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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
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 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);
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');
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 * Service levels interface.
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 * CPU capability might have changed. Therefore recalculate loops_per_jiffy.
376 */
377void 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
389 if (stsi(info, 1, 2, 2) == 0) {
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)
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 * 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 */
421void calibrate_delay(void)
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}
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#include <asm/fpu/api.h>
20
21int topology_max_mnest;
22
23static inline int __stsi(void *sysinfo, int fc, int sel1, int sel2, int *lvl)
24{
25 register int r0 asm("0") = (fc << 28) | sel1;
26 register int r1 asm("1") = sel2;
27 int rc = 0;
28
29 asm volatile(
30 " stsi 0(%3)\n"
31 "0: jz 2f\n"
32 "1: lhi %1,%4\n"
33 "2:\n"
34 EX_TABLE(0b, 1b)
35 : "+d" (r0), "+d" (rc)
36 : "d" (r1), "a" (sysinfo), "K" (-EOPNOTSUPP)
37 : "cc", "memory");
38 *lvl = ((unsigned int) r0) >> 28;
39 return rc;
40}
41
42/*
43 * stsi - store system information
44 *
45 * Returns the current configuration level if function code 0 was specified.
46 * Otherwise returns 0 on success or a negative value on error.
47 */
48int stsi(void *sysinfo, int fc, int sel1, int sel2)
49{
50 int lvl, rc;
51
52 rc = __stsi(sysinfo, fc, sel1, sel2, &lvl);
53 if (rc)
54 return rc;
55 return fc ? 0 : lvl;
56}
57EXPORT_SYMBOL(stsi);
58
59static bool convert_ext_name(unsigned char encoding, char *name, size_t len)
60{
61 switch (encoding) {
62 case 1: /* EBCDIC */
63 EBCASC(name, len);
64 break;
65 case 2: /* UTF-8 */
66 break;
67 default:
68 return false;
69 }
70 return true;
71}
72
73static void stsi_1_1_1(struct seq_file *m, struct sysinfo_1_1_1 *info)
74{
75 int i;
76
77 if (stsi(info, 1, 1, 1))
78 return;
79 EBCASC(info->manufacturer, sizeof(info->manufacturer));
80 EBCASC(info->type, sizeof(info->type));
81 EBCASC(info->model, sizeof(info->model));
82 EBCASC(info->sequence, sizeof(info->sequence));
83 EBCASC(info->plant, sizeof(info->plant));
84 EBCASC(info->model_capacity, sizeof(info->model_capacity));
85 EBCASC(info->model_perm_cap, sizeof(info->model_perm_cap));
86 EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap));
87 seq_printf(m, "Manufacturer: %-16.16s\n", info->manufacturer);
88 seq_printf(m, "Type: %-4.4s\n", info->type);
89 /*
90 * Sigh: the model field has been renamed with System z9
91 * to model_capacity and a new model field has been added
92 * after the plant field. To avoid confusing older programs
93 * the "Model:" prints "model_capacity model" or just
94 * "model_capacity" if the model string is empty .
95 */
96 seq_printf(m, "Model: %-16.16s", info->model_capacity);
97 if (info->model[0] != '\0')
98 seq_printf(m, " %-16.16s", info->model);
99 seq_putc(m, '\n');
100 seq_printf(m, "Sequence Code: %-16.16s\n", info->sequence);
101 seq_printf(m, "Plant: %-4.4s\n", info->plant);
102 seq_printf(m, "Model Capacity: %-16.16s %08u\n",
103 info->model_capacity, info->model_cap_rating);
104 if (info->model_perm_cap_rating)
105 seq_printf(m, "Model Perm. Capacity: %-16.16s %08u\n",
106 info->model_perm_cap,
107 info->model_perm_cap_rating);
108 if (info->model_temp_cap_rating)
109 seq_printf(m, "Model Temp. Capacity: %-16.16s %08u\n",
110 info->model_temp_cap,
111 info->model_temp_cap_rating);
112 if (info->ncr)
113 seq_printf(m, "Nominal Cap. Rating: %08u\n", info->ncr);
114 if (info->npr)
115 seq_printf(m, "Nominal Perm. Rating: %08u\n", info->npr);
116 if (info->ntr)
117 seq_printf(m, "Nominal Temp. Rating: %08u\n", info->ntr);
118 if (info->cai) {
119 seq_printf(m, "Capacity Adj. Ind.: %d\n", info->cai);
120 seq_printf(m, "Capacity Ch. Reason: %d\n", info->ccr);
121 seq_printf(m, "Capacity Transient: %d\n", info->t);
122 }
123 if (info->p) {
124 for (i = 1; i <= ARRAY_SIZE(info->typepct); i++) {
125 seq_printf(m, "Type %d Percentage: %d\n",
126 i, info->typepct[i - 1]);
127 }
128 }
129}
130
131static void stsi_15_1_x(struct seq_file *m, struct sysinfo_15_1_x *info)
132{
133 int i;
134
135 seq_putc(m, '\n');
136 if (!MACHINE_HAS_TOPOLOGY)
137 return;
138 if (stsi(info, 15, 1, topology_max_mnest))
139 return;
140 seq_printf(m, "CPU Topology HW: ");
141 for (i = 0; i < TOPOLOGY_NR_MAG; i++)
142 seq_printf(m, " %d", info->mag[i]);
143 seq_putc(m, '\n');
144#ifdef CONFIG_SCHED_TOPOLOGY
145 store_topology(info);
146 seq_printf(m, "CPU Topology SW: ");
147 for (i = 0; i < TOPOLOGY_NR_MAG; i++)
148 seq_printf(m, " %d", info->mag[i]);
149 seq_putc(m, '\n');
150#endif
151}
152
153static void stsi_1_2_2(struct seq_file *m, struct sysinfo_1_2_2 *info)
154{
155 struct sysinfo_1_2_2_extension *ext;
156 int i;
157
158 if (stsi(info, 1, 2, 2))
159 return;
160 ext = (struct sysinfo_1_2_2_extension *)
161 ((unsigned long) info + info->acc_offset);
162 seq_printf(m, "CPUs Total: %d\n", info->cpus_total);
163 seq_printf(m, "CPUs Configured: %d\n", info->cpus_configured);
164 seq_printf(m, "CPUs Standby: %d\n", info->cpus_standby);
165 seq_printf(m, "CPUs Reserved: %d\n", info->cpus_reserved);
166 if (info->mt_installed) {
167 seq_printf(m, "CPUs G-MTID: %d\n", info->mt_gtid);
168 seq_printf(m, "CPUs S-MTID: %d\n", info->mt_stid);
169 }
170 /*
171 * Sigh 2. According to the specification the alternate
172 * capability field is a 32 bit floating point number
173 * if the higher order 8 bits are not zero. Printing
174 * a floating point number in the kernel is a no-no,
175 * always print the number as 32 bit unsigned integer.
176 * The user-space needs to know about the strange
177 * encoding of the alternate cpu capability.
178 */
179 seq_printf(m, "Capability: %u", info->capability);
180 if (info->format == 1)
181 seq_printf(m, " %u", ext->alt_capability);
182 seq_putc(m, '\n');
183 if (info->nominal_cap)
184 seq_printf(m, "Nominal Capability: %d\n", info->nominal_cap);
185 if (info->secondary_cap)
186 seq_printf(m, "Secondary Capability: %d\n", info->secondary_cap);
187 for (i = 2; i <= info->cpus_total; i++) {
188 seq_printf(m, "Adjustment %02d-way: %u",
189 i, info->adjustment[i-2]);
190 if (info->format == 1)
191 seq_printf(m, " %u", ext->alt_adjustment[i-2]);
192 seq_putc(m, '\n');
193 }
194}
195
196static void stsi_2_2_2(struct seq_file *m, struct sysinfo_2_2_2 *info)
197{
198 if (stsi(info, 2, 2, 2))
199 return;
200 EBCASC(info->name, sizeof(info->name));
201 seq_putc(m, '\n');
202 seq_printf(m, "LPAR Number: %d\n", info->lpar_number);
203 seq_printf(m, "LPAR Characteristics: ");
204 if (info->characteristics & LPAR_CHAR_DEDICATED)
205 seq_printf(m, "Dedicated ");
206 if (info->characteristics & LPAR_CHAR_SHARED)
207 seq_printf(m, "Shared ");
208 if (info->characteristics & LPAR_CHAR_LIMITED)
209 seq_printf(m, "Limited ");
210 seq_putc(m, '\n');
211 seq_printf(m, "LPAR Name: %-8.8s\n", info->name);
212 seq_printf(m, "LPAR Adjustment: %d\n", info->caf);
213 seq_printf(m, "LPAR CPUs Total: %d\n", info->cpus_total);
214 seq_printf(m, "LPAR CPUs Configured: %d\n", info->cpus_configured);
215 seq_printf(m, "LPAR CPUs Standby: %d\n", info->cpus_standby);
216 seq_printf(m, "LPAR CPUs Reserved: %d\n", info->cpus_reserved);
217 seq_printf(m, "LPAR CPUs Dedicated: %d\n", info->cpus_dedicated);
218 seq_printf(m, "LPAR CPUs Shared: %d\n", info->cpus_shared);
219 if (info->mt_installed) {
220 seq_printf(m, "LPAR CPUs G-MTID: %d\n", info->mt_gtid);
221 seq_printf(m, "LPAR CPUs S-MTID: %d\n", info->mt_stid);
222 seq_printf(m, "LPAR CPUs PS-MTID: %d\n", info->mt_psmtid);
223 }
224 if (convert_ext_name(info->vsne, info->ext_name, sizeof(info->ext_name))) {
225 seq_printf(m, "LPAR Extended Name: %-.256s\n", info->ext_name);
226 seq_printf(m, "LPAR UUID: %pUb\n", &info->uuid);
227 }
228}
229
230static void print_ext_name(struct seq_file *m, int lvl,
231 struct sysinfo_3_2_2 *info)
232{
233 size_t len = sizeof(info->ext_names[lvl]);
234
235 if (!convert_ext_name(info->vm[lvl].evmne, info->ext_names[lvl], len))
236 return;
237 seq_printf(m, "VM%02d Extended Name: %-.256s\n", lvl,
238 info->ext_names[lvl]);
239}
240
241static void print_uuid(struct seq_file *m, int i, struct sysinfo_3_2_2 *info)
242{
243 if (!memcmp(&info->vm[i].uuid, &NULL_UUID_BE, sizeof(uuid_be)))
244 return;
245 seq_printf(m, "VM%02d UUID: %pUb\n", i, &info->vm[i].uuid);
246}
247
248static void stsi_3_2_2(struct seq_file *m, struct sysinfo_3_2_2 *info)
249{
250 int i;
251
252 if (stsi(info, 3, 2, 2))
253 return;
254 for (i = 0; i < info->count; i++) {
255 EBCASC(info->vm[i].name, sizeof(info->vm[i].name));
256 EBCASC(info->vm[i].cpi, sizeof(info->vm[i].cpi));
257 seq_putc(m, '\n');
258 seq_printf(m, "VM%02d Name: %-8.8s\n", i, info->vm[i].name);
259 seq_printf(m, "VM%02d Control Program: %-16.16s\n", i, info->vm[i].cpi);
260 seq_printf(m, "VM%02d Adjustment: %d\n", i, info->vm[i].caf);
261 seq_printf(m, "VM%02d CPUs Total: %d\n", i, info->vm[i].cpus_total);
262 seq_printf(m, "VM%02d CPUs Configured: %d\n", i, info->vm[i].cpus_configured);
263 seq_printf(m, "VM%02d CPUs Standby: %d\n", i, info->vm[i].cpus_standby);
264 seq_printf(m, "VM%02d CPUs Reserved: %d\n", i, info->vm[i].cpus_reserved);
265 print_ext_name(m, i, info);
266 print_uuid(m, i, info);
267 }
268}
269
270static int sysinfo_show(struct seq_file *m, void *v)
271{
272 void *info = (void *)get_zeroed_page(GFP_KERNEL);
273 int level;
274
275 if (!info)
276 return 0;
277 level = stsi(NULL, 0, 0, 0);
278 if (level >= 1)
279 stsi_1_1_1(m, info);
280 if (level >= 1)
281 stsi_15_1_x(m, info);
282 if (level >= 1)
283 stsi_1_2_2(m, info);
284 if (level >= 2)
285 stsi_2_2_2(m, info);
286 if (level >= 3)
287 stsi_3_2_2(m, info);
288 free_page((unsigned long)info);
289 return 0;
290}
291
292static int sysinfo_open(struct inode *inode, struct file *file)
293{
294 return single_open(file, sysinfo_show, NULL);
295}
296
297static const struct file_operations sysinfo_fops = {
298 .open = sysinfo_open,
299 .read = seq_read,
300 .llseek = seq_lseek,
301 .release = single_release,
302};
303
304static int __init sysinfo_create_proc(void)
305{
306 proc_create("sysinfo", 0444, NULL, &sysinfo_fops);
307 return 0;
308}
309device_initcall(sysinfo_create_proc);
310
311/*
312 * Service levels interface.
313 */
314
315static DECLARE_RWSEM(service_level_sem);
316static LIST_HEAD(service_level_list);
317
318int register_service_level(struct service_level *slr)
319{
320 struct service_level *ptr;
321
322 down_write(&service_level_sem);
323 list_for_each_entry(ptr, &service_level_list, list)
324 if (ptr == slr) {
325 up_write(&service_level_sem);
326 return -EEXIST;
327 }
328 list_add_tail(&slr->list, &service_level_list);
329 up_write(&service_level_sem);
330 return 0;
331}
332EXPORT_SYMBOL(register_service_level);
333
334int unregister_service_level(struct service_level *slr)
335{
336 struct service_level *ptr, *next;
337 int rc = -ENOENT;
338
339 down_write(&service_level_sem);
340 list_for_each_entry_safe(ptr, next, &service_level_list, list) {
341 if (ptr != slr)
342 continue;
343 list_del(&ptr->list);
344 rc = 0;
345 break;
346 }
347 up_write(&service_level_sem);
348 return rc;
349}
350EXPORT_SYMBOL(unregister_service_level);
351
352static void *service_level_start(struct seq_file *m, loff_t *pos)
353{
354 down_read(&service_level_sem);
355 return seq_list_start(&service_level_list, *pos);
356}
357
358static void *service_level_next(struct seq_file *m, void *p, loff_t *pos)
359{
360 return seq_list_next(p, &service_level_list, pos);
361}
362
363static void service_level_stop(struct seq_file *m, void *p)
364{
365 up_read(&service_level_sem);
366}
367
368static int service_level_show(struct seq_file *m, void *p)
369{
370 struct service_level *slr;
371
372 slr = list_entry(p, struct service_level, list);
373 slr->seq_print(m, slr);
374 return 0;
375}
376
377static const struct seq_operations service_level_seq_ops = {
378 .start = service_level_start,
379 .next = service_level_next,
380 .stop = service_level_stop,
381 .show = service_level_show
382};
383
384static int service_level_open(struct inode *inode, struct file *file)
385{
386 return seq_open(file, &service_level_seq_ops);
387}
388
389static const struct file_operations service_level_ops = {
390 .open = service_level_open,
391 .read = seq_read,
392 .llseek = seq_lseek,
393 .release = seq_release
394};
395
396static void service_level_vm_print(struct seq_file *m,
397 struct service_level *slr)
398{
399 char *query_buffer, *str;
400
401 query_buffer = kmalloc(1024, GFP_KERNEL | GFP_DMA);
402 if (!query_buffer)
403 return;
404 cpcmd("QUERY CPLEVEL", query_buffer, 1024, NULL);
405 str = strchr(query_buffer, '\n');
406 if (str)
407 *str = 0;
408 seq_printf(m, "VM: %s\n", query_buffer);
409 kfree(query_buffer);
410}
411
412static struct service_level service_level_vm = {
413 .seq_print = service_level_vm_print
414};
415
416static __init int create_proc_service_level(void)
417{
418 proc_create("service_levels", 0, NULL, &service_level_ops);
419 if (MACHINE_IS_VM)
420 register_service_level(&service_level_vm);
421 return 0;
422}
423subsys_initcall(create_proc_service_level);
424
425/*
426 * CPU capability might have changed. Therefore recalculate loops_per_jiffy.
427 */
428void s390_adjust_jiffies(void)
429{
430 struct sysinfo_1_2_2 *info;
431 unsigned long capability;
432 struct kernel_fpu fpu;
433
434 info = (void *) get_zeroed_page(GFP_KERNEL);
435 if (!info)
436 return;
437
438 if (stsi(info, 1, 2, 2) == 0) {
439 /*
440 * Major sigh. The cpu capability encoding is "special".
441 * If the first 9 bits of info->capability are 0 then it
442 * is a 32 bit unsigned integer in the range 0 .. 2^23.
443 * If the first 9 bits are != 0 then it is a 32 bit float.
444 * In addition a lower value indicates a proportionally
445 * higher cpu capacity. Bogomips are the other way round.
446 * To get to a halfway suitable number we divide 1e7
447 * by the cpu capability number. Yes, that means a floating
448 * point division ..
449 */
450 kernel_fpu_begin(&fpu, KERNEL_FPR);
451 asm volatile(
452 " sfpc %3\n"
453 " l %0,%1\n"
454 " tmlh %0,0xff80\n"
455 " jnz 0f\n"
456 " cefbr %%f2,%0\n"
457 " j 1f\n"
458 "0: le %%f2,%1\n"
459 "1: cefbr %%f0,%2\n"
460 " debr %%f0,%%f2\n"
461 " cgebr %0,5,%%f0\n"
462 : "=&d" (capability)
463 : "Q" (info->capability), "d" (10000000), "d" (0)
464 : "cc"
465 );
466 kernel_fpu_end(&fpu, KERNEL_FPR);
467 } else
468 /*
469 * Really old machine without stsi block for basic
470 * cpu information. Report 42.0 bogomips.
471 */
472 capability = 42;
473 loops_per_jiffy = capability * (500000/HZ);
474 free_page((unsigned long) info);
475}
476
477/*
478 * calibrate the delay loop
479 */
480void calibrate_delay(void)
481{
482 s390_adjust_jiffies();
483 /* Print the good old Bogomips line .. */
484 printk(KERN_DEBUG "Calibrating delay loop (skipped)... "
485 "%lu.%02lu BogoMIPS preset\n", loops_per_jiffy/(500000/HZ),
486 (loops_per_jiffy/(5000/HZ)) % 100);
487}