135 lines
2.9 KiB
C
135 lines
2.9 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <types.h>
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#include <x86/per_cpu.h>
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#include <trace.h>
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#define TRACE_CUSTOM 0xFCU
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#define TRACE_FUNC_ENTER 0xFDU
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#define TRACE_FUNC_EXIT 0xFEU
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#define TRACE_STR 0xFFU
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/* sizeof(trace_entry) == 4 x 64bit */
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struct trace_entry {
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uint64_t tsc; /* TSC */
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uint64_t id:48;
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uint8_t n_data; /* nr of data in trace_entry */
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uint8_t cpu; /* pcpu id of trace_entry */
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union {
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struct {
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uint32_t a, b, c, d;
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} fields_32;
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struct {
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uint8_t a1, a2, a3, a4;
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uint8_t b1, b2, b3, b4;
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uint8_t c1, c2, c3, c4;
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uint8_t d1, d2, d3, d4;
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} fields_8;
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struct {
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uint64_t e;
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uint64_t f;
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} fields_64;
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char str[16];
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} payload;
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} __aligned(8);
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static inline bool trace_check(uint16_t cpu_id)
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{
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if (per_cpu(sbuf, cpu_id)[ACRN_TRACE] == NULL) {
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return false;
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}
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return true;
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}
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static inline void trace_put(uint16_t cpu_id, uint32_t evid, uint32_t n_data, struct trace_entry *entry)
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{
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struct shared_buf *sbuf = per_cpu(sbuf, cpu_id)[ACRN_TRACE];
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entry->tsc = rdtsc();
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entry->id = evid;
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entry->n_data = (uint8_t)n_data;
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entry->cpu = (uint8_t)cpu_id;
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(void)sbuf_put(sbuf, (uint8_t *)entry);
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}
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void TRACE_2L(uint32_t evid, uint64_t e, uint64_t f)
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{
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struct trace_entry entry;
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uint16_t cpu_id = get_pcpu_id();
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if (!trace_check(cpu_id)) {
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return;
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}
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entry.payload.fields_64.e = e;
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entry.payload.fields_64.f = f;
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trace_put(cpu_id, evid, 2U, &entry);
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}
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void TRACE_4I(uint32_t evid, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
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{
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struct trace_entry entry;
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uint16_t cpu_id = get_pcpu_id();
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if (!trace_check(cpu_id)) {
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return;
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}
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entry.payload.fields_32.a = a;
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entry.payload.fields_32.b = b;
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entry.payload.fields_32.c = c;
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entry.payload.fields_32.d = d;
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trace_put(cpu_id, evid, 4U, &entry);
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}
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void TRACE_6C(uint32_t evid, uint8_t a1, uint8_t a2, uint8_t a3, uint8_t a4, uint8_t b1, uint8_t b2)
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{
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struct trace_entry entry;
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uint16_t cpu_id = get_pcpu_id();
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if (!trace_check(cpu_id)) {
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return;
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}
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entry.payload.fields_8.a1 = a1;
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entry.payload.fields_8.a2 = a2;
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entry.payload.fields_8.a3 = a3;
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entry.payload.fields_8.a4 = a4;
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entry.payload.fields_8.b1 = b1;
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entry.payload.fields_8.b2 = b2;
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/* payload.fields_8.b3/b4 not used, but is put in trace buf */
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trace_put(cpu_id, evid, 8U, &entry);
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}
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#define TRACE_ENTER TRACE_16STR(TRACE_FUNC_ENTER, __func__)
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#define TRACE_EXIT TRACE_16STR(TRACE_FUNC_EXIT, __func__)
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static inline void TRACE_16STR(uint32_t evid, const char name[])
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{
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struct trace_entry entry;
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uint16_t cpu_id = get_pcpu_id();
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size_t len, i;
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if (!trace_check(cpu_id)) {
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return;
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}
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entry.payload.fields_64.e = 0UL;
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entry.payload.fields_64.f = 0UL;
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len = strnlen_s(name, 20U);
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len = (len > 16U) ? 16U : len;
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for (i = 0U; i < len; i++) {
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entry.payload.str[i] = name[i];
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}
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entry.payload.str[15] = 0;
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trace_put(cpu_id, evid, 16U, &entry);
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}
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