Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
94f5b09d HC |
2 | * Copyright IBM Corp. 2001, 2009 |
3 | * Author(s): Ulrich Weigand <Ulrich.Weigand@de.ibm.com>, | |
4 | * Martin Schwidefsky <schwidefsky@de.ibm.com>, | |
1da177e4 LT |
5 | */ |
6 | ||
ae5ca67a | 7 | #include <linux/debugfs.h> |
1da177e4 LT |
8 | #include <linux/kernel.h> |
9 | #include <linux/mm.h> | |
10 | #include <linux/proc_fs.h> | |
6bcac508 | 11 | #include <linux/seq_file.h> |
1da177e4 | 12 | #include <linux/init.h> |
31ee4b2f | 13 | #include <linux/delay.h> |
3994a52b | 14 | #include <linux/export.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
1da177e4 | 16 | #include <asm/ebcdic.h> |
ae5ca67a | 17 | #include <asm/debug.h> |
aa24f7f0 | 18 | #include <asm/sysinfo.h> |
6bcac508 | 19 | #include <asm/cpcmd.h> |
96f4a70d | 20 | #include <asm/topology.h> |
9c203239 | 21 | #include <asm/fpu/api.h> |
31ee4b2f | 22 | |
fade4dc4 HC |
23 | int topology_max_mnest; |
24 | ||
2c79813a | 25 | static inline int __stsi(void *sysinfo, int fc, int sel1, int sel2, int *lvl) |
1da177e4 | 26 | { |
caf757c6 HC |
27 | register int r0 asm("0") = (fc << 28) | sel1; |
28 | register int r1 asm("1") = sel2; | |
29 | int rc = 0; | |
30 | ||
31 | asm volatile( | |
32 | " stsi 0(%3)\n" | |
33 | "0: jz 2f\n" | |
34 | "1: lhi %1,%4\n" | |
35 | "2:\n" | |
36 | EX_TABLE(0b, 1b) | |
37 | : "+d" (r0), "+d" (rc) | |
38 | : "d" (r1), "a" (sysinfo), "K" (-EOPNOTSUPP) | |
39 | : "cc", "memory"); | |
2c79813a HC |
40 | *lvl = ((unsigned int) r0) >> 28; |
41 | return rc; | |
42 | } | |
43 | ||
44 | /* | |
45 | * stsi - store system information | |
46 | * | |
47 | * Returns the current configuration level if function code 0 was specified. | |
48 | * Otherwise returns 0 on success or a negative value on error. | |
49 | */ | |
50 | int stsi(void *sysinfo, int fc, int sel1, int sel2) | |
51 | { | |
52 | int lvl, rc; | |
53 | ||
54 | rc = __stsi(sysinfo, fc, sel1, sel2, &lvl); | |
caf757c6 HC |
55 | if (rc) |
56 | return rc; | |
2c79813a | 57 | return fc ? 0 : lvl; |
1da177e4 | 58 | } |
caf757c6 | 59 | EXPORT_SYMBOL(stsi); |
1da177e4 | 60 | |
e32eae10 VM |
61 | static bool convert_ext_name(unsigned char encoding, char *name, size_t len) |
62 | { | |
63 | switch (encoding) { | |
64 | case 1: /* EBCDIC */ | |
65 | EBCASC(name, len); | |
66 | break; | |
67 | case 2: /* UTF-8 */ | |
68 | break; | |
69 | default: | |
70 | return false; | |
71 | } | |
72 | return true; | |
73 | } | |
74 | ||
0facaa17 | 75 | static void stsi_1_1_1(struct seq_file *m, struct sysinfo_1_1_1 *info) |
1da177e4 | 76 | { |
25502f00 HC |
77 | int i; |
78 | ||
caf757c6 | 79 | if (stsi(info, 1, 1, 1)) |
0facaa17 | 80 | return; |
0fee644a MS |
81 | EBCASC(info->manufacturer, sizeof(info->manufacturer)); |
82 | EBCASC(info->type, sizeof(info->type)); | |
83 | EBCASC(info->model, sizeof(info->model)); | |
84 | EBCASC(info->sequence, sizeof(info->sequence)); | |
85 | EBCASC(info->plant, sizeof(info->plant)); | |
86 | EBCASC(info->model_capacity, sizeof(info->model_capacity)); | |
cbce70e6 MS |
87 | EBCASC(info->model_perm_cap, sizeof(info->model_perm_cap)); |
88 | EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap)); | |
0facaa17 HC |
89 | seq_printf(m, "Manufacturer: %-16.16s\n", info->manufacturer); |
90 | seq_printf(m, "Type: %-4.4s\n", info->type); | |
91 | /* | |
92 | * Sigh: the model field has been renamed with System z9 | |
93 | * to model_capacity and a new model field has been added | |
94 | * after the plant field. To avoid confusing older programs | |
95 | * the "Model:" prints "model_capacity model" or just | |
96 | * "model_capacity" if the model string is empty . | |
97 | */ | |
98 | seq_printf(m, "Model: %-16.16s", info->model_capacity); | |
0fee644a | 99 | if (info->model[0] != '\0') |
0facaa17 HC |
100 | seq_printf(m, " %-16.16s", info->model); |
101 | seq_putc(m, '\n'); | |
102 | seq_printf(m, "Sequence Code: %-16.16s\n", info->sequence); | |
103 | seq_printf(m, "Plant: %-4.4s\n", info->plant); | |
104 | seq_printf(m, "Model Capacity: %-16.16s %08u\n", | |
25502f00 HC |
105 | info->model_capacity, info->model_cap_rating); |
106 | if (info->model_perm_cap_rating) | |
0facaa17 HC |
107 | seq_printf(m, "Model Perm. Capacity: %-16.16s %08u\n", |
108 | info->model_perm_cap, | |
25502f00 HC |
109 | info->model_perm_cap_rating); |
110 | if (info->model_temp_cap_rating) | |
0facaa17 HC |
111 | seq_printf(m, "Model Temp. Capacity: %-16.16s %08u\n", |
112 | info->model_temp_cap, | |
25502f00 HC |
113 | info->model_temp_cap_rating); |
114 | if (info->ncr) | |
115 | seq_printf(m, "Nominal Cap. Rating: %08u\n", info->ncr); | |
116 | if (info->npr) | |
117 | seq_printf(m, "Nominal Perm. Rating: %08u\n", info->npr); | |
118 | if (info->ntr) | |
119 | seq_printf(m, "Nominal Temp. Rating: %08u\n", info->ntr); | |
7aca2eda | 120 | if (info->cai) { |
0facaa17 HC |
121 | seq_printf(m, "Capacity Adj. Ind.: %d\n", info->cai); |
122 | seq_printf(m, "Capacity Ch. Reason: %d\n", info->ccr); | |
25502f00 HC |
123 | seq_printf(m, "Capacity Transient: %d\n", info->t); |
124 | } | |
125 | if (info->p) { | |
126 | for (i = 1; i <= ARRAY_SIZE(info->typepct); i++) { | |
127 | seq_printf(m, "Type %d Percentage: %d\n", | |
128 | i, info->typepct[i - 1]); | |
129 | } | |
7aca2eda | 130 | } |
1da177e4 LT |
131 | } |
132 | ||
0facaa17 | 133 | static void stsi_15_1_x(struct seq_file *m, struct sysinfo_15_1_x *info) |
96f4a70d | 134 | { |
e527aec4 | 135 | int i; |
96f4a70d | 136 | |
0facaa17 | 137 | seq_putc(m, '\n'); |
96f4a70d | 138 | if (!MACHINE_HAS_TOPOLOGY) |
0facaa17 | 139 | return; |
caf757c6 HC |
140 | if (stsi(info, 15, 1, topology_max_mnest)) |
141 | return; | |
0facaa17 | 142 | seq_printf(m, "CPU Topology HW: "); |
96f4a70d | 143 | for (i = 0; i < TOPOLOGY_NR_MAG; i++) |
0facaa17 HC |
144 | seq_printf(m, " %d", info->mag[i]); |
145 | seq_putc(m, '\n'); | |
9236b4dd | 146 | #ifdef CONFIG_SCHED_TOPOLOGY |
96f4a70d | 147 | store_topology(info); |
0facaa17 | 148 | seq_printf(m, "CPU Topology SW: "); |
96f4a70d | 149 | for (i = 0; i < TOPOLOGY_NR_MAG; i++) |
0facaa17 HC |
150 | seq_printf(m, " %d", info->mag[i]); |
151 | seq_putc(m, '\n'); | |
8d11e021 | 152 | #endif |
96f4a70d HC |
153 | } |
154 | ||
0facaa17 | 155 | static void stsi_1_2_2(struct seq_file *m, struct sysinfo_1_2_2 *info) |
1da177e4 | 156 | { |
0fee644a MS |
157 | struct sysinfo_1_2_2_extension *ext; |
158 | int i; | |
159 | ||
caf757c6 | 160 | if (stsi(info, 1, 2, 2)) |
0facaa17 | 161 | return; |
0fee644a MS |
162 | ext = (struct sysinfo_1_2_2_extension *) |
163 | ((unsigned long) info + info->acc_offset); | |
0facaa17 HC |
164 | seq_printf(m, "CPUs Total: %d\n", info->cpus_total); |
165 | seq_printf(m, "CPUs Configured: %d\n", info->cpus_configured); | |
166 | seq_printf(m, "CPUs Standby: %d\n", info->cpus_standby); | |
167 | seq_printf(m, "CPUs Reserved: %d\n", info->cpus_reserved); | |
7022ec49 HC |
168 | if (info->mt_installed) { |
169 | seq_printf(m, "CPUs G-MTID: %d\n", info->mt_gtid); | |
170 | seq_printf(m, "CPUs S-MTID: %d\n", info->mt_stid); | |
171 | } | |
0facaa17 HC |
172 | /* |
173 | * Sigh 2. According to the specification the alternate | |
174 | * capability field is a 32 bit floating point number | |
175 | * if the higher order 8 bits are not zero. Printing | |
176 | * a floating point number in the kernel is a no-no, | |
177 | * always print the number as 32 bit unsigned integer. | |
178 | * The user-space needs to know about the strange | |
179 | * encoding of the alternate cpu capability. | |
180 | */ | |
181 | seq_printf(m, "Capability: %u", info->capability); | |
182 | if (info->format == 1) | |
183 | seq_printf(m, " %u", ext->alt_capability); | |
184 | seq_putc(m, '\n'); | |
25502f00 HC |
185 | if (info->nominal_cap) |
186 | seq_printf(m, "Nominal Capability: %d\n", info->nominal_cap); | |
187 | if (info->secondary_cap) | |
188 | seq_printf(m, "Secondary Capability: %d\n", info->secondary_cap); | |
0facaa17 HC |
189 | for (i = 2; i <= info->cpus_total; i++) { |
190 | seq_printf(m, "Adjustment %02d-way: %u", | |
191 | i, info->adjustment[i-2]); | |
192 | if (info->format == 1) | |
193 | seq_printf(m, " %u", ext->alt_adjustment[i-2]); | |
194 | seq_putc(m, '\n'); | |
0fee644a | 195 | } |
1da177e4 LT |
196 | } |
197 | ||
0facaa17 | 198 | static void stsi_2_2_2(struct seq_file *m, struct sysinfo_2_2_2 *info) |
1da177e4 | 199 | { |
caf757c6 | 200 | if (stsi(info, 2, 2, 2)) |
0facaa17 | 201 | return; |
94f5b09d | 202 | EBCASC(info->name, sizeof(info->name)); |
0facaa17 HC |
203 | seq_putc(m, '\n'); |
204 | seq_printf(m, "LPAR Number: %d\n", info->lpar_number); | |
205 | seq_printf(m, "LPAR Characteristics: "); | |
0fee644a | 206 | if (info->characteristics & LPAR_CHAR_DEDICATED) |
0facaa17 | 207 | seq_printf(m, "Dedicated "); |
0fee644a | 208 | if (info->characteristics & LPAR_CHAR_SHARED) |
0facaa17 | 209 | seq_printf(m, "Shared "); |
0fee644a | 210 | if (info->characteristics & LPAR_CHAR_LIMITED) |
0facaa17 HC |
211 | seq_printf(m, "Limited "); |
212 | seq_putc(m, '\n'); | |
213 | seq_printf(m, "LPAR Name: %-8.8s\n", info->name); | |
214 | seq_printf(m, "LPAR Adjustment: %d\n", info->caf); | |
215 | seq_printf(m, "LPAR CPUs Total: %d\n", info->cpus_total); | |
216 | seq_printf(m, "LPAR CPUs Configured: %d\n", info->cpus_configured); | |
217 | seq_printf(m, "LPAR CPUs Standby: %d\n", info->cpus_standby); | |
218 | seq_printf(m, "LPAR CPUs Reserved: %d\n", info->cpus_reserved); | |
219 | seq_printf(m, "LPAR CPUs Dedicated: %d\n", info->cpus_dedicated); | |
220 | seq_printf(m, "LPAR CPUs Shared: %d\n", info->cpus_shared); | |
7022ec49 HC |
221 | if (info->mt_installed) { |
222 | seq_printf(m, "LPAR CPUs G-MTID: %d\n", info->mt_gtid); | |
223 | seq_printf(m, "LPAR CPUs S-MTID: %d\n", info->mt_stid); | |
224 | seq_printf(m, "LPAR CPUs PS-MTID: %d\n", info->mt_psmtid); | |
10ad34bc | 225 | } |
e32eae10 VM |
226 | if (convert_ext_name(info->vsne, info->ext_name, sizeof(info->ext_name))) { |
227 | seq_printf(m, "LPAR Extended Name: %-.256s\n", info->ext_name); | |
228 | seq_printf(m, "LPAR UUID: %pUb\n", &info->uuid); | |
229 | } | |
1da177e4 LT |
230 | } |
231 | ||
f3d0bd6c ET |
232 | static void print_ext_name(struct seq_file *m, int lvl, |
233 | struct sysinfo_3_2_2 *info) | |
234 | { | |
e32eae10 VM |
235 | size_t len = sizeof(info->ext_names[lvl]); |
236 | ||
237 | if (!convert_ext_name(info->vm[lvl].evmne, info->ext_names[lvl], len)) | |
f3d0bd6c | 238 | return; |
f3d0bd6c ET |
239 | seq_printf(m, "VM%02d Extended Name: %-.256s\n", lvl, |
240 | info->ext_names[lvl]); | |
241 | } | |
242 | ||
243 | static void print_uuid(struct seq_file *m, int i, struct sysinfo_3_2_2 *info) | |
244 | { | |
e64e17a5 | 245 | if (uuid_is_null(&info->vm[i].uuid)) |
f3d0bd6c ET |
246 | return; |
247 | seq_printf(m, "VM%02d UUID: %pUb\n", i, &info->vm[i].uuid); | |
248 | } | |
249 | ||
0facaa17 | 250 | static void stsi_3_2_2(struct seq_file *m, struct sysinfo_3_2_2 *info) |
1da177e4 | 251 | { |
0fee644a MS |
252 | int i; |
253 | ||
caf757c6 | 254 | if (stsi(info, 3, 2, 2)) |
0facaa17 | 255 | return; |
0fee644a | 256 | for (i = 0; i < info->count; i++) { |
94f5b09d HC |
257 | EBCASC(info->vm[i].name, sizeof(info->vm[i].name)); |
258 | EBCASC(info->vm[i].cpi, sizeof(info->vm[i].cpi)); | |
0facaa17 HC |
259 | seq_putc(m, '\n'); |
260 | seq_printf(m, "VM%02d Name: %-8.8s\n", i, info->vm[i].name); | |
261 | seq_printf(m, "VM%02d Control Program: %-16.16s\n", i, info->vm[i].cpi); | |
262 | seq_printf(m, "VM%02d Adjustment: %d\n", i, info->vm[i].caf); | |
263 | seq_printf(m, "VM%02d CPUs Total: %d\n", i, info->vm[i].cpus_total); | |
264 | seq_printf(m, "VM%02d CPUs Configured: %d\n", i, info->vm[i].cpus_configured); | |
265 | seq_printf(m, "VM%02d CPUs Standby: %d\n", i, info->vm[i].cpus_standby); | |
266 | seq_printf(m, "VM%02d CPUs Reserved: %d\n", i, info->vm[i].cpus_reserved); | |
f3d0bd6c ET |
267 | print_ext_name(m, i, info); |
268 | print_uuid(m, i, info); | |
1da177e4 | 269 | } |
1da177e4 LT |
270 | } |
271 | ||
0facaa17 | 272 | static int sysinfo_show(struct seq_file *m, void *v) |
1da177e4 | 273 | { |
0facaa17 HC |
274 | void *info = (void *)get_zeroed_page(GFP_KERNEL); |
275 | int level; | |
94f5b09d | 276 | |
1da177e4 LT |
277 | if (!info) |
278 | return 0; | |
caf757c6 | 279 | level = stsi(NULL, 0, 0, 0); |
0fee644a | 280 | if (level >= 1) |
0facaa17 | 281 | stsi_1_1_1(m, info); |
0fee644a | 282 | if (level >= 1) |
0facaa17 | 283 | stsi_15_1_x(m, info); |
96f4a70d | 284 | if (level >= 1) |
0facaa17 | 285 | stsi_1_2_2(m, info); |
0fee644a | 286 | if (level >= 2) |
0facaa17 | 287 | stsi_2_2_2(m, info); |
0fee644a | 288 | if (level >= 3) |
0facaa17 HC |
289 | stsi_3_2_2(m, info); |
290 | free_page((unsigned long)info); | |
291 | return 0; | |
292 | } | |
1da177e4 | 293 | |
0facaa17 HC |
294 | static int sysinfo_open(struct inode *inode, struct file *file) |
295 | { | |
296 | return single_open(file, sysinfo_show, NULL); | |
1da177e4 LT |
297 | } |
298 | ||
0facaa17 HC |
299 | static const struct file_operations sysinfo_fops = { |
300 | .open = sysinfo_open, | |
301 | .read = seq_read, | |
302 | .llseek = seq_lseek, | |
303 | .release = single_release, | |
304 | }; | |
305 | ||
306 | static int __init sysinfo_create_proc(void) | |
1da177e4 | 307 | { |
0facaa17 | 308 | proc_create("sysinfo", 0444, NULL, &sysinfo_fops); |
1da177e4 LT |
309 | return 0; |
310 | } | |
0facaa17 | 311 | device_initcall(sysinfo_create_proc); |
1da177e4 | 312 | |
6bcac508 MS |
313 | /* |
314 | * Service levels interface. | |
315 | */ | |
316 | ||
317 | static DECLARE_RWSEM(service_level_sem); | |
318 | static LIST_HEAD(service_level_list); | |
319 | ||
320 | int register_service_level(struct service_level *slr) | |
321 | { | |
322 | struct service_level *ptr; | |
323 | ||
324 | down_write(&service_level_sem); | |
325 | list_for_each_entry(ptr, &service_level_list, list) | |
326 | if (ptr == slr) { | |
327 | up_write(&service_level_sem); | |
328 | return -EEXIST; | |
329 | } | |
330 | list_add_tail(&slr->list, &service_level_list); | |
331 | up_write(&service_level_sem); | |
332 | return 0; | |
333 | } | |
334 | EXPORT_SYMBOL(register_service_level); | |
335 | ||
336 | int unregister_service_level(struct service_level *slr) | |
337 | { | |
338 | struct service_level *ptr, *next; | |
339 | int rc = -ENOENT; | |
340 | ||
341 | down_write(&service_level_sem); | |
342 | list_for_each_entry_safe(ptr, next, &service_level_list, list) { | |
343 | if (ptr != slr) | |
344 | continue; | |
345 | list_del(&ptr->list); | |
346 | rc = 0; | |
347 | break; | |
348 | } | |
349 | up_write(&service_level_sem); | |
350 | return rc; | |
351 | } | |
352 | EXPORT_SYMBOL(unregister_service_level); | |
353 | ||
354 | static void *service_level_start(struct seq_file *m, loff_t *pos) | |
355 | { | |
356 | down_read(&service_level_sem); | |
357 | return seq_list_start(&service_level_list, *pos); | |
358 | } | |
359 | ||
360 | static void *service_level_next(struct seq_file *m, void *p, loff_t *pos) | |
361 | { | |
362 | return seq_list_next(p, &service_level_list, pos); | |
363 | } | |
364 | ||
365 | static void service_level_stop(struct seq_file *m, void *p) | |
366 | { | |
367 | up_read(&service_level_sem); | |
368 | } | |
369 | ||
370 | static int service_level_show(struct seq_file *m, void *p) | |
371 | { | |
372 | struct service_level *slr; | |
373 | ||
374 | slr = list_entry(p, struct service_level, list); | |
375 | slr->seq_print(m, slr); | |
376 | return 0; | |
377 | } | |
378 | ||
379 | static const struct seq_operations service_level_seq_ops = { | |
380 | .start = service_level_start, | |
381 | .next = service_level_next, | |
382 | .stop = service_level_stop, | |
383 | .show = service_level_show | |
384 | }; | |
385 | ||
386 | static int service_level_open(struct inode *inode, struct file *file) | |
387 | { | |
388 | return seq_open(file, &service_level_seq_ops); | |
389 | } | |
390 | ||
391 | static const struct file_operations service_level_ops = { | |
392 | .open = service_level_open, | |
393 | .read = seq_read, | |
394 | .llseek = seq_lseek, | |
395 | .release = seq_release | |
396 | }; | |
397 | ||
398 | static void service_level_vm_print(struct seq_file *m, | |
399 | struct service_level *slr) | |
400 | { | |
401 | char *query_buffer, *str; | |
402 | ||
403 | query_buffer = kmalloc(1024, GFP_KERNEL | GFP_DMA); | |
404 | if (!query_buffer) | |
405 | return; | |
406 | cpcmd("QUERY CPLEVEL", query_buffer, 1024, NULL); | |
407 | str = strchr(query_buffer, '\n'); | |
408 | if (str) | |
409 | *str = 0; | |
410 | seq_printf(m, "VM: %s\n", query_buffer); | |
411 | kfree(query_buffer); | |
412 | } | |
413 | ||
414 | static struct service_level service_level_vm = { | |
415 | .seq_print = service_level_vm_print | |
416 | }; | |
417 | ||
418 | static __init int create_proc_service_level(void) | |
419 | { | |
420 | proc_create("service_levels", 0, NULL, &service_level_ops); | |
421 | if (MACHINE_IS_VM) | |
422 | register_service_level(&service_level_vm); | |
423 | return 0; | |
424 | } | |
6bcac508 MS |
425 | subsys_initcall(create_proc_service_level); |
426 | ||
31ee4b2f MS |
427 | /* |
428 | * CPU capability might have changed. Therefore recalculate loops_per_jiffy. | |
429 | */ | |
430 | void s390_adjust_jiffies(void) | |
431 | { | |
432 | struct sysinfo_1_2_2 *info; | |
9c203239 HC |
433 | unsigned long capability; |
434 | struct kernel_fpu fpu; | |
31ee4b2f MS |
435 | |
436 | info = (void *) get_zeroed_page(GFP_KERNEL); | |
437 | if (!info) | |
438 | return; | |
439 | ||
caf757c6 | 440 | if (stsi(info, 1, 2, 2) == 0) { |
31ee4b2f MS |
441 | /* |
442 | * Major sigh. The cpu capability encoding is "special". | |
443 | * If the first 9 bits of info->capability are 0 then it | |
444 | * is a 32 bit unsigned integer in the range 0 .. 2^23. | |
445 | * If the first 9 bits are != 0 then it is a 32 bit float. | |
446 | * In addition a lower value indicates a proportionally | |
447 | * higher cpu capacity. Bogomips are the other way round. | |
448 | * To get to a halfway suitable number we divide 1e7 | |
449 | * by the cpu capability number. Yes, that means a floating | |
9c203239 | 450 | * point division .. |
31ee4b2f | 451 | */ |
9c203239 HC |
452 | kernel_fpu_begin(&fpu, KERNEL_FPR); |
453 | asm volatile( | |
454 | " sfpc %3\n" | |
455 | " l %0,%1\n" | |
456 | " tmlh %0,0xff80\n" | |
457 | " jnz 0f\n" | |
458 | " cefbr %%f2,%0\n" | |
459 | " j 1f\n" | |
460 | "0: le %%f2,%1\n" | |
461 | "1: cefbr %%f0,%2\n" | |
462 | " debr %%f0,%%f2\n" | |
463 | " cgebr %0,5,%%f0\n" | |
464 | : "=&d" (capability) | |
465 | : "Q" (info->capability), "d" (10000000), "d" (0) | |
466 | : "cc" | |
467 | ); | |
7f79695c | 468 | kernel_fpu_end(&fpu, KERNEL_FPR); |
31ee4b2f MS |
469 | } else |
470 | /* | |
471 | * Really old machine without stsi block for basic | |
472 | * cpu information. Report 42.0 bogomips. | |
473 | */ | |
474 | capability = 42; | |
475 | loops_per_jiffy = capability * (500000/HZ); | |
476 | free_page((unsigned long) info); | |
477 | } | |
478 | ||
479 | /* | |
480 | * calibrate the delay loop | |
481 | */ | |
e2741f17 | 482 | void calibrate_delay(void) |
31ee4b2f MS |
483 | { |
484 | s390_adjust_jiffies(); | |
485 | /* Print the good old Bogomips line .. */ | |
486 | printk(KERN_DEBUG "Calibrating delay loop (skipped)... " | |
487 | "%lu.%02lu BogoMIPS preset\n", loops_per_jiffy/(500000/HZ), | |
488 | (loops_per_jiffy/(5000/HZ)) % 100); | |
489 | } | |
ae5ca67a HC |
490 | |
491 | #ifdef CONFIG_DEBUG_FS | |
492 | ||
493 | #define STSI_FILE(fc, s1, s2) \ | |
494 | static int stsi_open_##fc##_##s1##_##s2(struct inode *inode, struct file *file)\ | |
495 | { \ | |
496 | file->private_data = (void *) get_zeroed_page(GFP_KERNEL); \ | |
497 | if (!file->private_data) \ | |
498 | return -ENOMEM; \ | |
499 | if (stsi(file->private_data, fc, s1, s2)) { \ | |
500 | free_page((unsigned long)file->private_data); \ | |
501 | file->private_data = NULL; \ | |
502 | return -EACCES; \ | |
503 | } \ | |
504 | return nonseekable_open(inode, file); \ | |
505 | } \ | |
506 | \ | |
507 | static const struct file_operations stsi_##fc##_##s1##_##s2##_fs_ops = { \ | |
508 | .open = stsi_open_##fc##_##s1##_##s2, \ | |
509 | .release = stsi_release, \ | |
510 | .read = stsi_read, \ | |
511 | .llseek = no_llseek, \ | |
512 | }; | |
513 | ||
514 | static int stsi_release(struct inode *inode, struct file *file) | |
515 | { | |
516 | free_page((unsigned long)file->private_data); | |
517 | return 0; | |
518 | } | |
519 | ||
520 | static ssize_t stsi_read(struct file *file, char __user *buf, size_t size, loff_t *ppos) | |
521 | { | |
522 | return simple_read_from_buffer(buf, size, ppos, file->private_data, PAGE_SIZE); | |
523 | } | |
524 | ||
cdd3bd9d HC |
525 | STSI_FILE( 1, 1, 1); |
526 | STSI_FILE( 1, 2, 1); | |
527 | STSI_FILE( 1, 2, 2); | |
528 | STSI_FILE( 2, 2, 1); | |
529 | STSI_FILE( 2, 2, 2); | |
530 | STSI_FILE( 3, 2, 2); | |
ae5ca67a HC |
531 | STSI_FILE(15, 1, 2); |
532 | STSI_FILE(15, 1, 3); | |
533 | STSI_FILE(15, 1, 4); | |
534 | STSI_FILE(15, 1, 5); | |
535 | STSI_FILE(15, 1, 6); | |
536 | ||
537 | struct stsi_file { | |
538 | const struct file_operations *fops; | |
539 | char *name; | |
540 | }; | |
541 | ||
542 | static struct stsi_file stsi_file[] __initdata = { | |
cdd3bd9d HC |
543 | {.fops = &stsi_1_1_1_fs_ops, .name = "1_1_1"}, |
544 | {.fops = &stsi_1_2_1_fs_ops, .name = "1_2_1"}, | |
545 | {.fops = &stsi_1_2_2_fs_ops, .name = "1_2_2"}, | |
546 | {.fops = &stsi_2_2_1_fs_ops, .name = "2_2_1"}, | |
547 | {.fops = &stsi_2_2_2_fs_ops, .name = "2_2_2"}, | |
548 | {.fops = &stsi_3_2_2_fs_ops, .name = "3_2_2"}, | |
ae5ca67a HC |
549 | {.fops = &stsi_15_1_2_fs_ops, .name = "15_1_2"}, |
550 | {.fops = &stsi_15_1_3_fs_ops, .name = "15_1_3"}, | |
551 | {.fops = &stsi_15_1_4_fs_ops, .name = "15_1_4"}, | |
552 | {.fops = &stsi_15_1_5_fs_ops, .name = "15_1_5"}, | |
553 | {.fops = &stsi_15_1_6_fs_ops, .name = "15_1_6"}, | |
554 | }; | |
555 | ||
cdd3bd9d HC |
556 | static u8 stsi_0_0_0; |
557 | ||
ae5ca67a HC |
558 | static __init int stsi_init_debugfs(void) |
559 | { | |
560 | struct dentry *stsi_root; | |
561 | struct stsi_file *sf; | |
cdd3bd9d | 562 | int lvl, i; |
ae5ca67a HC |
563 | |
564 | stsi_root = debugfs_create_dir("stsi", arch_debugfs_dir); | |
565 | if (IS_ERR_OR_NULL(stsi_root)) | |
566 | return 0; | |
cdd3bd9d HC |
567 | lvl = stsi(NULL, 0, 0, 0); |
568 | if (lvl > 0) | |
569 | stsi_0_0_0 = lvl; | |
570 | debugfs_create_u8("0_0_0", 0400, stsi_root, &stsi_0_0_0); | |
ae5ca67a HC |
571 | for (i = 0; i < ARRAY_SIZE(stsi_file); i++) { |
572 | sf = &stsi_file[i]; | |
573 | debugfs_create_file(sf->name, 0400, stsi_root, NULL, sf->fops); | |
574 | } | |
575 | if (IS_ENABLED(CONFIG_SCHED_TOPOLOGY) && MACHINE_HAS_TOPOLOGY) { | |
576 | char link_to[10]; | |
577 | ||
578 | sprintf(link_to, "15_1_%d", topology_mnest_limit()); | |
579 | debugfs_create_symlink("topology", stsi_root, link_to); | |
580 | } | |
581 | return 0; | |
582 | } | |
583 | device_initcall(stsi_init_debugfs); | |
584 | ||
585 | #endif /* CONFIG_DEBUG_FS */ |