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/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_64BIT
 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