59 lines
1021 B
C
59 lines
1021 B
C
/* Copyright (c) 2022 Intel Corporation
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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void arch_timing_init(void)
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{
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}
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void arch_timing_start(void)
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{
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}
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void arch_timing_stop(void)
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{
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}
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uint64_t arch_timing_freq_get(void)
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{
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return CONFIG_XTENSA_CCOUNT_HZ;
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}
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timing_t arch_timing_counter_get(void)
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{
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uint32_t ccount;
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__asm__ volatile ("rsr %0, CCOUNT" : "=r"(ccount));
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return ccount;
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}
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uint64_t arch_timing_cycles_get(volatile timing_t *const start,
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volatile timing_t *const end)
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{
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int64_t dt = (int64_t) (*end - *start);
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if (dt < 0) {
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dt += 0x100000000ULL;
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}
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return (uint64_t) dt;
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}
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uint64_t arch_timing_cycles_to_ns(uint64_t cycles)
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{
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return cycles * 1000000000ULL / CONFIG_XTENSA_CCOUNT_HZ;
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}
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uint64_t arch_timing_cycles_to_ns_avg(uint64_t cycles, uint32_t count)
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{
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/* Why is this an arch API? This is just math! */
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return arch_timing_cycles_to_ns(cycles) / (uint64_t) count;
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}
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uint32_t arch_timing_freq_get_mhz(void)
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{
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return arch_timing_freq_get() / 1000000ULL;
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}
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