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[TG3]: Set minimal hw interrupt mitigation.
[linux-2.6/verdex.git] / drivers / s390 / sysinfo.c
blob87c2db1bd4f5793e9412805ce4e31ed146272878
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
8 #include <linux/config.h>
9 #include <linux/kernel.h>
10 #include <linux/mm.h>
11 #include <linux/proc_fs.h>
12 #include <linux/init.h>
13 #include <asm/ebcdic.h>
14
15 struct sysinfo_1_1_1
16 {
17 char reserved_0[32];
18 char manufacturer[16];
19 char type[4];
20 char reserved_1[12];
21 char model[16];
22 char sequence[16];
23 char plant[4];
24 };
25
26 struct sysinfo_1_2_1
27 {
28 char reserved_0[80];
29 char sequence[16];
30 char plant[4];
31 char reserved_1[2];
32 unsigned short cpu_address;
33 };
34
35 struct sysinfo_1_2_2
36 {
37 char reserved_0[32];
38 unsigned int capability;
39 unsigned short cpus_total;
40 unsigned short cpus_configured;
41 unsigned short cpus_standby;
42 unsigned short cpus_reserved;
43 unsigned short adjustment[0];
44 };
45
46 struct sysinfo_2_2_1
47 {
48 char reserved_0[80];
49 char sequence[16];
50 char plant[4];
51 unsigned short cpu_id;
52 unsigned short cpu_address;
53 };
54
55 struct sysinfo_2_2_2
56 {
57 char reserved_0[32];
58 unsigned short lpar_number;
59 char reserved_1;
60 unsigned char characteristics;
61 #define LPAR_CHAR_DEDICATED (1 << 7)
62 #define LPAR_CHAR_SHARED (1 << 6)
63 #define LPAR_CHAR_LIMITED (1 << 5)
64 unsigned short cpus_total;
65 unsigned short cpus_configured;
66 unsigned short cpus_standby;
67 unsigned short cpus_reserved;
68 char name[8];
69 unsigned int caf;
70 char reserved_2[16];
71 unsigned short cpus_dedicated;
72 unsigned short cpus_shared;
73 };
74
75 struct sysinfo_3_2_2
76 {
77 char reserved_0[31];
78 unsigned char count;
79 struct
80 {
81 char reserved_0[4];
82 unsigned short cpus_total;
83 unsigned short cpus_configured;
84 unsigned short cpus_standby;
85 unsigned short cpus_reserved;
86 char name[8];
87 unsigned int caf;
88 char cpi[16];
89 char reserved_1[24];
90
91 } vm[8];
92 };
93
94 union s390_sysinfo
95 {
96 struct sysinfo_1_1_1 sysinfo_1_1_1;
97 struct sysinfo_1_2_1 sysinfo_1_2_1;
98 struct sysinfo_1_2_2 sysinfo_1_2_2;
99 struct sysinfo_2_2_1 sysinfo_2_2_1;
100 struct sysinfo_2_2_2 sysinfo_2_2_2;
101 struct sysinfo_3_2_2 sysinfo_3_2_2;
102 };
103
104 static inline int stsi (void *sysinfo,
105 int fc, int sel1, int sel2)
106 {
107 int cc, retv;
108
109 #ifndef CONFIG_ARCH_S390X
110 __asm__ __volatile__ ( "lr\t0,%2\n"
111 "\tlr\t1,%3\n"
112 "\tstsi\t0(%4)\n"
113 "0:\tipm\t%0\n"
114 "\tsrl\t%0,28\n"
115 "1:lr\t%1,0\n"
116 ".section .fixup,\"ax\"\n"
117 "2:\tlhi\t%0,3\n"
118 "\tbras\t1,3f\n"
119 "\t.long 1b\n"
120 "3:\tl\t1,0(1)\n"
121 "\tbr\t1\n"
122 ".previous\n"
123 ".section __ex_table,\"a\"\n"
124 "\t.align 4\n"
125 "\t.long 0b,2b\n"
126 ".previous\n"
127 : "=d" (cc), "=d" (retv)
128 : "d" ((fc << 28) | sel1), "d" (sel2), "a" (sysinfo)
129 : "cc", "memory", "0", "1" );
130 #else
131 __asm__ __volatile__ ( "lr\t0,%2\n"
132 "lr\t1,%3\n"
133 "\tstsi\t0(%4)\n"
134 "0:\tipm\t%0\n"
135 "\tsrl\t%0,28\n"
136 "1:lr\t%1,0\n"
137 ".section .fixup,\"ax\"\n"
138 "2:\tlhi\t%0,3\n"
139 "\tjg\t1b\n"
140 ".previous\n"
141 ".section __ex_table,\"a\"\n"
142 "\t.align 8\n"
143 "\t.quad 0b,2b\n"
144 ".previous\n"
145 : "=d" (cc), "=d" (retv)
146 : "d" ((fc << 28) | sel1), "d" (sel2), "a" (sysinfo)
147 : "cc", "memory", "0", "1" );
148 #endif
149
150 return cc? -1 : retv;
151 }
152
153 static inline int stsi_0 (void)
154 {
155 int rc = stsi (NULL, 0, 0, 0);
156 return rc == -1 ? rc : (((unsigned int)rc) >> 28);
157 }
158
159 static inline int stsi_1_1_1 (struct sysinfo_1_1_1 *info)
160 {
161 int rc = stsi (info, 1, 1, 1);
162 if (rc != -1)
163 {
164 EBCASC (info->manufacturer, sizeof(info->manufacturer));
165 EBCASC (info->type, sizeof(info->type));
166 EBCASC (info->model, sizeof(info->model));
167 EBCASC (info->sequence, sizeof(info->sequence));
168 EBCASC (info->plant, sizeof(info->plant));
169 }
170 return rc == -1 ? rc : 0;
171 }
172
173 static inline int stsi_1_2_1 (struct sysinfo_1_2_1 *info)
174 {
175 int rc = stsi (info, 1, 2, 1);
176 if (rc != -1)
177 {
178 EBCASC (info->sequence, sizeof(info->sequence));
179 EBCASC (info->plant, sizeof(info->plant));
180 }
181 return rc == -1 ? rc : 0;
182 }
183
184 static inline int stsi_1_2_2 (struct sysinfo_1_2_2 *info)
185 {
186 int rc = stsi (info, 1, 2, 2);
187 return rc == -1 ? rc : 0;
188 }
189
190 static inline int stsi_2_2_1 (struct sysinfo_2_2_1 *info)
191 {
192 int rc = stsi (info, 2, 2, 1);
193 if (rc != -1)
194 {
195 EBCASC (info->sequence, sizeof(info->sequence));
196 EBCASC (info->plant, sizeof(info->plant));
197 }
198 return rc == -1 ? rc : 0;
199 }
200
201 static inline int stsi_2_2_2 (struct sysinfo_2_2_2 *info)
202 {
203 int rc = stsi (info, 2, 2, 2);
204 if (rc != -1)
205 {
206 EBCASC (info->name, sizeof(info->name));
207 }
208 return rc == -1 ? rc : 0;
209 }
210
211 static inline int stsi_3_2_2 (struct sysinfo_3_2_2 *info)
212 {
213 int rc = stsi (info, 3, 2, 2);
214 if (rc != -1)
215 {
216 int i;
217 for (i = 0; i < info->count; i++)
218 {
219 EBCASC (info->vm[i].name, sizeof(info->vm[i].name));
220 EBCASC (info->vm[i].cpi, sizeof(info->vm[i].cpi));
221 }
222 }
223 return rc == -1 ? rc : 0;
224 }
225
226
227 static int proc_read_sysinfo(char *page, char **start,
228 off_t off, int count,
229 int *eof, void *data)
230 {
231 unsigned long info_page = get_zeroed_page (GFP_KERNEL);
232 union s390_sysinfo *info = (union s390_sysinfo *) info_page;
233 int len = 0;
234 int level;
235 int i;
236
237 if (!info)
238 return 0;
239
240 level = stsi_0 ();
241
242 if (level >= 1 && stsi_1_1_1 (&info->sysinfo_1_1_1) == 0)
243 {
244 len += sprintf (page+len, "Manufacturer: %-16.16s\n",
245 info->sysinfo_1_1_1.manufacturer);
246 len += sprintf (page+len, "Type: %-4.4s\n",
247 info->sysinfo_1_1_1.type);
248 len += sprintf (page+len, "Model: %-16.16s\n",
249 info->sysinfo_1_1_1.model);
250 len += sprintf (page+len, "Sequence Code: %-16.16s\n",
251 info->sysinfo_1_1_1.sequence);
252 len += sprintf (page+len, "Plant: %-4.4s\n",
253 info->sysinfo_1_1_1.plant);
254 }
255
256 if (level >= 1 && stsi_1_2_2 (&info->sysinfo_1_2_2) == 0)
257 {
258 len += sprintf (page+len, "\n");
259 len += sprintf (page+len, "CPUs Total: %d\n",
260 info->sysinfo_1_2_2.cpus_total);
261 len += sprintf (page+len, "CPUs Configured: %d\n",
262 info->sysinfo_1_2_2.cpus_configured);
263 len += sprintf (page+len, "CPUs Standby: %d\n",
264 info->sysinfo_1_2_2.cpus_standby);
265 len += sprintf (page+len, "CPUs Reserved: %d\n",
266 info->sysinfo_1_2_2.cpus_reserved);
267
268 len += sprintf (page+len, "Capability: %d\n",
269 info->sysinfo_1_2_2.capability);
270
271 for (i = 2; i <= info->sysinfo_1_2_2.cpus_total; i++)
272 len += sprintf (page+len, "Adjustment %02d-way: %d\n",
273 i, info->sysinfo_1_2_2.adjustment[i-2]);
274 }
275
276 if (level >= 2 && stsi_2_2_2 (&info->sysinfo_2_2_2) == 0)
277 {
278 len += sprintf (page+len, "\n");
279 len += sprintf (page+len, "LPAR Number: %d\n",
280 info->sysinfo_2_2_2.lpar_number);
281
282 len += sprintf (page+len, "LPAR Characteristics: ");
283 if (info->sysinfo_2_2_2.characteristics & LPAR_CHAR_DEDICATED)
284 len += sprintf (page+len, "Dedicated ");
285 if (info->sysinfo_2_2_2.characteristics & LPAR_CHAR_SHARED)
286 len += sprintf (page+len, "Shared ");
287 if (info->sysinfo_2_2_2.characteristics & LPAR_CHAR_LIMITED)
288 len += sprintf (page+len, "Limited ");
289 len += sprintf (page+len, "\n");
290
291 len += sprintf (page+len, "LPAR Name: %-8.8s\n",
292 info->sysinfo_2_2_2.name);
293
294 len += sprintf (page+len, "LPAR Adjustment: %d\n",
295 info->sysinfo_2_2_2.caf);
296
297 len += sprintf (page+len, "LPAR CPUs Total: %d\n",
298 info->sysinfo_2_2_2.cpus_total);
299 len += sprintf (page+len, "LPAR CPUs Configured: %d\n",
300 info->sysinfo_2_2_2.cpus_configured);
301 len += sprintf (page+len, "LPAR CPUs Standby: %d\n",
302 info->sysinfo_2_2_2.cpus_standby);
303 len += sprintf (page+len, "LPAR CPUs Reserved: %d\n",
304 info->sysinfo_2_2_2.cpus_reserved);
305 len += sprintf (page+len, "LPAR CPUs Dedicated: %d\n",
306 info->sysinfo_2_2_2.cpus_dedicated);
307 len += sprintf (page+len, "LPAR CPUs Shared: %d\n",
308 info->sysinfo_2_2_2.cpus_shared);
309 }
310
311 if (level >= 3 && stsi_3_2_2 (&info->sysinfo_3_2_2) == 0)
312 {
313 for (i = 0; i < info->sysinfo_3_2_2.count; i++)
314 {
315 len += sprintf (page+len, "\n");
316 len += sprintf (page+len, "VM%02d Name: %-8.8s\n",
317 i, info->sysinfo_3_2_2.vm[i].name);
318 len += sprintf (page+len, "VM%02d Control Program: %-16.16s\n",
319 i, info->sysinfo_3_2_2.vm[i].cpi);
320
321 len += sprintf (page+len, "VM%02d Adjustment: %d\n",
322 i, info->sysinfo_3_2_2.vm[i].caf);
323
324 len += sprintf (page+len, "VM%02d CPUs Total: %d\n",
325 i, info->sysinfo_3_2_2.vm[i].cpus_total);
326 len += sprintf (page+len, "VM%02d CPUs Configured: %d\n",
327 i, info->sysinfo_3_2_2.vm[i].cpus_configured);
328 len += sprintf (page+len, "VM%02d CPUs Standby: %d\n",
329 i, info->sysinfo_3_2_2.vm[i].cpus_standby);
330 len += sprintf (page+len, "VM%02d CPUs Reserved: %d\n",
331 i, info->sysinfo_3_2_2.vm[i].cpus_reserved);
332 }
333 }
334
335 free_page (info_page);
336 return len;
337 }
338
339 static __init int create_proc_sysinfo(void)
340 {
341 create_proc_read_entry ("sysinfo", 0444, NULL,
342 proc_read_sysinfo, NULL);
343 return 0;
344 }
345
346 __initcall(create_proc_sysinfo);
347
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