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cpu_per_start now arbitrarily associates perf counter with event

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This commit is contained in:
Luca Valente 2021-05-18 19:48:58 +02:00
parent 7ffc795560
commit 0014e6f910
1 changed files with 16 additions and 0 deletions
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16
include/hal/cv32e40p/cv32e40p.h
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@ -296,7 +296,23 @@ static inline void cpu_perf_conf(unsigned int confMask)
* the rest of the config can be given through conf parameter */
static inline void cpu_perf_start() {
#ifndef PLP_NO_PERF_COUNTERS
// enable all counters
asm volatile("csrc 0x320, %0" : : "r"(0xffffffff));
// arbitrary association of one event to one counter,
// just the implemented ones will increase
asm volatile("csrw 0x323, %0" : : "r"(1<<CSR_PCER_LD_STALL));
asm volatile("csrw 0x324, %0" : : "r"(1<<CSR_PCER_JMP_STALL));
asm volatile("csrw 0x325, %0" : : "r"(1<<CSR_PCER_IMISS));
asm volatile("csrw 0x326, %0" : : "r"(1<<CSR_PCER_LD));
asm volatile("csrw 0x327, %0" : : "r"(1<<CSR_PCER_ST));
asm volatile("csrw 0x328, %0" : : "r"(1<<CSR_PCER_JUMP));
asm volatile("csrw 0x329, %0" : : "r"(1<<CSR_PCER_BRANCH));
asm volatile("csrw 0x32A, %0" : : "r"(1<<CSR_PCER_TAKEN_BRANCH));
asm volatile("csrw 0x32B, %0" : : "r"(1<<CSR_PCER_COMP_INSTR));
asm volatile("csrw 0x32C, %0" : : "r"(1<<CSR_PCER_PIPE_STALL));
asm volatile("csrw 0x32D, %0" : : "r"(1<<CSR_PCER_APU_TYPE));
asm volatile("csrw 0x32E, %0" : : "r"(1<<CSR_PCER_APU_CONT));
asm volatile("csrw 0x32F, %0" : : "r"(1<<CSR_PCER_APU_WB));
#endif
}