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authorFrank Haverkamp <haver@linux.vnet.ibm.com>2013-12-09 07:30:42 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-12-18 19:51:15 -0500
commitc59330cd7c15d550c4edbb8cd49d48e6d65ed47f (patch)
treee7447d7a2b6434f647ccc8c2b5429640463a49b3 /drivers/misc
parent67f4addbb8fe68b9de8e8042c5367bd17db36520 (diff)
GenWQE Debugfs interfaces
Debugfs interfaces for the GenWQE card. Help to debug potential problems. Dump internal chip state for debugging and failure determination. Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com> Co-authors: Joerg-Stephan Vogt <jsvogt@de.ibm.com>, Michael Jung <MIJUNG@de.ibm.com>, Michael Ruettger <michael@ibmra.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/genwqe/card_debugfs.c500
1 files changed, 500 insertions, 0 deletions
diff --git a/drivers/misc/genwqe/card_debugfs.c b/drivers/misc/genwqe/card_debugfs.c
new file mode 100644
index 000000000000..3bfdc07a7248
--- /dev/null
+++ b/drivers/misc/genwqe/card_debugfs.c
@@ -0,0 +1,500 @@
1/**
2 * IBM Accelerator Family 'GenWQE'
3 *
4 * (C) Copyright IBM Corp. 2013
5 *
6 * Author: Frank Haverkamp <haver@linux.vnet.ibm.com>
7 * Author: Joerg-Stephan Vogt <jsvogt@de.ibm.com>
8 * Author: Michael Jung <mijung@de.ibm.com>
9 * Author: Michael Ruettger <michael@ibmra.de>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License (version 2 only)
13 * as published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 */
20
21/*
22 * Debugfs interfaces for the GenWQE card. Help to debug potential
23 * problems. Dump internal chip state for debugging and failure
24 * determination.
25 */
26
27#include <linux/module.h>
28#include <linux/kernel.h>
29#include <linux/init.h>
30#include <linux/debugfs.h>
31#include <linux/seq_file.h>
32#include <linux/uaccess.h>
33
34#include "card_base.h"
35#include "card_ddcb.h"
36
37#define GENWQE_DEBUGFS_RO(_name, _showfn) \
38 static int genwqe_debugfs_##_name##_open(struct inode *inode, \
39 struct file *file) \
40 { \
41 return single_open(file, _showfn, inode->i_private); \
42 } \
43 static const struct file_operations genwqe_##_name##_fops = { \
44 .open = genwqe_debugfs_##_name##_open, \
45 .read = seq_read, \
46 .llseek = seq_lseek, \
47 .release = single_release, \
48 }
49
50static void dbg_uidn_show(struct seq_file *s, struct genwqe_reg *regs,
51 int entries)
52{
53 unsigned int i;
54 u32 v_hi, v_lo;
55
56 for (i = 0; i < entries; i++) {
57 v_hi = (regs[i].val >> 32) & 0xffffffff;
58 v_lo = (regs[i].val) & 0xffffffff;
59
60 seq_printf(s, " 0x%08x 0x%08x 0x%08x 0x%08x EXT_ERR_REC\n",
61 regs[i].addr, regs[i].idx, v_hi, v_lo);
62 }
63}
64
65static int curr_dbg_uidn_show(struct seq_file *s, void *unused, int uid)
66{
67 struct genwqe_dev *cd = s->private;
68 int entries;
69 struct genwqe_reg *regs;
70
71 entries = genwqe_ffdc_buff_size(cd, uid);
72 if (entries < 0)
73 return -EINVAL;
74
75 if (entries == 0)
76 return 0;
77
78 regs = kcalloc(entries, sizeof(*regs), GFP_KERNEL);
79 if (regs == NULL)
80 return -ENOMEM;
81
82 genwqe_stop_traps(cd); /* halt the traps while dumping data */
83 genwqe_ffdc_buff_read(cd, uid, regs, entries);
84 genwqe_start_traps(cd);
85
86 dbg_uidn_show(s, regs, entries);
87 kfree(regs);
88 return 0;
89}
90
91static int genwqe_curr_dbg_uid0_show(struct seq_file *s, void *unused)
92{
93 return curr_dbg_uidn_show(s, unused, 0);
94}
95
96GENWQE_DEBUGFS_RO(curr_dbg_uid0, genwqe_curr_dbg_uid0_show);
97
98static int genwqe_curr_dbg_uid1_show(struct seq_file *s, void *unused)
99{
100 return curr_dbg_uidn_show(s, unused, 1);
101}
102
103GENWQE_DEBUGFS_RO(curr_dbg_uid1, genwqe_curr_dbg_uid1_show);
104
105static int genwqe_curr_dbg_uid2_show(struct seq_file *s, void *unused)
106{
107 return curr_dbg_uidn_show(s, unused, 2);
108}
109
110GENWQE_DEBUGFS_RO(curr_dbg_uid2, genwqe_curr_dbg_uid2_show);
111
112static int prev_dbg_uidn_show(struct seq_file *s, void *unused, int uid)
113{
114 struct genwqe_dev *cd = s->private;
115
116 dbg_uidn_show(s, cd->ffdc[uid].regs, cd->ffdc[uid].entries);
117 return 0;
118}
119
120static int genwqe_prev_dbg_uid0_show(struct seq_file *s, void *unused)
121{
122 return prev_dbg_uidn_show(s, unused, 0);
123}
124
125GENWQE_DEBUGFS_RO(prev_dbg_uid0, genwqe_prev_dbg_uid0_show);
126
127static int genwqe_prev_dbg_uid1_show(struct seq_file *s, void *unused)
128{
129 return prev_dbg_uidn_show(s, unused, 1);
130}
131
132GENWQE_DEBUGFS_RO(prev_dbg_uid1, genwqe_prev_dbg_uid1_show);
133
134static int genwqe_prev_dbg_uid2_show(struct seq_file *s, void *unused)
135{
136 return prev_dbg_uidn_show(s, unused, 2);
137}
138
139GENWQE_DEBUGFS_RO(prev_dbg_uid2, genwqe_prev_dbg_uid2_show);
140
141static int genwqe_curr_regs_show(struct seq_file *s, void *unused)
142{
143 struct genwqe_dev *cd = s->private;
144 unsigned int i;
145 struct genwqe_reg *regs;
146
147 regs = kcalloc(GENWQE_FFDC_REGS, sizeof(*regs), GFP_KERNEL);
148 if (regs == NULL)
149 return -ENOMEM;
150
151 genwqe_stop_traps(cd);
152 genwqe_read_ffdc_regs(cd, regs, GENWQE_FFDC_REGS, 1);
153 genwqe_start_traps(cd);
154
155 for (i = 0; i < GENWQE_FFDC_REGS; i++) {
156 if (regs[i].addr == 0xffffffff)
157 break; /* invalid entries */
158
159 if (regs[i].val == 0x0ull)
160 continue; /* do not print 0x0 FIRs */
161
162 seq_printf(s, " 0x%08x 0x%016llx\n",
163 regs[i].addr, regs[i].val);
164 }
165 return 0;
166}
167
168GENWQE_DEBUGFS_RO(curr_regs, genwqe_curr_regs_show);
169
170static int genwqe_prev_regs_show(struct seq_file *s, void *unused)
171{
172 struct genwqe_dev *cd = s->private;
173 unsigned int i;
174 struct genwqe_reg *regs = cd->ffdc[GENWQE_DBG_REGS].regs;
175
176 if (regs == NULL)
177 return -EINVAL;
178
179 for (i = 0; i < GENWQE_FFDC_REGS; i++) {
180 if (regs[i].addr == 0xffffffff)
181 break; /* invalid entries */
182
183 if (regs[i].val == 0x0ull)
184 continue; /* do not print 0x0 FIRs */
185
186 seq_printf(s, " 0x%08x 0x%016llx\n",
187 regs[i].addr, regs[i].val);
188 }
189 return 0;
190}
191
192GENWQE_DEBUGFS_RO(prev_regs, genwqe_prev_regs_show);
193
194static int genwqe_jtimer_show(struct seq_file *s, void *unused)
195{
196 struct genwqe_dev *cd = s->private;
197 unsigned int vf_num;
198 u64 jtimer;
199
200 jtimer = genwqe_read_vreg(cd, IO_SLC_VF_APPJOB_TIMEOUT, 0);
201 seq_printf(s, " PF 0x%016llx %d msec\n", jtimer,
202 genwqe_pf_jobtimeout_msec);
203
204 for (vf_num = 0; vf_num < cd->num_vfs; vf_num++) {
205 jtimer = genwqe_read_vreg(cd, IO_SLC_VF_APPJOB_TIMEOUT,
206 vf_num + 1);
207 seq_printf(s, " VF%-2d 0x%016llx %d msec\n", vf_num, jtimer,
208 cd->vf_jobtimeout_msec[vf_num]);
209 }
210 return 0;
211}
212
213GENWQE_DEBUGFS_RO(jtimer, genwqe_jtimer_show);
214
215static int genwqe_queue_working_time_show(struct seq_file *s, void *unused)
216{
217 struct genwqe_dev *cd = s->private;
218 unsigned int vf_num;
219 u64 t;
220
221 t = genwqe_read_vreg(cd, IO_SLC_VF_QUEUE_WTIME, 0);
222 seq_printf(s, " PF 0x%016llx\n", t);
223
224 for (vf_num = 0; vf_num < cd->num_vfs; vf_num++) {
225 t = genwqe_read_vreg(cd, IO_SLC_VF_QUEUE_WTIME, vf_num + 1);
226 seq_printf(s, " VF%-2d 0x%016llx\n", vf_num, t);
227 }
228 return 0;
229}
230
231GENWQE_DEBUGFS_RO(queue_working_time, genwqe_queue_working_time_show);
232
233static int genwqe_ddcb_info_show(struct seq_file *s, void *unused)
234{
235 struct genwqe_dev *cd = s->private;
236 unsigned int i;
237 struct ddcb_queue *queue;
238 struct ddcb *pddcb;
239
240 queue = &cd->queue;
241 seq_puts(s, "DDCB QUEUE:\n");
242 seq_printf(s, " ddcb_max: %d\n"
243 " ddcb_daddr: %016llx - %016llx\n"
244 " ddcb_vaddr: %016llx\n"
245 " ddcbs_in_flight: %u\n"
246 " ddcbs_max_in_flight: %u\n"
247 " ddcbs_completed: %u\n"
248 " busy: %u\n"
249 " irqs_processed: %u\n",
250 queue->ddcb_max, (long long)queue->ddcb_daddr,
251 (long long)queue->ddcb_daddr +
252 (queue->ddcb_max * DDCB_LENGTH),
253 (long long)queue->ddcb_vaddr, queue->ddcbs_in_flight,
254 queue->ddcbs_max_in_flight, queue->ddcbs_completed,
255 queue->busy, cd->irqs_processed);
256
257 /* Hardware State */
258 seq_printf(s, " 0x%08x 0x%016llx IO_QUEUE_CONFIG\n"
259 " 0x%08x 0x%016llx IO_QUEUE_STATUS\n"
260 " 0x%08x 0x%016llx IO_QUEUE_SEGMENT\n"
261 " 0x%08x 0x%016llx IO_QUEUE_INITSQN\n"
262 " 0x%08x 0x%016llx IO_QUEUE_WRAP\n"
263 " 0x%08x 0x%016llx IO_QUEUE_OFFSET\n"
264 " 0x%08x 0x%016llx IO_QUEUE_WTIME\n"
265 " 0x%08x 0x%016llx IO_QUEUE_ERRCNTS\n"
266 " 0x%08x 0x%016llx IO_QUEUE_LRW\n",
267 queue->IO_QUEUE_CONFIG,
268 __genwqe_readq(cd, queue->IO_QUEUE_CONFIG),
269 queue->IO_QUEUE_STATUS,
270 __genwqe_readq(cd, queue->IO_QUEUE_STATUS),
271 queue->IO_QUEUE_SEGMENT,
272 __genwqe_readq(cd, queue->IO_QUEUE_SEGMENT),
273 queue->IO_QUEUE_INITSQN,
274 __genwqe_readq(cd, queue->IO_QUEUE_INITSQN),
275 queue->IO_QUEUE_WRAP,
276 __genwqe_readq(cd, queue->IO_QUEUE_WRAP),
277 queue->IO_QUEUE_OFFSET,
278 __genwqe_readq(cd, queue->IO_QUEUE_OFFSET),
279 queue->IO_QUEUE_WTIME,
280 __genwqe_readq(cd, queue->IO_QUEUE_WTIME),
281 queue->IO_QUEUE_ERRCNTS,
282 __genwqe_readq(cd, queue->IO_QUEUE_ERRCNTS),
283 queue->IO_QUEUE_LRW,
284 __genwqe_readq(cd, queue->IO_QUEUE_LRW));
285
286 seq_printf(s, "DDCB list (ddcb_act=%d/ddcb_next=%d):\n",
287 queue->ddcb_act, queue->ddcb_next);
288
289 pddcb = queue->ddcb_vaddr;
290 for (i = 0; i < queue->ddcb_max; i++) {
291 seq_printf(s, " %-3d: RETC=%03x SEQ=%04x HSI/SHI=%02x/%02x ",
292 i, be16_to_cpu(pddcb->retc_16),
293 be16_to_cpu(pddcb->seqnum_16),
294 pddcb->hsi, pddcb->shi);
295 seq_printf(s, "PRIV=%06llx CMD=%02x\n",
296 be64_to_cpu(pddcb->priv_64), pddcb->cmd);
297 pddcb++;
298 }
299 return 0;
300}
301
302GENWQE_DEBUGFS_RO(ddcb_info, genwqe_ddcb_info_show);
303
304static int genwqe_info_show(struct seq_file *s, void *unused)
305{
306 struct genwqe_dev *cd = s->private;
307 u16 val16, type;
308 u64 app_id, slu_id, bitstream = -1;
309 struct pci_dev *pci_dev = cd->pci_dev;
310
311 slu_id = __genwqe_readq(cd, IO_SLU_UNITCFG);
312 app_id = __genwqe_readq(cd, IO_APP_UNITCFG);
313
314 if (genwqe_is_privileged(cd))
315 bitstream = __genwqe_readq(cd, IO_SLU_BITSTREAM);
316
317 val16 = (u16)(slu_id & 0x0fLLU);
318 type = (u16)((slu_id >> 20) & 0xffLLU);
319
320 seq_printf(s, "%s driver version: %s\n"
321 " Device Name/Type: %s %s CardIdx: %d\n"
322 " SLU/APP Config : 0x%016llx/0x%016llx\n"
323 " Build Date : %u/%x/%u\n"
324 " Base Clock : %u MHz\n"
325 " Arch/SVN Release: %u/%llx\n"
326 " Bitstream : %llx\n",
327 GENWQE_DEVNAME, DRV_VERS_STRING, dev_name(&pci_dev->dev),
328 genwqe_is_privileged(cd) ?
329 "Physical" : "Virtual or no SR-IOV",
330 cd->card_idx, slu_id, app_id,
331 (u16)((slu_id >> 12) & 0x0fLLU), /* month */
332 (u16)((slu_id >> 4) & 0xffLLU), /* day */
333 (u16)((slu_id >> 16) & 0x0fLLU) + 2010, /* year */
334 genwqe_base_clock_frequency(cd),
335 (u16)((slu_id >> 32) & 0xffLLU), slu_id >> 40,
336 bitstream);
337
338 return 0;
339}
340
341GENWQE_DEBUGFS_RO(info, genwqe_info_show);
342
343int genwqe_init_debugfs(struct genwqe_dev *cd)
344{
345 struct dentry *root;
346 struct dentry *file;
347 int ret;
348 char card_name[64];
349 char name[64];
350 unsigned int i;
351
352 sprintf(card_name, "%s%u_card", GENWQE_DEVNAME, cd->card_idx);
353
354 root = debugfs_create_dir(card_name, cd->debugfs_genwqe);
355 if (!root) {
356 ret = -ENOMEM;
357 goto err0;
358 }
359
360 /* non privileged interfaces are done here */
361 file = debugfs_create_file("ddcb_info", S_IRUGO, root, cd,
362 &genwqe_ddcb_info_fops);
363 if (!file) {
364 ret = -ENOMEM;
365 goto err1;
366 }
367
368 file = debugfs_create_file("info", S_IRUGO, root, cd,
369 &genwqe_info_fops);
370 if (!file) {
371 ret = -ENOMEM;
372 goto err1;
373 }
374
375 file = debugfs_create_x64("err_inject", 0666, root, &cd->err_inject);
376 if (!file) {
377 ret = -ENOMEM;
378 goto err1;
379 }
380
381 file = debugfs_create_u32("ddcb_software_timeout", 0666, root,
382 &cd->ddcb_software_timeout);
383 if (!file) {
384 ret = -ENOMEM;
385 goto err1;
386 }
387
388 file = debugfs_create_u32("kill_timeout", 0666, root,
389 &cd->kill_timeout);
390 if (!file) {
391 ret = -ENOMEM;
392 goto err1;
393 }
394
395 /* privileged interfaces follow here */
396 if (!genwqe_is_privileged(cd)) {
397 cd->debugfs_root = root;
398 return 0;
399 }
400
401 file = debugfs_create_file("curr_regs", S_IRUGO, root, cd,
402 &genwqe_curr_regs_fops);
403 if (!file) {
404 ret = -ENOMEM;
405 goto err1;
406 }
407
408 file = debugfs_create_file("curr_dbg_uid0", S_IRUGO, root, cd,
409 &genwqe_curr_dbg_uid0_fops);
410 if (!file) {
411 ret = -ENOMEM;
412 goto err1;
413 }
414
415 file = debugfs_create_file("curr_dbg_uid1", S_IRUGO, root, cd,
416 &genwqe_curr_dbg_uid1_fops);
417 if (!file) {
418 ret = -ENOMEM;
419 goto err1;
420 }
421
422 file = debugfs_create_file("curr_dbg_uid2", S_IRUGO, root, cd,
423 &genwqe_curr_dbg_uid2_fops);
424 if (!file) {
425 ret = -ENOMEM;
426 goto err1;
427 }
428
429 file = debugfs_create_file("prev_regs", S_IRUGO, root, cd,
430 &genwqe_prev_regs_fops);
431 if (!file) {
432 ret = -ENOMEM;
433 goto err1;
434 }
435
436 file = debugfs_create_file("prev_dbg_uid0", S_IRUGO, root, cd,
437 &genwqe_prev_dbg_uid0_fops);
438 if (!file) {
439 ret = -ENOMEM;
440 goto err1;
441 }
442
443 file = debugfs_create_file("prev_dbg_uid1", S_IRUGO, root, cd,
444 &genwqe_prev_dbg_uid1_fops);
445 if (!file) {
446 ret = -ENOMEM;
447 goto err1;
448 }
449
450 file = debugfs_create_file("prev_dbg_uid2", S_IRUGO, root, cd,
451 &genwqe_prev_dbg_uid2_fops);
452 if (!file) {
453 ret = -ENOMEM;
454 goto err1;
455 }
456
457 for (i = 0; i < GENWQE_MAX_VFS; i++) {
458 sprintf(name, "vf%d_jobtimeout_msec", i);
459
460 file = debugfs_create_u32(name, 0666, root,
461 &cd->vf_jobtimeout_msec[i]);
462 if (!file) {
463 ret = -ENOMEM;
464 goto err1;
465 }
466 }
467
468 file = debugfs_create_file("jobtimer", S_IRUGO, root, cd,
469 &genwqe_jtimer_fops);
470 if (!file) {
471 ret = -ENOMEM;
472 goto err1;
473 }
474
475 file = debugfs_create_file("queue_working_time", S_IRUGO, root, cd,
476 &genwqe_queue_working_time_fops);
477 if (!file) {
478 ret = -ENOMEM;
479 goto err1;
480 }
481
482 file = debugfs_create_u32("skip_recovery", 0666, root,
483 &cd->skip_recovery);
484 if (!file) {
485 ret = -ENOMEM;
486 goto err1;
487 }
488
489 cd->debugfs_root = root;
490 return 0;
491err1:
492 debugfs_remove_recursive(root);
493err0:
494 return ret;
495}
496
497void genqwe_exit_debugfs(struct genwqe_dev *cd)
498{
499 debugfs_remove_recursive(cd->debugfs_root);
500}
generated by cgit v1.2.2 (git 2.25.0) at 2026-05-14 08:41:22 -0400