arch/powerpc/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/hv_lp_config.h>
  30 #include <asm/lppaca.h>
  31 #include <asm/hvcall.h>
  32 #include <asm/firmware.h>
  33 #include <asm/rtas.h>
  34 #include <asm/system.h>
  35 #include <asm/time.h>
  36 #include <asm/iseries/it_exp_vpd_panel.h>
  37 #include <asm/prom.h>
  38 #include <asm/vdso_datapage.h>
  39
  40 #define MODULE_VERS "1.7"
  41 #define MODULE_NAME "lparcfg"
  42
  43 /* #define LPARCFG_DEBUG */
  44
  45 static struct proc_dir_entry *proc_ppc64_lparcfg;
  46 #define LPARCFG_BUFF_SIZE 4096
  47
  48 #ifdef CONFIG_PPC_ISERIES
  49
  50 /*
  51  * For iSeries legacy systems, the PPA purr function is available from the
  52  * emulated_time_base field in the paca.
  53  */
  54 static unsigned long get_purr(void)
  55 {
  56         unsigned long sum_purr = 0;
  57         int cpu;
  58
  59         for_each_possible_cpu(cpu) {
  60                 sum_purr += lppaca[cpu].emulated_time_base;
  61
  62 #ifdef PURR_DEBUG
  63                 printk(KERN_INFO "get_purr for cpu (%d) has value (%ld) \n",
  64                         cpu, lppaca[cpu].emulated_time_base);
  65 #endif
  66         }
  67         return sum_purr;
  68 }
  69
  70 #define lparcfg_write NULL
  71
  72 /*
  73  * Methods used to fetch LPAR data when running on an iSeries platform.
  74  */
  75 static int lparcfg_data(struct seq_file *m, void *v)
  76 {
  77         unsigned long pool_id, lp_index;
  78         int shared, entitled_capacity, max_entitled_capacity;
  79         int processors, max_processors;
  80         unsigned long purr = get_purr();
  81
  82         seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);
  83
  84         shared = (int)(get_lppaca()->shared_proc);
  85         seq_printf(m, "serial_number=%c%c%c%c%c%c%c\n",
  86                    e2a(xItExtVpdPanel.mfgID[2]),
  87                    e2a(xItExtVpdPanel.mfgID[3]),
  88                    e2a(xItExtVpdPanel.systemSerial[1]),
  89                    e2a(xItExtVpdPanel.systemSerial[2]),
  90                    e2a(xItExtVpdPanel.systemSerial[3]),
  91                    e2a(xItExtVpdPanel.systemSerial[4]),
  92                    e2a(xItExtVpdPanel.systemSerial[5]));
  93
  94         seq_printf(m, "system_type=%c%c%c%c\n",
  95                    e2a(xItExtVpdPanel.machineType[0]),
  96                    e2a(xItExtVpdPanel.machineType[1]),
  97                    e2a(xItExtVpdPanel.machineType[2]),
  98                    e2a(xItExtVpdPanel.machineType[3]));
  99
 100         lp_index = HvLpConfig_getLpIndex();
 101         seq_printf(m, "partition_id=%d\n", (int)lp_index);
 102
 103         seq_printf(m, "system_active_processors=%d\n",
 104                    (int)HvLpConfig_getSystemPhysicalProcessors());
 105
 106         seq_printf(m, "system_potential_processors=%d\n",
 107                    (int)HvLpConfig_getSystemPhysicalProcessors());
 108
 109         processors = (int)HvLpConfig_getPhysicalProcessors();
 110         seq_printf(m, "partition_active_processors=%d\n", processors);
 111
 112         max_processors = (int)HvLpConfig_getMaxPhysicalProcessors();
 113         seq_printf(m, "partition_potential_processors=%d\n", max_processors);
 114
 115         if (shared) {
 116                 entitled_capacity = HvLpConfig_getSharedProcUnits();
 117                 max_entitled_capacity = HvLpConfig_getMaxSharedProcUnits();
 118         } else {
 119                 entitled_capacity = processors * 100;
 120                 max_entitled_capacity = max_processors * 100;
 121         }
 122         seq_printf(m, "partition_entitled_capacity=%d\n", entitled_capacity);
 123
 124         seq_printf(m, "partition_max_entitled_capacity=%d\n",
 125                    max_entitled_capacity);
 126
 127         if (shared) {
 128                 pool_id = HvLpConfig_getSharedPoolIndex();
 129                 seq_printf(m, "pool=%d\n", (int)pool_id);
 130                 seq_printf(m, "pool_capacity=%d\n",
 131                            (int)(HvLpConfig_getNumProcsInSharedPool(pool_id) *
 132                                  100));
 133                 seq_printf(m, "purr=%ld\n", purr);
 134         }
 135
 136         seq_printf(m, "shared_processor_mode=%d\n", shared);
 137
 138         return 0;
 139 }
 140 #endif                          /* CONFIG_PPC_ISERIES */
 141
 142 #ifdef CONFIG_PPC_PSERIES
 143 /*
 144  * Methods used to fetch LPAR data when running on a pSeries platform.
 145  */
 146 /* find a better place for this function... */
 147 static void log_plpar_hcall_return(unsigned long rc, char *tag)
 148 {
 149         if (rc == 0)            /* success, return */
 150                 return;
 151 /* check for null tag ? */
 152         if (rc == H_HARDWARE)
 153                 printk(KERN_INFO
 154                        "plpar-hcall (%s) failed with hardware fault\n", tag);
 155         else if (rc == H_FUNCTION)
 156                 printk(KERN_INFO
 157                        "plpar-hcall (%s) failed; function not allowed\n", tag);
 158         else if (rc == H_AUTHORITY)
 159                 printk(KERN_INFO
 160                        "plpar-hcall (%s) failed; not authorized to this"
 161                        " function\n", tag);
 162         else if (rc == H_PARAMETER)
 163                 printk(KERN_INFO "plpar-hcall (%s) failed; Bad parameter(s)\n",
 164                        tag);
 165         else
 166                 printk(KERN_INFO
 167                        "plpar-hcall (%s) failed with unexpected rc(0x%lx)\n",
 168                        tag, rc);
 169
 170 }
 171
 172 /*
 173  * H_GET_PPP hcall returns info in 4 parms.
 174  *  entitled_capacity,unallocated_capacity,
 175  *  aggregation, resource_capability).
 176  *
 177  *  R4 = Entitled Processor Capacity Percentage.
 178  *  R5 = Unallocated Processor Capacity Percentage.
 179  *  R6 (AABBCCDDEEFFGGHH).
 180  *      XXXX - reserved (0)
 181  *          XXXX - reserved (0)
 182  *              XXXX - Group Number
 183  *                  XXXX - Pool Number.
 184  *  R7 (IIJJKKLLMMNNOOPP).
 185  *      XX - reserved. (0)
 186  *        XX - bit 0-6 reserved (0).   bit 7 is Capped indicator.
 187  *          XX - variable processor Capacity Weight
 188  *            XX - Unallocated Variable Processor Capacity Weight.
 189  *              XXXX - Active processors in Physical Processor Pool.
 190  *                  XXXX  - Processors active on platform.
 191  */
 192 static unsigned int h_get_ppp(unsigned long *entitled,
 193                               unsigned long *unallocated,
 194                               unsigned long *aggregation,
 195                               unsigned long *resource)
 196 {
 197         unsigned long rc;
 198         rc = plpar_hcall_4out(H_GET_PPP, 0, 0, 0, 0, entitled, unallocated,
 199                               aggregation, resource);
 200
 201         log_plpar_hcall_return(rc, "H_GET_PPP");
 202
 203         return rc;
 204 }
 205
 206 static void h_pic(unsigned long *pool_idle_time, unsigned long *num_procs)
 207 {
 208         unsigned long rc;
 209         unsigned long dummy;
 210         rc = plpar_hcall(H_PIC, 0, 0, 0, 0, pool_idle_time, num_procs, &dummy);
 211
 212         if (rc != H_AUTHORITY)
 213                 log_plpar_hcall_return(rc, "H_PIC");
 214 }
 215
 216 /* Track sum of all purrs across all processors. This is used to further */
 217 /* calculate usage values by different applications                       */
 218
 219 static unsigned long get_purr(void)
 220 {
 221         unsigned long sum_purr = 0;
 222         int cpu;
 223         struct cpu_usage *cu;
 224
 225         for_each_possible_cpu(cpu) {
 226                 cu = &per_cpu(cpu_usage_array, cpu);
 227                 sum_purr += cu->current_tb;
 228         }
 229         return sum_purr;
 230 }
 231
 232 #define SPLPAR_CHARACTERISTICS_TOKEN 20
 233 #define SPLPAR_MAXLENGTH 1026*(sizeof(char))
 234
 235 /*
 236  * parse_system_parameter_string()
 237  * Retrieve the potential_processors, max_entitled_capacity and friends
 238  * through the get-system-parameter rtas call.  Replace keyword strings as
 239  * necessary.
 240  */
 241 static void parse_system_parameter_string(struct seq_file *m)
 242 {
 243         int call_status;
 244
 245         unsigned char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
 246         if (!local_buffer) {
 247                 printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
 248                        __FILE__, __FUNCTION__, __LINE__);
 249                 return;
 250         }
 251
 252         spin_lock(&rtas_data_buf_lock);
 253         memset(rtas_data_buf, 0, SPLPAR_MAXLENGTH);
 254         call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1,
 255                                 NULL,
 256                                 SPLPAR_CHARACTERISTICS_TOKEN,
 257                                 __pa(rtas_data_buf),
 258                                 RTAS_DATA_BUF_SIZE);
 259         memcpy(local_buffer, rtas_data_buf, SPLPAR_MAXLENGTH);
 260         spin_unlock(&rtas_data_buf_lock);
 261
 262         if (call_status != 0) {
 263                 printk(KERN_INFO
 264                        "%s %s Error calling get-system-parameter (0x%x)\n",
 265                        __FILE__, __FUNCTION__, call_status);
 266         } else {
 267                 int splpar_strlen;
 268                 int idx, w_idx;
 269                 char *workbuffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
 270                 if (!workbuffer) {
 271                         printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
 272                                __FILE__, __FUNCTION__, __LINE__);
 273                         kfree(local_buffer);
 274                         return;
 275                 }
 276 #ifdef LPARCFG_DEBUG
 277                 printk(KERN_INFO "success calling get-system-parameter \n");
 278 #endif
 279                 splpar_strlen = local_buffer[0] * 256 + local_buffer[1];
 280                 local_buffer += 2;      /* step over strlen value */
 281
 282                 memset(workbuffer, 0, SPLPAR_MAXLENGTH);
 283                 w_idx = 0;
 284                 idx = 0;
 285                 while ((*local_buffer) && (idx < splpar_strlen)) {
 286                         workbuffer[w_idx++] = local_buffer[idx++];
 287                         if ((local_buffer[idx] == ',')
 288                             || (local_buffer[idx] == '\0')) {
 289                                 workbuffer[w_idx] = '\0';
 290                                 if (w_idx) {
 291                                         /* avoid the empty string */
 292                                         seq_printf(m, "%s\n", workbuffer);
 293                                 }
 294                                 memset(workbuffer, 0, SPLPAR_MAXLENGTH);
 295                                 idx++;  /* skip the comma */
 296                                 w_idx = 0;
 297                         } else if (local_buffer[idx] == '=') {
 298                                 /* code here to replace workbuffer contents
 299                                    with different keyword strings */
 300                                 if (0 == strcmp(workbuffer, "MaxEntCap")) {
 301                                         strcpy(workbuffer,
 302                                                "partition_max_entitled_capacity");
 303                                         w_idx = strlen(workbuffer);
 304                                 }
 305                                 if (0 == strcmp(workbuffer, "MaxPlatProcs")) {
 306                                         strcpy(workbuffer,
 307                                                "system_potential_processors");
 308                                         w_idx = strlen(workbuffer);
 309                                 }
 310                         }
 311                 }
 312                 kfree(workbuffer);
 313                 local_buffer -= 2;      /* back up over strlen value */
 314         }
 315         kfree(local_buffer);
 316 }
 317
 318 /* Return the number of processors in the system.
 319  * This function reads through the device tree and counts
 320  * the virtual processors, this does not include threads.
 321  */
 322 static int lparcfg_count_active_processors(void)
 323 {
 324         struct device_node *cpus_dn = NULL;
 325         int count = 0;
 326
 327         while ((cpus_dn = of_find_node_by_type(cpus_dn, "cpu"))) {
 328 #ifdef LPARCFG_DEBUG
 329                 printk(KERN_ERR "cpus_dn %p \n", cpus_dn);
 330 #endif
 331                 count++;
 332         }
 333         return count;
 334 }
 335
 336 static int lparcfg_data(struct seq_file *m, void *v)
 337 {
 338         int partition_potential_processors;
 339         int partition_active_processors;
 340         struct device_node *rootdn;
 341         const char *model = "";
 342         const char *system_id = "";
 343         unsigned int *lp_index_ptr, lp_index = 0;
 344         struct device_node *rtas_node;
 345         int *lrdrp = NULL;
 346
 347         rootdn = find_path_device("/");
 348         if (rootdn) {
 349                 model = get_property(rootdn, "model", NULL);
 350                 system_id = get_property(rootdn, "system-id", NULL);
 351                 lp_index_ptr = (unsigned int *)
 352                     get_property(rootdn, "ibm,partition-no", NULL);
 353                 if (lp_index_ptr)
 354                         lp_index = *lp_index_ptr;
 355         }
 356
 357         seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);
 358
 359         seq_printf(m, "serial_number=%s\n", system_id);
 360
 361         seq_printf(m, "system_type=%s\n", model);
 362
 363         seq_printf(m, "partition_id=%d\n", (int)lp_index);
 364
 365         rtas_node = find_path_device("/rtas");
 366         if (rtas_node)
 367                 lrdrp = (int *)get_property(rtas_node, "ibm,lrdr-capacity",
 368                                             NULL);
 369
 370         if (lrdrp == NULL) {
 371                 partition_potential_processors = vdso_data->processorCount;
 372         } else {
 373                 partition_potential_processors = *(lrdrp + 4);
 374         }
 375
 376         partition_active_processors = lparcfg_count_active_processors();
 377
 378         if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
 379                 unsigned long h_entitled, h_unallocated;
 380                 unsigned long h_aggregation, h_resource;
 381                 unsigned long pool_idle_time, pool_procs;
 382                 unsigned long purr;
 383
 384                 h_get_ppp(&h_entitled, &h_unallocated, &h_aggregation,
 385                           &h_resource);
 386
 387                 seq_printf(m, "R4=0x%lx\n", h_entitled);
 388                 seq_printf(m, "R5=0x%lx\n", h_unallocated);
 389                 seq_printf(m, "R6=0x%lx\n", h_aggregation);
 390                 seq_printf(m, "R7=0x%lx\n", h_resource);
 391
 392                 purr = get_purr();
 393
 394                 /* this call handles the ibm,get-system-parameter contents */
 395                 parse_system_parameter_string(m);
 396
 397                 seq_printf(m, "partition_entitled_capacity=%ld\n", h_entitled);
 398
 399                 seq_printf(m, "group=%ld\n", (h_aggregation >> 2 * 8) & 0xffff);
 400
 401                 seq_printf(m, "system_active_processors=%ld\n",
 402                            (h_resource >> 0 * 8) & 0xffff);
 403
 404                 /* pool related entries are apropriate for shared configs */
 405                 if (lppaca[0].shared_proc) {
 406
 407                         h_pic(&pool_idle_time, &pool_procs);
 408
 409                         seq_printf(m, "pool=%ld\n",
 410                                    (h_aggregation >> 0 * 8) & 0xffff);
 411
 412                         /* report pool_capacity in percentage */
 413                         seq_printf(m, "pool_capacity=%ld\n",
 414                                    ((h_resource >> 2 * 8) & 0xffff) * 100);
 415
 416                         seq_printf(m, "pool_idle_time=%ld\n", pool_idle_time);
 417
 418                         seq_printf(m, "pool_num_procs=%ld\n", pool_procs);
 419                 }
 420
 421                 seq_printf(m, "unallocated_capacity_weight=%ld\n",
 422                            (h_resource >> 4 * 8) & 0xFF);
 423
 424                 seq_printf(m, "capacity_weight=%ld\n",
 425                            (h_resource >> 5 * 8) & 0xFF);
 426
 427                 seq_printf(m, "capped=%ld\n", (h_resource >> 6 * 8) & 0x01);
 428
 429                 seq_printf(m, "unallocated_capacity=%ld\n", h_unallocated);
 430
 431                 seq_printf(m, "purr=%ld\n", purr);
 432
 433         } else {                /* non SPLPAR case */
 434
 435                 seq_printf(m, "system_active_processors=%d\n",
 436                            partition_potential_processors);
 437
 438                 seq_printf(m, "system_potential_processors=%d\n",
 439                            partition_potential_processors);
 440
 441                 seq_printf(m, "partition_max_entitled_capacity=%d\n",
 442                            partition_potential_processors * 100);
 443
 444                 seq_printf(m, "partition_entitled_capacity=%d\n",
 445                            partition_active_processors * 100);
 446         }
 447
 448         seq_printf(m, "partition_active_processors=%d\n",
 449                    partition_active_processors);
 450
 451         seq_printf(m, "partition_potential_processors=%d\n",
 452                    partition_potential_processors);
 453
 454         seq_printf(m, "shared_processor_mode=%d\n", lppaca[0].shared_proc);
 455
 456         return 0;
 457 }
 458
 459 /*
 460  * Interface for changing system parameters (variable capacity weight
 461  * and entitled capacity).  Format of input is "param_name=value";
 462  * anything after value is ignored.  Valid parameters at this time are
 463  * "partition_entitled_capacity" and "capacity_weight".  We use
 464  * H_SET_PPP to alter parameters.
 465  *
 466  * This function should be invoked only on systems with
 467  * FW_FEATURE_SPLPAR.
 468  */
 469 static ssize_t lparcfg_write(struct file *file, const char __user * buf,
 470                              size_t count, loff_t * off)
 471 {
 472         char *kbuf;
 473         char *tmp;
 474         u64 new_entitled, *new_entitled_ptr = &new_entitled;
 475         u8 new_weight, *new_weight_ptr = &new_weight;
 476
 477         unsigned long current_entitled; /* parameters for h_get_ppp */
 478         unsigned long dummy;
 479         unsigned long resource;
 480         u8 current_weight;
 481
 482         ssize_t retval = -ENOMEM;
 483
 484         kbuf = kmalloc(count, GFP_KERNEL);
 485         if (!kbuf)
 486                 goto out;
 487
 488         retval = -EFAULT;
 489         if (copy_from_user(kbuf, buf, count))
 490                 goto out;
 491
 492         retval = -EINVAL;
 493         kbuf[count - 1] = '\0';
 494         tmp = strchr(kbuf, '=');
 495         if (!tmp)
 496                 goto out;
 497
 498         *tmp++ = '\0';
 499
 500         if (!strcmp(kbuf, "partition_entitled_capacity")) {
 501                 char *endp;
 502                 *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10);
 503                 if (endp == tmp)
 504                         goto out;
 505                 new_weight_ptr = &current_weight;
 506         } else if (!strcmp(kbuf, "capacity_weight")) {
 507                 char *endp;
 508                 *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10);
 509                 if (endp == tmp)
 510                         goto out;
 511                 new_entitled_ptr = &current_entitled;
 512         } else
 513                 goto out;
 514
 515         /* Get our current parameters */
 516         retval = h_get_ppp(&current_entitled, &dummy, &dummy, &resource);
 517         if (retval) {
 518                 retval = -EIO;
 519                 goto out;
 520         }
 521
 522         current_weight = (resource >> 5 * 8) & 0xFF;
 523
 524         pr_debug("%s: current_entitled = %lu, current_weight = %lu\n",
 525                  __FUNCTION__, current_entitled, current_weight);
 526
 527         pr_debug("%s: new_entitled = %lu, new_weight = %lu\n",
 528                  __FUNCTION__, *new_entitled_ptr, *new_weight_ptr);
 529
 530         retval = plpar_hcall_norets(H_SET_PPP, *new_entitled_ptr,
 531                                     *new_weight_ptr);
 532
 533         if (retval == H_SUCCESS || retval == H_CONSTRAINED) {
 534                 retval = count;
 535         } else if (retval == H_BUSY) {
 536                 retval = -EBUSY;
 537         } else if (retval == H_HARDWARE) {
 538                 retval = -EIO;
 539         } else if (retval == H_PARAMETER) {
 540                 retval = -EINVAL;
 541         } else {
 542                 printk(KERN_WARNING "%s: received unknown hv return code %ld",
 543                        __FUNCTION__, retval);
 544                 retval = -EIO;
 545         }
 546
 547 out:
 548         kfree(kbuf);
 549         return retval;
 550 }
 551
 552 #endif                          /* CONFIG_PPC_PSERIES */
 553
 554 static int lparcfg_open(struct inode *inode, struct file *file)
 555 {
 556         return single_open(file, lparcfg_data, NULL);
 557 }
 558
 559 struct file_operations lparcfg_fops = {
 560         .owner          = THIS_MODULE,
 561         .read           = seq_read,
 562         .open           = lparcfg_open,
 563         .release        = single_release,
 564 };
 565
 566 int __init lparcfg_init(void)
 567 {
 568         struct proc_dir_entry *ent;
 569         mode_t mode = S_IRUSR | S_IRGRP | S_IROTH;
 570
 571         /* Allow writing if we have FW_FEATURE_SPLPAR */
 572         if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
 573                 lparcfg_fops.write = lparcfg_write;
 574                 mode |= S_IWUSR;
 575         }
 576
 577         ent = create_proc_entry("ppc64/lparcfg", mode, NULL);
 578         if (ent) {
 579                 ent->proc_fops = &lparcfg_fops;
 580                 ent->data = kmalloc(LPARCFG_BUFF_SIZE, GFP_KERNEL);
 581                 if (!ent->data) {
 582                         printk(KERN_ERR
 583                                "Failed to allocate buffer for lparcfg\n");
 584                         remove_proc_entry("lparcfg", ent->parent);
 585                         return -ENOMEM;
 586                 }
 587         } else {
 588                 printk(KERN_ERR "Failed to create ppc64/lparcfg\n");
 589                 return -EIO;
 590         }
 591
 592         proc_ppc64_lparcfg = ent;
 593         return 0;
 594 }
 595
 596 void __exit lparcfg_cleanup(void)
 597 {
 598         if (proc_ppc64_lparcfg) {
 599                 kfree(proc_ppc64_lparcfg->data);
 600                 remove_proc_entry("lparcfg", proc_ppc64_lparcfg->parent);
 601         }
 602 }
 603
 604 module_init(lparcfg_init);
 605 module_exit(lparcfg_cleanup);
 606 MODULE_DESCRIPTION("Interface for LPAR configuration data");
 607 MODULE_AUTHOR("Dave Engebretsen");
 608 MODULE_LICENSE("GPL");