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
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* IBM Accelerator Family 'GenWQE'
*
* (C) Copyright IBM Corp. 2013
*
* Author: Frank Haverkamp <haver@linux.vnet.ibm.com>
* Author: Joerg-Stephan Vogt <jsvogt@de.ibm.com>
* Author: Michael Jung <mijung@gmx.net>
* Author: Michael Ruettger <michael@ibmra.de>
*/
/*
* Debugfs interfaces for the GenWQE card. Help to debug potential
* problems. Dump internal chip state for debugging and failure
* determination.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include "card_base.h"
#include "card_ddcb.h"
static void dbg_uidn_show(struct seq_file *s, struct genwqe_reg *regs,
int entries)
{
unsigned int i;
u32 v_hi, v_lo;
for (i = 0; i < entries; i++) {
v_hi = (regs[i].val >> 32) & 0xffffffff;
v_lo = (regs[i].val) & 0xffffffff;
seq_printf(s, " 0x%08x 0x%08x 0x%08x 0x%08x EXT_ERR_REC\n",
regs[i].addr, regs[i].idx, v_hi, v_lo);
}
}
static int curr_dbg_uidn_show(struct seq_file *s, void *unused, int uid)
{
struct genwqe_dev *cd = s->private;
int entries;
struct genwqe_reg *regs;
entries = genwqe_ffdc_buff_size(cd, uid);
if (entries < 0)
return -EINVAL;
if (entries == 0)
return 0;
regs = kcalloc(entries, sizeof(*regs), GFP_KERNEL);
if (regs == NULL)
return -ENOMEM;
genwqe_stop_traps(cd); /* halt the traps while dumping data */
genwqe_ffdc_buff_read(cd, uid, regs, entries);
genwqe_start_traps(cd);
dbg_uidn_show(s, regs, entries);
kfree(regs);
return 0;
}
static int curr_dbg_uid0_show(struct seq_file *s, void *unused)
{
return curr_dbg_uidn_show(s, unused, 0);
}
DEFINE_SHOW_ATTRIBUTE(curr_dbg_uid0);
static int curr_dbg_uid1_show(struct seq_file *s, void *unused)
{
return curr_dbg_uidn_show(s, unused, 1);
}
DEFINE_SHOW_ATTRIBUTE(curr_dbg_uid1);
static int curr_dbg_uid2_show(struct seq_file *s, void *unused)
{
return curr_dbg_uidn_show(s, unused, 2);
}
DEFINE_SHOW_ATTRIBUTE(curr_dbg_uid2);
static int prev_dbg_uidn_show(struct seq_file *s, void *unused, int uid)
{
struct genwqe_dev *cd = s->private;
dbg_uidn_show(s, cd->ffdc[uid].regs, cd->ffdc[uid].entries);
return 0;
}
static int prev_dbg_uid0_show(struct seq_file *s, void *unused)
{
return prev_dbg_uidn_show(s, unused, 0);
}
DEFINE_SHOW_ATTRIBUTE(prev_dbg_uid0);
static int prev_dbg_uid1_show(struct seq_file *s, void *unused)
{
return prev_dbg_uidn_show(s, unused, 1);
}
DEFINE_SHOW_ATTRIBUTE(prev_dbg_uid1);
static int prev_dbg_uid2_show(struct seq_file *s, void *unused)
{
return prev_dbg_uidn_show(s, unused, 2);
}
DEFINE_SHOW_ATTRIBUTE(prev_dbg_uid2);
static int curr_regs_show(struct seq_file *s, void *unused)
{
struct genwqe_dev *cd = s->private;
unsigned int i;
struct genwqe_reg *regs;
regs = kcalloc(GENWQE_FFDC_REGS, sizeof(*regs), GFP_KERNEL);
if (regs == NULL)
return -ENOMEM;
genwqe_stop_traps(cd);
genwqe_read_ffdc_regs(cd, regs, GENWQE_FFDC_REGS, 1);
genwqe_start_traps(cd);
for (i = 0; i < GENWQE_FFDC_REGS; i++) {
if (regs[i].addr == 0xffffffff)
break; /* invalid entries */
if (regs[i].val == 0x0ull)
continue; /* do not print 0x0 FIRs */
seq_printf(s, " 0x%08x 0x%016llx\n",
regs[i].addr, regs[i].val);
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(curr_regs);
static int prev_regs_show(struct seq_file *s, void *unused)
{
struct genwqe_dev *cd = s->private;
unsigned int i;
struct genwqe_reg *regs = cd->ffdc[GENWQE_DBG_REGS].regs;
if (regs == NULL)
return -EINVAL;
for (i = 0; i < GENWQE_FFDC_REGS; i++) {
if (regs[i].addr == 0xffffffff)
break; /* invalid entries */
if (regs[i].val == 0x0ull)
continue; /* do not print 0x0 FIRs */
seq_printf(s, " 0x%08x 0x%016llx\n",
regs[i].addr, regs[i].val);
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(prev_regs);
static int jtimer_show(struct seq_file *s, void *unused)
{
struct genwqe_dev *cd = s->private;
unsigned int vf_num;
u64 jtimer;
jtimer = genwqe_read_vreg(cd, IO_SLC_VF_APPJOB_TIMEOUT, 0);
seq_printf(s, " PF 0x%016llx %d msec\n", jtimer,
GENWQE_PF_JOBTIMEOUT_MSEC);
for (vf_num = 0; vf_num < cd->num_vfs; vf_num++) {
jtimer = genwqe_read_vreg(cd, IO_SLC_VF_APPJOB_TIMEOUT,
vf_num + 1);
seq_printf(s, " VF%-2d 0x%016llx %d msec\n", vf_num, jtimer,
cd->vf_jobtimeout_msec[vf_num]);
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(jtimer);
static int queue_working_time_show(struct seq_file *s, void *unused)
{
struct genwqe_dev *cd = s->private;
unsigned int vf_num;
u64 t;
t = genwqe_read_vreg(cd, IO_SLC_VF_QUEUE_WTIME, 0);
seq_printf(s, " PF 0x%016llx\n", t);
for (vf_num = 0; vf_num < cd->num_vfs; vf_num++) {
t = genwqe_read_vreg(cd, IO_SLC_VF_QUEUE_WTIME, vf_num + 1);
seq_printf(s, " VF%-2d 0x%016llx\n", vf_num, t);
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(queue_working_time);
static int ddcb_info_show(struct seq_file *s, void *unused)
{
struct genwqe_dev *cd = s->private;
unsigned int i;
struct ddcb_queue *queue;
struct ddcb *pddcb;
queue = &cd->queue;
seq_puts(s, "DDCB QUEUE:\n");
seq_printf(s, " ddcb_max: %d\n"
" ddcb_daddr: %016llx - %016llx\n"
" ddcb_vaddr: %p\n"
" ddcbs_in_flight: %u\n"
" ddcbs_max_in_flight: %u\n"
" ddcbs_completed: %u\n"
" return_on_busy: %u\n"
" wait_on_busy: %u\n"
" irqs_processed: %u\n",
queue->ddcb_max, (long long)queue->ddcb_daddr,
(long long)queue->ddcb_daddr +
(queue->ddcb_max * DDCB_LENGTH),
queue->ddcb_vaddr, queue->ddcbs_in_flight,
queue->ddcbs_max_in_flight, queue->ddcbs_completed,
queue->return_on_busy, queue->wait_on_busy,
cd->irqs_processed);
/* Hardware State */
seq_printf(s, " 0x%08x 0x%016llx IO_QUEUE_CONFIG\n"
" 0x%08x 0x%016llx IO_QUEUE_STATUS\n"
" 0x%08x 0x%016llx IO_QUEUE_SEGMENT\n"
" 0x%08x 0x%016llx IO_QUEUE_INITSQN\n"
" 0x%08x 0x%016llx IO_QUEUE_WRAP\n"
" 0x%08x 0x%016llx IO_QUEUE_OFFSET\n"
" 0x%08x 0x%016llx IO_QUEUE_WTIME\n"
" 0x%08x 0x%016llx IO_QUEUE_ERRCNTS\n"
" 0x%08x 0x%016llx IO_QUEUE_LRW\n",
queue->IO_QUEUE_CONFIG,
__genwqe_readq(cd, queue->IO_QUEUE_CONFIG),
queue->IO_QUEUE_STATUS,
__genwqe_readq(cd, queue->IO_QUEUE_STATUS),
queue->IO_QUEUE_SEGMENT,
__genwqe_readq(cd, queue->IO_QUEUE_SEGMENT),
queue->IO_QUEUE_INITSQN,
__genwqe_readq(cd, queue->IO_QUEUE_INITSQN),
queue->IO_QUEUE_WRAP,
__genwqe_readq(cd, queue->IO_QUEUE_WRAP),
queue->IO_QUEUE_OFFSET,
__genwqe_readq(cd, queue->IO_QUEUE_OFFSET),
queue->IO_QUEUE_WTIME,
__genwqe_readq(cd, queue->IO_QUEUE_WTIME),
queue->IO_QUEUE_ERRCNTS,
__genwqe_readq(cd, queue->IO_QUEUE_ERRCNTS),
queue->IO_QUEUE_LRW,
__genwqe_readq(cd, queue->IO_QUEUE_LRW));
seq_printf(s, "DDCB list (ddcb_act=%d/ddcb_next=%d):\n",
queue->ddcb_act, queue->ddcb_next);
pddcb = queue->ddcb_vaddr;
for (i = 0; i < queue->ddcb_max; i++) {
seq_printf(s, " %-3d: RETC=%03x SEQ=%04x HSI/SHI=%02x/%02x ",
i, be16_to_cpu(pddcb->retc_16),
be16_to_cpu(pddcb->seqnum_16),
pddcb->hsi, pddcb->shi);
seq_printf(s, "PRIV=%06llx CMD=%02x\n",
be64_to_cpu(pddcb->priv_64), pddcb->cmd);
pddcb++;
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ddcb_info);
static int info_show(struct seq_file *s, void *unused)
{
struct genwqe_dev *cd = s->private;
u64 app_id, slu_id, bitstream = -1;
struct pci_dev *pci_dev = cd->pci_dev;
slu_id = __genwqe_readq(cd, IO_SLU_UNITCFG);
app_id = __genwqe_readq(cd, IO_APP_UNITCFG);
if (genwqe_is_privileged(cd))
bitstream = __genwqe_readq(cd, IO_SLU_BITSTREAM);
seq_printf(s, "%s driver version: %s\n"
" Device Name/Type: %s %s CardIdx: %d\n"
" SLU/APP Config : 0x%016llx/0x%016llx\n"
" Build Date : %u/%x/%u\n"
" Base Clock : %u MHz\n"
" Arch/SVN Release: %u/%llx\n"
" Bitstream : %llx\n",
GENWQE_DEVNAME, DRV_VERSION, dev_name(&pci_dev->dev),
genwqe_is_privileged(cd) ?
"Physical" : "Virtual or no SR-IOV",
cd->card_idx, slu_id, app_id,
(u16)((slu_id >> 12) & 0x0fLLU), /* month */
(u16)((slu_id >> 4) & 0xffLLU), /* day */
(u16)((slu_id >> 16) & 0x0fLLU) + 2010, /* year */
genwqe_base_clock_frequency(cd),
(u16)((slu_id >> 32) & 0xffLLU), slu_id >> 40,
bitstream);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(info);
void genwqe_init_debugfs(struct genwqe_dev *cd)
{
struct dentry *root;
char card_name[64];
char name[64];
unsigned int i;
sprintf(card_name, "%s%d_card", GENWQE_DEVNAME, cd->card_idx);
root = debugfs_create_dir(card_name, cd->debugfs_genwqe);
/* non privileged interfaces are done here */
debugfs_create_file("ddcb_info", S_IRUGO, root, cd, &ddcb_info_fops);
debugfs_create_file("info", S_IRUGO, root, cd, &info_fops);
debugfs_create_x64("err_inject", 0666, root, &cd->err_inject);
debugfs_create_u32("ddcb_software_timeout", 0666, root,
&cd->ddcb_software_timeout);
debugfs_create_u32("kill_timeout", 0666, root, &cd->kill_timeout);
/* privileged interfaces follow here */
if (!genwqe_is_privileged(cd)) {
cd->debugfs_root = root;
return;
}
debugfs_create_file("curr_regs", S_IRUGO, root, cd, &curr_regs_fops);
debugfs_create_file("curr_dbg_uid0", S_IRUGO, root, cd,
&curr_dbg_uid0_fops);
debugfs_create_file("curr_dbg_uid1", S_IRUGO, root, cd,
&curr_dbg_uid1_fops);
debugfs_create_file("curr_dbg_uid2", S_IRUGO, root, cd,
&curr_dbg_uid2_fops);
debugfs_create_file("prev_regs", S_IRUGO, root, cd, &prev_regs_fops);
debugfs_create_file("prev_dbg_uid0", S_IRUGO, root, cd,
&prev_dbg_uid0_fops);
debugfs_create_file("prev_dbg_uid1", S_IRUGO, root, cd,
&prev_dbg_uid1_fops);
debugfs_create_file("prev_dbg_uid2", S_IRUGO, root, cd,
&prev_dbg_uid2_fops);
for (i = 0; i < GENWQE_MAX_VFS; i++) {
sprintf(name, "vf%u_jobtimeout_msec", i);
debugfs_create_u32(name, 0666, root,
&cd->vf_jobtimeout_msec[i]);
}
debugfs_create_file("jobtimer", S_IRUGO, root, cd, &jtimer_fops);
debugfs_create_file("queue_working_time", S_IRUGO, root, cd,
&queue_working_time_fops);
debugfs_create_u32("skip_recovery", 0666, root, &cd->skip_recovery);
debugfs_create_u32("use_platform_recovery", 0666, root,
&cd->use_platform_recovery);
cd->debugfs_root = root;
}
void genqwe_exit_debugfs(struct genwqe_dev *cd)
{
debugfs_remove_recursive(cd->debugfs_root);
}
|
