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9#ifdef CONFIG_DEBUG_FS
10
11#include <linux/uaccess.h>
12#include <linux/debugfs.h>
13#include <linux/module.h>
14
15#include "qedf.h"
16#include "qedf_dbg.h"
17
18static struct dentry *qedf_dbg_root;
19
20
21
22
23
24void
25qedf_dbg_host_init(struct qedf_dbg_ctx *qedf,
26 struct qedf_debugfs_ops *dops,
27 struct file_operations *fops)
28{
29 char host_dirname[32];
30 struct dentry *file_dentry = NULL;
31
32 QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "Creating debugfs host node\n");
33
34 sprintf(host_dirname, "host%u", qedf->host_no);
35 qedf->bdf_dentry = debugfs_create_dir(host_dirname, qedf_dbg_root);
36 if (!qedf->bdf_dentry)
37 return;
38
39
40 while (dops) {
41 if (!(dops->name))
42 break;
43
44 file_dentry = debugfs_create_file(dops->name, 0600,
45 qedf->bdf_dentry, qedf,
46 fops);
47 if (!file_dentry) {
48 QEDF_INFO(qedf, QEDF_LOG_DEBUGFS,
49 "Debugfs entry %s creation failed\n",
50 dops->name);
51 debugfs_remove_recursive(qedf->bdf_dentry);
52 return;
53 }
54 dops++;
55 fops++;
56 }
57}
58
59
60
61
62
63void
64qedf_dbg_host_exit(struct qedf_dbg_ctx *qedf)
65{
66 QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "Destroying debugfs host "
67 "entry\n");
68
69 debugfs_remove_recursive(qedf->bdf_dentry);
70 qedf->bdf_dentry = NULL;
71}
72
73
74
75
76void
77qedf_dbg_init(char *drv_name)
78{
79 QEDF_INFO(NULL, QEDF_LOG_DEBUGFS, "Creating debugfs root node\n");
80
81
82 qedf_dbg_root = debugfs_create_dir(drv_name, NULL);
83 if (!qedf_dbg_root)
84 QEDF_INFO(NULL, QEDF_LOG_DEBUGFS, "Init of debugfs "
85 "failed\n");
86}
87
88
89
90
91void
92qedf_dbg_exit(void)
93{
94 QEDF_INFO(NULL, QEDF_LOG_DEBUGFS, "Destroying debugfs root "
95 "entry\n");
96
97
98 debugfs_remove_recursive(qedf_dbg_root);
99 qedf_dbg_root = NULL;
100}
101
102struct qedf_debugfs_ops qedf_debugfs_ops[] = {
103 { "fp_int", NULL },
104 { "io_trace", NULL },
105 { "debug", NULL },
106 { "stop_io_on_error", NULL},
107 { "driver_stats", NULL},
108 { "clear_stats", NULL},
109 { "offload_stats", NULL},
110
111 { NULL, NULL }
112};
113
114DECLARE_PER_CPU(struct qedf_percpu_iothread_s, qedf_percpu_iothreads);
115
116static ssize_t
117qedf_dbg_fp_int_cmd_read(struct file *filp, char __user *buffer, size_t count,
118 loff_t *ppos)
119{
120 size_t cnt = 0;
121 int id;
122 struct qedf_fastpath *fp = NULL;
123 struct qedf_dbg_ctx *qedf_dbg =
124 (struct qedf_dbg_ctx *)filp->private_data;
125 struct qedf_ctx *qedf = container_of(qedf_dbg,
126 struct qedf_ctx, dbg_ctx);
127
128 QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "entered\n");
129
130 cnt = sprintf(buffer, "\nFastpath I/O completions\n\n");
131
132 for (id = 0; id < qedf->num_queues; id++) {
133 fp = &(qedf->fp_array[id]);
134 if (fp->sb_id == QEDF_SB_ID_NULL)
135 continue;
136 cnt += sprintf((buffer + cnt), "#%d: %lu\n", id,
137 fp->completions);
138 }
139
140 cnt = min_t(int, count, cnt - *ppos);
141 *ppos += cnt;
142 return cnt;
143}
144
145static ssize_t
146qedf_dbg_fp_int_cmd_write(struct file *filp, const char __user *buffer,
147 size_t count, loff_t *ppos)
148{
149 if (!count || *ppos)
150 return 0;
151
152 return count;
153}
154
155static ssize_t
156qedf_dbg_debug_cmd_read(struct file *filp, char __user *buffer, size_t count,
157 loff_t *ppos)
158{
159 int cnt;
160 struct qedf_dbg_ctx *qedf =
161 (struct qedf_dbg_ctx *)filp->private_data;
162
163 QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "entered\n");
164 cnt = sprintf(buffer, "debug mask = 0x%x\n", qedf_debug);
165
166 cnt = min_t(int, count, cnt - *ppos);
167 *ppos += cnt;
168 return cnt;
169}
170
171static ssize_t
172qedf_dbg_debug_cmd_write(struct file *filp, const char __user *buffer,
173 size_t count, loff_t *ppos)
174{
175 uint32_t val;
176 void *kern_buf;
177 int rval;
178 struct qedf_dbg_ctx *qedf =
179 (struct qedf_dbg_ctx *)filp->private_data;
180
181 if (!count || *ppos)
182 return 0;
183
184 kern_buf = memdup_user(buffer, count);
185 if (IS_ERR(kern_buf))
186 return PTR_ERR(kern_buf);
187
188 rval = kstrtouint(kern_buf, 10, &val);
189 kfree(kern_buf);
190 if (rval)
191 return rval;
192
193 if (val == 1)
194 qedf_debug = QEDF_DEFAULT_LOG_MASK;
195 else
196 qedf_debug = val;
197
198 QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "Setting debug=0x%x.\n", val);
199 return count;
200}
201
202static ssize_t
203qedf_dbg_stop_io_on_error_cmd_read(struct file *filp, char __user *buffer,
204 size_t count, loff_t *ppos)
205{
206 int cnt;
207 struct qedf_dbg_ctx *qedf_dbg =
208 (struct qedf_dbg_ctx *)filp->private_data;
209 struct qedf_ctx *qedf = container_of(qedf_dbg,
210 struct qedf_ctx, dbg_ctx);
211
212 QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "entered\n");
213 cnt = sprintf(buffer, "%s\n",
214 qedf->stop_io_on_error ? "true" : "false");
215
216 cnt = min_t(int, count, cnt - *ppos);
217 *ppos += cnt;
218 return cnt;
219}
220
221static ssize_t
222qedf_dbg_stop_io_on_error_cmd_write(struct file *filp,
223 const char __user *buffer, size_t count,
224 loff_t *ppos)
225{
226 void *kern_buf;
227 struct qedf_dbg_ctx *qedf_dbg =
228 (struct qedf_dbg_ctx *)filp->private_data;
229 struct qedf_ctx *qedf = container_of(qedf_dbg, struct qedf_ctx,
230 dbg_ctx);
231
232 QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "entered\n");
233
234 if (!count || *ppos)
235 return 0;
236
237 kern_buf = memdup_user(buffer, 6);
238 if (IS_ERR(kern_buf))
239 return PTR_ERR(kern_buf);
240
241 if (strncmp(kern_buf, "false", 5) == 0)
242 qedf->stop_io_on_error = false;
243 else if (strncmp(kern_buf, "true", 4) == 0)
244 qedf->stop_io_on_error = true;
245 else if (strncmp(kern_buf, "now", 3) == 0)
246
247 set_bit(QEDF_DBG_STOP_IO, &qedf->flags);
248
249 kfree(kern_buf);
250 return count;
251}
252
253static int
254qedf_io_trace_show(struct seq_file *s, void *unused)
255{
256 int i, idx = 0;
257 struct qedf_ctx *qedf = s->private;
258 struct qedf_dbg_ctx *qedf_dbg = &qedf->dbg_ctx;
259 struct qedf_io_log *io_log;
260 unsigned long flags;
261
262 if (!qedf_io_tracing) {
263 seq_puts(s, "I/O tracing not enabled.\n");
264 goto out;
265 }
266
267 QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "entered\n");
268
269 spin_lock_irqsave(&qedf->io_trace_lock, flags);
270 idx = qedf->io_trace_idx;
271 for (i = 0; i < QEDF_IO_TRACE_SIZE; i++) {
272 io_log = &qedf->io_trace_buf[idx];
273 seq_printf(s, "%d:", io_log->direction);
274 seq_printf(s, "0x%x:", io_log->task_id);
275 seq_printf(s, "0x%06x:", io_log->port_id);
276 seq_printf(s, "%d:", io_log->lun);
277 seq_printf(s, "0x%02x:", io_log->op);
278 seq_printf(s, "0x%02x%02x%02x%02x:", io_log->lba[0],
279 io_log->lba[1], io_log->lba[2], io_log->lba[3]);
280 seq_printf(s, "%d:", io_log->bufflen);
281 seq_printf(s, "%d:", io_log->sg_count);
282 seq_printf(s, "0x%08x:", io_log->result);
283 seq_printf(s, "%lu:", io_log->jiffies);
284 seq_printf(s, "%d:", io_log->refcount);
285 seq_printf(s, "%d:", io_log->req_cpu);
286 seq_printf(s, "%d:", io_log->int_cpu);
287 seq_printf(s, "%d:", io_log->rsp_cpu);
288 seq_printf(s, "%d\n", io_log->sge_type);
289
290 idx++;
291 if (idx == QEDF_IO_TRACE_SIZE)
292 idx = 0;
293 }
294 spin_unlock_irqrestore(&qedf->io_trace_lock, flags);
295
296out:
297 return 0;
298}
299
300static int
301qedf_dbg_io_trace_open(struct inode *inode, struct file *file)
302{
303 struct qedf_dbg_ctx *qedf_dbg = inode->i_private;
304 struct qedf_ctx *qedf = container_of(qedf_dbg,
305 struct qedf_ctx, dbg_ctx);
306
307 return single_open(file, qedf_io_trace_show, qedf);
308}
309
310static int
311qedf_driver_stats_show(struct seq_file *s, void *unused)
312{
313 struct qedf_ctx *qedf = s->private;
314 struct qedf_rport *fcport;
315 struct fc_rport_priv *rdata;
316
317 seq_printf(s, "cmg_mgr free io_reqs: %d\n",
318 atomic_read(&qedf->cmd_mgr->free_list_cnt));
319 seq_printf(s, "slow SGEs: %d\n", qedf->slow_sge_ios);
320 seq_printf(s, "single SGEs: %d\n", qedf->single_sge_ios);
321 seq_printf(s, "fast SGEs: %d\n\n", qedf->fast_sge_ios);
322
323 seq_puts(s, "Offloaded ports:\n\n");
324
325 rcu_read_lock();
326 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
327 rdata = fcport->rdata;
328 if (rdata == NULL)
329 continue;
330 seq_printf(s, "%06x: free_sqes: %d, num_active_ios: %d\n",
331 rdata->ids.port_id, atomic_read(&fcport->free_sqes),
332 atomic_read(&fcport->num_active_ios));
333 }
334 rcu_read_unlock();
335
336 return 0;
337}
338
339static int
340qedf_dbg_driver_stats_open(struct inode *inode, struct file *file)
341{
342 struct qedf_dbg_ctx *qedf_dbg = inode->i_private;
343 struct qedf_ctx *qedf = container_of(qedf_dbg,
344 struct qedf_ctx, dbg_ctx);
345
346 return single_open(file, qedf_driver_stats_show, qedf);
347}
348
349static ssize_t
350qedf_dbg_clear_stats_cmd_read(struct file *filp, char __user *buffer,
351 size_t count, loff_t *ppos)
352{
353 int cnt = 0;
354
355
356 cnt = min_t(int, count, cnt - *ppos);
357 *ppos += cnt;
358 return cnt;
359}
360
361static ssize_t
362qedf_dbg_clear_stats_cmd_write(struct file *filp,
363 const char __user *buffer, size_t count,
364 loff_t *ppos)
365{
366 struct qedf_dbg_ctx *qedf_dbg =
367 (struct qedf_dbg_ctx *)filp->private_data;
368 struct qedf_ctx *qedf = container_of(qedf_dbg, struct qedf_ctx,
369 dbg_ctx);
370
371 QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "Clearing stat counters.\n");
372
373 if (!count || *ppos)
374 return 0;
375
376
377 qedf->slow_sge_ios = 0;
378 qedf->single_sge_ios = 0;
379 qedf->fast_sge_ios = 0;
380
381 return count;
382}
383
384static int
385qedf_offload_stats_show(struct seq_file *s, void *unused)
386{
387 struct qedf_ctx *qedf = s->private;
388 struct qed_fcoe_stats *fw_fcoe_stats;
389
390 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
391 if (!fw_fcoe_stats) {
392 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
393 "fw_fcoe_stats.\n");
394 goto out;
395 }
396
397
398 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
399
400 seq_printf(s, "fcoe_rx_byte_cnt=%llu\n"
401 "fcoe_rx_data_pkt_cnt=%llu\n"
402 "fcoe_rx_xfer_pkt_cnt=%llu\n"
403 "fcoe_rx_other_pkt_cnt=%llu\n"
404 "fcoe_silent_drop_pkt_cmdq_full_cnt=%u\n"
405 "fcoe_silent_drop_pkt_crc_error_cnt=%u\n"
406 "fcoe_silent_drop_pkt_task_invalid_cnt=%u\n"
407 "fcoe_silent_drop_total_pkt_cnt=%u\n"
408 "fcoe_silent_drop_pkt_rq_full_cnt=%u\n"
409 "fcoe_tx_byte_cnt=%llu\n"
410 "fcoe_tx_data_pkt_cnt=%llu\n"
411 "fcoe_tx_xfer_pkt_cnt=%llu\n"
412 "fcoe_tx_other_pkt_cnt=%llu\n",
413 fw_fcoe_stats->fcoe_rx_byte_cnt,
414 fw_fcoe_stats->fcoe_rx_data_pkt_cnt,
415 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt,
416 fw_fcoe_stats->fcoe_rx_other_pkt_cnt,
417 fw_fcoe_stats->fcoe_silent_drop_pkt_cmdq_full_cnt,
418 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt,
419 fw_fcoe_stats->fcoe_silent_drop_pkt_task_invalid_cnt,
420 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt,
421 fw_fcoe_stats->fcoe_silent_drop_pkt_rq_full_cnt,
422 fw_fcoe_stats->fcoe_tx_byte_cnt,
423 fw_fcoe_stats->fcoe_tx_data_pkt_cnt,
424 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt,
425 fw_fcoe_stats->fcoe_tx_other_pkt_cnt);
426
427 kfree(fw_fcoe_stats);
428out:
429 return 0;
430}
431
432static int
433qedf_dbg_offload_stats_open(struct inode *inode, struct file *file)
434{
435 struct qedf_dbg_ctx *qedf_dbg = inode->i_private;
436 struct qedf_ctx *qedf = container_of(qedf_dbg,
437 struct qedf_ctx, dbg_ctx);
438
439 return single_open(file, qedf_offload_stats_show, qedf);
440}
441
442
443const struct file_operations qedf_dbg_fops[] = {
444 qedf_dbg_fileops(qedf, fp_int),
445 qedf_dbg_fileops_seq(qedf, io_trace),
446 qedf_dbg_fileops(qedf, debug),
447 qedf_dbg_fileops(qedf, stop_io_on_error),
448 qedf_dbg_fileops_seq(qedf, driver_stats),
449 qedf_dbg_fileops(qedf, clear_stats),
450 qedf_dbg_fileops_seq(qedf, offload_stats),
451
452 { NULL, NULL },
453};
454
455#else
456void qedf_dbg_host_init(struct qedf_dbg_ctx *);
457void qedf_dbg_host_exit(struct qedf_dbg_ctx *);
458void qedf_dbg_init(char *);
459void qedf_dbg_exit(void);
460#endif
461
