summaryrefslogtreecommitdiffstats
path: root/kernel/drivers/misc/mic/host/mic_debugfs.c
blob: 10581600777ab38da39f209d352e2e43e5d4fa97 (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
/*
 * Intel MIC Platform Software Stack (MPSS)
 *
 * Copyright(c) 2013 Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2, as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * The full GNU General Public License is included in this distribution in
 * the file called "COPYING".
 *
 * Intel MIC Host driver.
 *
 */
#include <linux/debugfs.h>
#include <linux/pci.h>
#include <linux/seq_file.h>

#include <linux/mic_common.h>
#include "../common/mic_dev.h"
#include "mic_device.h"
#include "mic_smpt.h"
#include "mic_virtio.h"

/* Debugfs parent dir */
static struct dentry *mic_dbg;

static int mic_smpt_show(struct seq_file *s, void *pos)
{
	int i;
	struct mic_device *mdev = s->private;
	unsigned long flags;

	seq_printf(s, "MIC %-2d |%-10s| %-14s %-10s\n",
		   mdev->id, "SMPT entry", "SW DMA addr", "RefCount");
	seq_puts(s, "====================================================\n");

	if (mdev->smpt) {
		struct mic_smpt_info *smpt_info = mdev->smpt;
		spin_lock_irqsave(&smpt_info->smpt_lock, flags);
		for (i = 0; i < smpt_info->info.num_reg; i++) {
			seq_printf(s, "%9s|%-10d| %-#14llx %-10lld\n",
				   " ",  i, smpt_info->entry[i].dma_addr,
				   smpt_info->entry[i].ref_count);
		}
		spin_unlock_irqrestore(&smpt_info->smpt_lock, flags);
	}
	seq_puts(s, "====================================================\n");
	return 0;
}

static int mic_smpt_debug_open(struct inode *inode, struct file *file)
{
	return single_open(file, mic_smpt_show, inode->i_private);
}

static int mic_smpt_debug_release(struct inode *inode, struct file *file)
{
	return single_release(inode, file);
}

static const struct file_operations smpt_file_ops = {
	.owner   = THIS_MODULE,
	.open    = mic_smpt_debug_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = mic_smpt_debug_release
};

static int mic_post_code_show(struct seq_file *s, void *pos)
{
	struct mic_device *mdev = s->private;
	u32 reg = mdev->ops->get_postcode(mdev);

	seq_printf(s, "%c%c", reg & 0xff, (reg >> 8) & 0xff);
	return 0;
}

static int mic_post_code_debug_open(struct inode *inode, struct file *file)
{
	return single_open(file, mic_post_code_show, inode->i_private);
}

static int mic_post_code_debug_release(struct inode *inode, struct file *file)
{
	return single_release(inode, file);
}

static const struct file_operations post_code_ops = {
	.owner   = THIS_MODULE,
	.open    = mic_post_code_debug_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = mic_post_code_debug_release
};

static int mic_dp_show(struct seq_file *s, void *pos)
{
	struct mic_device *mdev = s->private;
	struct mic_device_desc *d;
	struct mic_device_ctrl *dc;
	struct mic_vqconfig *vqconfig;
	__u32 *features;
	__u8 *config;
	struct mic_bootparam *bootparam = mdev->dp;
	int i, j;

	seq_printf(s, "Bootparam: magic 0x%x\n",
		   bootparam->magic);
	seq_printf(s, "Bootparam: h2c_config_db %d\n",
		   bootparam->h2c_config_db);
	seq_printf(s, "Bootparam: node_id %d\n",
		   bootparam->node_id);
	seq_printf(s, "Bootparam: c2h_scif_db %d\n",
		   bootparam->c2h_scif_db);
	seq_printf(s, "Bootparam: h2c_scif_db %d\n",
		   bootparam->h2c_scif_db);
	seq_printf(s, "Bootparam: scif_host_dma_addr 0x%llx\n",
		   bootparam->scif_host_dma_addr);
	seq_printf(s, "Bootparam: scif_card_dma_addr 0x%llx\n",
		   bootparam->scif_card_dma_addr);


	for (i = sizeof(*bootparam); i < MIC_DP_SIZE;
	     i += mic_total_desc_size(d)) {
		d = mdev->dp + i;
		dc = (void *)d + mic_aligned_desc_size(d);

		/* end of list */
		if (d->type == 0)
			break;

		if (d->type == -1)
			continue;

		seq_printf(s, "Type %d ", d->type);
		seq_printf(s, "Num VQ %d ", d->num_vq);
		seq_printf(s, "Feature Len %d\n", d->feature_len);
		seq_printf(s, "Config Len %d ", d->config_len);
		seq_printf(s, "Shutdown Status %d\n", d->status);

		for (j = 0; j < d->num_vq; j++) {
			vqconfig = mic_vq_config(d) + j;
			seq_printf(s, "vqconfig[%d]: ", j);
			seq_printf(s, "address 0x%llx ", vqconfig->address);
			seq_printf(s, "num %d ", vqconfig->num);
			seq_printf(s, "used address 0x%llx\n",
				   vqconfig->used_address);
		}

		features = (__u32 *)mic_vq_features(d);
		seq_printf(s, "Features: Host 0x%x ", features[0]);
		seq_printf(s, "Guest 0x%x\n", features[1]);

		config = mic_vq_configspace(d);
		for (j = 0; j < d->config_len; j++)
			seq_printf(s, "config[%d]=%d\n", j, config[j]);

		seq_puts(s, "Device control:\n");
		seq_printf(s, "Config Change %d ", dc->config_change);
		seq_printf(s, "Vdev reset %d\n", dc->vdev_reset);
		seq_printf(s, "Guest Ack %d ", dc->guest_ack);
		seq_printf(s, "Host ack %d\n", dc->host_ack);
		seq_printf(s, "Used address updated %d ",
			   dc->used_address_updated);
		seq_printf(s, "Vdev 0x%llx\n", dc->vdev);
		seq_printf(s, "c2h doorbell %d ", dc->c2h_vdev_db);
		seq_printf(s, "h2c doorbell %d\n", dc->h2c_vdev_db);
	}

	return 0;
}

static int mic_dp_debug_open(struct inode *inode, struct file *file)
{
	return single_open(file, mic_dp_show, inode->i_private);
}

static int mic_dp_debug_release(struct inode *inode, struct file *file)
{
	return single_release(inode, file);
}

static const struct file_operations dp_ops = {
	.owner   = THIS_MODULE,
	.open    = mic_dp_debug_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = mic_dp_debug_release
};

static int mic_vdev_info_show(struct seq_file *s, void *unused)
{
	struct mic_device *mdev = s->private;
	struct list_head *pos, *tmp;
	struct mic_vdev *mvdev;
	int i, j;

	mutex_lock(&mdev->mic_mutex);
	list_for_each_safe(pos, tmp, &mdev->vdev_list) {
		mvdev = list_entry(pos, struct mic_vdev, list);
		seq_printf(s, "VDEV type %d state %s in %ld out %ld\n",
			   mvdev->virtio_id,
			   mic_vdevup(mvdev) ? "UP" : "DOWN",
			   mvdev->in_bytes,
			   mvdev->out_bytes);
		for (i = 0; i < MIC_MAX_VRINGS; i++) {
			struct vring_desc *desc;
			struct vring_avail *avail;
			struct vring_used *used;
			struct mic_vringh *mvr = &mvdev->mvr[i];
			struct vringh *vrh = &mvr->vrh;
			int num = vrh->vring.num;
			if (!num)
				continue;
			desc = vrh->vring.desc;
			seq_printf(s, "vring i %d avail_idx %d",
				   i, mvr->vring.info->avail_idx & (num - 1));
			seq_printf(s, " vring i %d avail_idx %d\n",
				   i, mvr->vring.info->avail_idx);
			seq_printf(s, "vrh i %d weak_barriers %d",
				   i, vrh->weak_barriers);
			seq_printf(s, " last_avail_idx %d last_used_idx %d",
				   vrh->last_avail_idx, vrh->last_used_idx);
			seq_printf(s, " completed %d\n", vrh->completed);
			for (j = 0; j < num; j++) {
				seq_printf(s, "desc[%d] addr 0x%llx len %d",
					   j, desc->addr, desc->len);
				seq_printf(s, " flags 0x%x next %d\n",
					   desc->flags, desc->next);
				desc++;
			}
			avail = vrh->vring.avail;
			seq_printf(s, "avail flags 0x%x idx %d\n",
				   vringh16_to_cpu(vrh, avail->flags),
				   vringh16_to_cpu(vrh, avail->idx) & (num - 1));
			seq_printf(s, "avail flags 0x%x idx %d\n",
				   vringh16_to_cpu(vrh, avail->flags),
				   vringh16_to_cpu(vrh, avail->idx));
			for (j = 0; j < num; j++)
				seq_printf(s, "avail ring[%d] %d\n",
					   j, avail->ring[j]);
			used = vrh->vring.used;
			seq_printf(s, "used flags 0x%x idx %d\n",
				   vringh16_to_cpu(vrh, used->flags),
				   vringh16_to_cpu(vrh, used->idx) & (num - 1));
			seq_printf(s, "used flags 0x%x idx %d\n",
				   vringh16_to_cpu(vrh, used->flags),
				   vringh16_to_cpu(vrh, used->idx));
			for (j = 0; j < num; j++)
				seq_printf(s, "used ring[%d] id %d len %d\n",
					   j, vringh32_to_cpu(vrh,
							      used->ring[j].id),
					   vringh32_to_cpu(vrh,
							   used->ring[j].len));
		}
	}
	mutex_unlock(&mdev->mic_mutex);

	return 0;
}

static int mic_vdev_info_debug_open(struct inode *inode, struct file *file)
{
	return single_open(file, mic_vdev_info_show, inode->i_private);
}

static int mic_vdev_info_debug_release(struct inode *inode, struct file *file)
{
	return single_release(inode, file);
}

static const struct file_operations vdev_info_ops = {
	.owner   = THIS_MODULE,
	.open    = mic_vdev_info_debug_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = mic_vdev_info_debug_release
};

static int mic_msi_irq_info_show(struct seq_file *s, void *pos)
{
	struct mic_device *mdev  = s->private;
	int reg;
	int i, j;
	u16 entry;
	u16 vector;
	struct pci_dev *pdev = mdev->pdev;

	if (pci_dev_msi_enabled(pdev)) {
		for (i = 0; i < mdev->irq_info.num_vectors; i++) {
			if (pdev->msix_enabled) {
				entry = mdev->irq_info.msix_entries[i].entry;
				vector = mdev->irq_info.msix_entries[i].vector;
			} else {
				entry = 0;
				vector = pdev->irq;
			}

			reg = mdev->intr_ops->read_msi_to_src_map(mdev, entry);

			seq_printf(s, "%s %-10d %s %-10d MXAR[%d]: %08X\n",
				   "IRQ:", vector, "Entry:", entry, i, reg);

			seq_printf(s, "%-10s", "offset:");
			for (j = (MIC_NUM_OFFSETS - 1); j >= 0; j--)
				seq_printf(s, "%4d ", j);
			seq_puts(s, "\n");


			seq_printf(s, "%-10s", "count:");
			for (j = (MIC_NUM_OFFSETS - 1); j >= 0; j--)
				seq_printf(s, "%4d ",
					   (mdev->irq_info.mic_msi_map[i] &
					   BIT(j)) ? 1 : 0);
			seq_puts(s, "\n\n");
		}
	} else {
		seq_puts(s, "MSI/MSIx interrupts not enabled\n");
	}

	return 0;
}

static int mic_msi_irq_info_debug_open(struct inode *inode, struct file *file)
{
	return single_open(file, mic_msi_irq_info_show, inode->i_private);
}

static int
mic_msi_irq_info_debug_release(struct inode *inode, struct file *file)
{
	return single_release(inode, file);
}

static const struct file_operations msi_irq_info_ops = {
	.owner   = THIS_MODULE,
	.open    = mic_msi_irq_info_debug_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = mic_msi_irq_info_debug_release
};

/**
 * mic_create_debug_dir - Initialize MIC debugfs entries.
 */
void mic_create_debug_dir(struct mic_device *mdev)
{
	char name[16];

	if (!mic_dbg)
		return;

	scnprintf(name, sizeof(name), "mic%d", mdev->id);
	mdev->dbg_dir = debugfs_create_dir(name, mic_dbg);
	if (!mdev->dbg_dir)
		return;

	debugfs_create_file("smpt", 0444, mdev->dbg_dir, mdev, &smpt_file_ops);

	debugfs_create_file("post_code", 0444, mdev->dbg_dir, mdev,
			    &post_code_ops);

	debugfs_create_file("dp", 0444, mdev->dbg_dir, mdev, &dp_ops);

	debugfs_create_file("vdev_info", 0444, mdev->dbg_dir, mdev,
			    &vdev_info_ops);

	debugfs_create_file("msi_irq_info", 0444, mdev->dbg_dir, mdev,
			    &msi_irq_info_ops);
}

/**
 * mic_delete_debug_dir - Uninitialize MIC debugfs entries.
 */
void mic_delete_debug_dir(struct mic_device *mdev)
{
	if (!mdev->dbg_dir)
		return;

	debugfs_remove_recursive(mdev->dbg_dir);
}

/**
 * mic_init_debugfs - Initialize global debugfs entry.
 */
void __init mic_init_debugfs(void)
{
	mic_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL);
	if (!mic_dbg)
		pr_err("can't create debugfs dir\n");
}

/**
 * mic_exit_debugfs - Uninitialize global debugfs entry
 */
void mic_exit_debugfs(void)
{
	debugfs_remove(mic_dbg);
}