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}