summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/qla2xxx/qla_dfs.c
blob: 0a6fb359f4d5eb48f669309a4310a8cdb6bc5b15 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
/*
 * QLogic Fibre Channel HBA Driver
 * Copyright (c)  2003-2014 QLogic Corporation
 *
 * See LICENSE.qla2xxx for copyright and licensing details.
 */
#include "qla_def.h"

#include <linux/debugfs.h>
#include <linux/seq_file.h>

static struct dentry *qla2x00_dfs_root;
static atomic_t qla2x00_dfs_root_count;

static int
qla2x00_dfs_tgt_sess_show(struct seq_file *s, void *unused)
{
	scsi_qla_host_t *vha = s->private;
	struct qla_hw_data *ha = vha->hw;
	unsigned long flags;
	struct fc_port *sess = NULL;
	struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;

	seq_printf(s, "%s\n", vha->host_str);
	if (tgt) {
		seq_puts(s, "Port ID   Port Name                Handle\n");

		spin_lock_irqsave(&ha->tgt.sess_lock, flags);
		list_for_each_entry(sess, &vha->vp_fcports, list)
			seq_printf(s, "%02x:%02x:%02x  %8phC  %d\n",
			    sess->d_id.b.domain, sess->d_id.b.area,
			    sess->d_id.b.al_pa, sess->port_name,
			    sess->loop_id);
		spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
	}

	return 0;
}

static int
qla2x00_dfs_tgt_sess_open(struct inode *inode, struct file *file)
{
	scsi_qla_host_t *vha = inode->i_private;

	return single_open(file, qla2x00_dfs_tgt_sess_show, vha);
}

static const struct file_operations dfs_tgt_sess_ops = {
	.open		= qla2x00_dfs_tgt_sess_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

static int
qla2x00_dfs_tgt_port_database_show(struct seq_file *s, void *unused)
{
	scsi_qla_host_t *vha = s->private;
	struct qla_hw_data *ha = vha->hw;
	struct gid_list_info *gid_list, *gid;
	dma_addr_t gid_list_dma;
	fc_port_t fc_port;
	int rc, i;
	uint16_t entries, loop_id;
	struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;

	seq_printf(s, "%s\n", vha->host_str);
	if (tgt) {
		gid_list = dma_alloc_coherent(&ha->pdev->dev,
		    qla2x00_gid_list_size(ha),
		    &gid_list_dma, GFP_KERNEL);
		if (!gid_list) {
			ql_dbg(ql_dbg_user, vha, 0x7018,
			    "DMA allocation failed for %u\n",
			     qla2x00_gid_list_size(ha));
			return 0;
		}

		rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma,
		    &entries);
		if (rc != QLA_SUCCESS)
			goto out_free_id_list;

		gid = gid_list;

		seq_puts(s, "Port Name	Port ID 	Loop ID\n");

		for (i = 0; i < entries; i++) {
			loop_id = le16_to_cpu(gid->loop_id);
			memset(&fc_port, 0, sizeof(fc_port_t));

			fc_port.loop_id = loop_id;

			rc = qla24xx_gpdb_wait(vha, &fc_port, 0);
			seq_printf(s, "%8phC  %02x%02x%02x  %d\n",
				fc_port.port_name, fc_port.d_id.b.domain,
				fc_port.d_id.b.area, fc_port.d_id.b.al_pa,
				fc_port.loop_id);
			gid = (void *)gid + ha->gid_list_info_size;
		}
out_free_id_list:
		dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
		    gid_list, gid_list_dma);
	}

	return 0;
}

static int
qla2x00_dfs_tgt_port_database_open(struct inode *inode, struct file *file)
{
	scsi_qla_host_t *vha = inode->i_private;

	return single_open(file, qla2x00_dfs_tgt_port_database_show, vha);
}

static const struct file_operations dfs_tgt_port_database_ops = {
	.open		= qla2x00_dfs_tgt_port_database_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

static int
qla_dfs_fw_resource_cnt_show(struct seq_file *s, void *unused)
{
	struct scsi_qla_host *vha = s->private;
	uint16_t mb[MAX_IOCB_MB_REG];
	int rc;

	rc = qla24xx_res_count_wait(vha, mb, SIZEOF_IOCB_MB_REG);
	if (rc != QLA_SUCCESS) {
		seq_printf(s, "Mailbox Command failed %d, mb %#x", rc, mb[0]);
	} else {
		seq_puts(s, "FW Resource count\n\n");
		seq_printf(s, "Original TGT exchg count[%d]\n", mb[1]);
		seq_printf(s, "current TGT exchg count[%d]\n", mb[2]);
		seq_printf(s, "original Initiator Exchange count[%d]\n", mb[3]);
		seq_printf(s, "Current Initiator Exchange count[%d]\n", mb[6]);
		seq_printf(s, "Original IOCB count[%d]\n", mb[7]);
		seq_printf(s, "Current IOCB count[%d]\n", mb[10]);
		seq_printf(s, "MAX VP count[%d]\n", mb[11]);
		seq_printf(s, "MAX FCF count[%d]\n", mb[12]);
		seq_printf(s, "Current free pageable XCB buffer cnt[%d]\n",
		    mb[20]);
		seq_printf(s, "Original Initiator fast XCB buffer cnt[%d]\n",
		    mb[21]);
		seq_printf(s, "Current free Initiator fast XCB buffer cnt[%d]\n",
		    mb[22]);
		seq_printf(s, "Original Target fast XCB buffer cnt[%d]\n",
		    mb[23]);

	}

	return 0;
}

static int
qla_dfs_fw_resource_cnt_open(struct inode *inode, struct file *file)
{
	struct scsi_qla_host *vha = inode->i_private;

	return single_open(file, qla_dfs_fw_resource_cnt_show, vha);
}

static const struct file_operations dfs_fw_resource_cnt_ops = {
	.open           = qla_dfs_fw_resource_cnt_open,
	.read           = seq_read,
	.llseek         = seq_lseek,
	.release        = single_release,
};

static int
qla_dfs_tgt_counters_show(struct seq_file *s, void *unused)
{
	struct scsi_qla_host *vha = s->private;
	struct qla_qpair *qpair = vha->hw->base_qpair;
	uint64_t qla_core_sbt_cmd, core_qla_que_buf, qla_core_ret_ctio,
		core_qla_snd_status, qla_core_ret_sta_ctio, core_qla_free_cmd,
		num_q_full_sent, num_alloc_iocb_failed, num_term_xchg_sent;
	u16 i;

	qla_core_sbt_cmd = qpair->tgt_counters.qla_core_sbt_cmd;
	core_qla_que_buf = qpair->tgt_counters.core_qla_que_buf;
	qla_core_ret_ctio = qpair->tgt_counters.qla_core_ret_ctio;
	core_qla_snd_status = qpair->tgt_counters.core_qla_snd_status;
	qla_core_ret_sta_ctio = qpair->tgt_counters.qla_core_ret_sta_ctio;
	core_qla_free_cmd = qpair->tgt_counters.core_qla_free_cmd;
	num_q_full_sent = qpair->tgt_counters.num_q_full_sent;
	num_alloc_iocb_failed = qpair->tgt_counters.num_alloc_iocb_failed;
	num_term_xchg_sent = qpair->tgt_counters.num_term_xchg_sent;

	for (i = 0; i < vha->hw->max_qpairs; i++) {
		qpair = vha->hw->queue_pair_map[i];
		if (!qpair)
			continue;
		qla_core_sbt_cmd += qpair->tgt_counters.qla_core_sbt_cmd;
		core_qla_que_buf += qpair->tgt_counters.core_qla_que_buf;
		qla_core_ret_ctio += qpair->tgt_counters.qla_core_ret_ctio;
		core_qla_snd_status += qpair->tgt_counters.core_qla_snd_status;
		qla_core_ret_sta_ctio +=
		    qpair->tgt_counters.qla_core_ret_sta_ctio;
		core_qla_free_cmd += qpair->tgt_counters.core_qla_free_cmd;
		num_q_full_sent += qpair->tgt_counters.num_q_full_sent;
		num_alloc_iocb_failed +=
		    qpair->tgt_counters.num_alloc_iocb_failed;
		num_term_xchg_sent += qpair->tgt_counters.num_term_xchg_sent;
	}

	seq_puts(s, "Target Counters\n");
	seq_printf(s, "qla_core_sbt_cmd = %lld\n",
		qla_core_sbt_cmd);
	seq_printf(s, "qla_core_ret_sta_ctio = %lld\n",
		qla_core_ret_sta_ctio);
	seq_printf(s, "qla_core_ret_ctio = %lld\n",
		qla_core_ret_ctio);
	seq_printf(s, "core_qla_que_buf = %lld\n",
		core_qla_que_buf);
	seq_printf(s, "core_qla_snd_status = %lld\n",
		core_qla_snd_status);
	seq_printf(s, "core_qla_free_cmd = %lld\n",
		core_qla_free_cmd);
	seq_printf(s, "num alloc iocb failed = %lld\n",
		num_alloc_iocb_failed);
	seq_printf(s, "num term exchange sent = %lld\n",
		num_term_xchg_sent);
	seq_printf(s, "num Q full sent = %lld\n",
		num_q_full_sent);

	/* DIF stats */
	seq_printf(s, "DIF Inp Bytes = %lld\n",
		vha->qla_stats.qla_dif_stats.dif_input_bytes);
	seq_printf(s, "DIF Outp Bytes = %lld\n",
		vha->qla_stats.qla_dif_stats.dif_output_bytes);
	seq_printf(s, "DIF Inp Req = %lld\n",
		vha->qla_stats.qla_dif_stats.dif_input_requests);
	seq_printf(s, "DIF Outp Req = %lld\n",
		vha->qla_stats.qla_dif_stats.dif_output_requests);
	seq_printf(s, "DIF Guard err = %d\n",
		vha->qla_stats.qla_dif_stats.dif_guard_err);
	seq_printf(s, "DIF Ref tag err = %d\n",
		vha->qla_stats.qla_dif_stats.dif_ref_tag_err);
	seq_printf(s, "DIF App tag err = %d\n",
		vha->qla_stats.qla_dif_stats.dif_app_tag_err);
	return 0;
}

static int
qla_dfs_tgt_counters_open(struct inode *inode, struct file *file)
{
	struct scsi_qla_host *vha = inode->i_private;

	return single_open(file, qla_dfs_tgt_counters_show, vha);
}

static const struct file_operations dfs_tgt_counters_ops = {
	.open           = qla_dfs_tgt_counters_open,
	.read           = seq_read,
	.llseek         = seq_lseek,
	.release        = single_release,
};

static int
qla2x00_dfs_fce_show(struct seq_file *s, void *unused)
{
	scsi_qla_host_t *vha = s->private;
	uint32_t cnt;
	uint32_t *fce;
	uint64_t fce_start;
	struct qla_hw_data *ha = vha->hw;

	mutex_lock(&ha->fce_mutex);

	seq_puts(s, "FCE Trace Buffer\n");
	seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr);
	seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma);
	seq_puts(s, "FCE Enable Registers\n");
	seq_printf(s, "%08x %08x %08x %08x %08x %08x\n",
	    ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4],
	    ha->fce_mb[5], ha->fce_mb[6]);

	fce = (uint32_t *) ha->fce;
	fce_start = (unsigned long long) ha->fce_dma;
	for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) {
		if (cnt % 8 == 0)
			seq_printf(s, "\n%llx: ",
			    (unsigned long long)((cnt * 4) + fce_start));
		else
			seq_putc(s, ' ');
		seq_printf(s, "%08x", *fce++);
	}

	seq_puts(s, "\nEnd\n");

	mutex_unlock(&ha->fce_mutex);

	return 0;
}

static int
qla2x00_dfs_fce_open(struct inode *inode, struct file *file)
{
	scsi_qla_host_t *vha = inode->i_private;
	struct qla_hw_data *ha = vha->hw;
	int rval;

	if (!ha->flags.fce_enabled)
		goto out;

	mutex_lock(&ha->fce_mutex);

	/* Pause tracing to flush FCE buffers. */
	rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd);
	if (rval)
		ql_dbg(ql_dbg_user, vha, 0x705c,
		    "DebugFS: Unable to disable FCE (%d).\n", rval);

	ha->flags.fce_enabled = 0;

	mutex_unlock(&ha->fce_mutex);
out:
	return single_open(file, qla2x00_dfs_fce_show, vha);
}

static int
qla2x00_dfs_fce_release(struct inode *inode, struct file *file)
{
	scsi_qla_host_t *vha = inode->i_private;
	struct qla_hw_data *ha = vha->hw;
	int rval;

	if (ha->flags.fce_enabled)
		goto out;

	mutex_lock(&ha->fce_mutex);

	/* Re-enable FCE tracing. */
	ha->flags.fce_enabled = 1;
	memset(ha->fce, 0, fce_calc_size(ha->fce_bufs));
	rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs,
	    ha->fce_mb, &ha->fce_bufs);
	if (rval) {
		ql_dbg(ql_dbg_user, vha, 0x700d,
		    "DebugFS: Unable to reinitialize FCE (%d).\n", rval);
		ha->flags.fce_enabled = 0;
	}

	mutex_unlock(&ha->fce_mutex);
out:
	return single_release(inode, file);
}

static const struct file_operations dfs_fce_ops = {
	.open		= qla2x00_dfs_fce_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= qla2x00_dfs_fce_release,
};

static int
qla_dfs_naqp_show(struct seq_file *s, void *unused)
{
	struct scsi_qla_host *vha = s->private;
	struct qla_hw_data *ha = vha->hw;

	seq_printf(s, "%d\n", ha->tgt.num_act_qpairs);
	return 0;
}

static int
qla_dfs_naqp_open(struct inode *inode, struct file *file)
{
	struct scsi_qla_host *vha = inode->i_private;

	return single_open(file, qla_dfs_naqp_show, vha);
}

static ssize_t
qla_dfs_naqp_write(struct file *file, const char __user *buffer,
    size_t count, loff_t *pos)
{
	struct seq_file *s = file->private_data;
	struct scsi_qla_host *vha = s->private;
	struct qla_hw_data *ha = vha->hw;
	char *buf;
	int rc = 0;
	unsigned long num_act_qp;

	if (!(IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha))) {
		pr_err("host%ld: this adapter does not support Multi Q.",
		    vha->host_no);
		return -EINVAL;
	}

	if (!vha->flags.qpairs_available) {
		pr_err("host%ld: Driver is not setup with Multi Q.",
		    vha->host_no);
		return -EINVAL;
	}
	buf = memdup_user_nul(buffer, count);
	if (IS_ERR(buf)) {
		pr_err("host%ld: fail to copy user buffer.",
		    vha->host_no);
		return PTR_ERR(buf);
	}

	num_act_qp = simple_strtoul(buf, NULL, 0);

	if (num_act_qp >= vha->hw->max_qpairs) {
		pr_err("User set invalid number of qpairs %lu. Max = %d",
		    num_act_qp, vha->hw->max_qpairs);
		rc = -EINVAL;
		goto out_free;
	}

	if (num_act_qp != ha->tgt.num_act_qpairs) {
		ha->tgt.num_act_qpairs = num_act_qp;
		qlt_clr_qp_table(vha);
	}
	rc = count;
out_free:
	kfree(buf);
	return rc;
}

static const struct file_operations dfs_naqp_ops = {
	.open		= qla_dfs_naqp_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
	.write		= qla_dfs_naqp_write,
};


int
qla2x00_dfs_setup(scsi_qla_host_t *vha)
{
	struct qla_hw_data *ha = vha->hw;

	if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
	    !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
		goto out;
	if (!ha->fce)
		goto out;

	if (qla2x00_dfs_root)
		goto create_dir;

	atomic_set(&qla2x00_dfs_root_count, 0);
	qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL);

create_dir:
	if (ha->dfs_dir)
		goto create_nodes;

	mutex_init(&ha->fce_mutex);
	ha->dfs_dir = debugfs_create_dir(vha->host_str, qla2x00_dfs_root);

	atomic_inc(&qla2x00_dfs_root_count);

create_nodes:
	ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count",
	    S_IRUSR, ha->dfs_dir, vha, &dfs_fw_resource_cnt_ops);

	ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR,
	    ha->dfs_dir, vha, &dfs_tgt_counters_ops);

	ha->tgt.dfs_tgt_port_database = debugfs_create_file("tgt_port_database",
	    S_IRUSR,  ha->dfs_dir, vha, &dfs_tgt_port_database_ops);

	ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha,
	    &dfs_fce_ops);

	ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess",
		S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_sess_ops);

	if (IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha))
		ha->tgt.dfs_naqp = debugfs_create_file("naqp",
		    0400, ha->dfs_dir, vha, &dfs_naqp_ops);
out:
	return 0;
}

int
qla2x00_dfs_remove(scsi_qla_host_t *vha)
{
	struct qla_hw_data *ha = vha->hw;

	if (ha->tgt.dfs_naqp) {
		debugfs_remove(ha->tgt.dfs_naqp);
		ha->tgt.dfs_naqp = NULL;
	}

	if (ha->tgt.dfs_tgt_sess) {
		debugfs_remove(ha->tgt.dfs_tgt_sess);
		ha->tgt.dfs_tgt_sess = NULL;
	}

	if (ha->tgt.dfs_tgt_port_database) {
		debugfs_remove(ha->tgt.dfs_tgt_port_database);
		ha->tgt.dfs_tgt_port_database = NULL;
	}

	if (ha->dfs_fw_resource_cnt) {
		debugfs_remove(ha->dfs_fw_resource_cnt);
		ha->dfs_fw_resource_cnt = NULL;
	}

	if (ha->dfs_tgt_counters) {
		debugfs_remove(ha->dfs_tgt_counters);
		ha->dfs_tgt_counters = NULL;
	}

	if (ha->dfs_fce) {
		debugfs_remove(ha->dfs_fce);
		ha->dfs_fce = NULL;
	}

	if (ha->dfs_dir) {
		debugfs_remove(ha->dfs_dir);
		ha->dfs_dir = NULL;
		atomic_dec(&qla2x00_dfs_root_count);
	}

	if (atomic_read(&qla2x00_dfs_root_count) == 0 &&
	    qla2x00_dfs_root) {
		debugfs_remove(qla2x00_dfs_root);
		qla2x00_dfs_root = NULL;
	}

	return 0;
}