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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
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
29
30
31
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
72
73
74
75
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 static int max_mnest;
115 int i, rc;
116
117 seq_putc(m, '\n');
118 if (!MACHINE_HAS_TOPOLOGY)
119 return;
120 if (stsi(info, 15, 1, topology_max_mnest))
121 return;
122 seq_printf(m, "CPU Topology HW: ");
123 for (i = 0; i < TOPOLOGY_NR_MAG; i++)
124 seq_printf(m, " %d", info->mag[i]);
125 seq_putc(m, '\n');
126#ifdef CONFIG_SCHED_MC
127 store_topology(info);
128 seq_printf(m, "CPU Topology SW: ");
129 for (i = 0; i < TOPOLOGY_NR_MAG; i++)
130 seq_printf(m, " %d", info->mag[i]);
131 seq_putc(m, '\n');
132#endif
133}
134
135static void stsi_1_2_2(struct seq_file *m, struct sysinfo_1_2_2 *info)
136{
137 struct sysinfo_1_2_2_extension *ext;
138 int i;
139
140 if (stsi(info, 1, 2, 2))
141 return;
142 ext = (struct sysinfo_1_2_2_extension *)
143 ((unsigned long) info + info->acc_offset);
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);
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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');
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);
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');
171 }
172}
173
174static void stsi_2_2_2(struct seq_file *m, struct sysinfo_2_2_2 *info)
175{
176 if (stsi(info, 2, 2, 2))
177 return;
178 EBCASC(info->name, sizeof(info->name));
179 seq_putc(m, '\n');
180 seq_printf(m, "LPAR Number: %d\n", info->lpar_number);
181 seq_printf(m, "LPAR Characteristics: ");
182 if (info->characteristics & LPAR_CHAR_DEDICATED)
183 seq_printf(m, "Dedicated ");
184 if (info->characteristics & LPAR_CHAR_SHARED)
185 seq_printf(m, "Shared ");
186 if (info->characteristics & LPAR_CHAR_LIMITED)
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);
197}
198
199static void stsi_3_2_2(struct seq_file *m, struct sysinfo_3_2_2 *info)
200{
201 int i;
202
203 if (stsi(info, 3, 2, 2))
204 return;
205 for (i = 0; i < info->count; i++) {
206 EBCASC(info->vm[i].name, sizeof(info->vm[i].name));
207 EBCASC(info->vm[i].cpi, sizeof(info->vm[i].cpi));
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);
216 }
217}
218
219static int sysinfo_show(struct seq_file *m, void *v)
220{
221 void *info = (void *)get_zeroed_page(GFP_KERNEL);
222 int level;
223
224 if (!info)
225 return 0;
226 level = stsi(NULL, 0, 0, 0);
227 if (level >= 1)
228 stsi_1_1_1(m, info);
229 if (level >= 1)
230 stsi_15_1_x(m, info);
231 if (level >= 1)
232 stsi_1_2_2(m, info);
233 if (level >= 2)
234 stsi_2_2_2(m, info);
235 if (level >= 3)
236 stsi_3_2_2(m, info);
237 free_page((unsigned long)info);
238 return 0;
239}
240
241static int sysinfo_open(struct inode *inode, struct file *file)
242{
243 return single_open(file, sysinfo_show, NULL);
244}
245
246static const struct file_operations sysinfo_fops = {
247 .open = sysinfo_open,
248 .read = seq_read,
249 .llseek = seq_lseek,
250 .release = single_release,
251};
252
253static int __init sysinfo_create_proc(void)
254{
255 proc_create("sysinfo", 0444, NULL, &sysinfo_fops);
256 return 0;
257}
258device_initcall(sysinfo_create_proc);
259
260
261
262
263
264static DECLARE_RWSEM(service_level_sem);
265static LIST_HEAD(service_level_list);
266
267int 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}
281EXPORT_SYMBOL(register_service_level);
282
283int 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}
299EXPORT_SYMBOL(unregister_service_level);
300
301static 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
307static 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
312static void service_level_stop(struct seq_file *m, void *p)
313{
314 up_read(&service_level_sem);
315}
316
317static 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
326static 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
333static int service_level_open(struct inode *inode, struct file *file)
334{
335 return seq_open(file, &service_level_seq_ops);
336}
337
338static 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
345static 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
361static struct service_level service_level_vm = {
362 .seq_print = service_level_vm_print
363};
364
365static __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}
372subsys_initcall(create_proc_service_level);
373
374
375
376
377void s390_adjust_jiffies(void)
378{
379 struct sysinfo_1_2_2 *info;
380 const unsigned int fmil = 0x4b189680;
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
389 if (stsi(info, 1, 2, 2) == 0) {
390
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393
394
395
396
397
398
399
400
401 FP_UNPACK_SP(SA, &fmil);
402 if ((info->capability >> 23) == 0)
403 FP_FROM_INT_S(SB, (long) info->capability, 64, long);
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
411
412
413 capability = 42;
414 loops_per_jiffy = capability * (500000/HZ);
415 free_page((unsigned long) info);
416}
417
418
419
420
421void calibrate_delay(void)
422{
423 s390_adjust_jiffies();
424
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}
429