1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * libata-trace.c - trace functions for libata
4  *
5  * Copyright 2015 Hannes Reinecke
6  * Copyright 2015 SUSE Linux GmbH
7  */
8 
9 #include <linux/kernel.h>
10 #include <linux/trace_seq.h>
11 #include <trace/events/libata.h>
12 
13 const char *
libata_trace_parse_status(struct trace_seq * p,unsigned char status)14 libata_trace_parse_status(struct trace_seq *p, unsigned char status)
15 {
16 	const char *ret = trace_seq_buffer_ptr(p);
17 
18 	trace_seq_printf(p, "{ ");
19 	if (status & ATA_BUSY)
20 		trace_seq_printf(p, "BUSY ");
21 	if (status & ATA_DRDY)
22 		trace_seq_printf(p, "DRDY ");
23 	if (status & ATA_DF)
24 		trace_seq_printf(p, "DF ");
25 	if (status & ATA_DSC)
26 		trace_seq_printf(p, "DSC ");
27 	if (status & ATA_DRQ)
28 		trace_seq_printf(p, "DRQ ");
29 	if (status & ATA_CORR)
30 		trace_seq_printf(p, "CORR ");
31 	if (status & ATA_SENSE)
32 		trace_seq_printf(p, "SENSE ");
33 	if (status & ATA_ERR)
34 		trace_seq_printf(p, "ERR ");
35 	trace_seq_putc(p, '}');
36 	trace_seq_putc(p, 0);
37 
38 	return ret;
39 }
40 
41 const char *
libata_trace_parse_eh_action(struct trace_seq * p,unsigned int eh_action)42 libata_trace_parse_eh_action(struct trace_seq *p, unsigned int eh_action)
43 {
44 	const char *ret = trace_seq_buffer_ptr(p);
45 
46 	trace_seq_printf(p, "%x", eh_action);
47 	if (eh_action) {
48 		trace_seq_printf(p, "{ ");
49 		if (eh_action & ATA_EH_REVALIDATE)
50 			trace_seq_printf(p, "REVALIDATE ");
51 		if (eh_action & (ATA_EH_SOFTRESET | ATA_EH_HARDRESET))
52 			trace_seq_printf(p, "RESET ");
53 		else if (eh_action & ATA_EH_SOFTRESET)
54 			trace_seq_printf(p, "SOFTRESET ");
55 		else if (eh_action & ATA_EH_HARDRESET)
56 			trace_seq_printf(p, "HARDRESET ");
57 		if (eh_action & ATA_EH_ENABLE_LINK)
58 			trace_seq_printf(p, "ENABLE_LINK ");
59 		if (eh_action & ATA_EH_PARK)
60 			trace_seq_printf(p, "PARK ");
61 		trace_seq_putc(p, '}');
62 	}
63 	trace_seq_putc(p, 0);
64 
65 	return ret;
66 }
67 
68 const char *
libata_trace_parse_eh_err_mask(struct trace_seq * p,unsigned int eh_err_mask)69 libata_trace_parse_eh_err_mask(struct trace_seq *p, unsigned int eh_err_mask)
70 {
71 	const char *ret = trace_seq_buffer_ptr(p);
72 
73 	trace_seq_printf(p, "%x", eh_err_mask);
74 	if (eh_err_mask) {
75 		trace_seq_printf(p, "{ ");
76 		if (eh_err_mask & AC_ERR_DEV)
77 			trace_seq_printf(p, "DEV ");
78 		if (eh_err_mask & AC_ERR_HSM)
79 			trace_seq_printf(p, "HSM ");
80 		if (eh_err_mask & AC_ERR_TIMEOUT)
81 			trace_seq_printf(p, "TIMEOUT ");
82 		if (eh_err_mask & AC_ERR_MEDIA)
83 			trace_seq_printf(p, "MEDIA ");
84 		if (eh_err_mask & AC_ERR_ATA_BUS)
85 			trace_seq_printf(p, "ATA_BUS ");
86 		if (eh_err_mask & AC_ERR_HOST_BUS)
87 			trace_seq_printf(p, "HOST_BUS ");
88 		if (eh_err_mask & AC_ERR_SYSTEM)
89 			trace_seq_printf(p, "SYSTEM ");
90 		if (eh_err_mask & AC_ERR_INVALID)
91 			trace_seq_printf(p, "INVALID ");
92 		if (eh_err_mask & AC_ERR_OTHER)
93 			trace_seq_printf(p, "OTHER ");
94 		if (eh_err_mask & AC_ERR_NODEV_HINT)
95 			trace_seq_printf(p, "NODEV_HINT ");
96 		if (eh_err_mask & AC_ERR_NCQ)
97 			trace_seq_printf(p, "NCQ ");
98 		trace_seq_putc(p, '}');
99 	}
100 	trace_seq_putc(p, 0);
101 
102 	return ret;
103 }
104 
105 const char *
libata_trace_parse_qc_flags(struct trace_seq * p,unsigned int qc_flags)106 libata_trace_parse_qc_flags(struct trace_seq *p, unsigned int qc_flags)
107 {
108 	const char *ret = trace_seq_buffer_ptr(p);
109 
110 	trace_seq_printf(p, "%x", qc_flags);
111 	if (qc_flags) {
112 		trace_seq_printf(p, "{ ");
113 		if (qc_flags & ATA_QCFLAG_ACTIVE)
114 			trace_seq_printf(p, "ACTIVE ");
115 		if (qc_flags & ATA_QCFLAG_DMAMAP)
116 			trace_seq_printf(p, "DMAMAP ");
117 		if (qc_flags & ATA_QCFLAG_IO)
118 			trace_seq_printf(p, "IO ");
119 		if (qc_flags & ATA_QCFLAG_RESULT_TF)
120 			trace_seq_printf(p, "RESULT_TF ");
121 		if (qc_flags & ATA_QCFLAG_CLEAR_EXCL)
122 			trace_seq_printf(p, "CLEAR_EXCL ");
123 		if (qc_flags & ATA_QCFLAG_QUIET)
124 			trace_seq_printf(p, "QUIET ");
125 		if (qc_flags & ATA_QCFLAG_RETRY)
126 			trace_seq_printf(p, "RETRY ");
127 		if (qc_flags & ATA_QCFLAG_FAILED)
128 			trace_seq_printf(p, "FAILED ");
129 		if (qc_flags & ATA_QCFLAG_SENSE_VALID)
130 			trace_seq_printf(p, "SENSE_VALID ");
131 		if (qc_flags & ATA_QCFLAG_EH_SCHEDULED)
132 			trace_seq_printf(p, "EH_SCHEDULED ");
133 		trace_seq_putc(p, '}');
134 	}
135 	trace_seq_putc(p, 0);
136 
137 	return ret;
138 }
139 
140 const char *
libata_trace_parse_subcmd(struct trace_seq * p,unsigned char cmd,unsigned char feature,unsigned char hob_nsect)141 libata_trace_parse_subcmd(struct trace_seq *p, unsigned char cmd,
142 			  unsigned char feature, unsigned char hob_nsect)
143 {
144 	const char *ret = trace_seq_buffer_ptr(p);
145 
146 	switch (cmd) {
147 	case ATA_CMD_FPDMA_RECV:
148 		switch (hob_nsect & 0x5f) {
149 		case ATA_SUBCMD_FPDMA_RECV_RD_LOG_DMA_EXT:
150 			trace_seq_printf(p, " READ_LOG_DMA_EXT");
151 			break;
152 		case ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN:
153 			trace_seq_printf(p, " ZAC_MGMT_IN");
154 			break;
155 		}
156 		break;
157 	case ATA_CMD_FPDMA_SEND:
158 		switch (hob_nsect & 0x5f) {
159 		case ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT:
160 			trace_seq_printf(p, " WRITE_LOG_DMA_EXT");
161 			break;
162 		case ATA_SUBCMD_FPDMA_SEND_DSM:
163 			trace_seq_printf(p, " DATASET_MANAGEMENT");
164 			break;
165 		}
166 		break;
167 	case ATA_CMD_NCQ_NON_DATA:
168 		switch (feature) {
169 		case ATA_SUBCMD_NCQ_NON_DATA_ABORT_QUEUE:
170 			trace_seq_printf(p, " ABORT_QUEUE");
171 			break;
172 		case ATA_SUBCMD_NCQ_NON_DATA_SET_FEATURES:
173 			trace_seq_printf(p, " SET_FEATURES");
174 			break;
175 		case ATA_SUBCMD_NCQ_NON_DATA_ZERO_EXT:
176 			trace_seq_printf(p, " ZERO_EXT");
177 			break;
178 		case ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT:
179 			trace_seq_printf(p, " ZAC_MGMT_OUT");
180 			break;
181 		}
182 		break;
183 	case ATA_CMD_ZAC_MGMT_IN:
184 		switch (feature) {
185 		case ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES:
186 			trace_seq_printf(p, " REPORT_ZONES");
187 			break;
188 		}
189 		break;
190 	case ATA_CMD_ZAC_MGMT_OUT:
191 		switch (feature) {
192 		case ATA_SUBCMD_ZAC_MGMT_OUT_CLOSE_ZONE:
193 			trace_seq_printf(p, " CLOSE_ZONE");
194 			break;
195 		case ATA_SUBCMD_ZAC_MGMT_OUT_FINISH_ZONE:
196 			trace_seq_printf(p, " FINISH_ZONE");
197 			break;
198 		case ATA_SUBCMD_ZAC_MGMT_OUT_OPEN_ZONE:
199 			trace_seq_printf(p, " OPEN_ZONE");
200 			break;
201 		case ATA_SUBCMD_ZAC_MGMT_OUT_RESET_WRITE_POINTER:
202 			trace_seq_printf(p, " RESET_WRITE_POINTER");
203 			break;
204 		}
205 		break;
206 	}
207 	trace_seq_putc(p, 0);
208 
209 	return ret;
210 }
211