]>
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 | ||
1da177e4 LT |
7 | #include <linux/kernel.h> |
8 | #include <linux/mm.h> | |
9 | #include <linux/proc_fs.h> | |
6bcac508 | 10 | #include <linux/seq_file.h> |
1da177e4 | 11 | #include <linux/init.h> |
31ee4b2f | 12 | #include <linux/delay.h> |
6bcac508 | 13 | #include <linux/module.h> |
5a0e3ad6 | 14 | #include <linux/slab.h> |
1da177e4 | 15 | #include <asm/ebcdic.h> |
aa24f7f0 | 16 | #include <asm/sysinfo.h> |
6bcac508 | 17 | #include <asm/cpcmd.h> |
96f4a70d | 18 | #include <asm/topology.h> |
1da177e4 | 19 | |
31ee4b2f MS |
20 | /* Sigh, math-emu. Don't ask. */ |
21 | #include <asm/sfp-util.h> | |
22 | #include <math-emu/soft-fp.h> | |
23 | #include <math-emu/single.h> | |
24 | ||
fade4dc4 HC |
25 | int topology_max_mnest; |
26 | ||
caf757c6 HC |
27 | /* |
28 | * stsi - store system information | |
29 | * | |
30 | * Returns the current configuration level if function code 0 was specified. | |
31 | * Otherwise returns 0 on success or a negative value on error. | |
32 | */ | |
33 | int stsi(void *sysinfo, int fc, int sel1, int sel2) | |
1da177e4 | 34 | { |
caf757c6 HC |
35 | register int r0 asm("0") = (fc << 28) | sel1; |
36 | register int r1 asm("1") = sel2; | |
37 | int rc = 0; | |
38 | ||
39 | asm volatile( | |
40 | " stsi 0(%3)\n" | |
41 | "0: jz 2f\n" | |
42 | "1: lhi %1,%4\n" | |
43 | "2:\n" | |
44 | EX_TABLE(0b, 1b) | |
45 | : "+d" (r0), "+d" (rc) | |
46 | : "d" (r1), "a" (sysinfo), "K" (-EOPNOTSUPP) | |
47 | : "cc", "memory"); | |
48 | if (rc) | |
49 | return rc; | |
50 | return fc ? 0 : ((unsigned int) r0) >> 28; | |
1da177e4 | 51 | } |
caf757c6 | 52 | EXPORT_SYMBOL(stsi); |
1da177e4 | 53 | |
0facaa17 | 54 | static void stsi_1_1_1(struct seq_file *m, struct sysinfo_1_1_1 *info) |
1da177e4 | 55 | { |
25502f00 HC |
56 | int i; |
57 | ||
caf757c6 | 58 | if (stsi(info, 1, 1, 1)) |
0facaa17 | 59 | return; |
0fee644a MS |
60 | EBCASC(info->manufacturer, sizeof(info->manufacturer)); |
61 | EBCASC(info->type, sizeof(info->type)); | |
62 | EBCASC(info->model, sizeof(info->model)); | |
63 | EBCASC(info->sequence, sizeof(info->sequence)); | |
64 | EBCASC(info->plant, sizeof(info->plant)); | |
65 | EBCASC(info->model_capacity, sizeof(info->model_capacity)); | |
cbce70e6 MS |
66 | EBCASC(info->model_perm_cap, sizeof(info->model_perm_cap)); |
67 | EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap)); | |
0facaa17 HC |
68 | seq_printf(m, "Manufacturer: %-16.16s\n", info->manufacturer); |
69 | seq_printf(m, "Type: %-4.4s\n", info->type); | |
70 | /* | |
71 | * Sigh: the model field has been renamed with System z9 | |
72 | * to model_capacity and a new model field has been added | |
73 | * after the plant field. To avoid confusing older programs | |
74 | * the "Model:" prints "model_capacity model" or just | |
75 | * "model_capacity" if the model string is empty . | |
76 | */ | |
77 | seq_printf(m, "Model: %-16.16s", info->model_capacity); | |
0fee644a | 78 | if (info->model[0] != '\0') |
0facaa17 HC |
79 | seq_printf(m, " %-16.16s", info->model); |
80 | seq_putc(m, '\n'); | |
81 | seq_printf(m, "Sequence Code: %-16.16s\n", info->sequence); | |
82 | seq_printf(m, "Plant: %-4.4s\n", info->plant); | |
83 | seq_printf(m, "Model Capacity: %-16.16s %08u\n", | |
25502f00 HC |
84 | info->model_capacity, info->model_cap_rating); |
85 | if (info->model_perm_cap_rating) | |
0facaa17 HC |
86 | seq_printf(m, "Model Perm. Capacity: %-16.16s %08u\n", |
87 | info->model_perm_cap, | |
25502f00 HC |
88 | info->model_perm_cap_rating); |
89 | if (info->model_temp_cap_rating) | |
0facaa17 HC |
90 | seq_printf(m, "Model Temp. Capacity: %-16.16s %08u\n", |
91 | info->model_temp_cap, | |
25502f00 HC |
92 | info->model_temp_cap_rating); |
93 | if (info->ncr) | |
94 | seq_printf(m, "Nominal Cap. Rating: %08u\n", info->ncr); | |
95 | if (info->npr) | |
96 | seq_printf(m, "Nominal Perm. Rating: %08u\n", info->npr); | |
97 | if (info->ntr) | |
98 | seq_printf(m, "Nominal Temp. Rating: %08u\n", info->ntr); | |
7aca2eda | 99 | if (info->cai) { |
0facaa17 HC |
100 | seq_printf(m, "Capacity Adj. Ind.: %d\n", info->cai); |
101 | seq_printf(m, "Capacity Ch. Reason: %d\n", info->ccr); | |
25502f00 HC |
102 | seq_printf(m, "Capacity Transient: %d\n", info->t); |
103 | } | |
104 | if (info->p) { | |
105 | for (i = 1; i <= ARRAY_SIZE(info->typepct); i++) { | |
106 | seq_printf(m, "Type %d Percentage: %d\n", | |
107 | i, info->typepct[i - 1]); | |
108 | } | |
7aca2eda | 109 | } |
1da177e4 LT |
110 | } |
111 | ||
0facaa17 | 112 | static void stsi_15_1_x(struct seq_file *m, struct sysinfo_15_1_x *info) |
96f4a70d HC |
113 | { |
114 | static int max_mnest; | |
115 | int i, rc; | |
116 | ||
0facaa17 | 117 | seq_putc(m, '\n'); |
96f4a70d | 118 | if (!MACHINE_HAS_TOPOLOGY) |
0facaa17 | 119 | return; |
caf757c6 HC |
120 | if (stsi(info, 15, 1, topology_max_mnest)) |
121 | return; | |
0facaa17 | 122 | seq_printf(m, "CPU Topology HW: "); |
96f4a70d | 123 | for (i = 0; i < TOPOLOGY_NR_MAG; i++) |
0facaa17 HC |
124 | seq_printf(m, " %d", info->mag[i]); |
125 | seq_putc(m, '\n'); | |
8d11e021 | 126 | #ifdef CONFIG_SCHED_MC |
96f4a70d | 127 | store_topology(info); |
0facaa17 | 128 | seq_printf(m, "CPU Topology SW: "); |
96f4a70d | 129 | for (i = 0; i < TOPOLOGY_NR_MAG; i++) |
0facaa17 HC |
130 | seq_printf(m, " %d", info->mag[i]); |
131 | seq_putc(m, '\n'); | |
8d11e021 | 132 | #endif |
96f4a70d HC |
133 | } |
134 | ||
0facaa17 | 135 | static void stsi_1_2_2(struct seq_file *m, struct sysinfo_1_2_2 *info) |
1da177e4 | 136 | { |
0fee644a MS |
137 | struct sysinfo_1_2_2_extension *ext; |
138 | int i; | |
139 | ||
caf757c6 | 140 | if (stsi(info, 1, 2, 2)) |
0facaa17 | 141 | return; |
0fee644a MS |
142 | ext = (struct sysinfo_1_2_2_extension *) |
143 | ((unsigned long) info + info->acc_offset); | |
0facaa17 HC |
144 | seq_printf(m, "CPUs Total: %d\n", info->cpus_total); |
145 | seq_printf(m, "CPUs Configured: %d\n", info->cpus_configured); | |
146 | seq_printf(m, "CPUs Standby: %d\n", info->cpus_standby); | |
147 | seq_printf(m, "CPUs Reserved: %d\n", info->cpus_reserved); | |
148 | /* | |
149 | * Sigh 2. According to the specification the alternate | |
150 | * capability field is a 32 bit floating point number | |
151 | * if the higher order 8 bits are not zero. Printing | |
152 | * a floating point number in the kernel is a no-no, | |
153 | * always print the number as 32 bit unsigned integer. | |
154 | * The user-space needs to know about the strange | |
155 | * encoding of the alternate cpu capability. | |
156 | */ | |
157 | seq_printf(m, "Capability: %u", info->capability); | |
158 | if (info->format == 1) | |
159 | seq_printf(m, " %u", ext->alt_capability); | |
160 | seq_putc(m, '\n'); | |
25502f00 HC |
161 | if (info->nominal_cap) |
162 | seq_printf(m, "Nominal Capability: %d\n", info->nominal_cap); | |
163 | if (info->secondary_cap) | |
164 | seq_printf(m, "Secondary Capability: %d\n", info->secondary_cap); | |
0facaa17 HC |
165 | for (i = 2; i <= info->cpus_total; i++) { |
166 | seq_printf(m, "Adjustment %02d-way: %u", | |
167 | i, info->adjustment[i-2]); | |
168 | if (info->format == 1) | |
169 | seq_printf(m, " %u", ext->alt_adjustment[i-2]); | |
170 | seq_putc(m, '\n'); | |
0fee644a | 171 | } |
1da177e4 LT |
172 | } |
173 | ||
0facaa17 | 174 | static void stsi_2_2_2(struct seq_file *m, struct sysinfo_2_2_2 *info) |
1da177e4 | 175 | { |
caf757c6 | 176 | if (stsi(info, 2, 2, 2)) |
0facaa17 | 177 | return; |
94f5b09d | 178 | EBCASC(info->name, sizeof(info->name)); |
0facaa17 HC |
179 | seq_putc(m, '\n'); |
180 | seq_printf(m, "LPAR Number: %d\n", info->lpar_number); | |
181 | seq_printf(m, "LPAR Characteristics: "); | |
0fee644a | 182 | if (info->characteristics & LPAR_CHAR_DEDICATED) |
0facaa17 | 183 | seq_printf(m, "Dedicated "); |
0fee644a | 184 | if (info->characteristics & LPAR_CHAR_SHARED) |
0facaa17 | 185 | seq_printf(m, "Shared "); |
0fee644a | 186 | if (info->characteristics & LPAR_CHAR_LIMITED) |
0facaa17 HC |
187 | seq_printf(m, "Limited "); |
188 | seq_putc(m, '\n'); | |
189 | seq_printf(m, "LPAR Name: %-8.8s\n", info->name); | |
190 | seq_printf(m, "LPAR Adjustment: %d\n", info->caf); | |
191 | seq_printf(m, "LPAR CPUs Total: %d\n", info->cpus_total); | |
192 | seq_printf(m, "LPAR CPUs Configured: %d\n", info->cpus_configured); | |
193 | seq_printf(m, "LPAR CPUs Standby: %d\n", info->cpus_standby); | |
194 | seq_printf(m, "LPAR CPUs Reserved: %d\n", info->cpus_reserved); | |
195 | seq_printf(m, "LPAR CPUs Dedicated: %d\n", info->cpus_dedicated); | |
196 | seq_printf(m, "LPAR CPUs Shared: %d\n", info->cpus_shared); | |
1da177e4 LT |
197 | } |
198 | ||
0facaa17 | 199 | static void stsi_3_2_2(struct seq_file *m, struct sysinfo_3_2_2 *info) |
1da177e4 | 200 | { |
0fee644a MS |
201 | int i; |
202 | ||
caf757c6 | 203 | if (stsi(info, 3, 2, 2)) |
0facaa17 | 204 | return; |
0fee644a | 205 | for (i = 0; i < info->count; i++) { |
94f5b09d HC |
206 | EBCASC(info->vm[i].name, sizeof(info->vm[i].name)); |
207 | EBCASC(info->vm[i].cpi, sizeof(info->vm[i].cpi)); | |
0facaa17 HC |
208 | seq_putc(m, '\n'); |
209 | seq_printf(m, "VM%02d Name: %-8.8s\n", i, info->vm[i].name); | |
210 | seq_printf(m, "VM%02d Control Program: %-16.16s\n", i, info->vm[i].cpi); | |
211 | seq_printf(m, "VM%02d Adjustment: %d\n", i, info->vm[i].caf); | |
212 | seq_printf(m, "VM%02d CPUs Total: %d\n", i, info->vm[i].cpus_total); | |
213 | seq_printf(m, "VM%02d CPUs Configured: %d\n", i, info->vm[i].cpus_configured); | |
214 | seq_printf(m, "VM%02d CPUs Standby: %d\n", i, info->vm[i].cpus_standby); | |
215 | seq_printf(m, "VM%02d CPUs Reserved: %d\n", i, info->vm[i].cpus_reserved); | |
1da177e4 | 216 | } |
1da177e4 LT |
217 | } |
218 | ||
0facaa17 | 219 | static int sysinfo_show(struct seq_file *m, void *v) |
1da177e4 | 220 | { |
0facaa17 HC |
221 | void *info = (void *)get_zeroed_page(GFP_KERNEL); |
222 | int level; | |
94f5b09d | 223 | |
1da177e4 LT |
224 | if (!info) |
225 | return 0; | |
caf757c6 | 226 | level = stsi(NULL, 0, 0, 0); |
0fee644a | 227 | if (level >= 1) |
0facaa17 | 228 | stsi_1_1_1(m, info); |
0fee644a | 229 | if (level >= 1) |
0facaa17 | 230 | stsi_15_1_x(m, info); |
96f4a70d | 231 | if (level >= 1) |
0facaa17 | 232 | stsi_1_2_2(m, info); |
0fee644a | 233 | if (level >= 2) |
0facaa17 | 234 | stsi_2_2_2(m, info); |
0fee644a | 235 | if (level >= 3) |
0facaa17 HC |
236 | stsi_3_2_2(m, info); |
237 | free_page((unsigned long)info); | |
238 | return 0; | |
239 | } | |
1da177e4 | 240 | |
0facaa17 HC |
241 | static int sysinfo_open(struct inode *inode, struct file *file) |
242 | { | |
243 | return single_open(file, sysinfo_show, NULL); | |
1da177e4 LT |
244 | } |
245 | ||
0facaa17 HC |
246 | static const struct file_operations sysinfo_fops = { |
247 | .open = sysinfo_open, | |
248 | .read = seq_read, | |
249 | .llseek = seq_lseek, | |
250 | .release = single_release, | |
251 | }; | |
252 | ||
253 | static int __init sysinfo_create_proc(void) | |
1da177e4 | 254 | { |
0facaa17 | 255 | proc_create("sysinfo", 0444, NULL, &sysinfo_fops); |
1da177e4 LT |
256 | return 0; |
257 | } | |
0facaa17 | 258 | device_initcall(sysinfo_create_proc); |
1da177e4 | 259 | |
6bcac508 MS |
260 | /* |
261 | * Service levels interface. | |
262 | */ | |
263 | ||
264 | static DECLARE_RWSEM(service_level_sem); | |
265 | static LIST_HEAD(service_level_list); | |
266 | ||
267 | int register_service_level(struct service_level *slr) | |
268 | { | |
269 | struct service_level *ptr; | |
270 | ||
271 | down_write(&service_level_sem); | |
272 | list_for_each_entry(ptr, &service_level_list, list) | |
273 | if (ptr == slr) { | |
274 | up_write(&service_level_sem); | |
275 | return -EEXIST; | |
276 | } | |
277 | list_add_tail(&slr->list, &service_level_list); | |
278 | up_write(&service_level_sem); | |
279 | return 0; | |
280 | } | |
281 | EXPORT_SYMBOL(register_service_level); | |
282 | ||
283 | int unregister_service_level(struct service_level *slr) | |
284 | { | |
285 | struct service_level *ptr, *next; | |
286 | int rc = -ENOENT; | |
287 | ||
288 | down_write(&service_level_sem); | |
289 | list_for_each_entry_safe(ptr, next, &service_level_list, list) { | |
290 | if (ptr != slr) | |
291 | continue; | |
292 | list_del(&ptr->list); | |
293 | rc = 0; | |
294 | break; | |
295 | } | |
296 | up_write(&service_level_sem); | |
297 | return rc; | |
298 | } | |
299 | EXPORT_SYMBOL(unregister_service_level); | |
300 | ||
301 | static void *service_level_start(struct seq_file *m, loff_t *pos) | |
302 | { | |
303 | down_read(&service_level_sem); | |
304 | return seq_list_start(&service_level_list, *pos); | |
305 | } | |
306 | ||
307 | static void *service_level_next(struct seq_file *m, void *p, loff_t *pos) | |
308 | { | |
309 | return seq_list_next(p, &service_level_list, pos); | |
310 | } | |
311 | ||
312 | static void service_level_stop(struct seq_file *m, void *p) | |
313 | { | |
314 | up_read(&service_level_sem); | |
315 | } | |
316 | ||
317 | static int service_level_show(struct seq_file *m, void *p) | |
318 | { | |
319 | struct service_level *slr; | |
320 | ||
321 | slr = list_entry(p, struct service_level, list); | |
322 | slr->seq_print(m, slr); | |
323 | return 0; | |
324 | } | |
325 | ||
326 | static const struct seq_operations service_level_seq_ops = { | |
327 | .start = service_level_start, | |
328 | .next = service_level_next, | |
329 | .stop = service_level_stop, | |
330 | .show = service_level_show | |
331 | }; | |
332 | ||
333 | static int service_level_open(struct inode *inode, struct file *file) | |
334 | { | |
335 | return seq_open(file, &service_level_seq_ops); | |
336 | } | |
337 | ||
338 | static const struct file_operations service_level_ops = { | |
339 | .open = service_level_open, | |
340 | .read = seq_read, | |
341 | .llseek = seq_lseek, | |
342 | .release = seq_release | |
343 | }; | |
344 | ||
345 | static void service_level_vm_print(struct seq_file *m, | |
346 | struct service_level *slr) | |
347 | { | |
348 | char *query_buffer, *str; | |
349 | ||
350 | query_buffer = kmalloc(1024, GFP_KERNEL | GFP_DMA); | |
351 | if (!query_buffer) | |
352 | return; | |
353 | cpcmd("QUERY CPLEVEL", query_buffer, 1024, NULL); | |
354 | str = strchr(query_buffer, '\n'); | |
355 | if (str) | |
356 | *str = 0; | |
357 | seq_printf(m, "VM: %s\n", query_buffer); | |
358 | kfree(query_buffer); | |
359 | } | |
360 | ||
361 | static struct service_level service_level_vm = { | |
362 | .seq_print = service_level_vm_print | |
363 | }; | |
364 | ||
365 | static __init int create_proc_service_level(void) | |
366 | { | |
367 | proc_create("service_levels", 0, NULL, &service_level_ops); | |
368 | if (MACHINE_IS_VM) | |
369 | register_service_level(&service_level_vm); | |
370 | return 0; | |
371 | } | |
6bcac508 MS |
372 | subsys_initcall(create_proc_service_level); |
373 | ||
31ee4b2f MS |
374 | /* |
375 | * CPU capability might have changed. Therefore recalculate loops_per_jiffy. | |
376 | */ | |
377 | void s390_adjust_jiffies(void) | |
378 | { | |
379 | struct sysinfo_1_2_2 *info; | |
380 | const unsigned int fmil = 0x4b189680; /* 1e7 as 32-bit float. */ | |
381 | FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR); | |
382 | FP_DECL_EX; | |
383 | unsigned int capability; | |
384 | ||
385 | info = (void *) get_zeroed_page(GFP_KERNEL); | |
386 | if (!info) | |
387 | return; | |
388 | ||
caf757c6 | 389 | if (stsi(info, 1, 2, 2) == 0) { |
31ee4b2f MS |
390 | /* |
391 | * Major sigh. The cpu capability encoding is "special". | |
392 | * If the first 9 bits of info->capability are 0 then it | |
393 | * is a 32 bit unsigned integer in the range 0 .. 2^23. | |
394 | * If the first 9 bits are != 0 then it is a 32 bit float. | |
395 | * In addition a lower value indicates a proportionally | |
396 | * higher cpu capacity. Bogomips are the other way round. | |
397 | * To get to a halfway suitable number we divide 1e7 | |
398 | * by the cpu capability number. Yes, that means a floating | |
399 | * point division .. math-emu here we come :-) | |
400 | */ | |
401 | FP_UNPACK_SP(SA, &fmil); | |
402 | if ((info->capability >> 23) == 0) | |
5b479a79 | 403 | FP_FROM_INT_S(SB, (long) info->capability, 64, long); |
31ee4b2f MS |
404 | else |
405 | FP_UNPACK_SP(SB, &info->capability); | |
406 | FP_DIV_S(SR, SA, SB); | |
407 | FP_TO_INT_S(capability, SR, 32, 0); | |
408 | } else | |
409 | /* | |
410 | * Really old machine without stsi block for basic | |
411 | * cpu information. Report 42.0 bogomips. | |
412 | */ | |
413 | capability = 42; | |
414 | loops_per_jiffy = capability * (500000/HZ); | |
415 | free_page((unsigned long) info); | |
416 | } | |
417 | ||
418 | /* | |
419 | * calibrate the delay loop | |
420 | */ | |
e2741f17 | 421 | void calibrate_delay(void) |
31ee4b2f MS |
422 | { |
423 | s390_adjust_jiffies(); | |
424 | /* Print the good old Bogomips line .. */ | |
425 | printk(KERN_DEBUG "Calibrating delay loop (skipped)... " | |
426 | "%lu.%02lu BogoMIPS preset\n", loops_per_jiffy/(500000/HZ), | |
427 | (loops_per_jiffy/(5000/HZ)) % 100); | |
428 | } |