git.oblomov.eu Git - linux-2.6/blob - arch/ppc64/kernel/lparcfg.c

   1 /*
   2  * PowerPC64 LPAR Configuration Information Driver
   3  *
   4  * Dave Engebretsen engebret@us.ibm.com
   5  *    Copyright (c) 2003 Dave Engebretsen
   6  * Will Schmidt willschm@us.ibm.com
   7  *    SPLPAR updates, Copyright (c) 2003 Will Schmidt IBM Corporation.
   8  *    seq_file updates, Copyright (c) 2004 Will Schmidt IBM Corporation.
   9  * Nathan Lynch nathanl@austin.ibm.com
  10  *    Added lparcfg_write, Copyright (C) 2004 Nathan Lynch IBM Corporation.
  11  *
  12  *      This program is free software; you can redistribute it and/or
  13  *      modify it under the terms of the GNU General Public License
  14  *      as published by the Free Software Foundation; either version
  15  *      2 of the License, or (at your option) any later version.
  16  *
  17  * This driver creates a proc file at /proc/ppc64/lparcfg which contains
  18  * keyword - value pairs that specify the configuration of the partition.
  19  */
  20
  21 #include <linux/config.h>
  22 #include <linux/module.h>
  23 #include <linux/types.h>
  24 #include <linux/errno.h>
  25 #include <linux/proc_fs.h>
  26 #include <linux/init.h>
  27 #include <linux/seq_file.h>
  28 #include <asm/uaccess.h>
  29 #include <asm/iSeries/HvLpConfig.h>
  30 #include <asm/lppaca.h>
  31 #include <asm/hvcall.h>
  32 #include <asm/cputable.h>
  33 #include <asm/rtas.h>
  34 #include <asm/system.h>
  35 #include <asm/time.h>
  36 #include <asm/iSeries/ItExtVpdPanel.h>
  37
  38 #define MODULE_VERS "1.6"
  39 #define MODULE_NAME "lparcfg"
  40
  41 /* #define LPARCFG_DEBUG */
  42
  43 /* find a better place for this function... */
  44 void log_plpar_hcall_return(unsigned long rc, char *tag)
  45 {
  46         if (rc == 0)            /* success, return */
  47                 return;
  48 /* check for null tag ? */
  49         if (rc == H_Hardware)
  50                 printk(KERN_INFO
  51                        "plpar-hcall (%s) failed with hardware fault\n", tag);
  52         else if (rc == H_Function)
  53                 printk(KERN_INFO
  54                        "plpar-hcall (%s) failed; function not allowed\n", tag);
  55         else if (rc == H_Authority)
  56                 printk(KERN_INFO
  57                        "plpar-hcall (%s) failed; not authorized to this function\n",
  58                        tag);
  59         else if (rc == H_Parameter)
  60                 printk(KERN_INFO "plpar-hcall (%s) failed; Bad parameter(s)\n",
  61                        tag);
  62         else
  63                 printk(KERN_INFO
  64                        "plpar-hcall (%s) failed with unexpected rc(0x%lx)\n",
  65                        tag, rc);
  66
  67 }
  68
  69 static struct proc_dir_entry *proc_ppc64_lparcfg;
  70 #define LPARCFG_BUFF_SIZE 4096
  71
  72 #ifdef CONFIG_PPC_ISERIES
  73
  74 /*
  75  * For iSeries legacy systems, the PPA purr function is available from the
  76  * emulated_time_base field in the paca.
  77  */
  78 static unsigned long get_purr(void)
  79 {
  80         unsigned long sum_purr = 0;
  81         int cpu;
  82         struct paca_struct *lpaca;
  83
  84         for_each_cpu(cpu) {
  85                 lpaca = paca + cpu;
  86                 sum_purr += lpaca->lppaca.emulated_time_base;
  87
  88 #ifdef PURR_DEBUG
  89                 printk(KERN_INFO "get_purr for cpu (%d) has value (%ld) \n",
  90                         cpu, lpaca->lppaca.emulated_time_base);
  91 #endif
  92         }
  93         return sum_purr;
  94 }
  95
  96 #define lparcfg_write NULL
  97
  98 /*
  99  * Methods used to fetch LPAR data when running on an iSeries platform.
 100  */
 101 static int lparcfg_data(struct seq_file *m, void *v)
 102 {
 103         unsigned long pool_id, lp_index;
 104         int shared, entitled_capacity, max_entitled_capacity;
 105         int processors, max_processors;
 106         struct paca_struct *lpaca = get_paca();
 107         unsigned long purr = get_purr();
 108
 109         seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);
 110
 111         shared = (int)(lpaca->lppaca_ptr->shared_proc);
 112         seq_printf(m, "serial_number=%c%c%c%c%c%c%c\n",
 113                    e2a(xItExtVpdPanel.mfgID[2]),
 114                    e2a(xItExtVpdPanel.mfgID[3]),
 115                    e2a(xItExtVpdPanel.systemSerial[1]),
 116                    e2a(xItExtVpdPanel.systemSerial[2]),
 117                    e2a(xItExtVpdPanel.systemSerial[3]),
 118                    e2a(xItExtVpdPanel.systemSerial[4]),
 119                    e2a(xItExtVpdPanel.systemSerial[5]));
 120
 121         seq_printf(m, "system_type=%c%c%c%c\n",
 122                    e2a(xItExtVpdPanel.machineType[0]),
 123                    e2a(xItExtVpdPanel.machineType[1]),
 124                    e2a(xItExtVpdPanel.machineType[2]),
 125                    e2a(xItExtVpdPanel.machineType[3]));
 126
 127         lp_index = HvLpConfig_getLpIndex();
 128         seq_printf(m, "partition_id=%d\n", (int)lp_index);
 129
 130         seq_printf(m, "system_active_processors=%d\n",
 131                    (int)HvLpConfig_getSystemPhysicalProcessors());
 132
 133         seq_printf(m, "system_potential_processors=%d\n",
 134                    (int)HvLpConfig_getSystemPhysicalProcessors());
 135
 136         processors = (int)HvLpConfig_getPhysicalProcessors();
 137         seq_printf(m, "partition_active_processors=%d\n", processors);
 138
 139         max_processors = (int)HvLpConfig_getMaxPhysicalProcessors();
 140         seq_printf(m, "partition_potential_processors=%d\n", max_processors);
 141
 142         if (shared) {
 143                 entitled_capacity = HvLpConfig_getSharedProcUnits();
 144                 max_entitled_capacity = HvLpConfig_getMaxSharedProcUnits();
 145         } else {
 146                 entitled_capacity = processors * 100;
 147                 max_entitled_capacity = max_processors * 100;
 148         }
 149         seq_printf(m, "partition_entitled_capacity=%d\n", entitled_capacity);
 150
 151         seq_printf(m, "partition_max_entitled_capacity=%d\n",
 152                    max_entitled_capacity);
 153
 154         if (shared) {
 155                 pool_id = HvLpConfig_getSharedPoolIndex();
 156                 seq_printf(m, "pool=%d\n", (int)pool_id);
 157                 seq_printf(m, "pool_capacity=%d\n",
 158                            (int)(HvLpConfig_getNumProcsInSharedPool(pool_id) *
 159                                  100));
 160                 seq_printf(m, "purr=%ld\n", purr);
 161         }
 162
 163         seq_printf(m, "shared_processor_mode=%d\n", shared);
 164
 165         return 0;
 166 }
 167 #endif                          /* CONFIG_PPC_ISERIES */
 168
 169 #ifdef CONFIG_PPC_PSERIES
 170 /*
 171  * Methods used to fetch LPAR data when running on a pSeries platform.
 172  */
 173
 174 /*
 175  * H_GET_PPP hcall returns info in 4 parms.
 176  *  entitled_capacity,unallocated_capacity,
 177  *  aggregation, resource_capability).
 178  *
 179  *  R4 = Entitled Processor Capacity Percentage.
 180  *  R5 = Unallocated Processor Capacity Percentage.
 181  *  R6 (AABBCCDDEEFFGGHH).
 182  *      XXXX - reserved (0)
 183  *          XXXX - reserved (0)
 184  *              XXXX - Group Number
 185  *                  XXXX - Pool Number.
 186  *  R7 (IIJJKKLLMMNNOOPP).
 187  *      XX - reserved. (0)
 188  *        XX - bit 0-6 reserved (0).   bit 7 is Capped indicator.
 189  *          XX - variable processor Capacity Weight
 190  *            XX - Unallocated Variable Processor Capacity Weight.
 191  *              XXXX - Active processors in Physical Processor Pool.
 192  *                  XXXX  - Processors active on platform.
 193  */
 194 static unsigned int h_get_ppp(unsigned long *entitled,
 195                               unsigned long *unallocated,
 196                               unsigned long *aggregation,
 197                               unsigned long *resource)
 198 {
 199         unsigned long rc;
 200         rc = plpar_hcall_4out(H_GET_PPP, 0, 0, 0, 0, entitled, unallocated,
 201                               aggregation, resource);
 202
 203         log_plpar_hcall_return(rc, "H_GET_PPP");
 204
 205         return rc;
 206 }
 207
 208 static void h_pic(unsigned long *pool_idle_time, unsigned long *num_procs)
 209 {
 210         unsigned long rc;
 211         unsigned long dummy;
 212         rc = plpar_hcall(H_PIC, 0, 0, 0, 0, pool_idle_time, num_procs, &dummy);
 213
 214         log_plpar_hcall_return(rc, "H_PIC");
 215 }
 216
 217 static unsigned long get_purr(void);
 218
 219 /* Track sum of all purrs across all processors. This is used to further */
 220 /* calculate usage values by different applications                       */
 221
 222 static unsigned long get_purr(void)
 223 {
 224         unsigned long sum_purr = 0;
 225         int cpu;
 226         struct cpu_usage *cu;
 227
 228         for_each_cpu(cpu) {
 229                 cu = &per_cpu(cpu_usage_array, cpu);
 230                 sum_purr += cu->current_tb;
 231         }
 232         return sum_purr;
 233 }
 234
 235 #define SPLPAR_CHARACTERISTICS_TOKEN 20
 236 #define SPLPAR_MAXLENGTH 1026*(sizeof(char))
 237
 238 /*
 239  * parse_system_parameter_string()
 240  * Retrieve the potential_processors, max_entitled_capacity and friends
 241  * through the get-system-parameter rtas call.  Replace keyword strings as
 242  * necessary.
 243  */
 244 static void parse_system_parameter_string(struct seq_file *m)
 245 {
 246         int call_status;
 247
 248         char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
 249         if (!local_buffer) {
 250                 printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
 251                        __FILE__, __FUNCTION__, __LINE__);
 252                 return;
 253         }
 254
 255         spin_lock(&rtas_data_buf_lock);
 256         memset(rtas_data_buf, 0, SPLPAR_MAXLENGTH);
 257         call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1,
 258                                 NULL,
 259                                 SPLPAR_CHARACTERISTICS_TOKEN,
 260                                 __pa(rtas_data_buf));
 261         memcpy(local_buffer, rtas_data_buf, SPLPAR_MAXLENGTH);
 262         spin_unlock(&rtas_data_buf_lock);
 263
 264         if (call_status != 0) {
 265                 printk(KERN_INFO
 266                        "%s %s Error calling get-system-parameter (0x%x)\n",
 267                        __FILE__, __FUNCTION__, call_status);
 268         } else {
 269                 int splpar_strlen;
 270                 int idx, w_idx;
 271                 char *workbuffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
 272                 if (!workbuffer) {
 273                         printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
 274                                __FILE__, __FUNCTION__, __LINE__);
 275                         return;
 276                 }
 277 #ifdef LPARCFG_DEBUG
 278                 printk(KERN_INFO "success calling get-system-parameter \n");
 279 #endif
 280                 splpar_strlen = local_buffer[0] * 16 + local_buffer[1];
 281                 local_buffer += 2;      /* step over strlen value */
 282
 283                 memset(workbuffer, 0, SPLPAR_MAXLENGTH);
 284                 w_idx = 0;
 285                 idx = 0;
 286                 while ((*local_buffer) && (idx < splpar_strlen)) {
 287                         workbuffer[w_idx++] = local_buffer[idx++];
 288                         if ((local_buffer[idx] == ',')
 289                             || (local_buffer[idx] == '\0')) {
 290                                 workbuffer[w_idx] = '\0';
 291                                 if (w_idx) {
 292                                         /* avoid the empty string */
 293                                         seq_printf(m, "%s\n", workbuffer);
 294                                 }
 295                                 memset(workbuffer, 0, SPLPAR_MAXLENGTH);
 296                                 idx++;  /* skip the comma */
 297                                 w_idx = 0;
 298                         } else if (local_buffer[idx] == '=') {
 299                                 /* code here to replace workbuffer contents
 300                                    with different keyword strings */
 301                                 if (0 == strcmp(workbuffer, "MaxEntCap")) {
 302                                         strcpy(workbuffer,
 303                                                "partition_max_entitled_capacity");
 304                                         w_idx = strlen(workbuffer);
 305                                 }
 306                                 if (0 == strcmp(workbuffer, "MaxPlatProcs")) {
 307                                         strcpy(workbuffer,
 308                                                "system_potential_processors");
 309                                         w_idx = strlen(workbuffer);
 310                                 }
 311                         }
 312                 }
 313                 kfree(workbuffer);
 314                 local_buffer -= 2;      /* back up over strlen value */
 315         }
 316         kfree(local_buffer);
 317 }
 318
 319 static int lparcfg_count_active_processors(void);
 320
 321 /* Return the number of processors in the system.
 322  * This function reads through the device tree and counts
 323  * the virtual processors, this does not include threads.
 324  */
 325 static int lparcfg_count_active_processors(void)
 326 {
 327         struct device_node *cpus_dn = NULL;
 328         int count = 0;
 329
 330         while ((cpus_dn = of_find_node_by_type(cpus_dn, "cpu"))) {
 331 #ifdef LPARCFG_DEBUG
 332                 printk(KERN_ERR "cpus_dn %p \n", cpus_dn);
 333 #endif
 334                 count++;
 335         }
 336         return count;
 337 }
 338
 339 static int lparcfg_data(struct seq_file *m, void *v)
 340 {
 341         int partition_potential_processors;
 342         int partition_active_processors;
 343         struct device_node *rootdn;
 344         const char *model = "";
 345         const char *system_id = "";
 346         unsigned int *lp_index_ptr, lp_index = 0;
 347         struct device_node *rtas_node;
 348         int *lrdrp;
 349
 350         rootdn = find_path_device("/");
 351         if (rootdn) {
 352                 model = get_property(rootdn, "model", NULL);
 353                 system_id = get_property(rootdn, "system-id", NULL);
 354                 lp_index_ptr = (unsigned int *)
 355                     get_property(rootdn, "ibm,partition-no", NULL);
 356                 if (lp_index_ptr)
 357                         lp_index = *lp_index_ptr;
 358         }
 359
 360         seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);
 361
 362         seq_printf(m, "serial_number=%s\n", system_id);
 363
 364         seq_printf(m, "system_type=%s\n", model);
 365
 366         seq_printf(m, "partition_id=%d\n", (int)lp_index);
 367
 368         rtas_node = find_path_device("/rtas");
 369         lrdrp = (int *)get_property(rtas_node, "ibm,lrdr-capacity", NULL);
 370
 371         if (lrdrp == NULL) {
 372                 partition_potential_processors = systemcfg->processorCount;
 373         } else {
 374                 partition_potential_processors = *(lrdrp + 4);
 375         }
 376
 377         partition_active_processors = lparcfg_count_active_processors();
 378
 379         if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) {
 380                 unsigned long h_entitled, h_unallocated;
 381                 unsigned long h_aggregation, h_resource;
 382                 unsigned long pool_idle_time, pool_procs;
 383                 unsigned long purr;
 384
 385                 h_get_ppp(&h_entitled, &h_unallocated, &h_aggregation,
 386                           &h_resource);
 387
 388                 seq_printf(m, "R4=0x%lx\n", h_entitled);
 389                 seq_printf(m, "R5=0x%lx\n", h_unallocated);
 390                 seq_printf(m, "R6=0x%lx\n", h_aggregation);
 391                 seq_printf(m, "R7=0x%lx\n", h_resource);
 392
 393                 purr = get_purr();
 394
 395                 /* this call handles the ibm,get-system-parameter contents */
 396                 parse_system_parameter_string(m);
 397
 398                 seq_printf(m, "partition_entitled_capacity=%ld\n", h_entitled);
 399
 400                 seq_printf(m, "group=%ld\n", (h_aggregation >> 2 * 8) & 0xffff);
 401
 402                 seq_printf(m, "system_active_processors=%ld\n",
 403                            (h_resource >> 0 * 8) & 0xffff);
 404
 405                 /* pool related entries are apropriate for shared configs */
 406                 if (paca[0].lppaca.shared_proc) {
 407
 408                         h_pic(&pool_idle_time, &pool_procs);
 409
 410                         seq_printf(m, "pool=%ld\n",
 411                                    (h_aggregation >> 0 * 8) & 0xffff);
 412
 413                         /* report pool_capacity in percentage */
 414                         seq_printf(m, "pool_capacity=%ld\n",
 415                                    ((h_resource >> 2 * 8) & 0xffff) * 100);
 416
 417                         seq_printf(m, "pool_idle_time=%ld\n", pool_idle_time);
 418
 419                         seq_printf(m, "pool_num_procs=%ld\n", pool_procs);
 420                 }
 421
 422                 seq_printf(m, "unallocated_capacity_weight=%ld\n",
 423                            (h_resource >> 4 * 8) & 0xFF);
 424
 425                 seq_printf(m, "capacity_weight=%ld\n",
 426                            (h_resource >> 5 * 8) & 0xFF);
 427
 428                 seq_printf(m, "capped=%ld\n", (h_resource >> 6 * 8) & 0x01);
 429
 430                 seq_printf(m, "unallocated_capacity=%ld\n", h_unallocated);
 431
 432                 seq_printf(m, "purr=%ld\n", purr);
 433
 434         } else {                /* non SPLPAR case */
 435
 436                 seq_printf(m, "system_active_processors=%d\n",
 437                            partition_potential_processors);
 438
 439                 seq_printf(m, "system_potential_processors=%d\n",
 440                            partition_potential_processors);
 441
 442                 seq_printf(m, "partition_max_entitled_capacity=%d\n",
 443                            partition_potential_processors * 100);
 444
 445                 seq_printf(m, "partition_entitled_capacity=%d\n",
 446                            partition_active_processors * 100);
 447         }
 448
 449         seq_printf(m, "partition_active_processors=%d\n",
 450                    partition_active_processors);
 451
 452         seq_printf(m, "partition_potential_processors=%d\n",
 453                    partition_potential_processors);
 454
 455         seq_printf(m, "shared_processor_mode=%d\n", paca[0].lppaca.shared_proc);
 456
 457         return 0;
 458 }
 459
 460 /*
 461  * Interface for changing system parameters (variable capacity weight
 462  * and entitled capacity).  Format of input is "param_name=value";
 463  * anything after value is ignored.  Valid parameters at this time are
 464  * "partition_entitled_capacity" and "capacity_weight".  We use
 465  * H_SET_PPP to alter parameters.
 466  *
 467  * This function should be invoked only on systems with
 468  * FW_FEATURE_SPLPAR.
 469  */
 470 static ssize_t lparcfg_write(struct file *file, const char __user * buf,
 471                              size_t count, loff_t * off)
 472 {
 473         char *kbuf;
 474         char *tmp;
 475         u64 new_entitled, *new_entitled_ptr = &new_entitled;
 476         u8 new_weight, *new_weight_ptr = &new_weight;
 477
 478         unsigned long current_entitled; /* parameters for h_get_ppp */
 479         unsigned long dummy;
 480         unsigned long resource;
 481         u8 current_weight;
 482
 483         ssize_t retval = -ENOMEM;
 484
 485         kbuf = kmalloc(count, GFP_KERNEL);
 486         if (!kbuf)
 487                 goto out;
 488
 489         retval = -EFAULT;
 490         if (copy_from_user(kbuf, buf, count))
 491                 goto out;
 492
 493         retval = -EINVAL;
 494         kbuf[count - 1] = '\0';
 495         tmp = strchr(kbuf, '=');
 496         if (!tmp)
 497                 goto out;
 498
 499         *tmp++ = '\0';
 500
 501         if (!strcmp(kbuf, "partition_entitled_capacity")) {
 502                 char *endp;
 503                 *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10);
 504                 if (endp == tmp)
 505                         goto out;
 506                 new_weight_ptr = &current_weight;
 507         } else if (!strcmp(kbuf, "capacity_weight")) {
 508                 char *endp;
 509                 *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10);
 510                 if (endp == tmp)
 511                         goto out;
 512                 new_entitled_ptr = &current_entitled;
 513         } else
 514                 goto out;
 515
 516         /* Get our current parameters */
 517         retval = h_get_ppp(&current_entitled, &dummy, &dummy, &resource);
 518         if (retval) {
 519                 retval = -EIO;
 520                 goto out;
 521         }
 522
 523         current_weight = (resource >> 5 * 8) & 0xFF;
 524
 525         pr_debug("%s: current_entitled = %lu, current_weight = %lu\n",
 526                  __FUNCTION__, current_entitled, current_weight);
 527
 528         pr_debug("%s: new_entitled = %lu, new_weight = %lu\n",
 529                  __FUNCTION__, *new_entitled_ptr, *new_weight_ptr);
 530
 531         retval = plpar_hcall_norets(H_SET_PPP, *new_entitled_ptr,
 532                                     *new_weight_ptr);
 533
 534         if (retval == H_Success || retval == H_Constrained) {
 535                 retval = count;
 536         } else if (retval == H_Busy) {
 537                 retval = -EBUSY;
 538         } else if (retval == H_Hardware) {
 539                 retval = -EIO;
 540         } else if (retval == H_Parameter) {
 541                 retval = -EINVAL;
 542         } else {
 543                 printk(KERN_WARNING "%s: received unknown hv return code %ld",
 544                        __FUNCTION__, retval);
 545                 retval = -EIO;
 546         }
 547
 548       out:
 549         kfree(kbuf);
 550         return retval;
 551 }
 552
 553 #endif                          /* CONFIG_PPC_PSERIES */
 554
 555 static int lparcfg_open(struct inode *inode, struct file *file)
 556 {
 557         return single_open(file, lparcfg_data, NULL);
 558 }
 559
 560 struct file_operations lparcfg_fops = {
 561       .owner    = THIS_MODULE,
 562       .read     = seq_read,
 563       .open     = lparcfg_open,
 564       .release  = single_release,
 565 };
 566
 567 int __init lparcfg_init(void)
 568 {
 569         struct proc_dir_entry *ent;
 570         mode_t mode = S_IRUSR;
 571
 572         /* Allow writing if we have FW_FEATURE_SPLPAR */
 573         if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) {
 574                 lparcfg_fops.write = lparcfg_write;
 575                 mode |= S_IWUSR;
 576         }
 577
 578         ent = create_proc_entry("ppc64/lparcfg", mode, NULL);
 579         if (ent) {
 580                 ent->proc_fops = &lparcfg_fops;
 581                 ent->data = kmalloc(LPARCFG_BUFF_SIZE, GFP_KERNEL);
 582                 if (!ent->data) {
 583                         printk(KERN_ERR
 584                                "Failed to allocate buffer for lparcfg\n");
 585                         remove_proc_entry("lparcfg", ent->parent);
 586                         return -ENOMEM;
 587                 }
 588         } else {
 589                 printk(KERN_ERR "Failed to create ppc64/lparcfg\n");
 590                 return -EIO;
 591         }
 592
 593         proc_ppc64_lparcfg = ent;
 594         return 0;
 595 }
 596
 597 void __exit lparcfg_cleanup(void)
 598 {
 599         if (proc_ppc64_lparcfg) {
 600                 if (proc_ppc64_lparcfg->data) {
 601                         kfree(proc_ppc64_lparcfg->data);
 602                 }
 603                 remove_proc_entry("lparcfg", proc_ppc64_lparcfg->parent);
 604         }
 605 }
 606
 607 module_init(lparcfg_init);
 608 module_exit(lparcfg_cleanup);
 609 MODULE_DESCRIPTION("Interface for LPAR configuration data");
 610 MODULE_AUTHOR("Dave Engebretsen");
 611 MODULE_LICENSE("GPL");