Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| 14 | struct sysinfo_1_1_1 |
| 15 | { |
| 16 | char reserved_0[32]; |
| 17 | char manufacturer[16]; |
| 18 | char type[4]; |
| 19 | char reserved_1[12]; |
| 20 | char model[16]; |
| 21 | char sequence[16]; |
| 22 | char plant[4]; |
| 23 | }; |
| 24 | |
| 25 | struct sysinfo_1_2_1 |
| 26 | { |
| 27 | char reserved_0[80]; |
| 28 | char sequence[16]; |
| 29 | char plant[4]; |
| 30 | char reserved_1[2]; |
| 31 | unsigned short cpu_address; |
| 32 | }; |
| 33 | |
| 34 | struct sysinfo_1_2_2 |
| 35 | { |
| 36 | char reserved_0[32]; |
| 37 | unsigned int capability; |
| 38 | unsigned short cpus_total; |
| 39 | unsigned short cpus_configured; |
| 40 | unsigned short cpus_standby; |
| 41 | unsigned short cpus_reserved; |
| 42 | unsigned short adjustment[0]; |
| 43 | }; |
| 44 | |
| 45 | struct sysinfo_2_2_1 |
| 46 | { |
| 47 | char reserved_0[80]; |
| 48 | char sequence[16]; |
| 49 | char plant[4]; |
| 50 | unsigned short cpu_id; |
| 51 | unsigned short cpu_address; |
| 52 | }; |
| 53 | |
| 54 | struct sysinfo_2_2_2 |
| 55 | { |
| 56 | char reserved_0[32]; |
| 57 | unsigned short lpar_number; |
| 58 | char reserved_1; |
| 59 | unsigned char characteristics; |
| 60 | #define LPAR_CHAR_DEDICATED (1 << 7) |
| 61 | #define LPAR_CHAR_SHARED (1 << 6) |
| 62 | #define LPAR_CHAR_LIMITED (1 << 5) |
| 63 | unsigned short cpus_total; |
| 64 | unsigned short cpus_configured; |
| 65 | unsigned short cpus_standby; |
| 66 | unsigned short cpus_reserved; |
| 67 | char name[8]; |
| 68 | unsigned int caf; |
| 69 | char reserved_2[16]; |
| 70 | unsigned short cpus_dedicated; |
| 71 | unsigned short cpus_shared; |
| 72 | }; |
| 73 | |
| 74 | struct sysinfo_3_2_2 |
| 75 | { |
| 76 | char reserved_0[31]; |
| 77 | unsigned char count; |
| 78 | struct |
| 79 | { |
| 80 | char reserved_0[4]; |
| 81 | unsigned short cpus_total; |
| 82 | unsigned short cpus_configured; |
| 83 | unsigned short cpus_standby; |
| 84 | unsigned short cpus_reserved; |
| 85 | char name[8]; |
| 86 | unsigned int caf; |
| 87 | char cpi[16]; |
| 88 | char reserved_1[24]; |
| 89 | |
| 90 | } vm[8]; |
| 91 | }; |
| 92 | |
| 93 | union s390_sysinfo |
| 94 | { |
| 95 | struct sysinfo_1_1_1 sysinfo_1_1_1; |
| 96 | struct sysinfo_1_2_1 sysinfo_1_2_1; |
| 97 | struct sysinfo_1_2_2 sysinfo_1_2_2; |
| 98 | struct sysinfo_2_2_1 sysinfo_2_2_1; |
| 99 | struct sysinfo_2_2_2 sysinfo_2_2_2; |
| 100 | struct sysinfo_3_2_2 sysinfo_3_2_2; |
| 101 | }; |
| 102 | |
| 103 | static inline int stsi (void *sysinfo, |
| 104 | int fc, int sel1, int sel2) |
| 105 | { |
| 106 | int cc, retv; |
| 107 | |
Martin Schwidefsky | 347a8dc | 2006-01-06 00:19:28 -0800 | [diff] [blame] | 108 | #ifndef CONFIG_64BIT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | __asm__ __volatile__ ( "lr\t0,%2\n" |
| 110 | "\tlr\t1,%3\n" |
| 111 | "\tstsi\t0(%4)\n" |
| 112 | "0:\tipm\t%0\n" |
| 113 | "\tsrl\t%0,28\n" |
| 114 | "1:lr\t%1,0\n" |
| 115 | ".section .fixup,\"ax\"\n" |
| 116 | "2:\tlhi\t%0,3\n" |
| 117 | "\tbras\t1,3f\n" |
| 118 | "\t.long 1b\n" |
| 119 | "3:\tl\t1,0(1)\n" |
| 120 | "\tbr\t1\n" |
| 121 | ".previous\n" |
| 122 | ".section __ex_table,\"a\"\n" |
| 123 | "\t.align 4\n" |
| 124 | "\t.long 0b,2b\n" |
| 125 | ".previous\n" |
| 126 | : "=d" (cc), "=d" (retv) |
| 127 | : "d" ((fc << 28) | sel1), "d" (sel2), "a" (sysinfo) |
| 128 | : "cc", "memory", "0", "1" ); |
| 129 | #else |
| 130 | __asm__ __volatile__ ( "lr\t0,%2\n" |
| 131 | "lr\t1,%3\n" |
| 132 | "\tstsi\t0(%4)\n" |
| 133 | "0:\tipm\t%0\n" |
| 134 | "\tsrl\t%0,28\n" |
| 135 | "1:lr\t%1,0\n" |
| 136 | ".section .fixup,\"ax\"\n" |
| 137 | "2:\tlhi\t%0,3\n" |
| 138 | "\tjg\t1b\n" |
| 139 | ".previous\n" |
| 140 | ".section __ex_table,\"a\"\n" |
| 141 | "\t.align 8\n" |
| 142 | "\t.quad 0b,2b\n" |
| 143 | ".previous\n" |
| 144 | : "=d" (cc), "=d" (retv) |
| 145 | : "d" ((fc << 28) | sel1), "d" (sel2), "a" (sysinfo) |
| 146 | : "cc", "memory", "0", "1" ); |
| 147 | #endif |
| 148 | |
| 149 | return cc? -1 : retv; |
| 150 | } |
| 151 | |
| 152 | static inline int stsi_0 (void) |
| 153 | { |
| 154 | int rc = stsi (NULL, 0, 0, 0); |
| 155 | return rc == -1 ? rc : (((unsigned int)rc) >> 28); |
| 156 | } |
| 157 | |
| 158 | static inline int stsi_1_1_1 (struct sysinfo_1_1_1 *info) |
| 159 | { |
| 160 | int rc = stsi (info, 1, 1, 1); |
| 161 | if (rc != -1) |
| 162 | { |
| 163 | EBCASC (info->manufacturer, sizeof(info->manufacturer)); |
| 164 | EBCASC (info->type, sizeof(info->type)); |
| 165 | EBCASC (info->model, sizeof(info->model)); |
| 166 | EBCASC (info->sequence, sizeof(info->sequence)); |
| 167 | EBCASC (info->plant, sizeof(info->plant)); |
| 168 | } |
| 169 | return rc == -1 ? rc : 0; |
| 170 | } |
| 171 | |
| 172 | static inline int stsi_1_2_1 (struct sysinfo_1_2_1 *info) |
| 173 | { |
| 174 | int rc = stsi (info, 1, 2, 1); |
| 175 | if (rc != -1) |
| 176 | { |
| 177 | EBCASC (info->sequence, sizeof(info->sequence)); |
| 178 | EBCASC (info->plant, sizeof(info->plant)); |
| 179 | } |
| 180 | return rc == -1 ? rc : 0; |
| 181 | } |
| 182 | |
| 183 | static inline int stsi_1_2_2 (struct sysinfo_1_2_2 *info) |
| 184 | { |
| 185 | int rc = stsi (info, 1, 2, 2); |
| 186 | return rc == -1 ? rc : 0; |
| 187 | } |
| 188 | |
| 189 | static inline int stsi_2_2_1 (struct sysinfo_2_2_1 *info) |
| 190 | { |
| 191 | int rc = stsi (info, 2, 2, 1); |
| 192 | if (rc != -1) |
| 193 | { |
| 194 | EBCASC (info->sequence, sizeof(info->sequence)); |
| 195 | EBCASC (info->plant, sizeof(info->plant)); |
| 196 | } |
| 197 | return rc == -1 ? rc : 0; |
| 198 | } |
| 199 | |
| 200 | static inline int stsi_2_2_2 (struct sysinfo_2_2_2 *info) |
| 201 | { |
| 202 | int rc = stsi (info, 2, 2, 2); |
| 203 | if (rc != -1) |
| 204 | { |
| 205 | EBCASC (info->name, sizeof(info->name)); |
| 206 | } |
| 207 | return rc == -1 ? rc : 0; |
| 208 | } |
| 209 | |
| 210 | static inline int stsi_3_2_2 (struct sysinfo_3_2_2 *info) |
| 211 | { |
| 212 | int rc = stsi (info, 3, 2, 2); |
| 213 | if (rc != -1) |
| 214 | { |
| 215 | int i; |
| 216 | for (i = 0; i < info->count; i++) |
| 217 | { |
| 218 | EBCASC (info->vm[i].name, sizeof(info->vm[i].name)); |
| 219 | EBCASC (info->vm[i].cpi, sizeof(info->vm[i].cpi)); |
| 220 | } |
| 221 | } |
| 222 | return rc == -1 ? rc : 0; |
| 223 | } |
| 224 | |
| 225 | |
| 226 | static int proc_read_sysinfo(char *page, char **start, |
| 227 | off_t off, int count, |
| 228 | int *eof, void *data) |
| 229 | { |
| 230 | unsigned long info_page = get_zeroed_page (GFP_KERNEL); |
| 231 | union s390_sysinfo *info = (union s390_sysinfo *) info_page; |
| 232 | int len = 0; |
| 233 | int level; |
| 234 | int i; |
| 235 | |
| 236 | if (!info) |
| 237 | return 0; |
| 238 | |
| 239 | level = stsi_0 (); |
| 240 | |
| 241 | if (level >= 1 && stsi_1_1_1 (&info->sysinfo_1_1_1) == 0) |
| 242 | { |
| 243 | len += sprintf (page+len, "Manufacturer: %-16.16s\n", |
| 244 | info->sysinfo_1_1_1.manufacturer); |
| 245 | len += sprintf (page+len, "Type: %-4.4s\n", |
| 246 | info->sysinfo_1_1_1.type); |
| 247 | len += sprintf (page+len, "Model: %-16.16s\n", |
| 248 | info->sysinfo_1_1_1.model); |
| 249 | len += sprintf (page+len, "Sequence Code: %-16.16s\n", |
| 250 | info->sysinfo_1_1_1.sequence); |
| 251 | len += sprintf (page+len, "Plant: %-4.4s\n", |
| 252 | info->sysinfo_1_1_1.plant); |
| 253 | } |
| 254 | |
| 255 | if (level >= 1 && stsi_1_2_2 (&info->sysinfo_1_2_2) == 0) |
| 256 | { |
| 257 | len += sprintf (page+len, "\n"); |
| 258 | len += sprintf (page+len, "CPUs Total: %d\n", |
| 259 | info->sysinfo_1_2_2.cpus_total); |
| 260 | len += sprintf (page+len, "CPUs Configured: %d\n", |
| 261 | info->sysinfo_1_2_2.cpus_configured); |
| 262 | len += sprintf (page+len, "CPUs Standby: %d\n", |
| 263 | info->sysinfo_1_2_2.cpus_standby); |
| 264 | len += sprintf (page+len, "CPUs Reserved: %d\n", |
| 265 | info->sysinfo_1_2_2.cpus_reserved); |
| 266 | |
| 267 | len += sprintf (page+len, "Capability: %d\n", |
| 268 | info->sysinfo_1_2_2.capability); |
| 269 | |
| 270 | for (i = 2; i <= info->sysinfo_1_2_2.cpus_total; i++) |
| 271 | len += sprintf (page+len, "Adjustment %02d-way: %d\n", |
| 272 | i, info->sysinfo_1_2_2.adjustment[i-2]); |
| 273 | } |
| 274 | |
| 275 | if (level >= 2 && stsi_2_2_2 (&info->sysinfo_2_2_2) == 0) |
| 276 | { |
| 277 | len += sprintf (page+len, "\n"); |
| 278 | len += sprintf (page+len, "LPAR Number: %d\n", |
| 279 | info->sysinfo_2_2_2.lpar_number); |
| 280 | |
| 281 | len += sprintf (page+len, "LPAR Characteristics: "); |
| 282 | if (info->sysinfo_2_2_2.characteristics & LPAR_CHAR_DEDICATED) |
| 283 | len += sprintf (page+len, "Dedicated "); |
| 284 | if (info->sysinfo_2_2_2.characteristics & LPAR_CHAR_SHARED) |
| 285 | len += sprintf (page+len, "Shared "); |
| 286 | if (info->sysinfo_2_2_2.characteristics & LPAR_CHAR_LIMITED) |
| 287 | len += sprintf (page+len, "Limited "); |
| 288 | len += sprintf (page+len, "\n"); |
| 289 | |
| 290 | len += sprintf (page+len, "LPAR Name: %-8.8s\n", |
| 291 | info->sysinfo_2_2_2.name); |
| 292 | |
| 293 | len += sprintf (page+len, "LPAR Adjustment: %d\n", |
| 294 | info->sysinfo_2_2_2.caf); |
| 295 | |
| 296 | len += sprintf (page+len, "LPAR CPUs Total: %d\n", |
| 297 | info->sysinfo_2_2_2.cpus_total); |
| 298 | len += sprintf (page+len, "LPAR CPUs Configured: %d\n", |
| 299 | info->sysinfo_2_2_2.cpus_configured); |
| 300 | len += sprintf (page+len, "LPAR CPUs Standby: %d\n", |
| 301 | info->sysinfo_2_2_2.cpus_standby); |
| 302 | len += sprintf (page+len, "LPAR CPUs Reserved: %d\n", |
| 303 | info->sysinfo_2_2_2.cpus_reserved); |
| 304 | len += sprintf (page+len, "LPAR CPUs Dedicated: %d\n", |
| 305 | info->sysinfo_2_2_2.cpus_dedicated); |
| 306 | len += sprintf (page+len, "LPAR CPUs Shared: %d\n", |
| 307 | info->sysinfo_2_2_2.cpus_shared); |
| 308 | } |
| 309 | |
| 310 | if (level >= 3 && stsi_3_2_2 (&info->sysinfo_3_2_2) == 0) |
| 311 | { |
| 312 | for (i = 0; i < info->sysinfo_3_2_2.count; i++) |
| 313 | { |
| 314 | len += sprintf (page+len, "\n"); |
| 315 | len += sprintf (page+len, "VM%02d Name: %-8.8s\n", |
| 316 | i, info->sysinfo_3_2_2.vm[i].name); |
| 317 | len += sprintf (page+len, "VM%02d Control Program: %-16.16s\n", |
| 318 | i, info->sysinfo_3_2_2.vm[i].cpi); |
| 319 | |
| 320 | len += sprintf (page+len, "VM%02d Adjustment: %d\n", |
| 321 | i, info->sysinfo_3_2_2.vm[i].caf); |
| 322 | |
| 323 | len += sprintf (page+len, "VM%02d CPUs Total: %d\n", |
| 324 | i, info->sysinfo_3_2_2.vm[i].cpus_total); |
| 325 | len += sprintf (page+len, "VM%02d CPUs Configured: %d\n", |
| 326 | i, info->sysinfo_3_2_2.vm[i].cpus_configured); |
| 327 | len += sprintf (page+len, "VM%02d CPUs Standby: %d\n", |
| 328 | i, info->sysinfo_3_2_2.vm[i].cpus_standby); |
| 329 | len += sprintf (page+len, "VM%02d CPUs Reserved: %d\n", |
| 330 | i, info->sysinfo_3_2_2.vm[i].cpus_reserved); |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | free_page (info_page); |
| 335 | return len; |
| 336 | } |
| 337 | |
| 338 | static __init int create_proc_sysinfo(void) |
| 339 | { |
| 340 | create_proc_read_entry ("sysinfo", 0444, NULL, |
| 341 | proc_read_sysinfo, NULL); |
| 342 | return 0; |
| 343 | } |
| 344 | |
| 345 | __initcall(create_proc_sysinfo); |
| 346 | |