Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * drivers/s390/sysinfo.c | |
3 | * | |
4 | * Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation | |
5 | * Author(s): Ulrich Weigand (Ulrich.Weigand@de.ibm.com) | |
6 | */ | |
7 | ||
1da177e4 LT |
8 | #include <linux/kernel.h> |
9 | #include <linux/mm.h> | |
10 | #include <linux/proc_fs.h> | |
11 | #include <linux/init.h> | |
12 | #include <asm/ebcdic.h> | |
13 | ||
0fee644a | 14 | struct sysinfo_1_1_1 { |
1da177e4 LT |
15 | char reserved_0[32]; |
16 | char manufacturer[16]; | |
17 | char type[4]; | |
18 | char reserved_1[12]; | |
0fee644a | 19 | char model_capacity[16]; |
1da177e4 LT |
20 | char sequence[16]; |
21 | char plant[4]; | |
0fee644a | 22 | char model[16]; |
1da177e4 LT |
23 | }; |
24 | ||
0fee644a | 25 | struct sysinfo_1_2_1 { |
1da177e4 LT |
26 | char reserved_0[80]; |
27 | char sequence[16]; | |
28 | char plant[4]; | |
29 | char reserved_1[2]; | |
30 | unsigned short cpu_address; | |
31 | }; | |
32 | ||
0fee644a MS |
33 | struct sysinfo_1_2_2 { |
34 | char format; | |
35 | char reserved_0[1]; | |
36 | unsigned short acc_offset; | |
37 | char reserved_1[24]; | |
38 | unsigned int secondary_capability; | |
1da177e4 LT |
39 | unsigned int capability; |
40 | unsigned short cpus_total; | |
41 | unsigned short cpus_configured; | |
42 | unsigned short cpus_standby; | |
43 | unsigned short cpus_reserved; | |
44 | unsigned short adjustment[0]; | |
45 | }; | |
46 | ||
0fee644a MS |
47 | struct sysinfo_1_2_2_extension { |
48 | unsigned int alt_capability; | |
49 | unsigned short alt_adjustment[0]; | |
50 | }; | |
51 | ||
52 | struct sysinfo_2_2_1 { | |
1da177e4 LT |
53 | char reserved_0[80]; |
54 | char sequence[16]; | |
55 | char plant[4]; | |
56 | unsigned short cpu_id; | |
57 | unsigned short cpu_address; | |
58 | }; | |
59 | ||
0fee644a | 60 | struct sysinfo_2_2_2 { |
1da177e4 LT |
61 | char reserved_0[32]; |
62 | unsigned short lpar_number; | |
63 | char reserved_1; | |
64 | unsigned char characteristics; | |
1da177e4 LT |
65 | unsigned short cpus_total; |
66 | unsigned short cpus_configured; | |
67 | unsigned short cpus_standby; | |
68 | unsigned short cpus_reserved; | |
69 | char name[8]; | |
70 | unsigned int caf; | |
71 | char reserved_2[16]; | |
72 | unsigned short cpus_dedicated; | |
73 | unsigned short cpus_shared; | |
74 | }; | |
75 | ||
0fee644a MS |
76 | #define LPAR_CHAR_DEDICATED (1 << 7) |
77 | #define LPAR_CHAR_SHARED (1 << 6) | |
78 | #define LPAR_CHAR_LIMITED (1 << 5) | |
79 | ||
80 | struct sysinfo_3_2_2 { | |
1da177e4 LT |
81 | char reserved_0[31]; |
82 | unsigned char count; | |
0fee644a | 83 | struct { |
1da177e4 LT |
84 | char reserved_0[4]; |
85 | unsigned short cpus_total; | |
86 | unsigned short cpus_configured; | |
87 | unsigned short cpus_standby; | |
88 | unsigned short cpus_reserved; | |
89 | char name[8]; | |
90 | unsigned int caf; | |
91 | char cpi[16]; | |
92 | char reserved_1[24]; | |
93 | ||
94 | } vm[8]; | |
95 | }; | |
96 | ||
0fee644a | 97 | static inline int stsi(void *sysinfo, int fc, int sel1, int sel2) |
1da177e4 | 98 | { |
0fee644a MS |
99 | register int r0 asm("0") = (fc << 28) | sel1; |
100 | register int r1 asm("1") = sel2; | |
101 | ||
102 | asm volatile( | |
103 | " stsi 0(%2)\n" | |
104 | "0: jz 2f\n" | |
105 | "1: lhi %0,%3\n" | |
106 | "2:\n" | |
107 | EX_TABLE(0b,1b) | |
108 | : "+d" (r0) : "d" (r1), "a" (sysinfo), "K" (-ENOSYS) | |
109 | : "cc", "memory" ); | |
110 | return r0; | |
1da177e4 LT |
111 | } |
112 | ||
0fee644a | 113 | static inline int stsi_0(void) |
1da177e4 LT |
114 | { |
115 | int rc = stsi (NULL, 0, 0, 0); | |
0fee644a | 116 | return rc == -ENOSYS ? rc : (((unsigned int) rc) >> 28); |
1da177e4 LT |
117 | } |
118 | ||
0fee644a | 119 | static int stsi_1_1_1(struct sysinfo_1_1_1 *info, char *page, int len) |
1da177e4 | 120 | { |
0fee644a MS |
121 | if (stsi(info, 1, 1, 1) == -ENOSYS) |
122 | return len; | |
123 | ||
124 | EBCASC(info->manufacturer, sizeof(info->manufacturer)); | |
125 | EBCASC(info->type, sizeof(info->type)); | |
126 | EBCASC(info->model, sizeof(info->model)); | |
127 | EBCASC(info->sequence, sizeof(info->sequence)); | |
128 | EBCASC(info->plant, sizeof(info->plant)); | |
129 | EBCASC(info->model_capacity, sizeof(info->model_capacity)); | |
130 | len += sprintf(page + len, "Manufacturer: %-16.16s\n", | |
131 | info->manufacturer); | |
132 | len += sprintf(page + len, "Type: %-4.4s\n", | |
133 | info->type); | |
134 | if (info->model[0] != '\0') | |
135 | /* | |
136 | * Sigh: the model field has been renamed with System z9 | |
137 | * to model_capacity and a new model field has been added | |
138 | * after the plant field. To avoid confusing older programs | |
139 | * the "Model:" prints "model_capacity model" or just | |
140 | * "model_capacity" if the model string is empty . | |
141 | */ | |
142 | len += sprintf(page + len, | |
143 | "Model: %-16.16s %-16.16s\n", | |
144 | info->model_capacity, info->model); | |
145 | else | |
146 | len += sprintf(page + len, "Model: %-16.16s\n", | |
147 | info->model_capacity); | |
148 | len += sprintf(page + len, "Sequence Code: %-16.16s\n", | |
149 | info->sequence); | |
150 | len += sprintf(page + len, "Plant: %-4.4s\n", | |
151 | info->plant); | |
152 | len += sprintf(page + len, "Model Capacity: %-16.16s\n", | |
153 | info->model_capacity); | |
154 | return len; | |
1da177e4 LT |
155 | } |
156 | ||
0fee644a MS |
157 | #if 0 /* Currently unused */ |
158 | static int stsi_1_2_1(struct sysinfo_1_2_1 *info, char *page, int len) | |
1da177e4 | 159 | { |
0fee644a MS |
160 | if (stsi(info, 1, 2, 1) == -ENOSYS) |
161 | return len; | |
162 | ||
163 | len += sprintf(page + len, "\n"); | |
164 | EBCASC(info->sequence, sizeof(info->sequence)); | |
165 | EBCASC(info->plant, sizeof(info->plant)); | |
166 | len += sprintf(page + len, "Sequence Code of CPU: %-16.16s\n", | |
167 | info->sequence); | |
168 | len += sprintf(page + len, "Plant of CPU: %-16.16s\n", | |
169 | info->plant); | |
170 | return len; | |
1da177e4 | 171 | } |
0fee644a | 172 | #endif |
1da177e4 | 173 | |
0fee644a | 174 | static int stsi_1_2_2(struct sysinfo_1_2_2 *info, char *page, int len) |
1da177e4 | 175 | { |
0fee644a MS |
176 | struct sysinfo_1_2_2_extension *ext; |
177 | int i; | |
178 | ||
179 | if (stsi(info, 1, 2, 2) == -ENOSYS) | |
180 | return len; | |
181 | ext = (struct sysinfo_1_2_2_extension *) | |
182 | ((unsigned long) info + info->acc_offset); | |
183 | ||
184 | len += sprintf(page + len, "\n"); | |
185 | len += sprintf(page + len, "CPUs Total: %d\n", | |
186 | info->cpus_total); | |
187 | len += sprintf(page + len, "CPUs Configured: %d\n", | |
188 | info->cpus_configured); | |
189 | len += sprintf(page + len, "CPUs Standby: %d\n", | |
190 | info->cpus_standby); | |
191 | len += sprintf(page + len, "CPUs Reserved: %d\n", | |
192 | info->cpus_reserved); | |
193 | ||
194 | if (info->format == 1) { | |
195 | /* | |
196 | * Sigh 2. According to the specification the alternate | |
197 | * capability field is a 32 bit floating point number | |
198 | * if the higher order 8 bits are not zero. Printing | |
199 | * a floating point number in the kernel is a no-no, | |
200 | * always print the number as 32 bit unsigned integer. | |
201 | * The user-space needs to know about the stange | |
202 | * encoding of the alternate cpu capability. | |
203 | */ | |
204 | len += sprintf(page + len, "Capability: %u %u\n", | |
205 | info->capability, ext->alt_capability); | |
206 | for (i = 2; i <= info->cpus_total; i++) | |
207 | len += sprintf(page + len, | |
208 | "Adjustment %02d-way: %u %u\n", | |
209 | i, info->adjustment[i-2], | |
210 | ext->alt_adjustment[i-2]); | |
211 | ||
212 | } else { | |
213 | len += sprintf(page + len, "Capability: %u\n", | |
214 | info->capability); | |
215 | for (i = 2; i <= info->cpus_total; i++) | |
216 | len += sprintf(page + len, | |
217 | "Adjustment %02d-way: %u\n", | |
218 | i, info->adjustment[i-2]); | |
219 | } | |
220 | ||
221 | if (info->secondary_capability != 0) | |
222 | len += sprintf(page + len, "Secondary Capability: %d\n", | |
223 | info->secondary_capability); | |
224 | ||
225 | return len; | |
1da177e4 LT |
226 | } |
227 | ||
0fee644a MS |
228 | #if 0 /* Currently unused */ |
229 | static int stsi_2_2_1(struct sysinfo_2_2_1 *info, char *page, int len) | |
1da177e4 | 230 | { |
0fee644a MS |
231 | if (stsi(info, 2, 2, 1) == -ENOSYS) |
232 | return len; | |
233 | ||
234 | len += sprintf(page + len, "\n"); | |
235 | EBCASC (info->sequence, sizeof(info->sequence)); | |
236 | EBCASC (info->plant, sizeof(info->plant)); | |
237 | len += sprintf(page + len, "Sequence Code of logical CPU: %-16.16s\n", | |
238 | info->sequence); | |
239 | len += sprintf(page + len, "Plant of logical CPU: %-16.16s\n", | |
240 | info->plant); | |
241 | return len; | |
1da177e4 | 242 | } |
0fee644a | 243 | #endif |
1da177e4 | 244 | |
0fee644a | 245 | static int stsi_2_2_2(struct sysinfo_2_2_2 *info, char *page, int len) |
1da177e4 | 246 | { |
0fee644a MS |
247 | if (stsi(info, 2, 2, 2) == -ENOSYS) |
248 | return len; | |
249 | ||
250 | EBCASC (info->name, sizeof(info->name)); | |
251 | ||
252 | len += sprintf(page + len, "\n"); | |
253 | len += sprintf(page + len, "LPAR Number: %d\n", | |
254 | info->lpar_number); | |
255 | ||
256 | len += sprintf(page + len, "LPAR Characteristics: "); | |
257 | if (info->characteristics & LPAR_CHAR_DEDICATED) | |
258 | len += sprintf(page + len, "Dedicated "); | |
259 | if (info->characteristics & LPAR_CHAR_SHARED) | |
260 | len += sprintf(page + len, "Shared "); | |
261 | if (info->characteristics & LPAR_CHAR_LIMITED) | |
262 | len += sprintf(page + len, "Limited "); | |
263 | len += sprintf(page + len, "\n"); | |
264 | ||
265 | len += sprintf(page + len, "LPAR Name: %-8.8s\n", | |
266 | info->name); | |
267 | ||
268 | len += sprintf(page + len, "LPAR Adjustment: %d\n", | |
269 | info->caf); | |
270 | ||
271 | len += sprintf(page + len, "LPAR CPUs Total: %d\n", | |
272 | info->cpus_total); | |
273 | len += sprintf(page + len, "LPAR CPUs Configured: %d\n", | |
274 | info->cpus_configured); | |
275 | len += sprintf(page + len, "LPAR CPUs Standby: %d\n", | |
276 | info->cpus_standby); | |
277 | len += sprintf(page + len, "LPAR CPUs Reserved: %d\n", | |
278 | info->cpus_reserved); | |
279 | len += sprintf(page + len, "LPAR CPUs Dedicated: %d\n", | |
280 | info->cpus_dedicated); | |
281 | len += sprintf(page + len, "LPAR CPUs Shared: %d\n", | |
282 | info->cpus_shared); | |
283 | return len; | |
1da177e4 LT |
284 | } |
285 | ||
0fee644a | 286 | static int stsi_3_2_2(struct sysinfo_3_2_2 *info, char *page, int len) |
1da177e4 | 287 | { |
0fee644a MS |
288 | int i; |
289 | ||
290 | if (stsi(info, 3, 2, 2) == -ENOSYS) | |
291 | return len; | |
292 | for (i = 0; i < info->count; i++) { | |
293 | EBCASC (info->vm[i].name, sizeof(info->vm[i].name)); | |
294 | EBCASC (info->vm[i].cpi, sizeof(info->vm[i].cpi)); | |
295 | len += sprintf(page + len, "\n"); | |
296 | len += sprintf(page + len, "VM%02d Name: %-8.8s\n", | |
297 | i, info->vm[i].name); | |
298 | len += sprintf(page + len, "VM%02d Control Program: %-16.16s\n", | |
299 | i, info->vm[i].cpi); | |
300 | ||
301 | len += sprintf(page + len, "VM%02d Adjustment: %d\n", | |
302 | i, info->vm[i].caf); | |
303 | ||
304 | len += sprintf(page + len, "VM%02d CPUs Total: %d\n", | |
305 | i, info->vm[i].cpus_total); | |
306 | len += sprintf(page + len, "VM%02d CPUs Configured: %d\n", | |
307 | i, info->vm[i].cpus_configured); | |
308 | len += sprintf(page + len, "VM%02d CPUs Standby: %d\n", | |
309 | i, info->vm[i].cpus_standby); | |
310 | len += sprintf(page + len, "VM%02d CPUs Reserved: %d\n", | |
311 | i, info->vm[i].cpus_reserved); | |
1da177e4 | 312 | } |
0fee644a | 313 | return len; |
1da177e4 LT |
314 | } |
315 | ||
316 | ||
317 | static int proc_read_sysinfo(char *page, char **start, | |
318 | off_t off, int count, | |
319 | int *eof, void *data) | |
320 | { | |
0fee644a MS |
321 | unsigned long info = get_zeroed_page (GFP_KERNEL); |
322 | int level, len; | |
1da177e4 LT |
323 | |
324 | if (!info) | |
325 | return 0; | |
326 | ||
0fee644a MS |
327 | len = 0; |
328 | level = stsi_0(); | |
329 | if (level >= 1) | |
330 | len = stsi_1_1_1((struct sysinfo_1_1_1 *) info, page, len); | |
1da177e4 | 331 | |
0fee644a MS |
332 | if (level >= 1) |
333 | len = stsi_1_2_2((struct sysinfo_1_2_2 *) info, page, len); | |
1da177e4 | 334 | |
0fee644a MS |
335 | if (level >= 2) |
336 | len = stsi_2_2_2((struct sysinfo_2_2_2 *) info, page, len); | |
1da177e4 | 337 | |
0fee644a MS |
338 | if (level >= 3) |
339 | len = stsi_3_2_2((struct sysinfo_3_2_2 *) info, page, len); | |
1da177e4 | 340 | |
0fee644a | 341 | free_page (info); |
1da177e4 LT |
342 | return len; |
343 | } | |
344 | ||
345 | static __init int create_proc_sysinfo(void) | |
346 | { | |
0fee644a MS |
347 | create_proc_read_entry("sysinfo", 0444, NULL, |
348 | proc_read_sysinfo, NULL); | |
1da177e4 LT |
349 | return 0; |
350 | } | |
351 | ||
352 | __initcall(create_proc_sysinfo); | |
353 |