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Linux 4.1.16
[linux/fpc-iii.git] / drivers / misc / mic / host / mic_debugfs.c
blob687e9aacf3bbf769d9ccbdde1e8a1f00baf2dd55
1 /*
2 * Intel MIC Platform Software Stack (MPSS)
3 *
4 * Copyright(c) 2013 Intel Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License, version 2, as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * The full GNU General Public License is included in this distribution in
16 * the file called "COPYING".
17 *
18 * Intel MIC Host driver.
19 *
20 */
21 #include <linux/debugfs.h>
22 #include <linux/pci.h>
23 #include <linux/seq_file.h>
24
25 #include <linux/mic_common.h>
26 #include "../common/mic_dev.h"
27 #include "mic_device.h"
28 #include "mic_smpt.h"
29 #include "mic_virtio.h"
30
31 /* Debugfs parent dir */
32 static struct dentry *mic_dbg;
33
34 /**
35 * mic_log_buf_show - Display MIC kernel log buffer.
36 *
37 * log_buf addr/len is read from System.map by user space
38 * and populated in sysfs entries.
39 */
40 static int mic_log_buf_show(struct seq_file *s, void *unused)
41 {
42 void __iomem *log_buf_va;
43 int __iomem *log_buf_len_va;
44 struct mic_device *mdev = s->private;
45 void *kva;
46 int size;
47 unsigned long aper_offset;
48
49 if (!mdev || !mdev->log_buf_addr || !mdev->log_buf_len)
50 goto done;
51 /*
52 * Card kernel will never be relocated and any kernel text/data mapping
53 * can be translated to phys address by subtracting __START_KERNEL_map.
54 */
55 aper_offset = (unsigned long)mdev->log_buf_len - __START_KERNEL_map;
56 log_buf_len_va = mdev->aper.va + aper_offset;
57 aper_offset = (unsigned long)mdev->log_buf_addr - __START_KERNEL_map;
58 log_buf_va = mdev->aper.va + aper_offset;
59 size = ioread32(log_buf_len_va);
60
61 kva = kmalloc(size, GFP_KERNEL);
62 if (!kva)
63 goto done;
64 mutex_lock(&mdev->mic_mutex);
65 memcpy_fromio(kva, log_buf_va, size);
66 switch (mdev->state) {
67 case MIC_ONLINE:
68 /* Fall through */
69 case MIC_SHUTTING_DOWN:
70 seq_write(s, kva, size);
71 break;
72 default:
73 break;
74 }
75 mutex_unlock(&mdev->mic_mutex);
76 kfree(kva);
77 done:
78 return 0;
79 }
80
81 static int mic_log_buf_open(struct inode *inode, struct file *file)
82 {
83 return single_open(file, mic_log_buf_show, inode->i_private);
84 }
85
86 static int mic_log_buf_release(struct inode *inode, struct file *file)
87 {
88 return single_release(inode, file);
89 }
90
91 static const struct file_operations log_buf_ops = {
92 .owner = THIS_MODULE,
93 .open = mic_log_buf_open,
94 .read = seq_read,
95 .llseek = seq_lseek,
96 .release = mic_log_buf_release
97 };
98
99 static int mic_smpt_show(struct seq_file *s, void *pos)
100 {
101 int i;
102 struct mic_device *mdev = s->private;
103 unsigned long flags;
104
105 seq_printf(s, "MIC %-2d |%-10s| %-14s %-10s\n",
106 mdev->id, "SMPT entry", "SW DMA addr", "RefCount");
107 seq_puts(s, "====================================================\n");
108
109 if (mdev->smpt) {
110 struct mic_smpt_info *smpt_info = mdev->smpt;
111 spin_lock_irqsave(&smpt_info->smpt_lock, flags);
112 for (i = 0; i < smpt_info->info.num_reg; i++) {
113 seq_printf(s, "%9s|%-10d| %-#14llx %-10lld\n",
114 " ", i, smpt_info->entry[i].dma_addr,
115 smpt_info->entry[i].ref_count);
116 }
117 spin_unlock_irqrestore(&smpt_info->smpt_lock, flags);
118 }
119 seq_puts(s, "====================================================\n");
120 return 0;
121 }
122
123 static int mic_smpt_debug_open(struct inode *inode, struct file *file)
124 {
125 return single_open(file, mic_smpt_show, inode->i_private);
126 }
127
128 static int mic_smpt_debug_release(struct inode *inode, struct file *file)
129 {
130 return single_release(inode, file);
131 }
132
133 static const struct file_operations smpt_file_ops = {
134 .owner = THIS_MODULE,
135 .open = mic_smpt_debug_open,
136 .read = seq_read,
137 .llseek = seq_lseek,
138 .release = mic_smpt_debug_release
139 };
140
141 static int mic_soft_reset_show(struct seq_file *s, void *pos)
142 {
143 struct mic_device *mdev = s->private;
144
145 mic_stop(mdev, true);
146 return 0;
147 }
148
149 static int mic_soft_reset_debug_open(struct inode *inode, struct file *file)
150 {
151 return single_open(file, mic_soft_reset_show, inode->i_private);
152 }
153
154 static int mic_soft_reset_debug_release(struct inode *inode, struct file *file)
155 {
156 return single_release(inode, file);
157 }
158
159 static const struct file_operations soft_reset_ops = {
160 .owner = THIS_MODULE,
161 .open = mic_soft_reset_debug_open,
162 .read = seq_read,
163 .llseek = seq_lseek,
164 .release = mic_soft_reset_debug_release
165 };
166
167 static int mic_post_code_show(struct seq_file *s, void *pos)
168 {
169 struct mic_device *mdev = s->private;
170 u32 reg = mdev->ops->get_postcode(mdev);
171
172 seq_printf(s, "%c%c", reg & 0xff, (reg >> 8) & 0xff);
173 return 0;
174 }
175
176 static int mic_post_code_debug_open(struct inode *inode, struct file *file)
177 {
178 return single_open(file, mic_post_code_show, inode->i_private);
179 }
180
181 static int mic_post_code_debug_release(struct inode *inode, struct file *file)
182 {
183 return single_release(inode, file);
184 }
185
186 static const struct file_operations post_code_ops = {
187 .owner = THIS_MODULE,
188 .open = mic_post_code_debug_open,
189 .read = seq_read,
190 .llseek = seq_lseek,
191 .release = mic_post_code_debug_release
192 };
193
194 static int mic_dp_show(struct seq_file *s, void *pos)
195 {
196 struct mic_device *mdev = s->private;
197 struct mic_device_desc *d;
198 struct mic_device_ctrl *dc;
199 struct mic_vqconfig *vqconfig;
200 __u32 *features;
201 __u8 *config;
202 struct mic_bootparam *bootparam = mdev->dp;
203 int i, j;
204
205 seq_printf(s, "Bootparam: magic 0x%x\n",
206 bootparam->magic);
207 seq_printf(s, "Bootparam: h2c_shutdown_db %d\n",
208 bootparam->h2c_shutdown_db);
209 seq_printf(s, "Bootparam: h2c_config_db %d\n",
210 bootparam->h2c_config_db);
211 seq_printf(s, "Bootparam: c2h_shutdown_db %d\n",
212 bootparam->c2h_shutdown_db);
213 seq_printf(s, "Bootparam: shutdown_status %d\n",
214 bootparam->shutdown_status);
215 seq_printf(s, "Bootparam: shutdown_card %d\n",
216 bootparam->shutdown_card);
217
218 for (i = sizeof(*bootparam); i < MIC_DP_SIZE;
219 i += mic_total_desc_size(d)) {
220 d = mdev->dp + i;
221 dc = (void *)d + mic_aligned_desc_size(d);
222
223 /* end of list */
224 if (d->type == 0)
225 break;
226
227 if (d->type == -1)
228 continue;
229
230 seq_printf(s, "Type %d ", d->type);
231 seq_printf(s, "Num VQ %d ", d->num_vq);
232 seq_printf(s, "Feature Len %d\n", d->feature_len);
233 seq_printf(s, "Config Len %d ", d->config_len);
234 seq_printf(s, "Shutdown Status %d\n", d->status);
235
236 for (j = 0; j < d->num_vq; j++) {
237 vqconfig = mic_vq_config(d) + j;
238 seq_printf(s, "vqconfig[%d]: ", j);
239 seq_printf(s, "address 0x%llx ", vqconfig->address);
240 seq_printf(s, "num %d ", vqconfig->num);
241 seq_printf(s, "used address 0x%llx\n",
242 vqconfig->used_address);
243 }
244
245 features = (__u32 *)mic_vq_features(d);
246 seq_printf(s, "Features: Host 0x%x ", features[0]);
247 seq_printf(s, "Guest 0x%x\n", features[1]);
248
249 config = mic_vq_configspace(d);
250 for (j = 0; j < d->config_len; j++)
251 seq_printf(s, "config[%d]=%d\n", j, config[j]);
252
253 seq_puts(s, "Device control:\n");
254 seq_printf(s, "Config Change %d ", dc->config_change);
255 seq_printf(s, "Vdev reset %d\n", dc->vdev_reset);
256 seq_printf(s, "Guest Ack %d ", dc->guest_ack);
257 seq_printf(s, "Host ack %d\n", dc->host_ack);
258 seq_printf(s, "Used address updated %d ",
259 dc->used_address_updated);
260 seq_printf(s, "Vdev 0x%llx\n", dc->vdev);
261 seq_printf(s, "c2h doorbell %d ", dc->c2h_vdev_db);
262 seq_printf(s, "h2c doorbell %d\n", dc->h2c_vdev_db);
263 }
264
265 return 0;
266 }
267
268 static int mic_dp_debug_open(struct inode *inode, struct file *file)
269 {
270 return single_open(file, mic_dp_show, inode->i_private);
271 }
272
273 static int mic_dp_debug_release(struct inode *inode, struct file *file)
274 {
275 return single_release(inode, file);
276 }
277
278 static const struct file_operations dp_ops = {
279 .owner = THIS_MODULE,
280 .open = mic_dp_debug_open,
281 .read = seq_read,
282 .llseek = seq_lseek,
283 .release = mic_dp_debug_release
284 };
285
286 static int mic_vdev_info_show(struct seq_file *s, void *unused)
287 {
288 struct mic_device *mdev = s->private;
289 struct list_head *pos, *tmp;
290 struct mic_vdev *mvdev;
291 int i, j;
292
293 mutex_lock(&mdev->mic_mutex);
294 list_for_each_safe(pos, tmp, &mdev->vdev_list) {
295 mvdev = list_entry(pos, struct mic_vdev, list);
296 seq_printf(s, "VDEV type %d state %s in %ld out %ld\n",
297 mvdev->virtio_id,
298 mic_vdevup(mvdev) ? "UP" : "DOWN",
299 mvdev->in_bytes,
300 mvdev->out_bytes);
301 for (i = 0; i < MIC_MAX_VRINGS; i++) {
302 struct vring_desc *desc;
303 struct vring_avail *avail;
304 struct vring_used *used;
305 struct mic_vringh *mvr = &mvdev->mvr[i];
306 struct vringh *vrh = &mvr->vrh;
307 int num = vrh->vring.num;
308 if (!num)
309 continue;
310 desc = vrh->vring.desc;
311 seq_printf(s, "vring i %d avail_idx %d",
312 i, mvr->vring.info->avail_idx & (num - 1));
313 seq_printf(s, " vring i %d avail_idx %d\n",
314 i, mvr->vring.info->avail_idx);
315 seq_printf(s, "vrh i %d weak_barriers %d",
316 i, vrh->weak_barriers);
317 seq_printf(s, " last_avail_idx %d last_used_idx %d",
318 vrh->last_avail_idx, vrh->last_used_idx);
319 seq_printf(s, " completed %d\n", vrh->completed);
320 for (j = 0; j < num; j++) {
321 seq_printf(s, "desc[%d] addr 0x%llx len %d",
322 j, desc->addr, desc->len);
323 seq_printf(s, " flags 0x%x next %d\n",
324 desc->flags, desc->next);
325 desc++;
326 }
327 avail = vrh->vring.avail;
328 seq_printf(s, "avail flags 0x%x idx %d\n",
329 vringh16_to_cpu(vrh, avail->flags),
330 vringh16_to_cpu(vrh, avail->idx) & (num - 1));
331 seq_printf(s, "avail flags 0x%x idx %d\n",
332 vringh16_to_cpu(vrh, avail->flags),
333 vringh16_to_cpu(vrh, avail->idx));
334 for (j = 0; j < num; j++)
335 seq_printf(s, "avail ring[%d] %d\n",
336 j, avail->ring[j]);
337 used = vrh->vring.used;
338 seq_printf(s, "used flags 0x%x idx %d\n",
339 vringh16_to_cpu(vrh, used->flags),
340 vringh16_to_cpu(vrh, used->idx) & (num - 1));
341 seq_printf(s, "used flags 0x%x idx %d\n",
342 vringh16_to_cpu(vrh, used->flags),
343 vringh16_to_cpu(vrh, used->idx));
344 for (j = 0; j < num; j++)
345 seq_printf(s, "used ring[%d] id %d len %d\n",
346 j, vringh32_to_cpu(vrh,
347 used->ring[j].id),
348 vringh32_to_cpu(vrh,
349 used->ring[j].len));
350 }
351 }
352 mutex_unlock(&mdev->mic_mutex);
353
354 return 0;
355 }
356
357 static int mic_vdev_info_debug_open(struct inode *inode, struct file *file)
358 {
359 return single_open(file, mic_vdev_info_show, inode->i_private);
360 }
361
362 static int mic_vdev_info_debug_release(struct inode *inode, struct file *file)
363 {
364 return single_release(inode, file);
365 }
366
367 static const struct file_operations vdev_info_ops = {
368 .owner = THIS_MODULE,
369 .open = mic_vdev_info_debug_open,
370 .read = seq_read,
371 .llseek = seq_lseek,
372 .release = mic_vdev_info_debug_release
373 };
374
375 static int mic_msi_irq_info_show(struct seq_file *s, void *pos)
376 {
377 struct mic_device *mdev = s->private;
378 int reg;
379 int i, j;
380 u16 entry;
381 u16 vector;
382 struct pci_dev *pdev = container_of(mdev->sdev->parent,
383 struct pci_dev, dev);
384
385 if (pci_dev_msi_enabled(pdev)) {
386 for (i = 0; i < mdev->irq_info.num_vectors; i++) {
387 if (pdev->msix_enabled) {
388 entry = mdev->irq_info.msix_entries[i].entry;
389 vector = mdev->irq_info.msix_entries[i].vector;
390 } else {
391 entry = 0;
392 vector = pdev->irq;
393 }
394
395 reg = mdev->intr_ops->read_msi_to_src_map(mdev, entry);
396
397 seq_printf(s, "%s %-10d %s %-10d MXAR[%d]: %08X\n",
398 "IRQ:", vector, "Entry:", entry, i, reg);
399
400 seq_printf(s, "%-10s", "offset:");
401 for (j = (MIC_NUM_OFFSETS - 1); j >= 0; j--)
402 seq_printf(s, "%4d ", j);
403 seq_puts(s, "\n");
404
405
406 seq_printf(s, "%-10s", "count:");
407 for (j = (MIC_NUM_OFFSETS - 1); j >= 0; j--)
408 seq_printf(s, "%4d ",
409 (mdev->irq_info.mic_msi_map[i] &
410 BIT(j)) ? 1 : 0);
411 seq_puts(s, "\n\n");
412 }
413 } else {
414 seq_puts(s, "MSI/MSIx interrupts not enabled\n");
415 }
416
417 return 0;
418 }
419
420 static int mic_msi_irq_info_debug_open(struct inode *inode, struct file *file)
421 {
422 return single_open(file, mic_msi_irq_info_show, inode->i_private);
423 }
424
425 static int
426 mic_msi_irq_info_debug_release(struct inode *inode, struct file *file)
427 {
428 return single_release(inode, file);
429 }
430
431 static const struct file_operations msi_irq_info_ops = {
432 .owner = THIS_MODULE,
433 .open = mic_msi_irq_info_debug_open,
434 .read = seq_read,
435 .llseek = seq_lseek,
436 .release = mic_msi_irq_info_debug_release
437 };
438
439 /**
440 * mic_create_debug_dir - Initialize MIC debugfs entries.
441 */
442 void mic_create_debug_dir(struct mic_device *mdev)
443 {
444 if (!mic_dbg)
445 return;
446
447 mdev->dbg_dir = debugfs_create_dir(dev_name(mdev->sdev), mic_dbg);
448 if (!mdev->dbg_dir)
449 return;
450
451 debugfs_create_file("log_buf", 0444, mdev->dbg_dir, mdev, &log_buf_ops);
452
453 debugfs_create_file("smpt", 0444, mdev->dbg_dir, mdev, &smpt_file_ops);
454
455 debugfs_create_file("soft_reset", 0444, mdev->dbg_dir, mdev,
456 &soft_reset_ops);
457
458 debugfs_create_file("post_code", 0444, mdev->dbg_dir, mdev,
459 &post_code_ops);
460
461 debugfs_create_file("dp", 0444, mdev->dbg_dir, mdev, &dp_ops);
462
463 debugfs_create_file("vdev_info", 0444, mdev->dbg_dir, mdev,
464 &vdev_info_ops);
465
466 debugfs_create_file("msi_irq_info", 0444, mdev->dbg_dir, mdev,
467 &msi_irq_info_ops);
468 }
469
470 /**
471 * mic_delete_debug_dir - Uninitialize MIC debugfs entries.
472 */
473 void mic_delete_debug_dir(struct mic_device *mdev)
474 {
475 if (!mdev->dbg_dir)
476 return;
477
478 debugfs_remove_recursive(mdev->dbg_dir);
479 }
480
481 /**
482 * mic_init_debugfs - Initialize global debugfs entry.
483 */
484 void __init mic_init_debugfs(void)
485 {
486 mic_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL);
487 if (!mic_dbg)
488 pr_err("can't create debugfs dir\n");
489 }
490
491 /**
492 * mic_exit_debugfs - Uninitialize global debugfs entry
493 */
494 void mic_exit_debugfs(void)
495 {
496 debugfs_remove(mic_dbg);
497 }
Linux with added FPC-III support