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1/*
2 * Copyright (c) 2013 - 2017 Intel Corporation. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32#include <linux/debugfs.h>
33#include <linux/seq_file.h>
34#include <linux/kernel.h>
35#include <linux/export.h>
36
37#include "qib.h"
38#include "qib_verbs.h"
39#include "qib_debugfs.h"
40
41static struct dentry *qib_dbg_root;
42
43#define DEBUGFS_FILE(name) \
44static const struct seq_operations _##name##_seq_ops = { \
45 .start = _##name##_seq_start, \
46 .next = _##name##_seq_next, \
47 .stop = _##name##_seq_stop, \
48 .show = _##name##_seq_show \
49}; \
50static int _##name##_open(struct inode *inode, struct file *s) \
51{ \
52 struct seq_file *seq; \
53 int ret; \
54 ret = seq_open(s, &_##name##_seq_ops); \
55 if (ret) \
56 return ret; \
57 seq = s->private_data; \
58 seq->private = inode->i_private; \
59 return 0; \
60} \
61static const struct file_operations _##name##_file_ops = { \
62 .owner = THIS_MODULE, \
63 .open = _##name##_open, \
64 .read = seq_read, \
65 .llseek = seq_lseek, \
66 .release = seq_release \
67};
68
69static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos)
70{
71 struct qib_opcode_stats_perctx *opstats;
72
73 if (*pos >= ARRAY_SIZE(opstats->stats))
74 return NULL;
75 return pos;
76}
77
78static void *_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
79{
80 struct qib_opcode_stats_perctx *opstats;
81
82 ++*pos;
83 if (*pos >= ARRAY_SIZE(opstats->stats))
84 return NULL;
85 return pos;
86}
87
88
89static void _opcode_stats_seq_stop(struct seq_file *s, void *v)
90{
91 /* nothing allocated */
92}
93
94static int _opcode_stats_seq_show(struct seq_file *s, void *v)
95{
96 loff_t *spos = v;
97 loff_t i = *spos, j;
98 u64 n_packets = 0, n_bytes = 0;
99 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
100 struct qib_devdata *dd = dd_from_dev(ibd);
101
102 for (j = 0; j < dd->first_user_ctxt; j++) {
103 if (!dd->rcd[j])
104 continue;
105 n_packets += dd->rcd[j]->opstats->stats[i].n_packets;
106 n_bytes += dd->rcd[j]->opstats->stats[i].n_bytes;
107 }
108 if (!n_packets && !n_bytes)
109 return SEQ_SKIP;
110 seq_printf(s, "%02llx %llu/%llu\n", i,
111 (unsigned long long) n_packets,
112 (unsigned long long) n_bytes);
113
114 return 0;
115}
116
117DEBUGFS_FILE(opcode_stats)
118
119static void *_ctx_stats_seq_start(struct seq_file *s, loff_t *pos)
120{
121 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
122 struct qib_devdata *dd = dd_from_dev(ibd);
123
124 if (!*pos)
125 return SEQ_START_TOKEN;
126 if (*pos >= dd->first_user_ctxt)
127 return NULL;
128 return pos;
129}
130
131static void *_ctx_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
132{
133 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
134 struct qib_devdata *dd = dd_from_dev(ibd);
135
136 if (v == SEQ_START_TOKEN)
137 return pos;
138
139 ++*pos;
140 if (*pos >= dd->first_user_ctxt)
141 return NULL;
142 return pos;
143}
144
145static void _ctx_stats_seq_stop(struct seq_file *s, void *v)
146{
147 /* nothing allocated */
148}
149
150static int _ctx_stats_seq_show(struct seq_file *s, void *v)
151{
152 loff_t *spos;
153 loff_t i, j;
154 u64 n_packets = 0;
155 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
156 struct qib_devdata *dd = dd_from_dev(ibd);
157
158 if (v == SEQ_START_TOKEN) {
159 seq_puts(s, "Ctx:npkts\n");
160 return 0;
161 }
162
163 spos = v;
164 i = *spos;
165
166 if (!dd->rcd[i])
167 return SEQ_SKIP;
168
169 for (j = 0; j < ARRAY_SIZE(dd->rcd[i]->opstats->stats); j++)
170 n_packets += dd->rcd[i]->opstats->stats[j].n_packets;
171
172 if (!n_packets)
173 return SEQ_SKIP;
174
175 seq_printf(s, " %llu:%llu\n", i, n_packets);
176 return 0;
177}
178
179DEBUGFS_FILE(ctx_stats)
180
181static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos)
182 __acquires(RCU)
183{
184 struct rvt_qp_iter *iter;
185 loff_t n = *pos;
186
187 iter = rvt_qp_iter_init(s->private, 0, NULL);
188
189 /* stop calls rcu_read_unlock */
190 rcu_read_lock();
191
192 if (!iter)
193 return NULL;
194
195 do {
196 if (rvt_qp_iter_next(iter)) {
197 kfree(iter);
198 return NULL;
199 }
200 } while (n--);
201
202 return iter;
203}
204
205static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr,
206 loff_t *pos)
207 __must_hold(RCU)
208{
209 struct rvt_qp_iter *iter = iter_ptr;
210
211 (*pos)++;
212
213 if (rvt_qp_iter_next(iter)) {
214 kfree(iter);
215 return NULL;
216 }
217
218 return iter;
219}
220
221static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr)
222 __releases(RCU)
223{
224 rcu_read_unlock();
225}
226
227static int _qp_stats_seq_show(struct seq_file *s, void *iter_ptr)
228{
229 struct rvt_qp_iter *iter = iter_ptr;
230
231 if (!iter)
232 return 0;
233
234 qib_qp_iter_print(s, iter);
235
236 return 0;
237}
238
239DEBUGFS_FILE(qp_stats)
240
241void qib_dbg_ibdev_init(struct qib_ibdev *ibd)
242{
243 struct dentry *root;
244 char name[10];
245
246 snprintf(name, sizeof(name), "qib%d", dd_from_dev(ibd)->unit);
247 root = debugfs_create_dir(name, qib_dbg_root);
248 ibd->qib_ibdev_dbg = root;
249
250 debugfs_create_file("opcode_stats", 0400, root, ibd,
251 &_opcode_stats_file_ops);
252 debugfs_create_file("ctx_stats", 0400, root, ibd, &_ctx_stats_file_ops);
253 debugfs_create_file("qp_stats", 0400, root, ibd, &_qp_stats_file_ops);
254}
255
256void qib_dbg_ibdev_exit(struct qib_ibdev *ibd)
257{
258 if (!qib_dbg_root)
259 goto out;
260 debugfs_remove_recursive(ibd->qib_ibdev_dbg);
261out:
262 ibd->qib_ibdev_dbg = NULL;
263}
264
265void qib_dbg_init(void)
266{
267 qib_dbg_root = debugfs_create_dir(QIB_DRV_NAME, NULL);
268}
269
270void qib_dbg_exit(void)
271{
272 debugfs_remove_recursive(qib_dbg_root);
273 qib_dbg_root = NULL;
274}
1#ifdef CONFIG_DEBUG_FS
2/*
3 * Copyright (c) 2013 Intel Corporation. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33#include <linux/debugfs.h>
34#include <linux/seq_file.h>
35#include <linux/kernel.h>
36#include <linux/export.h>
37
38#include "qib.h"
39#include "qib_verbs.h"
40#include "qib_debugfs.h"
41
42static struct dentry *qib_dbg_root;
43
44#define DEBUGFS_FILE(name) \
45static const struct seq_operations _##name##_seq_ops = { \
46 .start = _##name##_seq_start, \
47 .next = _##name##_seq_next, \
48 .stop = _##name##_seq_stop, \
49 .show = _##name##_seq_show \
50}; \
51static int _##name##_open(struct inode *inode, struct file *s) \
52{ \
53 struct seq_file *seq; \
54 int ret; \
55 ret = seq_open(s, &_##name##_seq_ops); \
56 if (ret) \
57 return ret; \
58 seq = s->private_data; \
59 seq->private = inode->i_private; \
60 return 0; \
61} \
62static const struct file_operations _##name##_file_ops = { \
63 .owner = THIS_MODULE, \
64 .open = _##name##_open, \
65 .read = seq_read, \
66 .llseek = seq_lseek, \
67 .release = seq_release \
68};
69
70#define DEBUGFS_FILE_CREATE(name) \
71do { \
72 struct dentry *ent; \
73 ent = debugfs_create_file(#name , 0400, ibd->qib_ibdev_dbg, \
74 ibd, &_##name##_file_ops); \
75 if (!ent) \
76 pr_warn("create of " #name " failed\n"); \
77} while (0)
78
79static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos)
80{
81 struct qib_opcode_stats_perctx *opstats;
82
83 if (*pos >= ARRAY_SIZE(opstats->stats))
84 return NULL;
85 return pos;
86}
87
88static void *_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
89{
90 struct qib_opcode_stats_perctx *opstats;
91
92 ++*pos;
93 if (*pos >= ARRAY_SIZE(opstats->stats))
94 return NULL;
95 return pos;
96}
97
98
99static void _opcode_stats_seq_stop(struct seq_file *s, void *v)
100{
101 /* nothing allocated */
102}
103
104static int _opcode_stats_seq_show(struct seq_file *s, void *v)
105{
106 loff_t *spos = v;
107 loff_t i = *spos, j;
108 u64 n_packets = 0, n_bytes = 0;
109 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
110 struct qib_devdata *dd = dd_from_dev(ibd);
111
112 for (j = 0; j < dd->first_user_ctxt; j++) {
113 if (!dd->rcd[j])
114 continue;
115 n_packets += dd->rcd[j]->opstats->stats[i].n_packets;
116 n_bytes += dd->rcd[j]->opstats->stats[i].n_bytes;
117 }
118 if (!n_packets && !n_bytes)
119 return SEQ_SKIP;
120 seq_printf(s, "%02llx %llu/%llu\n", i,
121 (unsigned long long) n_packets,
122 (unsigned long long) n_bytes);
123
124 return 0;
125}
126
127DEBUGFS_FILE(opcode_stats)
128
129static void *_ctx_stats_seq_start(struct seq_file *s, loff_t *pos)
130{
131 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
132 struct qib_devdata *dd = dd_from_dev(ibd);
133
134 if (!*pos)
135 return SEQ_START_TOKEN;
136 if (*pos >= dd->first_user_ctxt)
137 return NULL;
138 return pos;
139}
140
141static void *_ctx_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
142{
143 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
144 struct qib_devdata *dd = dd_from_dev(ibd);
145
146 if (v == SEQ_START_TOKEN)
147 return pos;
148
149 ++*pos;
150 if (*pos >= dd->first_user_ctxt)
151 return NULL;
152 return pos;
153}
154
155static void _ctx_stats_seq_stop(struct seq_file *s, void *v)
156{
157 /* nothing allocated */
158}
159
160static int _ctx_stats_seq_show(struct seq_file *s, void *v)
161{
162 loff_t *spos;
163 loff_t i, j;
164 u64 n_packets = 0;
165 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
166 struct qib_devdata *dd = dd_from_dev(ibd);
167
168 if (v == SEQ_START_TOKEN) {
169 seq_puts(s, "Ctx:npkts\n");
170 return 0;
171 }
172
173 spos = v;
174 i = *spos;
175
176 if (!dd->rcd[i])
177 return SEQ_SKIP;
178
179 for (j = 0; j < ARRAY_SIZE(dd->rcd[i]->opstats->stats); j++)
180 n_packets += dd->rcd[i]->opstats->stats[j].n_packets;
181
182 if (!n_packets)
183 return SEQ_SKIP;
184
185 seq_printf(s, " %llu:%llu\n", i, n_packets);
186 return 0;
187}
188
189DEBUGFS_FILE(ctx_stats)
190
191static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos)
192{
193 struct qib_qp_iter *iter;
194 loff_t n = *pos;
195
196 iter = qib_qp_iter_init(s->private);
197 if (!iter)
198 return NULL;
199
200 while (n--) {
201 if (qib_qp_iter_next(iter)) {
202 kfree(iter);
203 return NULL;
204 }
205 }
206
207 return iter;
208}
209
210static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr,
211 loff_t *pos)
212{
213 struct qib_qp_iter *iter = iter_ptr;
214
215 (*pos)++;
216
217 if (qib_qp_iter_next(iter)) {
218 kfree(iter);
219 return NULL;
220 }
221
222 return iter;
223}
224
225static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr)
226{
227 /* nothing for now */
228}
229
230static int _qp_stats_seq_show(struct seq_file *s, void *iter_ptr)
231{
232 struct qib_qp_iter *iter = iter_ptr;
233
234 if (!iter)
235 return 0;
236
237 qib_qp_iter_print(s, iter);
238
239 return 0;
240}
241
242DEBUGFS_FILE(qp_stats)
243
244void qib_dbg_ibdev_init(struct qib_ibdev *ibd)
245{
246 char name[10];
247
248 snprintf(name, sizeof(name), "qib%d", dd_from_dev(ibd)->unit);
249 ibd->qib_ibdev_dbg = debugfs_create_dir(name, qib_dbg_root);
250 if (!ibd->qib_ibdev_dbg) {
251 pr_warn("create of %s failed\n", name);
252 return;
253 }
254 DEBUGFS_FILE_CREATE(opcode_stats);
255 DEBUGFS_FILE_CREATE(ctx_stats);
256 DEBUGFS_FILE_CREATE(qp_stats);
257 return;
258}
259
260void qib_dbg_ibdev_exit(struct qib_ibdev *ibd)
261{
262 if (!qib_dbg_root)
263 goto out;
264 debugfs_remove_recursive(ibd->qib_ibdev_dbg);
265out:
266 ibd->qib_ibdev_dbg = NULL;
267}
268
269void qib_dbg_init(void)
270{
271 qib_dbg_root = debugfs_create_dir(QIB_DRV_NAME, NULL);
272 if (!qib_dbg_root)
273 pr_warn("init of debugfs failed\n");
274}
275
276void qib_dbg_exit(void)
277{
278 debugfs_remove_recursive(qib_dbg_root);
279 qib_dbg_root = NULL;
280}
281
282#endif
283