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1/*
2 * Copyright IBM Corp. 2001, 2009
3 * Author(s): Ulrich Weigand <Ulrich.Weigand@de.ibm.com>,
4 * Martin Schwidefsky <schwidefsky@de.ibm.com>,
5 */
6
7#include <linux/kernel.h>
8#include <linux/mm.h>
9#include <linux/proc_fs.h>
10#include <linux/seq_file.h>
11#include <linux/init.h>
12#include <linux/delay.h>
13#include <linux/module.h>
14#include <linux/slab.h>
15#include <asm/ebcdic.h>
16#include <asm/sysinfo.h>
17#include <asm/cpcmd.h>
18#include <asm/topology.h>
19
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
25static inline int stsi_0(void)
26{
27 int rc = stsi(NULL, 0, 0, 0);
28 return rc == -ENOSYS ? rc : (((unsigned int) rc) >> 28);
29}
30
31static int stsi_1_1_1(struct sysinfo_1_1_1 *info, char *page, int len)
32{
33 if (stsi(info, 1, 1, 1) == -ENOSYS)
34 return len;
35
36 EBCASC(info->manufacturer, sizeof(info->manufacturer));
37 EBCASC(info->type, sizeof(info->type));
38 EBCASC(info->model, sizeof(info->model));
39 EBCASC(info->sequence, sizeof(info->sequence));
40 EBCASC(info->plant, sizeof(info->plant));
41 EBCASC(info->model_capacity, sizeof(info->model_capacity));
42 EBCASC(info->model_perm_cap, sizeof(info->model_perm_cap));
43 EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap));
44 len += sprintf(page + len, "Manufacturer: %-16.16s\n",
45 info->manufacturer);
46 len += sprintf(page + len, "Type: %-4.4s\n",
47 info->type);
48 if (info->model[0] != '\0')
49 /*
50 * Sigh: the model field has been renamed with System z9
51 * to model_capacity and a new model field has been added
52 * after the plant field. To avoid confusing older programs
53 * the "Model:" prints "model_capacity model" or just
54 * "model_capacity" if the model string is empty .
55 */
56 len += sprintf(page + len,
57 "Model: %-16.16s %-16.16s\n",
58 info->model_capacity, info->model);
59 else
60 len += sprintf(page + len, "Model: %-16.16s\n",
61 info->model_capacity);
62 len += sprintf(page + len, "Sequence Code: %-16.16s\n",
63 info->sequence);
64 len += sprintf(page + len, "Plant: %-4.4s\n",
65 info->plant);
66 len += sprintf(page + len, "Model Capacity: %-16.16s %08u\n",
67 info->model_capacity, *(u32 *) info->model_cap_rating);
68 if (info->model_perm_cap[0] != '\0')
69 len += sprintf(page + len,
70 "Model Perm. Capacity: %-16.16s %08u\n",
71 info->model_perm_cap,
72 *(u32 *) info->model_perm_cap_rating);
73 if (info->model_temp_cap[0] != '\0')
74 len += sprintf(page + len,
75 "Model Temp. Capacity: %-16.16s %08u\n",
76 info->model_temp_cap,
77 *(u32 *) info->model_temp_cap_rating);
78 if (info->cai) {
79 len += sprintf(page + len,
80 "Capacity Adj. Ind.: %d\n",
81 info->cai);
82 len += sprintf(page + len, "Capacity Ch. Reason: %d\n",
83 info->ccr);
84 }
85 return len;
86}
87
88static int stsi_15_1_x(struct sysinfo_15_1_x *info, char *page, int len)
89{
90 static int max_mnest;
91 int i, rc;
92
93 len += sprintf(page + len, "\n");
94 if (!MACHINE_HAS_TOPOLOGY)
95 return len;
96 if (max_mnest) {
97 stsi(info, 15, 1, max_mnest);
98 } else {
99 for (max_mnest = 6; max_mnest > 1; max_mnest--) {
100 rc = stsi(info, 15, 1, max_mnest);
101 if (rc != -ENOSYS)
102 break;
103 }
104 }
105 len += sprintf(page + len, "CPU Topology HW: ");
106 for (i = 0; i < TOPOLOGY_NR_MAG; i++)
107 len += sprintf(page + len, " %d", info->mag[i]);
108 len += sprintf(page + len, "\n");
109#ifdef CONFIG_SCHED_MC
110 store_topology(info);
111 len += sprintf(page + len, "CPU Topology SW: ");
112 for (i = 0; i < TOPOLOGY_NR_MAG; i++)
113 len += sprintf(page + len, " %d", info->mag[i]);
114 len += sprintf(page + len, "\n");
115#endif
116 return len;
117}
118
119static int stsi_1_2_2(struct sysinfo_1_2_2 *info, char *page, int len)
120{
121 struct sysinfo_1_2_2_extension *ext;
122 int i;
123
124 if (stsi(info, 1, 2, 2) == -ENOSYS)
125 return len;
126 ext = (struct sysinfo_1_2_2_extension *)
127 ((unsigned long) info + info->acc_offset);
128
129 len += sprintf(page + len, "CPUs Total: %d\n",
130 info->cpus_total);
131 len += sprintf(page + len, "CPUs Configured: %d\n",
132 info->cpus_configured);
133 len += sprintf(page + len, "CPUs Standby: %d\n",
134 info->cpus_standby);
135 len += sprintf(page + len, "CPUs Reserved: %d\n",
136 info->cpus_reserved);
137
138 if (info->format == 1) {
139 /*
140 * Sigh 2. According to the specification the alternate
141 * capability field is a 32 bit floating point number
142 * if the higher order 8 bits are not zero. Printing
143 * a floating point number in the kernel is a no-no,
144 * always print the number as 32 bit unsigned integer.
145 * The user-space needs to know about the strange
146 * encoding of the alternate cpu capability.
147 */
148 len += sprintf(page + len, "Capability: %u %u\n",
149 info->capability, ext->alt_capability);
150 for (i = 2; i <= info->cpus_total; i++)
151 len += sprintf(page + len,
152 "Adjustment %02d-way: %u %u\n",
153 i, info->adjustment[i-2],
154 ext->alt_adjustment[i-2]);
155
156 } else {
157 len += sprintf(page + len, "Capability: %u\n",
158 info->capability);
159 for (i = 2; i <= info->cpus_total; i++)
160 len += sprintf(page + len,
161 "Adjustment %02d-way: %u\n",
162 i, info->adjustment[i-2]);
163 }
164
165 if (info->secondary_capability != 0)
166 len += sprintf(page + len, "Secondary Capability: %d\n",
167 info->secondary_capability);
168 return len;
169}
170
171static int stsi_2_2_2(struct sysinfo_2_2_2 *info, char *page, int len)
172{
173 if (stsi(info, 2, 2, 2) == -ENOSYS)
174 return len;
175
176 EBCASC(info->name, sizeof(info->name));
177
178 len += sprintf(page + len, "\n");
179 len += sprintf(page + len, "LPAR Number: %d\n",
180 info->lpar_number);
181
182 len += sprintf(page + len, "LPAR Characteristics: ");
183 if (info->characteristics & LPAR_CHAR_DEDICATED)
184 len += sprintf(page + len, "Dedicated ");
185 if (info->characteristics & LPAR_CHAR_SHARED)
186 len += sprintf(page + len, "Shared ");
187 if (info->characteristics & LPAR_CHAR_LIMITED)
188 len += sprintf(page + len, "Limited ");
189 len += sprintf(page + len, "\n");
190
191 len += sprintf(page + len, "LPAR Name: %-8.8s\n",
192 info->name);
193
194 len += sprintf(page + len, "LPAR Adjustment: %d\n",
195 info->caf);
196
197 len += sprintf(page + len, "LPAR CPUs Total: %d\n",
198 info->cpus_total);
199 len += sprintf(page + len, "LPAR CPUs Configured: %d\n",
200 info->cpus_configured);
201 len += sprintf(page + len, "LPAR CPUs Standby: %d\n",
202 info->cpus_standby);
203 len += sprintf(page + len, "LPAR CPUs Reserved: %d\n",
204 info->cpus_reserved);
205 len += sprintf(page + len, "LPAR CPUs Dedicated: %d\n",
206 info->cpus_dedicated);
207 len += sprintf(page + len, "LPAR CPUs Shared: %d\n",
208 info->cpus_shared);
209 return len;
210}
211
212static int stsi_3_2_2(struct sysinfo_3_2_2 *info, char *page, int len)
213{
214 int i;
215
216 if (stsi(info, 3, 2, 2) == -ENOSYS)
217 return len;
218 for (i = 0; i < info->count; i++) {
219 EBCASC(info->vm[i].name, sizeof(info->vm[i].name));
220 EBCASC(info->vm[i].cpi, sizeof(info->vm[i].cpi));
221 len += sprintf(page + len, "\n");
222 len += sprintf(page + len, "VM%02d Name: %-8.8s\n",
223 i, info->vm[i].name);
224 len += sprintf(page + len, "VM%02d Control Program: %-16.16s\n",
225 i, info->vm[i].cpi);
226
227 len += sprintf(page + len, "VM%02d Adjustment: %d\n",
228 i, info->vm[i].caf);
229
230 len += sprintf(page + len, "VM%02d CPUs Total: %d\n",
231 i, info->vm[i].cpus_total);
232 len += sprintf(page + len, "VM%02d CPUs Configured: %d\n",
233 i, info->vm[i].cpus_configured);
234 len += sprintf(page + len, "VM%02d CPUs Standby: %d\n",
235 i, info->vm[i].cpus_standby);
236 len += sprintf(page + len, "VM%02d CPUs Reserved: %d\n",
237 i, info->vm[i].cpus_reserved);
238 }
239 return len;
240}
241
242static int proc_read_sysinfo(char *page, char **start,
243 off_t off, int count,
244 int *eof, void *data)
245{
246 unsigned long info = get_zeroed_page(GFP_KERNEL);
247 int level, len;
248
249 if (!info)
250 return 0;
251
252 len = 0;
253 level = stsi_0();
254 if (level >= 1)
255 len = stsi_1_1_1((struct sysinfo_1_1_1 *) info, page, len);
256
257 if (level >= 1)
258 len = stsi_15_1_x((struct sysinfo_15_1_x *) info, page, len);
259
260 if (level >= 1)
261 len = stsi_1_2_2((struct sysinfo_1_2_2 *) info, page, len);
262
263 if (level >= 2)
264 len = stsi_2_2_2((struct sysinfo_2_2_2 *) info, page, len);
265
266 if (level >= 3)
267 len = stsi_3_2_2((struct sysinfo_3_2_2 *) info, page, len);
268
269 free_page(info);
270 return len;
271}
272
273static __init int create_proc_sysinfo(void)
274{
275 create_proc_read_entry("sysinfo", 0444, NULL,
276 proc_read_sysinfo, NULL);
277 return 0;
278}
279device_initcall(create_proc_sysinfo);
280
281/*
282 * Service levels interface.
283 */
284
285static DECLARE_RWSEM(service_level_sem);
286static LIST_HEAD(service_level_list);
287
288int register_service_level(struct service_level *slr)
289{
290 struct service_level *ptr;
291
292 down_write(&service_level_sem);
293 list_for_each_entry(ptr, &service_level_list, list)
294 if (ptr == slr) {
295 up_write(&service_level_sem);
296 return -EEXIST;
297 }
298 list_add_tail(&slr->list, &service_level_list);
299 up_write(&service_level_sem);
300 return 0;
301}
302EXPORT_SYMBOL(register_service_level);
303
304int unregister_service_level(struct service_level *slr)
305{
306 struct service_level *ptr, *next;
307 int rc = -ENOENT;
308
309 down_write(&service_level_sem);
310 list_for_each_entry_safe(ptr, next, &service_level_list, list) {
311 if (ptr != slr)
312 continue;
313 list_del(&ptr->list);
314 rc = 0;
315 break;
316 }
317 up_write(&service_level_sem);
318 return rc;
319}
320EXPORT_SYMBOL(unregister_service_level);
321
322static void *service_level_start(struct seq_file *m, loff_t *pos)
323{
324 down_read(&service_level_sem);
325 return seq_list_start(&service_level_list, *pos);
326}
327
328static void *service_level_next(struct seq_file *m, void *p, loff_t *pos)
329{
330 return seq_list_next(p, &service_level_list, pos);
331}
332
333static void service_level_stop(struct seq_file *m, void *p)
334{
335 up_read(&service_level_sem);
336}
337
338static int service_level_show(struct seq_file *m, void *p)
339{
340 struct service_level *slr;
341
342 slr = list_entry(p, struct service_level, list);
343 slr->seq_print(m, slr);
344 return 0;
345}
346
347static const struct seq_operations service_level_seq_ops = {
348 .start = service_level_start,
349 .next = service_level_next,
350 .stop = service_level_stop,
351 .show = service_level_show
352};
353
354static int service_level_open(struct inode *inode, struct file *file)
355{
356 return seq_open(file, &service_level_seq_ops);
357}
358
359static const struct file_operations service_level_ops = {
360 .open = service_level_open,
361 .read = seq_read,
362 .llseek = seq_lseek,
363 .release = seq_release
364};
365
366static void service_level_vm_print(struct seq_file *m,
367 struct service_level *slr)
368{
369 char *query_buffer, *str;
370
371 query_buffer = kmalloc(1024, GFP_KERNEL | GFP_DMA);
372 if (!query_buffer)
373 return;
374 cpcmd("QUERY CPLEVEL", query_buffer, 1024, NULL);
375 str = strchr(query_buffer, '\n');
376 if (str)
377 *str = 0;
378 seq_printf(m, "VM: %s\n", query_buffer);
379 kfree(query_buffer);
380}
381
382static struct service_level service_level_vm = {
383 .seq_print = service_level_vm_print
384};
385
386static __init int create_proc_service_level(void)
387{
388 proc_create("service_levels", 0, NULL, &service_level_ops);
389 if (MACHINE_IS_VM)
390 register_service_level(&service_level_vm);
391 return 0;
392}
393subsys_initcall(create_proc_service_level);
394
395/*
396 * Bogomips calculation based on cpu capability.
397 */
398int get_cpu_capability(unsigned int *capability)
399{
400 struct sysinfo_1_2_2 *info;
401 int rc;
402
403 info = (void *) get_zeroed_page(GFP_KERNEL);
404 if (!info)
405 return -ENOMEM;
406 rc = stsi(info, 1, 2, 2);
407 if (rc == -ENOSYS)
408 goto out;
409 rc = 0;
410 *capability = info->capability;
411out:
412 free_page((unsigned long) info);
413 return rc;
414}
415
416/*
417 * CPU capability might have changed. Therefore recalculate loops_per_jiffy.
418 */
419void s390_adjust_jiffies(void)
420{
421 struct sysinfo_1_2_2 *info;
422 const unsigned int fmil = 0x4b189680; /* 1e7 as 32-bit float. */
423 FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
424 FP_DECL_EX;
425 unsigned int capability;
426
427 info = (void *) get_zeroed_page(GFP_KERNEL);
428 if (!info)
429 return;
430
431 if (stsi(info, 1, 2, 2) != -ENOSYS) {
432 /*
433 * Major sigh. The cpu capability encoding is "special".
434 * If the first 9 bits of info->capability are 0 then it
435 * is a 32 bit unsigned integer in the range 0 .. 2^23.
436 * If the first 9 bits are != 0 then it is a 32 bit float.
437 * In addition a lower value indicates a proportionally
438 * higher cpu capacity. Bogomips are the other way round.
439 * To get to a halfway suitable number we divide 1e7
440 * by the cpu capability number. Yes, that means a floating
441 * point division .. math-emu here we come :-)
442 */
443 FP_UNPACK_SP(SA, &fmil);
444 if ((info->capability >> 23) == 0)
445 FP_FROM_INT_S(SB, info->capability, 32, int);
446 else
447 FP_UNPACK_SP(SB, &info->capability);
448 FP_DIV_S(SR, SA, SB);
449 FP_TO_INT_S(capability, SR, 32, 0);
450 } else
451 /*
452 * Really old machine without stsi block for basic
453 * cpu information. Report 42.0 bogomips.
454 */
455 capability = 42;
456 loops_per_jiffy = capability * (500000/HZ);
457 free_page((unsigned long) info);
458}
459
460/*
461 * calibrate the delay loop
462 */
463void __cpuinit calibrate_delay(void)
464{
465 s390_adjust_jiffies();
466 /* Print the good old Bogomips line .. */
467 printk(KERN_DEBUG "Calibrating delay loop (skipped)... "
468 "%lu.%02lu BogoMIPS preset\n", loops_per_jiffy/(500000/HZ),
469 (loops_per_jiffy/(5000/HZ)) % 100);
470}
1/*
2 * Copyright IBM Corp. 2001, 2009
3 * Author(s): Ulrich Weigand <Ulrich.Weigand@de.ibm.com>,
4 * Martin Schwidefsky <schwidefsky@de.ibm.com>,
5 */
6
7#include <linux/kernel.h>
8#include <linux/mm.h>
9#include <linux/proc_fs.h>
10#include <linux/seq_file.h>
11#include <linux/init.h>
12#include <linux/delay.h>
13#include <linux/module.h>
14#include <linux/slab.h>
15#include <asm/ebcdic.h>
16#include <asm/sysinfo.h>
17#include <asm/cpcmd.h>
18#include <asm/topology.h>
19
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
25int topology_max_mnest;
26
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 */
33int stsi(void *sysinfo, int fc, int sel1, int sel2)
34{
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;
51}
52EXPORT_SYMBOL(stsi);
53
54static void stsi_1_1_1(struct seq_file *m, struct sysinfo_1_1_1 *info)
55{
56 int i;
57
58 if (stsi(info, 1, 1, 1))
59 return;
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));
66 EBCASC(info->model_perm_cap, sizeof(info->model_perm_cap));
67 EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap));
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);
78 if (info->model[0] != '\0')
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",
84 info->model_capacity, info->model_cap_rating);
85 if (info->model_perm_cap_rating)
86 seq_printf(m, "Model Perm. Capacity: %-16.16s %08u\n",
87 info->model_perm_cap,
88 info->model_perm_cap_rating);
89 if (info->model_temp_cap_rating)
90 seq_printf(m, "Model Temp. Capacity: %-16.16s %08u\n",
91 info->model_temp_cap,
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);
99 if (info->cai) {
100 seq_printf(m, "Capacity Adj. Ind.: %d\n", info->cai);
101 seq_printf(m, "Capacity Ch. Reason: %d\n", info->ccr);
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 }
109 }
110}
111
112static void stsi_15_1_x(struct seq_file *m, struct sysinfo_15_1_x *info)
113{
114 int i;
115
116 seq_putc(m, '\n');
117 if (!MACHINE_HAS_TOPOLOGY)
118 return;
119 if (stsi(info, 15, 1, topology_max_mnest))
120 return;
121 seq_printf(m, "CPU Topology HW: ");
122 for (i = 0; i < TOPOLOGY_NR_MAG; i++)
123 seq_printf(m, " %d", info->mag[i]);
124 seq_putc(m, '\n');
125#ifdef CONFIG_SCHED_TOPOLOGY
126 store_topology(info);
127 seq_printf(m, "CPU Topology SW: ");
128 for (i = 0; i < TOPOLOGY_NR_MAG; i++)
129 seq_printf(m, " %d", info->mag[i]);
130 seq_putc(m, '\n');
131#endif
132}
133
134static void stsi_1_2_2(struct seq_file *m, struct sysinfo_1_2_2 *info)
135{
136 struct sysinfo_1_2_2_extension *ext;
137 int i;
138
139 if (stsi(info, 1, 2, 2))
140 return;
141 ext = (struct sysinfo_1_2_2_extension *)
142 ((unsigned long) info + info->acc_offset);
143 seq_printf(m, "CPUs Total: %d\n", info->cpus_total);
144 seq_printf(m, "CPUs Configured: %d\n", info->cpus_configured);
145 seq_printf(m, "CPUs Standby: %d\n", info->cpus_standby);
146 seq_printf(m, "CPUs Reserved: %d\n", info->cpus_reserved);
147 if (info->mt_installed) {
148 seq_printf(m, "CPUs G-MTID: %d\n", info->mt_gtid);
149 seq_printf(m, "CPUs S-MTID: %d\n", info->mt_stid);
150 }
151 /*
152 * Sigh 2. According to the specification the alternate
153 * capability field is a 32 bit floating point number
154 * if the higher order 8 bits are not zero. Printing
155 * a floating point number in the kernel is a no-no,
156 * always print the number as 32 bit unsigned integer.
157 * The user-space needs to know about the strange
158 * encoding of the alternate cpu capability.
159 */
160 seq_printf(m, "Capability: %u", info->capability);
161 if (info->format == 1)
162 seq_printf(m, " %u", ext->alt_capability);
163 seq_putc(m, '\n');
164 if (info->nominal_cap)
165 seq_printf(m, "Nominal Capability: %d\n", info->nominal_cap);
166 if (info->secondary_cap)
167 seq_printf(m, "Secondary Capability: %d\n", info->secondary_cap);
168 for (i = 2; i <= info->cpus_total; i++) {
169 seq_printf(m, "Adjustment %02d-way: %u",
170 i, info->adjustment[i-2]);
171 if (info->format == 1)
172 seq_printf(m, " %u", ext->alt_adjustment[i-2]);
173 seq_putc(m, '\n');
174 }
175}
176
177static void stsi_2_2_2(struct seq_file *m, struct sysinfo_2_2_2 *info)
178{
179 if (stsi(info, 2, 2, 2))
180 return;
181 EBCASC(info->name, sizeof(info->name));
182 seq_putc(m, '\n');
183 seq_printf(m, "LPAR Number: %d\n", info->lpar_number);
184 seq_printf(m, "LPAR Characteristics: ");
185 if (info->characteristics & LPAR_CHAR_DEDICATED)
186 seq_printf(m, "Dedicated ");
187 if (info->characteristics & LPAR_CHAR_SHARED)
188 seq_printf(m, "Shared ");
189 if (info->characteristics & LPAR_CHAR_LIMITED)
190 seq_printf(m, "Limited ");
191 seq_putc(m, '\n');
192 seq_printf(m, "LPAR Name: %-8.8s\n", info->name);
193 seq_printf(m, "LPAR Adjustment: %d\n", info->caf);
194 seq_printf(m, "LPAR CPUs Total: %d\n", info->cpus_total);
195 seq_printf(m, "LPAR CPUs Configured: %d\n", info->cpus_configured);
196 seq_printf(m, "LPAR CPUs Standby: %d\n", info->cpus_standby);
197 seq_printf(m, "LPAR CPUs Reserved: %d\n", info->cpus_reserved);
198 seq_printf(m, "LPAR CPUs Dedicated: %d\n", info->cpus_dedicated);
199 seq_printf(m, "LPAR CPUs Shared: %d\n", info->cpus_shared);
200 if (info->mt_installed) {
201 seq_printf(m, "LPAR CPUs G-MTID: %d\n", info->mt_gtid);
202 seq_printf(m, "LPAR CPUs S-MTID: %d\n", info->mt_stid);
203 seq_printf(m, "LPAR CPUs PS-MTID: %d\n", info->mt_psmtid);
204 }
205}
206
207static void print_ext_name(struct seq_file *m, int lvl,
208 struct sysinfo_3_2_2 *info)
209{
210 if (info->vm[lvl].ext_name_encoding == 0)
211 return;
212 if (info->ext_names[lvl][0] == 0)
213 return;
214 switch (info->vm[lvl].ext_name_encoding) {
215 case 1: /* EBCDIC */
216 EBCASC(info->ext_names[lvl], sizeof(info->ext_names[lvl]));
217 break;
218 case 2: /* UTF-8 */
219 break;
220 default:
221 return;
222 }
223 seq_printf(m, "VM%02d Extended Name: %-.256s\n", lvl,
224 info->ext_names[lvl]);
225}
226
227static void print_uuid(struct seq_file *m, int i, struct sysinfo_3_2_2 *info)
228{
229 if (!memcmp(&info->vm[i].uuid, &NULL_UUID_BE, sizeof(uuid_be)))
230 return;
231 seq_printf(m, "VM%02d UUID: %pUb\n", i, &info->vm[i].uuid);
232}
233
234static void stsi_3_2_2(struct seq_file *m, struct sysinfo_3_2_2 *info)
235{
236 int i;
237
238 if (stsi(info, 3, 2, 2))
239 return;
240 for (i = 0; i < info->count; i++) {
241 EBCASC(info->vm[i].name, sizeof(info->vm[i].name));
242 EBCASC(info->vm[i].cpi, sizeof(info->vm[i].cpi));
243 seq_putc(m, '\n');
244 seq_printf(m, "VM%02d Name: %-8.8s\n", i, info->vm[i].name);
245 seq_printf(m, "VM%02d Control Program: %-16.16s\n", i, info->vm[i].cpi);
246 seq_printf(m, "VM%02d Adjustment: %d\n", i, info->vm[i].caf);
247 seq_printf(m, "VM%02d CPUs Total: %d\n", i, info->vm[i].cpus_total);
248 seq_printf(m, "VM%02d CPUs Configured: %d\n", i, info->vm[i].cpus_configured);
249 seq_printf(m, "VM%02d CPUs Standby: %d\n", i, info->vm[i].cpus_standby);
250 seq_printf(m, "VM%02d CPUs Reserved: %d\n", i, info->vm[i].cpus_reserved);
251 print_ext_name(m, i, info);
252 print_uuid(m, i, info);
253 }
254}
255
256static int sysinfo_show(struct seq_file *m, void *v)
257{
258 void *info = (void *)get_zeroed_page(GFP_KERNEL);
259 int level;
260
261 if (!info)
262 return 0;
263 level = stsi(NULL, 0, 0, 0);
264 if (level >= 1)
265 stsi_1_1_1(m, info);
266 if (level >= 1)
267 stsi_15_1_x(m, info);
268 if (level >= 1)
269 stsi_1_2_2(m, info);
270 if (level >= 2)
271 stsi_2_2_2(m, info);
272 if (level >= 3)
273 stsi_3_2_2(m, info);
274 free_page((unsigned long)info);
275 return 0;
276}
277
278static int sysinfo_open(struct inode *inode, struct file *file)
279{
280 return single_open(file, sysinfo_show, NULL);
281}
282
283static const struct file_operations sysinfo_fops = {
284 .open = sysinfo_open,
285 .read = seq_read,
286 .llseek = seq_lseek,
287 .release = single_release,
288};
289
290static int __init sysinfo_create_proc(void)
291{
292 proc_create("sysinfo", 0444, NULL, &sysinfo_fops);
293 return 0;
294}
295device_initcall(sysinfo_create_proc);
296
297/*
298 * Service levels interface.
299 */
300
301static DECLARE_RWSEM(service_level_sem);
302static LIST_HEAD(service_level_list);
303
304int register_service_level(struct service_level *slr)
305{
306 struct service_level *ptr;
307
308 down_write(&service_level_sem);
309 list_for_each_entry(ptr, &service_level_list, list)
310 if (ptr == slr) {
311 up_write(&service_level_sem);
312 return -EEXIST;
313 }
314 list_add_tail(&slr->list, &service_level_list);
315 up_write(&service_level_sem);
316 return 0;
317}
318EXPORT_SYMBOL(register_service_level);
319
320int unregister_service_level(struct service_level *slr)
321{
322 struct service_level *ptr, *next;
323 int rc = -ENOENT;
324
325 down_write(&service_level_sem);
326 list_for_each_entry_safe(ptr, next, &service_level_list, list) {
327 if (ptr != slr)
328 continue;
329 list_del(&ptr->list);
330 rc = 0;
331 break;
332 }
333 up_write(&service_level_sem);
334 return rc;
335}
336EXPORT_SYMBOL(unregister_service_level);
337
338static void *service_level_start(struct seq_file *m, loff_t *pos)
339{
340 down_read(&service_level_sem);
341 return seq_list_start(&service_level_list, *pos);
342}
343
344static void *service_level_next(struct seq_file *m, void *p, loff_t *pos)
345{
346 return seq_list_next(p, &service_level_list, pos);
347}
348
349static void service_level_stop(struct seq_file *m, void *p)
350{
351 up_read(&service_level_sem);
352}
353
354static int service_level_show(struct seq_file *m, void *p)
355{
356 struct service_level *slr;
357
358 slr = list_entry(p, struct service_level, list);
359 slr->seq_print(m, slr);
360 return 0;
361}
362
363static const struct seq_operations service_level_seq_ops = {
364 .start = service_level_start,
365 .next = service_level_next,
366 .stop = service_level_stop,
367 .show = service_level_show
368};
369
370static int service_level_open(struct inode *inode, struct file *file)
371{
372 return seq_open(file, &service_level_seq_ops);
373}
374
375static const struct file_operations service_level_ops = {
376 .open = service_level_open,
377 .read = seq_read,
378 .llseek = seq_lseek,
379 .release = seq_release
380};
381
382static void service_level_vm_print(struct seq_file *m,
383 struct service_level *slr)
384{
385 char *query_buffer, *str;
386
387 query_buffer = kmalloc(1024, GFP_KERNEL | GFP_DMA);
388 if (!query_buffer)
389 return;
390 cpcmd("QUERY CPLEVEL", query_buffer, 1024, NULL);
391 str = strchr(query_buffer, '\n');
392 if (str)
393 *str = 0;
394 seq_printf(m, "VM: %s\n", query_buffer);
395 kfree(query_buffer);
396}
397
398static struct service_level service_level_vm = {
399 .seq_print = service_level_vm_print
400};
401
402static __init int create_proc_service_level(void)
403{
404 proc_create("service_levels", 0, NULL, &service_level_ops);
405 if (MACHINE_IS_VM)
406 register_service_level(&service_level_vm);
407 return 0;
408}
409subsys_initcall(create_proc_service_level);
410
411/*
412 * CPU capability might have changed. Therefore recalculate loops_per_jiffy.
413 */
414void s390_adjust_jiffies(void)
415{
416 struct sysinfo_1_2_2 *info;
417 const unsigned int fmil = 0x4b189680; /* 1e7 as 32-bit float. */
418 FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
419 FP_DECL_EX;
420 unsigned int capability;
421
422 info = (void *) get_zeroed_page(GFP_KERNEL);
423 if (!info)
424 return;
425
426 if (stsi(info, 1, 2, 2) == 0) {
427 /*
428 * Major sigh. The cpu capability encoding is "special".
429 * If the first 9 bits of info->capability are 0 then it
430 * is a 32 bit unsigned integer in the range 0 .. 2^23.
431 * If the first 9 bits are != 0 then it is a 32 bit float.
432 * In addition a lower value indicates a proportionally
433 * higher cpu capacity. Bogomips are the other way round.
434 * To get to a halfway suitable number we divide 1e7
435 * by the cpu capability number. Yes, that means a floating
436 * point division .. math-emu here we come :-)
437 */
438 FP_UNPACK_SP(SA, &fmil);
439 if ((info->capability >> 23) == 0)
440 FP_FROM_INT_S(SB, (long) info->capability, 64, long);
441 else
442 FP_UNPACK_SP(SB, &info->capability);
443 FP_DIV_S(SR, SA, SB);
444 FP_TO_INT_S(capability, SR, 32, 0);
445 } else
446 /*
447 * Really old machine without stsi block for basic
448 * cpu information. Report 42.0 bogomips.
449 */
450 capability = 42;
451 loops_per_jiffy = capability * (500000/HZ);
452 free_page((unsigned long) info);
453}
454
455/*
456 * calibrate the delay loop
457 */
458void calibrate_delay(void)
459{
460 s390_adjust_jiffies();
461 /* Print the good old Bogomips line .. */
462 printk(KERN_DEBUG "Calibrating delay loop (skipped)... "
463 "%lu.%02lu BogoMIPS preset\n", loops_per_jiffy/(500000/HZ),
464 (loops_per_jiffy/(5000/HZ)) % 100);
465}