1/*
2 * libata-trace.c - trace functions for libata
3 *
4 * Copyright 2015 Hannes Reinecke
5 * Copyright 2015 SUSE Linux GmbH
6 *
7 *  This program is free software; you can redistribute it and/or modify
8 *  it under the terms of the GNU General Public License as published by
9 *  the Free Software Foundation; either version 2, or (at your option)
10 *  any later version.
11 *
12 *  This program is distributed in the hope that it will be useful,
13 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
14 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 *  GNU General Public License for more details.
16 *
17 *  You should have received a copy of the GNU General Public License
18 *  along with this program; see the file COPYING.  If not, write to
19 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22#include <linux/kernel.h>
23#include <linux/trace_seq.h>
24#include <trace/events/libata.h>
25
26const char *
27libata_trace_parse_status(struct trace_seq *p, unsigned char status)
28{
29	const char *ret = trace_seq_buffer_ptr(p);
30
31	trace_seq_printf(p, "{ ");
32	if (status & ATA_BUSY)
33		trace_seq_printf(p, "BUSY ");
34	if (status & ATA_DRDY)
35		trace_seq_printf(p, "DRDY ");
36	if (status & ATA_DF)
37		trace_seq_printf(p, "DF ");
38	if (status & ATA_DSC)
39		trace_seq_printf(p, "DSC ");
40	if (status & ATA_DRQ)
41		trace_seq_printf(p, "DRQ ");
42	if (status & ATA_CORR)
43		trace_seq_printf(p, "CORR ");
44	if (status & ATA_SENSE)
45		trace_seq_printf(p, "SENSE ");
46	if (status & ATA_ERR)
47		trace_seq_printf(p, "ERR ");
48	trace_seq_putc(p, '}');
49	trace_seq_putc(p, 0);
50
51	return ret;
52}
53
54const char *
55libata_trace_parse_eh_action(struct trace_seq *p, unsigned int eh_action)
56{
57	const char *ret = trace_seq_buffer_ptr(p);
58
59	trace_seq_printf(p, "%x", eh_action);
60	if (eh_action) {
61		trace_seq_printf(p, "{ ");
62		if (eh_action & ATA_EH_REVALIDATE)
63			trace_seq_printf(p, "REVALIDATE ");
64		if (eh_action & (ATA_EH_SOFTRESET | ATA_EH_HARDRESET))
65			trace_seq_printf(p, "RESET ");
66		else if (eh_action & ATA_EH_SOFTRESET)
67			trace_seq_printf(p, "SOFTRESET ");
68		else if (eh_action & ATA_EH_HARDRESET)
69			trace_seq_printf(p, "HARDRESET ");
70		if (eh_action & ATA_EH_ENABLE_LINK)
71			trace_seq_printf(p, "ENABLE_LINK ");
72		if (eh_action & ATA_EH_PARK)
73			trace_seq_printf(p, "PARK ");
74		trace_seq_putc(p, '}');
75	}
76	trace_seq_putc(p, 0);
77
78	return ret;
79}
80
81const char *
82libata_trace_parse_eh_err_mask(struct trace_seq *p, unsigned int eh_err_mask)
83{
84	const char *ret = trace_seq_buffer_ptr(p);
85
86	trace_seq_printf(p, "%x", eh_err_mask);
87	if (eh_err_mask) {
88		trace_seq_printf(p, "{ ");
89		if (eh_err_mask & AC_ERR_DEV)
90			trace_seq_printf(p, "DEV ");
91		if (eh_err_mask & AC_ERR_HSM)
92			trace_seq_printf(p, "HSM ");
93		if (eh_err_mask & AC_ERR_TIMEOUT)
94			trace_seq_printf(p, "TIMEOUT ");
95		if (eh_err_mask & AC_ERR_MEDIA)
96			trace_seq_printf(p, "MEDIA ");
97		if (eh_err_mask & AC_ERR_ATA_BUS)
98			trace_seq_printf(p, "ATA_BUS ");
99		if (eh_err_mask & AC_ERR_HOST_BUS)
100			trace_seq_printf(p, "HOST_BUS ");
101		if (eh_err_mask & AC_ERR_SYSTEM)
102			trace_seq_printf(p, "SYSTEM ");
103		if (eh_err_mask & AC_ERR_INVALID)
104			trace_seq_printf(p, "INVALID ");
105		if (eh_err_mask & AC_ERR_OTHER)
106			trace_seq_printf(p, "OTHER ");
107		if (eh_err_mask & AC_ERR_NODEV_HINT)
108			trace_seq_printf(p, "NODEV_HINT ");
109		if (eh_err_mask & AC_ERR_NCQ)
110			trace_seq_printf(p, "NCQ ");
111		trace_seq_putc(p, '}');
112	}
113	trace_seq_putc(p, 0);
114
115	return ret;
116}
117
118const char *
119libata_trace_parse_qc_flags(struct trace_seq *p, unsigned int qc_flags)
120{
121	const char *ret = trace_seq_buffer_ptr(p);
122
123	trace_seq_printf(p, "%x", qc_flags);
124	if (qc_flags) {
125		trace_seq_printf(p, "{ ");
126		if (qc_flags & ATA_QCFLAG_ACTIVE)
127			trace_seq_printf(p, "ACTIVE ");
128		if (qc_flags & ATA_QCFLAG_DMAMAP)
129			trace_seq_printf(p, "DMAMAP ");
130		if (qc_flags & ATA_QCFLAG_IO)
131			trace_seq_printf(p, "IO ");
132		if (qc_flags & ATA_QCFLAG_RESULT_TF)
133			trace_seq_printf(p, "RESULT_TF ");
134		if (qc_flags & ATA_QCFLAG_CLEAR_EXCL)
135			trace_seq_printf(p, "CLEAR_EXCL ");
136		if (qc_flags & ATA_QCFLAG_QUIET)
137			trace_seq_printf(p, "QUIET ");
138		if (qc_flags & ATA_QCFLAG_RETRY)
139			trace_seq_printf(p, "RETRY ");
140		if (qc_flags & ATA_QCFLAG_FAILED)
141			trace_seq_printf(p, "FAILED ");
142		if (qc_flags & ATA_QCFLAG_SENSE_VALID)
143			trace_seq_printf(p, "SENSE_VALID ");
144		if (qc_flags & ATA_QCFLAG_EH_SCHEDULED)
145			trace_seq_printf(p, "EH_SCHEDULED ");
146		trace_seq_putc(p, '}');
147	}
148	trace_seq_putc(p, 0);
149
150	return ret;
151}
152