git.oblomov.eu Git - linux-2.6/blob - drivers/s390/sysinfo.c

   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/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
 108 #ifndef CONFIG_64BIT
 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