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// SPDX-License-Identifier: GPL-2.0
/*
* HiSilicon PCIe Trace and Tuning (PTT) support
* Copyright (c) 2022 HiSilicon Technologies Co., Ltd.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <endian.h>
#include <byteswap.h>
#include <linux/bitops.h>
#include <stdarg.h>
#include "../color.h"
#include "hisi-ptt-pkt-decoder.h"
/*
* For 8DW format, the bit[31:11] of DW0 is always 0x1fffff, which can be
* used to distinguish the data format.
* 8DW format is like:
* bits [ 31:11 ][ 10:0 ]
* |---------------------------------------|-------------------|
* DW0 [ 0x1fffff ][ Reserved (0x7ff) ]
* DW1 [ Prefix ]
* DW2 [ Header DW0 ]
* DW3 [ Header DW1 ]
* DW4 [ Header DW2 ]
* DW5 [ Header DW3 ]
* DW6 [ Reserved (0x0) ]
* DW7 [ Time ]
*
* 4DW format is like:
* bits [31:30] [ 29:25 ][24][23][22][21][ 20:11 ][ 10:0 ]
* |-----|---------|---|---|---|---|-------------|-------------|
* DW0 [ Fmt ][ Type ][T9][T8][TH][SO][ Length ][ Time ]
* DW1 [ Header DW1 ]
* DW2 [ Header DW2 ]
* DW3 [ Header DW3 ]
*/
enum hisi_ptt_8dw_pkt_field_type {
HISI_PTT_8DW_CHK_AND_RSV0,
HISI_PTT_8DW_PREFIX,
HISI_PTT_8DW_HEAD0,
HISI_PTT_8DW_HEAD1,
HISI_PTT_8DW_HEAD2,
HISI_PTT_8DW_HEAD3,
HISI_PTT_8DW_RSV1,
HISI_PTT_8DW_TIME,
HISI_PTT_8DW_TYPE_MAX
};
enum hisi_ptt_4dw_pkt_field_type {
HISI_PTT_4DW_HEAD1,
HISI_PTT_4DW_HEAD2,
HISI_PTT_4DW_HEAD3,
HISI_PTT_4DW_TYPE_MAX
};
static const char * const hisi_ptt_8dw_pkt_field_name[] = {
[HISI_PTT_8DW_PREFIX] = "Prefix",
[HISI_PTT_8DW_HEAD0] = "Header DW0",
[HISI_PTT_8DW_HEAD1] = "Header DW1",
[HISI_PTT_8DW_HEAD2] = "Header DW2",
[HISI_PTT_8DW_HEAD3] = "Header DW3",
[HISI_PTT_8DW_TIME] = "Time"
};
static const char * const hisi_ptt_4dw_pkt_field_name[] = {
[HISI_PTT_4DW_HEAD1] = "Header DW1",
[HISI_PTT_4DW_HEAD2] = "Header DW2",
[HISI_PTT_4DW_HEAD3] = "Header DW3",
};
union hisi_ptt_4dw {
struct {
uint32_t format : 2;
uint32_t type : 5;
uint32_t t9 : 1;
uint32_t t8 : 1;
uint32_t th : 1;
uint32_t so : 1;
uint32_t len : 10;
uint32_t time : 11;
};
uint32_t value;
};
static void hisi_ptt_print_pkt(const unsigned char *buf, int pos, const char *desc)
{
const char *color = PERF_COLOR_BLUE;
int i;
printf(".");
color_fprintf(stdout, color, " %08x: ", pos);
for (i = 0; i < HISI_PTT_FIELD_LENTH; i++)
color_fprintf(stdout, color, "%02x ", buf[pos + i]);
for (i = 0; i < HISI_PTT_MAX_SPACE_LEN; i++)
color_fprintf(stdout, color, " ");
color_fprintf(stdout, color, " %s\n", desc);
}
static int hisi_ptt_8dw_kpt_desc(const unsigned char *buf, int pos)
{
int i;
for (i = 0; i < HISI_PTT_8DW_TYPE_MAX; i++) {
/* Do not show 8DW check field and reserved fields */
if (i == HISI_PTT_8DW_CHK_AND_RSV0 || i == HISI_PTT_8DW_RSV1) {
pos += HISI_PTT_FIELD_LENTH;
continue;
}
hisi_ptt_print_pkt(buf, pos, hisi_ptt_8dw_pkt_field_name[i]);
pos += HISI_PTT_FIELD_LENTH;
}
return hisi_ptt_pkt_size[HISI_PTT_8DW_PKT];
}
static void hisi_ptt_4dw_print_dw0(const unsigned char *buf, int pos)
{
const char *color = PERF_COLOR_BLUE;
union hisi_ptt_4dw dw0;
int i;
dw0.value = *(uint32_t *)(buf + pos);
printf(".");
color_fprintf(stdout, color, " %08x: ", pos);
for (i = 0; i < HISI_PTT_FIELD_LENTH; i++)
color_fprintf(stdout, color, "%02x ", buf[pos + i]);
for (i = 0; i < HISI_PTT_MAX_SPACE_LEN; i++)
color_fprintf(stdout, color, " ");
color_fprintf(stdout, color,
" %s %x %s %x %s %x %s %x %s %x %s %x %s %x %s %x\n",
"Format", dw0.format, "Type", dw0.type, "T9", dw0.t9,
"T8", dw0.t8, "TH", dw0.th, "SO", dw0.so, "Length",
dw0.len, "Time", dw0.time);
}
static int hisi_ptt_4dw_kpt_desc(const unsigned char *buf, int pos)
{
int i;
hisi_ptt_4dw_print_dw0(buf, pos);
pos += HISI_PTT_FIELD_LENTH;
for (i = 0; i < HISI_PTT_4DW_TYPE_MAX; i++) {
hisi_ptt_print_pkt(buf, pos, hisi_ptt_4dw_pkt_field_name[i]);
pos += HISI_PTT_FIELD_LENTH;
}
return hisi_ptt_pkt_size[HISI_PTT_4DW_PKT];
}
int hisi_ptt_pkt_desc(const unsigned char *buf, int pos, enum hisi_ptt_pkt_type type)
{
if (type == HISI_PTT_8DW_PKT)
return hisi_ptt_8dw_kpt_desc(buf, pos);
return hisi_ptt_4dw_kpt_desc(buf, pos);
}
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