1// SPDX-License-Identifier: GPL-2.0
2/*
3 * NVM Express target device driver tracepoints
4 * Copyright (c) 2018 Johannes Thumshirn, SUSE Linux GmbH
5 */
6
7#include <asm/unaligned.h>
8#include "trace.h"
9
10static const char *nvmet_trace_admin_identify(struct trace_seq *p, u8 *cdw10)
11{
12	const char *ret = trace_seq_buffer_ptr(p);
13	u8 cns = cdw10[0];
14	u16 ctrlid = get_unaligned_le16(cdw10 + 2);
15
16	trace_seq_printf(p, "cns=%u, ctrlid=%u", cns, ctrlid);
17	trace_seq_putc(p, 0);
18
19	return ret;
20}
21
22static const char *nvmet_trace_admin_get_features(struct trace_seq *p,
23						 u8 *cdw10)
24{
25	const char *ret = trace_seq_buffer_ptr(p);
26	u8 fid = cdw10[0];
27	u8 sel = cdw10[1] & 0x7;
28	u32 cdw11 = get_unaligned_le32(cdw10 + 4);
29
30	trace_seq_printf(p, "fid=0x%x, sel=0x%x, cdw11=0x%x", fid, sel, cdw11);
31	trace_seq_putc(p, 0);
32
33	return ret;
34}
35
36static const char *nvmet_trace_get_lba_status(struct trace_seq *p,
37					     u8 *cdw10)
38{
39	const char *ret = trace_seq_buffer_ptr(p);
40	u64 slba = get_unaligned_le64(cdw10);
41	u32 mndw = get_unaligned_le32(cdw10 + 8);
42	u16 rl = get_unaligned_le16(cdw10 + 12);
43	u8 atype = cdw10[15];
44
45	trace_seq_printf(p, "slba=0x%llx, mndw=0x%x, rl=0x%x, atype=%u",
46			slba, mndw, rl, atype);
47	trace_seq_putc(p, 0);
48
49	return ret;
50}
51
52static const char *nvmet_trace_admin_set_features(struct trace_seq *p,
53						 u8 *cdw10)
54{
55	const char *ret = trace_seq_buffer_ptr(p);
56	u8 fid = cdw10[0];
57	u8 sv = cdw10[3] & 0x8;
58	u32 cdw11 = get_unaligned_le32(cdw10 + 4);
59
60	trace_seq_printf(p, "fid=0x%x, sv=0x%x, cdw11=0x%x", fid, sv, cdw11);
61	trace_seq_putc(p, 0);
62
63	return ret;
64}
65
66static const char *nvmet_trace_read_write(struct trace_seq *p, u8 *cdw10)
67{
68	const char *ret = trace_seq_buffer_ptr(p);
69	u64 slba = get_unaligned_le64(cdw10);
70	u16 length = get_unaligned_le16(cdw10 + 8);
71	u16 control = get_unaligned_le16(cdw10 + 10);
72	u32 dsmgmt = get_unaligned_le32(cdw10 + 12);
73	u32 reftag = get_unaligned_le32(cdw10 +  16);
74
75	trace_seq_printf(p,
76			 "slba=%llu, len=%u, ctrl=0x%x, dsmgmt=%u, reftag=%u",
77			 slba, length, control, dsmgmt, reftag);
78	trace_seq_putc(p, 0);
79
80	return ret;
81}
82
83static const char *nvmet_trace_dsm(struct trace_seq *p, u8 *cdw10)
84{
85	const char *ret = trace_seq_buffer_ptr(p);
86
87	trace_seq_printf(p, "nr=%u, attributes=%u",
88			 get_unaligned_le32(cdw10),
89			 get_unaligned_le32(cdw10 + 4));
90	trace_seq_putc(p, 0);
91
92	return ret;
93}
94
95static const char *nvmet_trace_common(struct trace_seq *p, u8 *cdw10)
96{
97	const char *ret = trace_seq_buffer_ptr(p);
98
99	trace_seq_printf(p, "cdw10=%*ph", 24, cdw10);
100	trace_seq_putc(p, 0);
101
102	return ret;
103}
104
105const char *nvmet_trace_parse_admin_cmd(struct trace_seq *p,
106		u8 opcode, u8 *cdw10)
107{
108	switch (opcode) {
109	case nvme_admin_identify:
110		return nvmet_trace_admin_identify(p, cdw10);
111	case nvme_admin_set_features:
112		return nvmet_trace_admin_set_features(p, cdw10);
113	case nvme_admin_get_features:
114		return nvmet_trace_admin_get_features(p, cdw10);
115	case nvme_admin_get_lba_status:
116		return nvmet_trace_get_lba_status(p, cdw10);
117	default:
118		return nvmet_trace_common(p, cdw10);
119	}
120}
121
122const char *nvmet_trace_parse_nvm_cmd(struct trace_seq *p,
123		u8 opcode, u8 *cdw10)
124{
125	switch (opcode) {
126	case nvme_cmd_read:
127	case nvme_cmd_write:
128	case nvme_cmd_write_zeroes:
129		return nvmet_trace_read_write(p, cdw10);
130	case nvme_cmd_dsm:
131		return nvmet_trace_dsm(p, cdw10);
132	default:
133		return nvmet_trace_common(p, cdw10);
134	}
135}
136
137static const char *nvmet_trace_fabrics_property_set(struct trace_seq *p,
138		u8 *spc)
139{
140	const char *ret = trace_seq_buffer_ptr(p);
141	u8 attrib = spc[0];
142	u32 ofst = get_unaligned_le32(spc + 4);
143	u64 value = get_unaligned_le64(spc + 8);
144
145	trace_seq_printf(p, "attrib=%u, ofst=0x%x, value=0x%llx",
146			 attrib, ofst, value);
147	trace_seq_putc(p, 0);
148	return ret;
149}
150
151static const char *nvmet_trace_fabrics_connect(struct trace_seq *p,
152		u8 *spc)
153{
154	const char *ret = trace_seq_buffer_ptr(p);
155	u16 recfmt = get_unaligned_le16(spc);
156	u16 qid = get_unaligned_le16(spc + 2);
157	u16 sqsize = get_unaligned_le16(spc + 4);
158	u8 cattr = spc[6];
159	u32 kato = get_unaligned_le32(spc + 8);
160
161	trace_seq_printf(p, "recfmt=%u, qid=%u, sqsize=%u, cattr=%u, kato=%u",
162			 recfmt, qid, sqsize, cattr, kato);
163	trace_seq_putc(p, 0);
164	return ret;
165}
166
167static const char *nvmet_trace_fabrics_property_get(struct trace_seq *p,
168		u8 *spc)
169{
170	const char *ret = trace_seq_buffer_ptr(p);
171	u8 attrib = spc[0];
172	u32 ofst = get_unaligned_le32(spc + 4);
173
174	trace_seq_printf(p, "attrib=%u, ofst=0x%x", attrib, ofst);
175	trace_seq_putc(p, 0);
176	return ret;
177}
178
179static const char *nvmet_trace_fabrics_common(struct trace_seq *p, u8 *spc)
180{
181	const char *ret = trace_seq_buffer_ptr(p);
182
183	trace_seq_printf(p, "specific=%*ph", 24, spc);
184	trace_seq_putc(p, 0);
185	return ret;
186}
187
188const char *nvmet_trace_parse_fabrics_cmd(struct trace_seq *p,
189		u8 fctype, u8 *spc)
190{
191	switch (fctype) {
192	case nvme_fabrics_type_property_set:
193		return nvmet_trace_fabrics_property_set(p, spc);
194	case nvme_fabrics_type_connect:
195		return nvmet_trace_fabrics_connect(p, spc);
196	case nvme_fabrics_type_property_get:
197		return nvmet_trace_fabrics_property_get(p, spc);
198	default:
199		return nvmet_trace_fabrics_common(p, spc);
200	}
201}
202
203const char *nvmet_trace_disk_name(struct trace_seq *p, char *name)
204{
205	const char *ret = trace_seq_buffer_ptr(p);
206
207	if (*name)
208		trace_seq_printf(p, "disk=%s, ", name);
209	trace_seq_putc(p, 0);
210
211	return ret;
212}
213
214const char *nvmet_trace_ctrl_name(struct trace_seq *p, struct nvmet_ctrl *ctrl)
215{
216	const char *ret = trace_seq_buffer_ptr(p);
217
218	/*
219	 * XXX: We don't know the controller instance before executing the
220	 * connect command itself because the connect command for the admin
221	 * queue will not provide the cntlid which will be allocated in this
222	 * command.  In case of io queues, the controller instance will be
223	 * mapped by the extra data of the connect command.
224	 * If we can know the extra data of the connect command in this stage,
225	 * we can update this print statement later.
226	 */
227	if (ctrl)
228		trace_seq_printf(p, "%d", ctrl->cntlid);
229	else
230		trace_seq_printf(p, "_");
231	trace_seq_putc(p, 0);
232
233	return ret;
234}
235
236