aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/nvme/host/trace.c
blob: 58456de78bb2a2ca472254792ea22858faa822e2 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
// SPDX-License-Identifier: GPL-2.0
/*
 * NVM Express device driver tracepoints
 * Copyright (c) 2018 Johannes Thumshirn, SUSE Linux GmbH
 */

#include <asm/unaligned.h>
#include "trace.h"

static const char *nvme_trace_create_sq(struct trace_seq *p, u8 *cdw10)
{
	const char *ret = trace_seq_buffer_ptr(p);
	u16 sqid = get_unaligned_le16(cdw10);
	u16 qsize = get_unaligned_le16(cdw10 + 2);
	u16 sq_flags = get_unaligned_le16(cdw10 + 4);
	u16 cqid = get_unaligned_le16(cdw10 + 6);


	trace_seq_printf(p, "sqid=%u, qsize=%u, sq_flags=0x%x, cqid=%u",
			 sqid, qsize, sq_flags, cqid);
	trace_seq_putc(p, 0);

	return ret;
}

static const char *nvme_trace_create_cq(struct trace_seq *p, u8 *cdw10)
{
	const char *ret = trace_seq_buffer_ptr(p);
	u16 cqid = get_unaligned_le16(cdw10);
	u16 qsize = get_unaligned_le16(cdw10 + 2);
	u16 cq_flags = get_unaligned_le16(cdw10 + 4);
	u16 irq_vector = get_unaligned_le16(cdw10 + 6);

	trace_seq_printf(p, "cqid=%u, qsize=%u, cq_flags=0x%x, irq_vector=%u",
			 cqid, qsize, cq_flags, irq_vector);
	trace_seq_putc(p, 0);

	return ret;
}

static const char *nvme_trace_admin_identify(struct trace_seq *p, u8 *cdw10)
{
	const char *ret = trace_seq_buffer_ptr(p);
	u8 cns = cdw10[0];
	u16 ctrlid = get_unaligned_le16(cdw10 + 2);

	trace_seq_printf(p, "cns=%u, ctrlid=%u", cns, ctrlid);
	trace_seq_putc(p, 0);

	return ret;
}



static const char *nvme_trace_read_write(struct trace_seq *p, u8 *cdw10)
{
	const char *ret = trace_seq_buffer_ptr(p);
	u64 slba = get_unaligned_le64(cdw10);
	u16 length = get_unaligned_le16(cdw10 + 8);
	u16 control = get_unaligned_le16(cdw10 + 10);
	u32 dsmgmt = get_unaligned_le32(cdw10 + 12);
	u32 reftag = get_unaligned_le32(cdw10 +  16);

	trace_seq_printf(p,
			 "slba=%llu, len=%u, ctrl=0x%x, dsmgmt=%u, reftag=%u",
			 slba, length, control, dsmgmt, reftag);
	trace_seq_putc(p, 0);

	return ret;
}

static const char *nvme_trace_dsm(struct trace_seq *p, u8 *cdw10)
{
	const char *ret = trace_seq_buffer_ptr(p);

	trace_seq_printf(p, "nr=%u, attributes=%u",
			 get_unaligned_le32(cdw10),
			 get_unaligned_le32(cdw10 + 4));
	trace_seq_putc(p, 0);

	return ret;
}

static const char *nvme_trace_common(struct trace_seq *p, u8 *cdw10)
{
	const char *ret = trace_seq_buffer_ptr(p);

	trace_seq_printf(p, "cdw10=%*ph", 24, cdw10);
	trace_seq_putc(p, 0);

	return ret;
}

const char *nvme_trace_parse_admin_cmd(struct trace_seq *p,
				       u8 opcode, u8 *cdw10)
{
	switch (opcode) {
	case nvme_admin_create_sq:
		return nvme_trace_create_sq(p, cdw10);
	case nvme_admin_create_cq:
		return nvme_trace_create_cq(p, cdw10);
	case nvme_admin_identify:
		return nvme_trace_admin_identify(p, cdw10);
	default:
		return nvme_trace_common(p, cdw10);
	}
}

const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p,
				     u8 opcode, u8 *cdw10)
{
	switch (opcode) {
	case nvme_cmd_read:
	case nvme_cmd_write:
	case nvme_cmd_write_zeroes:
		return nvme_trace_read_write(p, cdw10);
	case nvme_cmd_dsm:
		return nvme_trace_dsm(p, cdw10);
	default:
		return nvme_trace_common(p, cdw10);
	}
}

const char *nvme_trace_disk_name(struct trace_seq *p, char *name)
{
	const char *ret = trace_seq_buffer_ptr(p);

	if (*name)
		trace_seq_printf(p, "disk=%s, ", name);
	trace_seq_putc(p, 0);

	return ret;
}
EXPORT_SYMBOL_GPL(nvme_trace_disk_name);

EXPORT_TRACEPOINT_SYMBOL_GPL(nvme_sq);