M_ENABLE _AC(0x4, UL) +#define CTRCTL_RASEMU _AC(0x80, UL) +#define CTRCTL_STE _AC(0x100, UL) +#define CTRCTL_MTE _AC(0x200, UL) +#define CTRCTL_BPFRZ _AC(0x800, UL) +#define CTRCTL_LCOFIFRZ _AC(0x1000, UL) +#define CTRCTL_EXCINH _AC(0x200000000, UL) +#define CTRCTL_INTRINH _AC(0x400000000, UL) +#define CTRCTL_TRETINH _AC(0x800000000, UL) +#define CTRCTL_NTBREN _AC(0x1000000000, UL) +#define CTRCTL_TKBRINH _AC(0x2000000000, UL) +#define CTRCTL_INDCALL_INH _AC(0x10000000000, UL) +#define CTRCTL_DIRCALL_INH _AC(0x20000000000, UL) +#define CTRCTL_INDJUMP_INH _AC(0x40000000000, UL) +#define CTRCTL_DIRJUMP_INH _AC(0x80000000000, UL) +#define CTRCTL_CORSWAP_INH _AC(0x100000000000, UL) +#define CTRCTL_RET_INH _AC(0x200000000000, UL) +#define CTRCTL_INDOJUMP_INH _AC(0x400000000000, UL) +#define CTRCTL_DIROJUMP_INH _AC(0x800000000000, UL) + +/* sctrstatus CSR bits. */ +#define SCTRSTATUS_WRPTR_MASK 0xFF +#define SCTRSTATUS_FROZEN _AC(0x80000000, UL) + +#ifdef CONFIG_RISCV_M_MODE +#define CTRCTL_KERNEL_ENABLE CTRCTL_M_ENABLE +#else +#define CTRCTL_KERNEL_ENABLE CTRCTL_S_ENABLE +#endif + +/* sctrdepth CSR bits. */ +#define SCTRDEPTH_MASK 0x7 + +#define SCTRDEPTH_MIN 0x0 /* 16 Entries. */ +#define SCTRDEPTH_MAX 0x4 /* 256 Entries. */ + +/* ctrsource, ctrtarget and ctrdata CSR bits. */ +#define CTRSOURCE_VALID 0x1ULL +#define CTRTARGET_MISP 0x1ULL + +#define CTRDATA_TYPE_MASK 0xF +#define CTRDATA_CCV 0x8000 +#define CTRDATA_CCM_MASK 0xFFF0000 +#define CTRDATA_CCE_MASK 0xF0000000 + +#define CTRDATA_TYPE_NONE 0 +#define CTRDATA_TYPE_EXCEPTION 1 +#define CTRDATA_TYPE_INTERRUPT 2 +#define CTRDATA_TYPE_TRAP_RET 3 +#define CTRDATA_TYPE_NONTAKEN_BRANCH 4 +#define CTRDATA_TYPE_TAKEN_BRANCH 5 +#define CTRDATA_TYPE_RESERVED_6 6 +#define CTRDATA_TYPE_RESERVED_7 7 +#define CTRDATA_TYPE_INDIRECT_CALL 8 +#define CTRDATA_TYPE_DIRECT_CALL 9 +#define CTRDATA_TYPE_INDIRECT_JUMP 10 +#define CTRDATA_TYPE_DIRECT_JUMP 11 +#define CTRDATA_TYPE_CO_ROUTINE_SWAP 12 +#define CTRDATA_TYPE_RETURN 13 +#define CTRDATA_TYPE_OTHER_INDIRECT_JUMP 14 +#define CTRDATA_TYPE_OTHER_DIRECT_JUMP 15 + +#define CTR_ENTRIES_FIRST 0x200 +#define CTR_ENTRIES_LAST 0x2ff + #define CSR_SSTATUS 0x100 #define CSR_SIE 0x104 #define CSR_STVEC 0x105 @@ -490,6 +569,8 @@ # define CSR_TOPEI CSR_MTOPEI # define CSR_TOPI CSR_MTOPI +# define CSR_CTRCTL CSR_MCTRCTL + # define SR_IE SR_MIE # define SR_PIE SR_MPIE # define SR_PP SR_MPP @@ -520,6 +601,8 @@ # define CSR_TOPEI CSR_STOPEI # define CSR_TOPI CSR_STOPI +# define CSR_CTRCTL CSR_SCTRCTL + # define SR_IE SR_SIE # define SR_PIE SR_SPIE # define SR_PP SR_SPP -- 2.34.1
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