Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
94f5b09d HC |
3 | * Copyright IBM Corp. 2001, 2009 |
4 | * Author(s): Ulrich Weigand <Ulrich.Weigand@de.ibm.com>, | |
5 | * Martin Schwidefsky <schwidefsky@de.ibm.com>, | |
1da177e4 LT |
6 | */ |
7 | ||
ae5ca67a | 8 | #include <linux/debugfs.h> |
1da177e4 LT |
9 | #include <linux/kernel.h> |
10 | #include <linux/mm.h> | |
11 | #include <linux/proc_fs.h> | |
6bcac508 | 12 | #include <linux/seq_file.h> |
1da177e4 | 13 | #include <linux/init.h> |
31ee4b2f | 14 | #include <linux/delay.h> |
3994a52b | 15 | #include <linux/export.h> |
5a0e3ad6 | 16 | #include <linux/slab.h> |
1da177e4 | 17 | #include <asm/ebcdic.h> |
ae5ca67a | 18 | #include <asm/debug.h> |
aa24f7f0 | 19 | #include <asm/sysinfo.h> |
6bcac508 | 20 | #include <asm/cpcmd.h> |
96f4a70d | 21 | #include <asm/topology.h> |
9c203239 | 22 | #include <asm/fpu/api.h> |
31ee4b2f | 23 | |
fade4dc4 HC |
24 | int topology_max_mnest; |
25 | ||
2c79813a | 26 | static inline int __stsi(void *sysinfo, int fc, int sel1, int sel2, int *lvl) |
1da177e4 | 27 | { |
caf757c6 HC |
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"); | |
2c79813a HC |
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 | */ | |
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); | |
caf757c6 HC |
56 | if (rc) |
57 | return rc; | |
2c79813a | 58 | return fc ? 0 : lvl; |
1da177e4 | 59 | } |
caf757c6 | 60 | EXPORT_SYMBOL(stsi); |
1da177e4 | 61 | |
e32eae10 VM |
62 | static bool convert_ext_name(unsigned char encoding, char *name, size_t len) |
63 | { | |
64 | switch (encoding) { | |
65 | case 1: /* EBCDIC */ | |
66 | EBCASC(name, len); | |
67 | break; | |
68 | case 2: /* UTF-8 */ | |
69 | break; | |
70 | default: | |
71 | return false; | |
72 | } | |
73 | return true; | |
74 | } | |
75 | ||
0facaa17 | 76 | static void stsi_1_1_1(struct seq_file *m, struct sysinfo_1_1_1 *info) |
1da177e4 | 77 | { |
25502f00 HC |
78 | int i; |
79 | ||
caf757c6 | 80 | if (stsi(info, 1, 1, 1)) |
0facaa17 | 81 | return; |
0fee644a MS |
82 | EBCASC(info->manufacturer, sizeof(info->manufacturer)); |
83 | EBCASC(info->type, sizeof(info->type)); | |
84 | EBCASC(info->model, sizeof(info->model)); | |
85 | EBCASC(info->sequence, sizeof(info->sequence)); | |
86 | EBCASC(info->plant, sizeof(info->plant)); | |
87 | EBCASC(info->model_capacity, sizeof(info->model_capacity)); | |
cbce70e6 MS |
88 | EBCASC(info->model_perm_cap, sizeof(info->model_perm_cap)); |
89 | EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap)); | |
0facaa17 HC |
90 | seq_printf(m, "Manufacturer: %-16.16s\n", info->manufacturer); |
91 | seq_printf(m, "Type: %-4.4s\n", info->type); | |
92 | /* | |
93 | * Sigh: the model field has been renamed with System z9 | |
94 | * to model_capacity and a new model field has been added | |
95 | * after the plant field. To avoid confusing older programs | |
96 | * the "Model:" prints "model_capacity model" or just | |
97 | * "model_capacity" if the model string is empty . | |
98 | */ | |
99 | seq_printf(m, "Model: %-16.16s", info->model_capacity); | |
0fee644a | 100 | if (info->model[0] != '\0') |
0facaa17 HC |
101 | seq_printf(m, " %-16.16s", info->model); |
102 | seq_putc(m, '\n'); | |
103 | seq_printf(m, "Sequence Code: %-16.16s\n", info->sequence); | |
104 | seq_printf(m, "Plant: %-4.4s\n", info->plant); | |
105 | seq_printf(m, "Model Capacity: %-16.16s %08u\n", | |
25502f00 HC |
106 | info->model_capacity, info->model_cap_rating); |
107 | if (info->model_perm_cap_rating) | |
0facaa17 HC |
108 | seq_printf(m, "Model Perm. Capacity: %-16.16s %08u\n", |
109 | info->model_perm_cap, | |
25502f00 HC |
110 | info->model_perm_cap_rating); |
111 | if (info->model_temp_cap_rating) | |
0facaa17 HC |
112 | seq_printf(m, "Model Temp. Capacity: %-16.16s %08u\n", |
113 | info->model_temp_cap, | |
25502f00 HC |
114 | info->model_temp_cap_rating); |
115 | if (info->ncr) | |
116 | seq_printf(m, "Nominal Cap. Rating: %08u\n", info->ncr); | |
117 | if (info->npr) | |
118 | seq_printf(m, "Nominal Perm. Rating: %08u\n", info->npr); | |
119 | if (info->ntr) | |
120 | seq_printf(m, "Nominal Temp. Rating: %08u\n", info->ntr); | |
7aca2eda | 121 | if (info->cai) { |
0facaa17 HC |
122 | seq_printf(m, "Capacity Adj. Ind.: %d\n", info->cai); |
123 | seq_printf(m, "Capacity Ch. Reason: %d\n", info->ccr); | |
25502f00 HC |
124 | seq_printf(m, "Capacity Transient: %d\n", info->t); |
125 | } | |
126 | if (info->p) { | |
127 | for (i = 1; i <= ARRAY_SIZE(info->typepct); i++) { | |
128 | seq_printf(m, "Type %d Percentage: %d\n", | |
129 | i, info->typepct[i - 1]); | |
130 | } | |
7aca2eda | 131 | } |
1da177e4 LT |
132 | } |
133 | ||
0facaa17 | 134 | static void stsi_15_1_x(struct seq_file *m, struct sysinfo_15_1_x *info) |
96f4a70d | 135 | { |
e527aec4 | 136 | int i; |
96f4a70d | 137 | |
0facaa17 | 138 | seq_putc(m, '\n'); |
96f4a70d | 139 | if (!MACHINE_HAS_TOPOLOGY) |
0facaa17 | 140 | return; |
caf757c6 HC |
141 | if (stsi(info, 15, 1, topology_max_mnest)) |
142 | return; | |
0facaa17 | 143 | seq_printf(m, "CPU Topology HW: "); |
96f4a70d | 144 | for (i = 0; i < TOPOLOGY_NR_MAG; i++) |
0facaa17 HC |
145 | seq_printf(m, " %d", info->mag[i]); |
146 | seq_putc(m, '\n'); | |
9236b4dd | 147 | #ifdef CONFIG_SCHED_TOPOLOGY |
96f4a70d | 148 | store_topology(info); |
0facaa17 | 149 | seq_printf(m, "CPU Topology SW: "); |
96f4a70d | 150 | for (i = 0; i < TOPOLOGY_NR_MAG; i++) |
0facaa17 HC |
151 | seq_printf(m, " %d", info->mag[i]); |
152 | seq_putc(m, '\n'); | |
8d11e021 | 153 | #endif |
96f4a70d HC |
154 | } |
155 | ||
0facaa17 | 156 | static void stsi_1_2_2(struct seq_file *m, struct sysinfo_1_2_2 *info) |
1da177e4 | 157 | { |
0fee644a MS |
158 | struct sysinfo_1_2_2_extension *ext; |
159 | int i; | |
160 | ||
caf757c6 | 161 | if (stsi(info, 1, 2, 2)) |
0facaa17 | 162 | return; |
0fee644a MS |
163 | ext = (struct sysinfo_1_2_2_extension *) |
164 | ((unsigned long) info + info->acc_offset); | |
0facaa17 HC |
165 | seq_printf(m, "CPUs Total: %d\n", info->cpus_total); |
166 | seq_printf(m, "CPUs Configured: %d\n", info->cpus_configured); | |
167 | seq_printf(m, "CPUs Standby: %d\n", info->cpus_standby); | |
168 | seq_printf(m, "CPUs Reserved: %d\n", info->cpus_reserved); | |
7022ec49 HC |
169 | if (info->mt_installed) { |
170 | seq_printf(m, "CPUs G-MTID: %d\n", info->mt_gtid); | |
171 | seq_printf(m, "CPUs S-MTID: %d\n", info->mt_stid); | |
172 | } | |
0facaa17 HC |
173 | /* |
174 | * Sigh 2. According to the specification the alternate | |
175 | * capability field is a 32 bit floating point number | |
176 | * if the higher order 8 bits are not zero. Printing | |
177 | * a floating point number in the kernel is a no-no, | |
178 | * always print the number as 32 bit unsigned integer. | |
179 | * The user-space needs to know about the strange | |
180 | * encoding of the alternate cpu capability. | |
181 | */ | |
182 | seq_printf(m, "Capability: %u", info->capability); | |
183 | if (info->format == 1) | |
184 | seq_printf(m, " %u", ext->alt_capability); | |
185 | seq_putc(m, '\n'); | |
25502f00 HC |
186 | if (info->nominal_cap) |
187 | seq_printf(m, "Nominal Capability: %d\n", info->nominal_cap); | |
188 | if (info->secondary_cap) | |
189 | seq_printf(m, "Secondary Capability: %d\n", info->secondary_cap); | |
0facaa17 HC |
190 | for (i = 2; i <= info->cpus_total; i++) { |
191 | seq_printf(m, "Adjustment %02d-way: %u", | |
192 | i, info->adjustment[i-2]); | |
193 | if (info->format == 1) | |
194 | seq_printf(m, " %u", ext->alt_adjustment[i-2]); | |
195 | seq_putc(m, '\n'); | |
0fee644a | 196 | } |
1da177e4 LT |
197 | } |
198 | ||
0facaa17 | 199 | static void stsi_2_2_2(struct seq_file *m, struct sysinfo_2_2_2 *info) |
1da177e4 | 200 | { |
caf757c6 | 201 | if (stsi(info, 2, 2, 2)) |
0facaa17 | 202 | return; |
94f5b09d | 203 | EBCASC(info->name, sizeof(info->name)); |
0facaa17 HC |
204 | seq_putc(m, '\n'); |
205 | seq_printf(m, "LPAR Number: %d\n", info->lpar_number); | |
206 | seq_printf(m, "LPAR Characteristics: "); | |
0fee644a | 207 | if (info->characteristics & LPAR_CHAR_DEDICATED) |
0facaa17 | 208 | seq_printf(m, "Dedicated "); |
0fee644a | 209 | if (info->characteristics & LPAR_CHAR_SHARED) |
0facaa17 | 210 | seq_printf(m, "Shared "); |
0fee644a | 211 | if (info->characteristics & LPAR_CHAR_LIMITED) |
0facaa17 HC |
212 | seq_printf(m, "Limited "); |
213 | seq_putc(m, '\n'); | |
214 | seq_printf(m, "LPAR Name: %-8.8s\n", info->name); | |
215 | seq_printf(m, "LPAR Adjustment: %d\n", info->caf); | |
216 | seq_printf(m, "LPAR CPUs Total: %d\n", info->cpus_total); | |
217 | seq_printf(m, "LPAR CPUs Configured: %d\n", info->cpus_configured); | |
218 | seq_printf(m, "LPAR CPUs Standby: %d\n", info->cpus_standby); | |
219 | seq_printf(m, "LPAR CPUs Reserved: %d\n", info->cpus_reserved); | |
220 | seq_printf(m, "LPAR CPUs Dedicated: %d\n", info->cpus_dedicated); | |
221 | seq_printf(m, "LPAR CPUs Shared: %d\n", info->cpus_shared); | |
7022ec49 HC |
222 | if (info->mt_installed) { |
223 | seq_printf(m, "LPAR CPUs G-MTID: %d\n", info->mt_gtid); | |
224 | seq_printf(m, "LPAR CPUs S-MTID: %d\n", info->mt_stid); | |
225 | seq_printf(m, "LPAR CPUs PS-MTID: %d\n", info->mt_psmtid); | |
10ad34bc | 226 | } |
e32eae10 VM |
227 | if (convert_ext_name(info->vsne, info->ext_name, sizeof(info->ext_name))) { |
228 | seq_printf(m, "LPAR Extended Name: %-.256s\n", info->ext_name); | |
229 | seq_printf(m, "LPAR UUID: %pUb\n", &info->uuid); | |
230 | } | |
1da177e4 LT |
231 | } |
232 | ||
f3d0bd6c ET |
233 | static void print_ext_name(struct seq_file *m, int lvl, |
234 | struct sysinfo_3_2_2 *info) | |
235 | { | |
e32eae10 VM |
236 | size_t len = sizeof(info->ext_names[lvl]); |
237 | ||
238 | if (!convert_ext_name(info->vm[lvl].evmne, info->ext_names[lvl], len)) | |
f3d0bd6c | 239 | return; |
f3d0bd6c ET |
240 | seq_printf(m, "VM%02d Extended Name: %-.256s\n", lvl, |
241 | info->ext_names[lvl]); | |
242 | } | |
243 | ||
244 | static void print_uuid(struct seq_file *m, int i, struct sysinfo_3_2_2 *info) | |
245 | { | |
e64e17a5 | 246 | if (uuid_is_null(&info->vm[i].uuid)) |
f3d0bd6c ET |
247 | return; |
248 | seq_printf(m, "VM%02d UUID: %pUb\n", i, &info->vm[i].uuid); | |
249 | } | |
250 | ||
0facaa17 | 251 | static void stsi_3_2_2(struct seq_file *m, struct sysinfo_3_2_2 *info) |
1da177e4 | 252 | { |
0fee644a MS |
253 | int i; |
254 | ||
caf757c6 | 255 | if (stsi(info, 3, 2, 2)) |
0facaa17 | 256 | return; |
0fee644a | 257 | for (i = 0; i < info->count; i++) { |
94f5b09d HC |
258 | EBCASC(info->vm[i].name, sizeof(info->vm[i].name)); |
259 | EBCASC(info->vm[i].cpi, sizeof(info->vm[i].cpi)); | |
0facaa17 HC |
260 | seq_putc(m, '\n'); |
261 | seq_printf(m, "VM%02d Name: %-8.8s\n", i, info->vm[i].name); | |
262 | seq_printf(m, "VM%02d Control Program: %-16.16s\n", i, info->vm[i].cpi); | |
263 | seq_printf(m, "VM%02d Adjustment: %d\n", i, info->vm[i].caf); | |
264 | seq_printf(m, "VM%02d CPUs Total: %d\n", i, info->vm[i].cpus_total); | |
265 | seq_printf(m, "VM%02d CPUs Configured: %d\n", i, info->vm[i].cpus_configured); | |
266 | seq_printf(m, "VM%02d CPUs Standby: %d\n", i, info->vm[i].cpus_standby); | |
267 | seq_printf(m, "VM%02d CPUs Reserved: %d\n", i, info->vm[i].cpus_reserved); | |
f3d0bd6c ET |
268 | print_ext_name(m, i, info); |
269 | print_uuid(m, i, info); | |
1da177e4 | 270 | } |
1da177e4 LT |
271 | } |
272 | ||
0facaa17 | 273 | static int sysinfo_show(struct seq_file *m, void *v) |
1da177e4 | 274 | { |
0facaa17 HC |
275 | void *info = (void *)get_zeroed_page(GFP_KERNEL); |
276 | int level; | |
94f5b09d | 277 | |
1da177e4 LT |
278 | if (!info) |
279 | return 0; | |
caf757c6 | 280 | level = stsi(NULL, 0, 0, 0); |
0fee644a | 281 | if (level >= 1) |
0facaa17 | 282 | stsi_1_1_1(m, info); |
0fee644a | 283 | if (level >= 1) |
0facaa17 | 284 | stsi_15_1_x(m, info); |
96f4a70d | 285 | if (level >= 1) |
0facaa17 | 286 | stsi_1_2_2(m, info); |
0fee644a | 287 | if (level >= 2) |
0facaa17 | 288 | stsi_2_2_2(m, info); |
0fee644a | 289 | if (level >= 3) |
0facaa17 HC |
290 | stsi_3_2_2(m, info); |
291 | free_page((unsigned long)info); | |
292 | return 0; | |
293 | } | |
1da177e4 | 294 | |
0facaa17 HC |
295 | static int sysinfo_open(struct inode *inode, struct file *file) |
296 | { | |
297 | return single_open(file, sysinfo_show, NULL); | |
1da177e4 LT |
298 | } |
299 | ||
0facaa17 HC |
300 | static const struct file_operations sysinfo_fops = { |
301 | .open = sysinfo_open, | |
302 | .read = seq_read, | |
303 | .llseek = seq_lseek, | |
304 | .release = single_release, | |
305 | }; | |
306 | ||
307 | static int __init sysinfo_create_proc(void) | |
1da177e4 | 308 | { |
0facaa17 | 309 | proc_create("sysinfo", 0444, NULL, &sysinfo_fops); |
1da177e4 LT |
310 | return 0; |
311 | } | |
0facaa17 | 312 | device_initcall(sysinfo_create_proc); |
1da177e4 | 313 | |
6bcac508 MS |
314 | /* |
315 | * Service levels interface. | |
316 | */ | |
317 | ||
318 | static DECLARE_RWSEM(service_level_sem); | |
319 | static LIST_HEAD(service_level_list); | |
320 | ||
321 | int register_service_level(struct service_level *slr) | |
322 | { | |
323 | struct service_level *ptr; | |
324 | ||
325 | down_write(&service_level_sem); | |
326 | list_for_each_entry(ptr, &service_level_list, list) | |
327 | if (ptr == slr) { | |
328 | up_write(&service_level_sem); | |
329 | return -EEXIST; | |
330 | } | |
331 | list_add_tail(&slr->list, &service_level_list); | |
332 | up_write(&service_level_sem); | |
333 | return 0; | |
334 | } | |
335 | EXPORT_SYMBOL(register_service_level); | |
336 | ||
337 | int unregister_service_level(struct service_level *slr) | |
338 | { | |
339 | struct service_level *ptr, *next; | |
340 | int rc = -ENOENT; | |
341 | ||
342 | down_write(&service_level_sem); | |
343 | list_for_each_entry_safe(ptr, next, &service_level_list, list) { | |
344 | if (ptr != slr) | |
345 | continue; | |
346 | list_del(&ptr->list); | |
347 | rc = 0; | |
348 | break; | |
349 | } | |
350 | up_write(&service_level_sem); | |
351 | return rc; | |
352 | } | |
353 | EXPORT_SYMBOL(unregister_service_level); | |
354 | ||
355 | static void *service_level_start(struct seq_file *m, loff_t *pos) | |
356 | { | |
357 | down_read(&service_level_sem); | |
358 | return seq_list_start(&service_level_list, *pos); | |
359 | } | |
360 | ||
361 | static void *service_level_next(struct seq_file *m, void *p, loff_t *pos) | |
362 | { | |
363 | return seq_list_next(p, &service_level_list, pos); | |
364 | } | |
365 | ||
366 | static void service_level_stop(struct seq_file *m, void *p) | |
367 | { | |
368 | up_read(&service_level_sem); | |
369 | } | |
370 | ||
371 | static int service_level_show(struct seq_file *m, void *p) | |
372 | { | |
373 | struct service_level *slr; | |
374 | ||
375 | slr = list_entry(p, struct service_level, list); | |
376 | slr->seq_print(m, slr); | |
377 | return 0; | |
378 | } | |
379 | ||
380 | static const struct seq_operations service_level_seq_ops = { | |
381 | .start = service_level_start, | |
382 | .next = service_level_next, | |
383 | .stop = service_level_stop, | |
384 | .show = service_level_show | |
385 | }; | |
386 | ||
387 | static int service_level_open(struct inode *inode, struct file *file) | |
388 | { | |
389 | return seq_open(file, &service_level_seq_ops); | |
390 | } | |
391 | ||
392 | static const struct file_operations service_level_ops = { | |
393 | .open = service_level_open, | |
394 | .read = seq_read, | |
395 | .llseek = seq_lseek, | |
396 | .release = seq_release | |
397 | }; | |
398 | ||
399 | static void service_level_vm_print(struct seq_file *m, | |
400 | struct service_level *slr) | |
401 | { | |
402 | char *query_buffer, *str; | |
403 | ||
404 | query_buffer = kmalloc(1024, GFP_KERNEL | GFP_DMA); | |
405 | if (!query_buffer) | |
406 | return; | |
407 | cpcmd("QUERY CPLEVEL", query_buffer, 1024, NULL); | |
408 | str = strchr(query_buffer, '\n'); | |
409 | if (str) | |
410 | *str = 0; | |
411 | seq_printf(m, "VM: %s\n", query_buffer); | |
412 | kfree(query_buffer); | |
413 | } | |
414 | ||
415 | static struct service_level service_level_vm = { | |
416 | .seq_print = service_level_vm_print | |
417 | }; | |
418 | ||
419 | static __init int create_proc_service_level(void) | |
420 | { | |
421 | proc_create("service_levels", 0, NULL, &service_level_ops); | |
422 | if (MACHINE_IS_VM) | |
423 | register_service_level(&service_level_vm); | |
424 | return 0; | |
425 | } | |
6bcac508 MS |
426 | subsys_initcall(create_proc_service_level); |
427 | ||
31ee4b2f MS |
428 | /* |
429 | * CPU capability might have changed. Therefore recalculate loops_per_jiffy. | |
430 | */ | |
431 | void s390_adjust_jiffies(void) | |
432 | { | |
433 | struct sysinfo_1_2_2 *info; | |
9c203239 HC |
434 | unsigned long capability; |
435 | struct kernel_fpu fpu; | |
31ee4b2f MS |
436 | |
437 | info = (void *) get_zeroed_page(GFP_KERNEL); | |
438 | if (!info) | |
439 | return; | |
440 | ||
caf757c6 | 441 | if (stsi(info, 1, 2, 2) == 0) { |
31ee4b2f MS |
442 | /* |
443 | * Major sigh. The cpu capability encoding is "special". | |
444 | * If the first 9 bits of info->capability are 0 then it | |
445 | * is a 32 bit unsigned integer in the range 0 .. 2^23. | |
446 | * If the first 9 bits are != 0 then it is a 32 bit float. | |
447 | * In addition a lower value indicates a proportionally | |
448 | * higher cpu capacity. Bogomips are the other way round. | |
449 | * To get to a halfway suitable number we divide 1e7 | |
450 | * by the cpu capability number. Yes, that means a floating | |
9c203239 | 451 | * point division .. |
31ee4b2f | 452 | */ |
9c203239 HC |
453 | kernel_fpu_begin(&fpu, KERNEL_FPR); |
454 | asm volatile( | |
455 | " sfpc %3\n" | |
456 | " l %0,%1\n" | |
457 | " tmlh %0,0xff80\n" | |
458 | " jnz 0f\n" | |
459 | " cefbr %%f2,%0\n" | |
460 | " j 1f\n" | |
461 | "0: le %%f2,%1\n" | |
462 | "1: cefbr %%f0,%2\n" | |
463 | " debr %%f0,%%f2\n" | |
464 | " cgebr %0,5,%%f0\n" | |
465 | : "=&d" (capability) | |
466 | : "Q" (info->capability), "d" (10000000), "d" (0) | |
467 | : "cc" | |
468 | ); | |
7f79695c | 469 | kernel_fpu_end(&fpu, KERNEL_FPR); |
31ee4b2f MS |
470 | } else |
471 | /* | |
472 | * Really old machine without stsi block for basic | |
473 | * cpu information. Report 42.0 bogomips. | |
474 | */ | |
475 | capability = 42; | |
476 | loops_per_jiffy = capability * (500000/HZ); | |
477 | free_page((unsigned long) info); | |
478 | } | |
479 | ||
480 | /* | |
481 | * calibrate the delay loop | |
482 | */ | |
e2741f17 | 483 | void calibrate_delay(void) |
31ee4b2f MS |
484 | { |
485 | s390_adjust_jiffies(); | |
486 | /* Print the good old Bogomips line .. */ | |
487 | printk(KERN_DEBUG "Calibrating delay loop (skipped)... " | |
488 | "%lu.%02lu BogoMIPS preset\n", loops_per_jiffy/(500000/HZ), | |
489 | (loops_per_jiffy/(5000/HZ)) % 100); | |
490 | } | |
ae5ca67a HC |
491 | |
492 | #ifdef CONFIG_DEBUG_FS | |
493 | ||
494 | #define STSI_FILE(fc, s1, s2) \ | |
495 | static int stsi_open_##fc##_##s1##_##s2(struct inode *inode, struct file *file)\ | |
496 | { \ | |
497 | file->private_data = (void *) get_zeroed_page(GFP_KERNEL); \ | |
498 | if (!file->private_data) \ | |
499 | return -ENOMEM; \ | |
500 | if (stsi(file->private_data, fc, s1, s2)) { \ | |
501 | free_page((unsigned long)file->private_data); \ | |
502 | file->private_data = NULL; \ | |
503 | return -EACCES; \ | |
504 | } \ | |
505 | return nonseekable_open(inode, file); \ | |
506 | } \ | |
507 | \ | |
508 | static const struct file_operations stsi_##fc##_##s1##_##s2##_fs_ops = { \ | |
509 | .open = stsi_open_##fc##_##s1##_##s2, \ | |
510 | .release = stsi_release, \ | |
511 | .read = stsi_read, \ | |
512 | .llseek = no_llseek, \ | |
513 | }; | |
514 | ||
515 | static int stsi_release(struct inode *inode, struct file *file) | |
516 | { | |
517 | free_page((unsigned long)file->private_data); | |
518 | return 0; | |
519 | } | |
520 | ||
521 | static ssize_t stsi_read(struct file *file, char __user *buf, size_t size, loff_t *ppos) | |
522 | { | |
523 | return simple_read_from_buffer(buf, size, ppos, file->private_data, PAGE_SIZE); | |
524 | } | |
525 | ||
cdd3bd9d HC |
526 | STSI_FILE( 1, 1, 1); |
527 | STSI_FILE( 1, 2, 1); | |
528 | STSI_FILE( 1, 2, 2); | |
529 | STSI_FILE( 2, 2, 1); | |
530 | STSI_FILE( 2, 2, 2); | |
531 | STSI_FILE( 3, 2, 2); | |
ae5ca67a HC |
532 | STSI_FILE(15, 1, 2); |
533 | STSI_FILE(15, 1, 3); | |
534 | STSI_FILE(15, 1, 4); | |
535 | STSI_FILE(15, 1, 5); | |
536 | STSI_FILE(15, 1, 6); | |
537 | ||
538 | struct stsi_file { | |
539 | const struct file_operations *fops; | |
540 | char *name; | |
541 | }; | |
542 | ||
543 | static struct stsi_file stsi_file[] __initdata = { | |
cdd3bd9d HC |
544 | {.fops = &stsi_1_1_1_fs_ops, .name = "1_1_1"}, |
545 | {.fops = &stsi_1_2_1_fs_ops, .name = "1_2_1"}, | |
546 | {.fops = &stsi_1_2_2_fs_ops, .name = "1_2_2"}, | |
547 | {.fops = &stsi_2_2_1_fs_ops, .name = "2_2_1"}, | |
548 | {.fops = &stsi_2_2_2_fs_ops, .name = "2_2_2"}, | |
549 | {.fops = &stsi_3_2_2_fs_ops, .name = "3_2_2"}, | |
ae5ca67a HC |
550 | {.fops = &stsi_15_1_2_fs_ops, .name = "15_1_2"}, |
551 | {.fops = &stsi_15_1_3_fs_ops, .name = "15_1_3"}, | |
552 | {.fops = &stsi_15_1_4_fs_ops, .name = "15_1_4"}, | |
553 | {.fops = &stsi_15_1_5_fs_ops, .name = "15_1_5"}, | |
554 | {.fops = &stsi_15_1_6_fs_ops, .name = "15_1_6"}, | |
555 | }; | |
556 | ||
cdd3bd9d HC |
557 | static u8 stsi_0_0_0; |
558 | ||
ae5ca67a HC |
559 | static __init int stsi_init_debugfs(void) |
560 | { | |
561 | struct dentry *stsi_root; | |
562 | struct stsi_file *sf; | |
cdd3bd9d | 563 | int lvl, i; |
ae5ca67a HC |
564 | |
565 | stsi_root = debugfs_create_dir("stsi", arch_debugfs_dir); | |
566 | if (IS_ERR_OR_NULL(stsi_root)) | |
567 | return 0; | |
cdd3bd9d HC |
568 | lvl = stsi(NULL, 0, 0, 0); |
569 | if (lvl > 0) | |
570 | stsi_0_0_0 = lvl; | |
571 | debugfs_create_u8("0_0_0", 0400, stsi_root, &stsi_0_0_0); | |
ae5ca67a HC |
572 | for (i = 0; i < ARRAY_SIZE(stsi_file); i++) { |
573 | sf = &stsi_file[i]; | |
574 | debugfs_create_file(sf->name, 0400, stsi_root, NULL, sf->fops); | |
575 | } | |
576 | if (IS_ENABLED(CONFIG_SCHED_TOPOLOGY) && MACHINE_HAS_TOPOLOGY) { | |
577 | char link_to[10]; | |
578 | ||
579 | sprintf(link_to, "15_1_%d", topology_mnest_limit()); | |
580 | debugfs_create_symlink("topology", stsi_root, link_to); | |
581 | } | |
582 | return 0; | |
583 | } | |
584 | device_initcall(stsi_init_debugfs); | |
585 | ||
586 | #endif /* CONFIG_DEBUG_FS */ |