1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright IBM Corp. 2001, 2009
4 * Author(s): Ulrich Weigand <Ulrich.Weigand@de.ibm.com>,
5 * Martin Schwidefsky <schwidefsky@de.ibm.com>,
6 */
7
8 #include <linux/debugfs.h>
9 #include <linux/kernel.h>
10 #include <linux/mm.h>
11 #include <linux/proc_fs.h>
12 #include <linux/seq_file.h>
13 #include <linux/init.h>
14 #include <linux/delay.h>
15 #include <linux/export.h>
16 #include <linux/slab.h>
17 #include <asm/ebcdic.h>
18 #include <asm/debug.h>
19 #include <asm/sysinfo.h>
20 #include <asm/cpcmd.h>
21 #include <asm/topology.h>
22 #include <asm/fpu/api.h>
23
24 int topology_max_mnest;
25
__stsi(void * sysinfo,int fc,int sel1,int sel2,int * lvl)26 static inline int __stsi(void *sysinfo, int fc, int sel1, int sel2, int *lvl)
27 {
28 register int r0 asm("0") = (fc << 28) | sel1;
29 register int r1 asm("1") = sel2;
30 int rc = 0;
31
32 asm volatile(
33 " stsi 0(%3)\n"
34 "0: jz 2f\n"
35 "1: lhi %1,%4\n"
36 "2:\n"
37 EX_TABLE(0b, 1b)
38 : "+d" (r0), "+d" (rc)
39 : "d" (r1), "a" (sysinfo), "K" (-EOPNOTSUPP)
40 : "cc", "memory");
41 *lvl = ((unsigned int) r0) >> 28;
42 return rc;
43 }
44
45 /*
46 * stsi - store system information
47 *
48 * Returns the current configuration level if function code 0 was specified.
49 * Otherwise returns 0 on success or a negative value on error.
50 */
stsi(void * sysinfo,int fc,int sel1,int sel2)51 int stsi(void *sysinfo, int fc, int sel1, int sel2)
52 {
53 int lvl, rc;
54
55 rc = __stsi(sysinfo, fc, sel1, sel2, &lvl);
56 if (rc)
57 return rc;
58 return fc ? 0 : lvl;
59 }
60 EXPORT_SYMBOL(stsi);
61
62 #ifdef CONFIG_PROC_FS
63
convert_ext_name(unsigned char encoding,char * name,size_t len)64 static bool convert_ext_name(unsigned char encoding, char *name, size_t len)
65 {
66 switch (encoding) {
67 case 1: /* EBCDIC */
68 EBCASC(name, len);
69 break;
70 case 2: /* UTF-8 */
71 break;
72 default:
73 return false;
74 }
75 return true;
76 }
77
stsi_1_1_1(struct seq_file * m,struct sysinfo_1_1_1 * info)78 static void stsi_1_1_1(struct seq_file *m, struct sysinfo_1_1_1 *info)
79 {
80 int i;
81
82 if (stsi(info, 1, 1, 1))
83 return;
84 EBCASC(info->manufacturer, sizeof(info->manufacturer));
85 EBCASC(info->type, sizeof(info->type));
86 EBCASC(info->model, sizeof(info->model));
87 EBCASC(info->sequence, sizeof(info->sequence));
88 EBCASC(info->plant, sizeof(info->plant));
89 EBCASC(info->model_capacity, sizeof(info->model_capacity));
90 EBCASC(info->model_perm_cap, sizeof(info->model_perm_cap));
91 EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap));
92 seq_printf(m, "Manufacturer: %-16.16s\n", info->manufacturer);
93 seq_printf(m, "Type: %-4.4s\n", info->type);
94 /*
95 * Sigh: the model field has been renamed with System z9
96 * to model_capacity and a new model field has been added
97 * after the plant field. To avoid confusing older programs
98 * the "Model:" prints "model_capacity model" or just
99 * "model_capacity" if the model string is empty .
100 */
101 seq_printf(m, "Model: %-16.16s", info->model_capacity);
102 if (info->model[0] != '\0')
103 seq_printf(m, " %-16.16s", info->model);
104 seq_putc(m, '\n');
105 seq_printf(m, "Sequence Code: %-16.16s\n", info->sequence);
106 seq_printf(m, "Plant: %-4.4s\n", info->plant);
107 seq_printf(m, "Model Capacity: %-16.16s %08u\n",
108 info->model_capacity, info->model_cap_rating);
109 if (info->model_perm_cap_rating)
110 seq_printf(m, "Model Perm. Capacity: %-16.16s %08u\n",
111 info->model_perm_cap,
112 info->model_perm_cap_rating);
113 if (info->model_temp_cap_rating)
114 seq_printf(m, "Model Temp. Capacity: %-16.16s %08u\n",
115 info->model_temp_cap,
116 info->model_temp_cap_rating);
117 if (info->ncr)
118 seq_printf(m, "Nominal Cap. Rating: %08u\n", info->ncr);
119 if (info->npr)
120 seq_printf(m, "Nominal Perm. Rating: %08u\n", info->npr);
121 if (info->ntr)
122 seq_printf(m, "Nominal Temp. Rating: %08u\n", info->ntr);
123 if (info->cai) {
124 seq_printf(m, "Capacity Adj. Ind.: %d\n", info->cai);
125 seq_printf(m, "Capacity Ch. Reason: %d\n", info->ccr);
126 seq_printf(m, "Capacity Transient: %d\n", info->t);
127 }
128 if (info->p) {
129 for (i = 1; i <= ARRAY_SIZE(info->typepct); i++) {
130 seq_printf(m, "Type %d Percentage: %d\n",
131 i, info->typepct[i - 1]);
132 }
133 }
134 }
135
stsi_15_1_x(struct seq_file * m,struct sysinfo_15_1_x * info)136 static void stsi_15_1_x(struct seq_file *m, struct sysinfo_15_1_x *info)
137 {
138 int i;
139
140 seq_putc(m, '\n');
141 if (!MACHINE_HAS_TOPOLOGY)
142 return;
143 if (stsi(info, 15, 1, topology_max_mnest))
144 return;
145 seq_printf(m, "CPU Topology HW: ");
146 for (i = 0; i < TOPOLOGY_NR_MAG; i++)
147 seq_printf(m, " %d", info->mag[i]);
148 seq_putc(m, '\n');
149 #ifdef CONFIG_SCHED_TOPOLOGY
150 store_topology(info);
151 seq_printf(m, "CPU Topology SW: ");
152 for (i = 0; i < TOPOLOGY_NR_MAG; i++)
153 seq_printf(m, " %d", info->mag[i]);
154 seq_putc(m, '\n');
155 #endif
156 }
157
stsi_1_2_2(struct seq_file * m,struct sysinfo_1_2_2 * info)158 static void stsi_1_2_2(struct seq_file *m, struct sysinfo_1_2_2 *info)
159 {
160 struct sysinfo_1_2_2_extension *ext;
161 int i;
162
163 if (stsi(info, 1, 2, 2))
164 return;
165 ext = (struct sysinfo_1_2_2_extension *)
166 ((unsigned long) info + info->acc_offset);
167 seq_printf(m, "CPUs Total: %d\n", info->cpus_total);
168 seq_printf(m, "CPUs Configured: %d\n", info->cpus_configured);
169 seq_printf(m, "CPUs Standby: %d\n", info->cpus_standby);
170 seq_printf(m, "CPUs Reserved: %d\n", info->cpus_reserved);
171 if (info->mt_installed) {
172 seq_printf(m, "CPUs G-MTID: %d\n", info->mt_gtid);
173 seq_printf(m, "CPUs S-MTID: %d\n", info->mt_stid);
174 }
175 /*
176 * Sigh 2. According to the specification the alternate
177 * capability field is a 32 bit floating point number
178 * if the higher order 8 bits are not zero. Printing
179 * a floating point number in the kernel is a no-no,
180 * always print the number as 32 bit unsigned integer.
181 * The user-space needs to know about the strange
182 * encoding of the alternate cpu capability.
183 */
184 seq_printf(m, "Capability: %u", info->capability);
185 if (info->format == 1)
186 seq_printf(m, " %u", ext->alt_capability);
187 seq_putc(m, '\n');
188 if (info->nominal_cap)
189 seq_printf(m, "Nominal Capability: %d\n", info->nominal_cap);
190 if (info->secondary_cap)
191 seq_printf(m, "Secondary Capability: %d\n", info->secondary_cap);
192 for (i = 2; i <= info->cpus_total; i++) {
193 seq_printf(m, "Adjustment %02d-way: %u",
194 i, info->adjustment[i-2]);
195 if (info->format == 1)
196 seq_printf(m, " %u", ext->alt_adjustment[i-2]);
197 seq_putc(m, '\n');
198 }
199 }
200
stsi_2_2_2(struct seq_file * m,struct sysinfo_2_2_2 * info)201 static void stsi_2_2_2(struct seq_file *m, struct sysinfo_2_2_2 *info)
202 {
203 if (stsi(info, 2, 2, 2))
204 return;
205 EBCASC(info->name, sizeof(info->name));
206 seq_putc(m, '\n');
207 seq_printf(m, "LPAR Number: %d\n", info->lpar_number);
208 seq_printf(m, "LPAR Characteristics: ");
209 if (info->characteristics & LPAR_CHAR_DEDICATED)
210 seq_printf(m, "Dedicated ");
211 if (info->characteristics & LPAR_CHAR_SHARED)
212 seq_printf(m, "Shared ");
213 if (info->characteristics & LPAR_CHAR_LIMITED)
214 seq_printf(m, "Limited ");
215 seq_putc(m, '\n');
216 seq_printf(m, "LPAR Name: %-8.8s\n", info->name);
217 seq_printf(m, "LPAR Adjustment: %d\n", info->caf);
218 seq_printf(m, "LPAR CPUs Total: %d\n", info->cpus_total);
219 seq_printf(m, "LPAR CPUs Configured: %d\n", info->cpus_configured);
220 seq_printf(m, "LPAR CPUs Standby: %d\n", info->cpus_standby);
221 seq_printf(m, "LPAR CPUs Reserved: %d\n", info->cpus_reserved);
222 seq_printf(m, "LPAR CPUs Dedicated: %d\n", info->cpus_dedicated);
223 seq_printf(m, "LPAR CPUs Shared: %d\n", info->cpus_shared);
224 if (info->mt_installed) {
225 seq_printf(m, "LPAR CPUs G-MTID: %d\n", info->mt_gtid);
226 seq_printf(m, "LPAR CPUs S-MTID: %d\n", info->mt_stid);
227 seq_printf(m, "LPAR CPUs PS-MTID: %d\n", info->mt_psmtid);
228 }
229 if (convert_ext_name(info->vsne, info->ext_name, sizeof(info->ext_name))) {
230 seq_printf(m, "LPAR Extended Name: %-.256s\n", info->ext_name);
231 seq_printf(m, "LPAR UUID: %pUb\n", &info->uuid);
232 }
233 }
234
print_ext_name(struct seq_file * m,int lvl,struct sysinfo_3_2_2 * info)235 static void print_ext_name(struct seq_file *m, int lvl,
236 struct sysinfo_3_2_2 *info)
237 {
238 size_t len = sizeof(info->ext_names[lvl]);
239
240 if (!convert_ext_name(info->vm[lvl].evmne, info->ext_names[lvl], len))
241 return;
242 seq_printf(m, "VM%02d Extended Name: %-.256s\n", lvl,
243 info->ext_names[lvl]);
244 }
245
print_uuid(struct seq_file * m,int i,struct sysinfo_3_2_2 * info)246 static void print_uuid(struct seq_file *m, int i, struct sysinfo_3_2_2 *info)
247 {
248 if (uuid_is_null(&info->vm[i].uuid))
249 return;
250 seq_printf(m, "VM%02d UUID: %pUb\n", i, &info->vm[i].uuid);
251 }
252
stsi_3_2_2(struct seq_file * m,struct sysinfo_3_2_2 * info)253 static void stsi_3_2_2(struct seq_file *m, struct sysinfo_3_2_2 *info)
254 {
255 int i;
256
257 if (stsi(info, 3, 2, 2))
258 return;
259 for (i = 0; i < info->count; i++) {
260 EBCASC(info->vm[i].name, sizeof(info->vm[i].name));
261 EBCASC(info->vm[i].cpi, sizeof(info->vm[i].cpi));
262 seq_putc(m, '\n');
263 seq_printf(m, "VM%02d Name: %-8.8s\n", i, info->vm[i].name);
264 seq_printf(m, "VM%02d Control Program: %-16.16s\n", i, info->vm[i].cpi);
265 seq_printf(m, "VM%02d Adjustment: %d\n", i, info->vm[i].caf);
266 seq_printf(m, "VM%02d CPUs Total: %d\n", i, info->vm[i].cpus_total);
267 seq_printf(m, "VM%02d CPUs Configured: %d\n", i, info->vm[i].cpus_configured);
268 seq_printf(m, "VM%02d CPUs Standby: %d\n", i, info->vm[i].cpus_standby);
269 seq_printf(m, "VM%02d CPUs Reserved: %d\n", i, info->vm[i].cpus_reserved);
270 print_ext_name(m, i, info);
271 print_uuid(m, i, info);
272 }
273 }
274
sysinfo_show(struct seq_file * m,void * v)275 static int sysinfo_show(struct seq_file *m, void *v)
276 {
277 void *info = (void *)get_zeroed_page(GFP_KERNEL);
278 int level;
279
280 if (!info)
281 return 0;
282 level = stsi(NULL, 0, 0, 0);
283 if (level >= 1)
284 stsi_1_1_1(m, info);
285 if (level >= 1)
286 stsi_15_1_x(m, info);
287 if (level >= 1)
288 stsi_1_2_2(m, info);
289 if (level >= 2)
290 stsi_2_2_2(m, info);
291 if (level >= 3)
292 stsi_3_2_2(m, info);
293 free_page((unsigned long)info);
294 return 0;
295 }
296
sysinfo_open(struct inode * inode,struct file * file)297 static int sysinfo_open(struct inode *inode, struct file *file)
298 {
299 return single_open(file, sysinfo_show, NULL);
300 }
301
302 static const struct file_operations sysinfo_fops = {
303 .open = sysinfo_open,
304 .read = seq_read,
305 .llseek = seq_lseek,
306 .release = single_release,
307 };
308
sysinfo_create_proc(void)309 static int __init sysinfo_create_proc(void)
310 {
311 proc_create("sysinfo", 0444, NULL, &sysinfo_fops);
312 return 0;
313 }
314 device_initcall(sysinfo_create_proc);
315
316 #endif /* CONFIG_PROC_FS */
317
318 /*
319 * Service levels interface.
320 */
321
322 static DECLARE_RWSEM(service_level_sem);
323 static LIST_HEAD(service_level_list);
324
register_service_level(struct service_level * slr)325 int register_service_level(struct service_level *slr)
326 {
327 struct service_level *ptr;
328
329 down_write(&service_level_sem);
330 list_for_each_entry(ptr, &service_level_list, list)
331 if (ptr == slr) {
332 up_write(&service_level_sem);
333 return -EEXIST;
334 }
335 list_add_tail(&slr->list, &service_level_list);
336 up_write(&service_level_sem);
337 return 0;
338 }
339 EXPORT_SYMBOL(register_service_level);
340
unregister_service_level(struct service_level * slr)341 int unregister_service_level(struct service_level *slr)
342 {
343 struct service_level *ptr, *next;
344 int rc = -ENOENT;
345
346 down_write(&service_level_sem);
347 list_for_each_entry_safe(ptr, next, &service_level_list, list) {
348 if (ptr != slr)
349 continue;
350 list_del(&ptr->list);
351 rc = 0;
352 break;
353 }
354 up_write(&service_level_sem);
355 return rc;
356 }
357 EXPORT_SYMBOL(unregister_service_level);
358
service_level_start(struct seq_file * m,loff_t * pos)359 static void *service_level_start(struct seq_file *m, loff_t *pos)
360 {
361 down_read(&service_level_sem);
362 return seq_list_start(&service_level_list, *pos);
363 }
364
service_level_next(struct seq_file * m,void * p,loff_t * pos)365 static void *service_level_next(struct seq_file *m, void *p, loff_t *pos)
366 {
367 return seq_list_next(p, &service_level_list, pos);
368 }
369
service_level_stop(struct seq_file * m,void * p)370 static void service_level_stop(struct seq_file *m, void *p)
371 {
372 up_read(&service_level_sem);
373 }
374
service_level_show(struct seq_file * m,void * p)375 static int service_level_show(struct seq_file *m, void *p)
376 {
377 struct service_level *slr;
378
379 slr = list_entry(p, struct service_level, list);
380 slr->seq_print(m, slr);
381 return 0;
382 }
383
384 static const struct seq_operations service_level_seq_ops = {
385 .start = service_level_start,
386 .next = service_level_next,
387 .stop = service_level_stop,
388 .show = service_level_show
389 };
390
service_level_open(struct inode * inode,struct file * file)391 static int service_level_open(struct inode *inode, struct file *file)
392 {
393 return seq_open(file, &service_level_seq_ops);
394 }
395
396 static const struct file_operations service_level_ops = {
397 .open = service_level_open,
398 .read = seq_read,
399 .llseek = seq_lseek,
400 .release = seq_release
401 };
402
service_level_vm_print(struct seq_file * m,struct service_level * slr)403 static void service_level_vm_print(struct seq_file *m,
404 struct service_level *slr)
405 {
406 char *query_buffer, *str;
407
408 query_buffer = kmalloc(1024, GFP_KERNEL | GFP_DMA);
409 if (!query_buffer)
410 return;
411 cpcmd("QUERY CPLEVEL", query_buffer, 1024, NULL);
412 str = strchr(query_buffer, '\n');
413 if (str)
414 *str = 0;
415 seq_printf(m, "VM: %s\n", query_buffer);
416 kfree(query_buffer);
417 }
418
419 static struct service_level service_level_vm = {
420 .seq_print = service_level_vm_print
421 };
422
create_proc_service_level(void)423 static __init int create_proc_service_level(void)
424 {
425 proc_create("service_levels", 0, NULL, &service_level_ops);
426 if (MACHINE_IS_VM)
427 register_service_level(&service_level_vm);
428 return 0;
429 }
430 subsys_initcall(create_proc_service_level);
431
432 /*
433 * CPU capability might have changed. Therefore recalculate loops_per_jiffy.
434 */
s390_adjust_jiffies(void)435 void s390_adjust_jiffies(void)
436 {
437 struct sysinfo_1_2_2 *info;
438 unsigned long capability;
439 struct kernel_fpu fpu;
440
441 info = (void *) get_zeroed_page(GFP_KERNEL);
442 if (!info)
443 return;
444
445 if (stsi(info, 1, 2, 2) == 0) {
446 /*
447 * Major sigh. The cpu capability encoding is "special".
448 * If the first 9 bits of info->capability are 0 then it
449 * is a 32 bit unsigned integer in the range 0 .. 2^23.
450 * If the first 9 bits are != 0 then it is a 32 bit float.
451 * In addition a lower value indicates a proportionally
452 * higher cpu capacity. Bogomips are the other way round.
453 * To get to a halfway suitable number we divide 1e7
454 * by the cpu capability number. Yes, that means a floating
455 * point division ..
456 */
457 kernel_fpu_begin(&fpu, KERNEL_FPR);
458 asm volatile(
459 " sfpc %3\n"
460 " l %0,%1\n"
461 " tmlh %0,0xff80\n"
462 " jnz 0f\n"
463 " cefbr %%f2,%0\n"
464 " j 1f\n"
465 "0: le %%f2,%1\n"
466 "1: cefbr %%f0,%2\n"
467 " debr %%f0,%%f2\n"
468 " cgebr %0,5,%%f0\n"
469 : "=&d" (capability)
470 : "Q" (info->capability), "d" (10000000), "d" (0)
471 : "cc"
472 );
473 kernel_fpu_end(&fpu, KERNEL_FPR);
474 } else
475 /*
476 * Really old machine without stsi block for basic
477 * cpu information. Report 42.0 bogomips.
478 */
479 capability = 42;
480 loops_per_jiffy = capability * (500000/HZ);
481 free_page((unsigned long) info);
482 }
483
484 /*
485 * calibrate the delay loop
486 */
calibrate_delay(void)487 void calibrate_delay(void)
488 {
489 s390_adjust_jiffies();
490 /* Print the good old Bogomips line .. */
491 printk(KERN_DEBUG "Calibrating delay loop (skipped)... "
492 "%lu.%02lu BogoMIPS preset\n", loops_per_jiffy/(500000/HZ),
493 (loops_per_jiffy/(5000/HZ)) % 100);
494 }
495
496 #ifdef CONFIG_DEBUG_FS
497
498 #define STSI_FILE(fc, s1, s2) \
499 static int stsi_open_##fc##_##s1##_##s2(struct inode *inode, struct file *file)\
500 { \
501 file->private_data = (void *) get_zeroed_page(GFP_KERNEL); \
502 if (!file->private_data) \
503 return -ENOMEM; \
504 if (stsi(file->private_data, fc, s1, s2)) { \
505 free_page((unsigned long)file->private_data); \
506 file->private_data = NULL; \
507 return -EACCES; \
508 } \
509 return nonseekable_open(inode, file); \
510 } \
511 \
512 static const struct file_operations stsi_##fc##_##s1##_##s2##_fs_ops = { \
513 .open = stsi_open_##fc##_##s1##_##s2, \
514 .release = stsi_release, \
515 .read = stsi_read, \
516 .llseek = no_llseek, \
517 };
518
stsi_release(struct inode * inode,struct file * file)519 static int stsi_release(struct inode *inode, struct file *file)
520 {
521 free_page((unsigned long)file->private_data);
522 return 0;
523 }
524
stsi_read(struct file * file,char __user * buf,size_t size,loff_t * ppos)525 static ssize_t stsi_read(struct file *file, char __user *buf, size_t size, loff_t *ppos)
526 {
527 return simple_read_from_buffer(buf, size, ppos, file->private_data, PAGE_SIZE);
528 }
529
530 STSI_FILE( 1, 1, 1);
531 STSI_FILE( 1, 2, 1);
532 STSI_FILE( 1, 2, 2);
533 STSI_FILE( 2, 2, 1);
534 STSI_FILE( 2, 2, 2);
535 STSI_FILE( 3, 2, 2);
536 STSI_FILE(15, 1, 2);
537 STSI_FILE(15, 1, 3);
538 STSI_FILE(15, 1, 4);
539 STSI_FILE(15, 1, 5);
540 STSI_FILE(15, 1, 6);
541
542 struct stsi_file {
543 const struct file_operations *fops;
544 char *name;
545 };
546
547 static struct stsi_file stsi_file[] __initdata = {
548 {.fops = &stsi_1_1_1_fs_ops, .name = "1_1_1"},
549 {.fops = &stsi_1_2_1_fs_ops, .name = "1_2_1"},
550 {.fops = &stsi_1_2_2_fs_ops, .name = "1_2_2"},
551 {.fops = &stsi_2_2_1_fs_ops, .name = "2_2_1"},
552 {.fops = &stsi_2_2_2_fs_ops, .name = "2_2_2"},
553 {.fops = &stsi_3_2_2_fs_ops, .name = "3_2_2"},
554 {.fops = &stsi_15_1_2_fs_ops, .name = "15_1_2"},
555 {.fops = &stsi_15_1_3_fs_ops, .name = "15_1_3"},
556 {.fops = &stsi_15_1_4_fs_ops, .name = "15_1_4"},
557 {.fops = &stsi_15_1_5_fs_ops, .name = "15_1_5"},
558 {.fops = &stsi_15_1_6_fs_ops, .name = "15_1_6"},
559 };
560
561 static u8 stsi_0_0_0;
562
stsi_init_debugfs(void)563 static __init int stsi_init_debugfs(void)
564 {
565 struct dentry *stsi_root;
566 struct stsi_file *sf;
567 int lvl, i;
568
569 stsi_root = debugfs_create_dir("stsi", arch_debugfs_dir);
570 if (IS_ERR_OR_NULL(stsi_root))
571 return 0;
572 lvl = stsi(NULL, 0, 0, 0);
573 if (lvl > 0)
574 stsi_0_0_0 = lvl;
575 debugfs_create_u8("0_0_0", 0400, stsi_root, &stsi_0_0_0);
576 for (i = 0; i < ARRAY_SIZE(stsi_file); i++) {
577 sf = &stsi_file[i];
578 debugfs_create_file(sf->name, 0400, stsi_root, NULL, sf->fops);
579 }
580 if (IS_ENABLED(CONFIG_SCHED_TOPOLOGY) && MACHINE_HAS_TOPOLOGY) {
581 char link_to[10];
582
583 sprintf(link_to, "15_1_%d", topology_mnest_limit());
584 debugfs_create_symlink("topology", stsi_root, link_to);
585 }
586 return 0;
587 }
588 device_initcall(stsi_init_debugfs);
589
590 #endif /* CONFIG_DEBUG_FS */
591