arch/powerpc/platforms/iseries/mf.c

   1 /*
   2  * Copyright (C) 2001 Troy D. Armstrong  IBM Corporation
   3  * Copyright (C) 2004-2005 Stephen Rothwell  IBM Corporation
   4  *
   5  * This modules exists as an interface between a Linux secondary partition
   6  * running on an iSeries and the primary partition's Virtual Service
   7  * Processor (VSP) object.  The VSP has final authority over powering on/off
   8  * all partitions in the iSeries.  It also provides miscellaneous low-level
   9  * machine facility type operations.
  10  *
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  25  */
  26
  27 #include <linux/types.h>
  28 #include <linux/errno.h>
  29 #include <linux/kernel.h>
  30 #include <linux/init.h>
  31 #include <linux/completion.h>
  32 #include <linux/delay.h>
  33 #include <linux/dma-mapping.h>
  34 #include <linux/bcd.h>
  35
  36 #include <asm/time.h>
  37 #include <asm/uaccess.h>
  38 #include <asm/paca.h>
  39 #include <asm/iSeries/vio.h>
  40 #include <asm/iSeries/mf.h>
  41 #include <asm/iSeries/HvLpConfig.h>
  42 #include <asm/iSeries/ItLpQueue.h>
  43
  44 #include "setup.h"
  45
  46 extern int piranha_simulator;
  47
  48 /*
  49  * This is the structure layout for the Machine Facilites LPAR event
  50  * flows.
  51  */
  52 struct vsp_cmd_data {
  53         u64 token;
  54         u16 cmd;
  55         HvLpIndex lp_index;
  56         u8 result_code;
  57         u32 reserved;
  58         union {
  59                 u64 state;      /* GetStateOut */
  60                 u64 ipl_type;   /* GetIplTypeOut, Function02SelectIplTypeIn */
  61                 u64 ipl_mode;   /* GetIplModeOut, Function02SelectIplModeIn */
  62                 u64 page[4];    /* GetSrcHistoryIn */
  63                 u64 flag;       /* GetAutoIplWhenPrimaryIplsOut,
  64                                    SetAutoIplWhenPrimaryIplsIn,
  65                                    WhiteButtonPowerOffIn,
  66                                    Function08FastPowerOffIn,
  67                                    IsSpcnRackPowerIncompleteOut */
  68                 struct {
  69                         u64 token;
  70                         u64 address_type;
  71                         u64 side;
  72                         u32 length;
  73                         u32 offset;
  74                 } kern;         /* SetKernelImageIn, GetKernelImageIn,
  75                                    SetKernelCmdLineIn, GetKernelCmdLineIn */
  76                 u32 length_out; /* GetKernelImageOut, GetKernelCmdLineOut */
  77                 u8 reserved[80];
  78         } sub_data;
  79 };
  80
  81 struct vsp_rsp_data {
  82         struct completion com;
  83         struct vsp_cmd_data *response;
  84 };
  85
  86 struct alloc_data {
  87         u16 size;
  88         u16 type;
  89         u32 count;
  90         u16 reserved1;
  91         u8 reserved2;
  92         HvLpIndex target_lp;
  93 };
  94
  95 struct ce_msg_data;
  96
  97 typedef void (*ce_msg_comp_hdlr)(void *token, struct ce_msg_data *vsp_cmd_rsp);
  98
  99 struct ce_msg_comp_data {
 100         ce_msg_comp_hdlr handler;
 101         void *token;
 102 };
 103
 104 struct ce_msg_data {
 105         u8 ce_msg[12];
 106         char reserved[4];
 107         struct ce_msg_comp_data *completion;
 108 };
 109
 110 struct io_mf_lp_event {
 111         struct HvLpEvent hp_lp_event;
 112         u16 subtype_result_code;
 113         u16 reserved1;
 114         u32 reserved2;
 115         union {
 116                 struct alloc_data alloc;
 117                 struct ce_msg_data ce_msg;
 118                 struct vsp_cmd_data vsp_cmd;
 119         } data;
 120 };
 121
 122 #define subtype_data(a, b, c, d)        \
 123                 (((a) << 24) + ((b) << 16) + ((c) << 8) + (d))
 124
 125 /*
 126  * All outgoing event traffic is kept on a FIFO queue.  The first
 127  * pointer points to the one that is outstanding, and all new
 128  * requests get stuck on the end.  Also, we keep a certain number of
 129  * preallocated pending events so that we can operate very early in
 130  * the boot up sequence (before kmalloc is ready).
 131  */
 132 struct pending_event {
 133         struct pending_event *next;
 134         struct io_mf_lp_event event;
 135         MFCompleteHandler hdlr;
 136         char dma_data[72];
 137         unsigned dma_data_length;
 138         unsigned remote_address;
 139 };
 140 static spinlock_t pending_event_spinlock;
 141 static struct pending_event *pending_event_head;
 142 static struct pending_event *pending_event_tail;
 143 static struct pending_event *pending_event_avail;
 144 static struct pending_event pending_event_prealloc[16];
 145
 146 /*
 147  * Put a pending event onto the available queue, so it can get reused.
 148  * Attention! You must have the pending_event_spinlock before calling!
 149  */
 150 static void free_pending_event(struct pending_event *ev)
 151 {
 152         if (ev != NULL) {
 153                 ev->next = pending_event_avail;
 154                 pending_event_avail = ev;
 155         }
 156 }
 157
 158 /*
 159  * Enqueue the outbound event onto the stack.  If the queue was
 160  * empty to begin with, we must also issue it via the Hypervisor
 161  * interface.  There is a section of code below that will touch
 162  * the first stack pointer without the protection of the pending_event_spinlock.
 163  * This is OK, because we know that nobody else will be modifying
 164  * the first pointer when we do this.
 165  */
 166 static int signal_event(struct pending_event *ev)
 167 {
 168         int rc = 0;
 169         unsigned long flags;
 170         int go = 1;
 171         struct pending_event *ev1;
 172         HvLpEvent_Rc hv_rc;
 173
 174         /* enqueue the event */
 175         if (ev != NULL) {
 176                 ev->next = NULL;
 177                 spin_lock_irqsave(&pending_event_spinlock, flags);
 178                 if (pending_event_head == NULL)
 179                         pending_event_head = ev;
 180                 else {
 181                         go = 0;
 182                         pending_event_tail->next = ev;
 183                 }
 184                 pending_event_tail = ev;
 185                 spin_unlock_irqrestore(&pending_event_spinlock, flags);
 186         }
 187
 188         /* send the event */
 189         while (go) {
 190                 go = 0;
 191
 192                 /* any DMA data to send beforehand? */
 193                 if (pending_event_head->dma_data_length > 0)
 194                         HvCallEvent_dmaToSp(pending_event_head->dma_data,
 195                                         pending_event_head->remote_address,
 196                                         pending_event_head->dma_data_length,
 197                                         HvLpDma_Direction_LocalToRemote);
 198
 199                 hv_rc = HvCallEvent_signalLpEvent(
 200                                 &pending_event_head->event.hp_lp_event);
 201                 if (hv_rc != HvLpEvent_Rc_Good) {
 202                         printk(KERN_ERR "mf.c: HvCallEvent_signalLpEvent() "
 203                                         "failed with %d\n", (int)hv_rc);
 204
 205                         spin_lock_irqsave(&pending_event_spinlock, flags);
 206                         ev1 = pending_event_head;
 207                         pending_event_head = pending_event_head->next;
 208                         if (pending_event_head != NULL)
 209                                 go = 1;
 210                         spin_unlock_irqrestore(&pending_event_spinlock, flags);
 211
 212                         if (ev1 == ev)
 213                                 rc = -EIO;
 214                         else if (ev1->hdlr != NULL)
 215                                 (*ev1->hdlr)((void *)ev1->event.hp_lp_event.xCorrelationToken, -EIO);
 216
 217                         spin_lock_irqsave(&pending_event_spinlock, flags);
 218                         free_pending_event(ev1);
 219                         spin_unlock_irqrestore(&pending_event_spinlock, flags);
 220                 }
 221         }
 222
 223         return rc;
 224 }
 225
 226 /*
 227  * Allocate a new pending_event structure, and initialize it.
 228  */
 229 static struct pending_event *new_pending_event(void)
 230 {
 231         struct pending_event *ev = NULL;
 232         HvLpIndex primary_lp = HvLpConfig_getPrimaryLpIndex();
 233         unsigned long flags;
 234         struct HvLpEvent *hev;
 235
 236         spin_lock_irqsave(&pending_event_spinlock, flags);
 237         if (pending_event_avail != NULL) {
 238                 ev = pending_event_avail;
 239                 pending_event_avail = pending_event_avail->next;
 240         }
 241         spin_unlock_irqrestore(&pending_event_spinlock, flags);
 242         if (ev == NULL) {
 243                 ev = kmalloc(sizeof(struct pending_event), GFP_ATOMIC);
 244                 if (ev == NULL) {
 245                         printk(KERN_ERR "mf.c: unable to kmalloc %ld bytes\n",
 246                                         sizeof(struct pending_event));
 247                         return NULL;
 248                 }
 249         }
 250         memset(ev, 0, sizeof(struct pending_event));
 251         hev = &ev->event.hp_lp_event;
 252         hev->xFlags.xValid = 1;
 253         hev->xFlags.xAckType = HvLpEvent_AckType_ImmediateAck;
 254         hev->xFlags.xAckInd = HvLpEvent_AckInd_DoAck;
 255         hev->xFlags.xFunction = HvLpEvent_Function_Int;
 256         hev->xType = HvLpEvent_Type_MachineFac;
 257         hev->xSourceLp = HvLpConfig_getLpIndex();
 258         hev->xTargetLp = primary_lp;
 259         hev->xSizeMinus1 = sizeof(ev->event) - 1;
 260         hev->xRc = HvLpEvent_Rc_Good;
 261         hev->xSourceInstanceId = HvCallEvent_getSourceLpInstanceId(primary_lp,
 262                         HvLpEvent_Type_MachineFac);
 263         hev->xTargetInstanceId = HvCallEvent_getTargetLpInstanceId(primary_lp,
 264                         HvLpEvent_Type_MachineFac);
 265
 266         return ev;
 267 }
 268
 269 static int signal_vsp_instruction(struct vsp_cmd_data *vsp_cmd)
 270 {
 271         struct pending_event *ev = new_pending_event();
 272         int rc;
 273         struct vsp_rsp_data response;
 274
 275         if (ev == NULL)
 276                 return -ENOMEM;
 277
 278         init_completion(&response.com);
 279         response.response = vsp_cmd;
 280         ev->event.hp_lp_event.xSubtype = 6;
 281         ev->event.hp_lp_event.x.xSubtypeData =
 282                 subtype_data('M', 'F',  'V',  'I');
 283         ev->event.data.vsp_cmd.token = (u64)&response;
 284         ev->event.data.vsp_cmd.cmd = vsp_cmd->cmd;
 285         ev->event.data.vsp_cmd.lp_index = HvLpConfig_getLpIndex();
 286         ev->event.data.vsp_cmd.result_code = 0xFF;
 287         ev->event.data.vsp_cmd.reserved = 0;
 288         memcpy(&(ev->event.data.vsp_cmd.sub_data),
 289                         &(vsp_cmd->sub_data), sizeof(vsp_cmd->sub_data));
 290         mb();
 291
 292         rc = signal_event(ev);
 293         if (rc == 0)
 294                 wait_for_completion(&response.com);
 295         return rc;
 296 }
 297
 298
 299 /*
 300  * Send a 12-byte CE message to the primary partition VSP object
 301  */
 302 static int signal_ce_msg(char *ce_msg, struct ce_msg_comp_data *completion)
 303 {
 304         struct pending_event *ev = new_pending_event();
 305
 306         if (ev == NULL)
 307                 return -ENOMEM;
 308
 309         ev->event.hp_lp_event.xSubtype = 0;
 310         ev->event.hp_lp_event.x.xSubtypeData =
 311                 subtype_data('M',  'F',  'C',  'E');
 312         memcpy(ev->event.data.ce_msg.ce_msg, ce_msg, 12);
 313         ev->event.data.ce_msg.completion = completion;
 314         return signal_event(ev);
 315 }
 316
 317 /*
 318  * Send a 12-byte CE message (with no data) to the primary partition VSP object
 319  */
 320 static int signal_ce_msg_simple(u8 ce_op, struct ce_msg_comp_data *completion)
 321 {
 322         u8 ce_msg[12];
 323
 324         memset(ce_msg, 0, sizeof(ce_msg));
 325         ce_msg[3] = ce_op;
 326         return signal_ce_msg(ce_msg, completion);
 327 }
 328
 329 /*
 330  * Send a 12-byte CE message and DMA data to the primary partition VSP object
 331  */
 332 static int dma_and_signal_ce_msg(char *ce_msg,
 333                 struct ce_msg_comp_data *completion, void *dma_data,
 334                 unsigned dma_data_length, unsigned remote_address)
 335 {
 336         struct pending_event *ev = new_pending_event();
 337
 338         if (ev == NULL)
 339                 return -ENOMEM;
 340
 341         ev->event.hp_lp_event.xSubtype = 0;
 342         ev->event.hp_lp_event.x.xSubtypeData =
 343                 subtype_data('M', 'F', 'C', 'E');
 344         memcpy(ev->event.data.ce_msg.ce_msg, ce_msg, 12);
 345         ev->event.data.ce_msg.completion = completion;
 346         memcpy(ev->dma_data, dma_data, dma_data_length);
 347         ev->dma_data_length = dma_data_length;
 348         ev->remote_address = remote_address;
 349         return signal_event(ev);
 350 }
 351
 352 /*
 353  * Initiate a nice (hopefully) shutdown of Linux.  We simply are
 354  * going to try and send the init process a SIGINT signal.  If
 355  * this fails (why?), we'll simply force it off in a not-so-nice
 356  * manner.
 357  */
 358 static int shutdown(void)
 359 {
 360         int rc = kill_proc(1, SIGINT, 1);
 361
 362         if (rc) {
 363                 printk(KERN_ALERT "mf.c: SIGINT to init failed (%d), "
 364                                 "hard shutdown commencing\n", rc);
 365                 mf_power_off();
 366         } else
 367                 printk(KERN_INFO "mf.c: init has been successfully notified "
 368                                 "to proceed with shutdown\n");
 369         return rc;
 370 }
 371
 372 /*
 373  * The primary partition VSP object is sending us a new
 374  * event flow.  Handle it...
 375  */
 376 static void handle_int(struct io_mf_lp_event *event)
 377 {
 378         struct ce_msg_data *ce_msg_data;
 379         struct ce_msg_data *pce_msg_data;
 380         unsigned long flags;
 381         struct pending_event *pev;
 382
 383         /* ack the interrupt */
 384         event->hp_lp_event.xRc = HvLpEvent_Rc_Good;
 385         HvCallEvent_ackLpEvent(&event->hp_lp_event);
 386
 387         /* process interrupt */
 388         switch (event->hp_lp_event.xSubtype) {
 389         case 0: /* CE message */
 390                 ce_msg_data = &event->data.ce_msg;
 391                 switch (ce_msg_data->ce_msg[3]) {
 392                 case 0x5B:      /* power control notification */
 393                         if ((ce_msg_data->ce_msg[5] & 0x20) != 0) {
 394                                 printk(KERN_INFO "mf.c: Commencing partition shutdown\n");
 395                                 if (shutdown() == 0)
 396                                         signal_ce_msg_simple(0xDB, NULL);
 397                         }
 398                         break;
 399                 case 0xC0:      /* get time */
 400                         spin_lock_irqsave(&pending_event_spinlock, flags);
 401                         pev = pending_event_head;
 402                         if (pev != NULL)
 403                                 pending_event_head = pending_event_head->next;
 404                         spin_unlock_irqrestore(&pending_event_spinlock, flags);
 405                         if (pev == NULL)
 406                                 break;
 407                         pce_msg_data = &pev->event.data.ce_msg;
 408                         if (pce_msg_data->ce_msg[3] != 0x40)
 409                                 break;
 410                         if (pce_msg_data->completion != NULL) {
 411                                 ce_msg_comp_hdlr handler =
 412                                         pce_msg_data->completion->handler;
 413                                 void *token = pce_msg_data->completion->token;
 414
 415                                 if (handler != NULL)
 416                                         (*handler)(token, ce_msg_data);
 417                         }
 418                         spin_lock_irqsave(&pending_event_spinlock, flags);
 419                         free_pending_event(pev);
 420                         spin_unlock_irqrestore(&pending_event_spinlock, flags);
 421                         /* send next waiting event */
 422                         if (pending_event_head != NULL)
 423                                 signal_event(NULL);
 424                         break;
 425                 }
 426                 break;
 427         case 1: /* IT sys shutdown */
 428                 printk(KERN_INFO "mf.c: Commencing system shutdown\n");
 429                 shutdown();
 430                 break;
 431         }
 432 }
 433
 434 /*
 435  * The primary partition VSP object is acknowledging the receipt
 436  * of a flow we sent to them.  If there are other flows queued
 437  * up, we must send another one now...
 438  */
 439 static void handle_ack(struct io_mf_lp_event *event)
 440 {
 441         unsigned long flags;
 442         struct pending_event *two = NULL;
 443         unsigned long free_it = 0;
 444         struct ce_msg_data *ce_msg_data;
 445         struct ce_msg_data *pce_msg_data;
 446         struct vsp_rsp_data *rsp;
 447
 448         /* handle current event */
 449         if (pending_event_head == NULL) {
 450                 printk(KERN_ERR "mf.c: stack empty for receiving ack\n");
 451                 return;
 452         }
 453
 454         switch (event->hp_lp_event.xSubtype) {
 455         case 0:     /* CE msg */
 456                 ce_msg_data = &event->data.ce_msg;
 457                 if (ce_msg_data->ce_msg[3] != 0x40) {
 458                         free_it = 1;
 459                         break;
 460                 }
 461                 if (ce_msg_data->ce_msg[2] == 0)
 462                         break;
 463                 free_it = 1;
 464                 pce_msg_data = &pending_event_head->event.data.ce_msg;
 465                 if (pce_msg_data->completion != NULL) {
 466                         ce_msg_comp_hdlr handler =
 467                                 pce_msg_data->completion->handler;
 468                         void *token = pce_msg_data->completion->token;
 469
 470                         if (handler != NULL)
 471                                 (*handler)(token, ce_msg_data);
 472                 }
 473                 break;
 474         case 4: /* allocate */
 475         case 5: /* deallocate */
 476                 if (pending_event_head->hdlr != NULL)
 477                         (*pending_event_head->hdlr)((void *)event->hp_lp_event.xCorrelationToken, event->data.alloc.count);
 478                 free_it = 1;
 479                 break;
 480         case 6:
 481                 free_it = 1;
 482                 rsp = (struct vsp_rsp_data *)event->data.vsp_cmd.token;
 483                 if (rsp == NULL) {
 484                         printk(KERN_ERR "mf.c: no rsp\n");
 485                         break;
 486                 }
 487                 if (rsp->response != NULL)
 488                         memcpy(rsp->response, &event->data.vsp_cmd,
 489                                         sizeof(event->data.vsp_cmd));
 490                 complete(&rsp->com);
 491                 break;
 492         }
 493
 494         /* remove from queue */
 495         spin_lock_irqsave(&pending_event_spinlock, flags);
 496         if ((pending_event_head != NULL) && (free_it == 1)) {
 497                 struct pending_event *oldHead = pending_event_head;
 498
 499                 pending_event_head = pending_event_head->next;
 500                 two = pending_event_head;
 501                 free_pending_event(oldHead);
 502         }
 503         spin_unlock_irqrestore(&pending_event_spinlock, flags);
 504
 505         /* send next waiting event */
 506         if (two != NULL)
 507                 signal_event(NULL);
 508 }
 509
 510 /*
 511  * This is the generic event handler we are registering with
 512  * the Hypervisor.  Ensure the flows are for us, and then
 513  * parse it enough to know if it is an interrupt or an
 514  * acknowledge.
 515  */
 516 static void hv_handler(struct HvLpEvent *event, struct pt_regs *regs)
 517 {
 518         if ((event != NULL) && (event->xType == HvLpEvent_Type_MachineFac)) {
 519                 switch(event->xFlags.xFunction) {
 520                 case HvLpEvent_Function_Ack:
 521                         handle_ack((struct io_mf_lp_event *)event);
 522                         break;
 523                 case HvLpEvent_Function_Int:
 524                         handle_int((struct io_mf_lp_event *)event);
 525                         break;
 526                 default:
 527                         printk(KERN_ERR "mf.c: non ack/int event received\n");
 528                         break;
 529                 }
 530         } else
 531                 printk(KERN_ERR "mf.c: alien event received\n");
 532 }
 533
 534 /*
 535  * Global kernel interface to allocate and seed events into the
 536  * Hypervisor.
 537  */
 538 void mf_allocate_lp_events(HvLpIndex target_lp, HvLpEvent_Type type,
 539                 unsigned size, unsigned count, MFCompleteHandler hdlr,
 540                 void *user_token)
 541 {
 542         struct pending_event *ev = new_pending_event();
 543         int rc;
 544
 545         if (ev == NULL) {
 546                 rc = -ENOMEM;
 547         } else {
 548                 ev->event.hp_lp_event.xSubtype = 4;
 549                 ev->event.hp_lp_event.xCorrelationToken = (u64)user_token;
 550                 ev->event.hp_lp_event.x.xSubtypeData =
 551                         subtype_data('M', 'F', 'M', 'A');
 552                 ev->event.data.alloc.target_lp = target_lp;
 553                 ev->event.data.alloc.type = type;
 554                 ev->event.data.alloc.size = size;
 555                 ev->event.data.alloc.count = count;
 556                 ev->hdlr = hdlr;
 557                 rc = signal_event(ev);
 558         }
 559         if ((rc != 0) && (hdlr != NULL))
 560                 (*hdlr)(user_token, rc);
 561 }
 562 EXPORT_SYMBOL(mf_allocate_lp_events);
 563
 564 /*
 565  * Global kernel interface to unseed and deallocate events already in
 566  * Hypervisor.
 567  */
 568 void mf_deallocate_lp_events(HvLpIndex target_lp, HvLpEvent_Type type,
 569                 unsigned count, MFCompleteHandler hdlr, void *user_token)
 570 {
 571         struct pending_event *ev = new_pending_event();
 572         int rc;
 573
 574         if (ev == NULL)
 575                 rc = -ENOMEM;
 576         else {
 577                 ev->event.hp_lp_event.xSubtype = 5;
 578                 ev->event.hp_lp_event.xCorrelationToken = (u64)user_token;
 579                 ev->event.hp_lp_event.x.xSubtypeData =
 580                         subtype_data('M', 'F', 'M', 'D');
 581                 ev->event.data.alloc.target_lp = target_lp;
 582                 ev->event.data.alloc.type = type;
 583                 ev->event.data.alloc.count = count;
 584                 ev->hdlr = hdlr;
 585                 rc = signal_event(ev);
 586         }
 587         if ((rc != 0) && (hdlr != NULL))
 588                 (*hdlr)(user_token, rc);
 589 }
 590 EXPORT_SYMBOL(mf_deallocate_lp_events);
 591
 592 /*
 593  * Global kernel interface to tell the VSP object in the primary
 594  * partition to power this partition off.
 595  */
 596 void mf_power_off(void)
 597 {
 598         printk(KERN_INFO "mf.c: Down it goes...\n");
 599         signal_ce_msg_simple(0x4d, NULL);
 600         for (;;)
 601                 ;
 602 }
 603
 604 /*
 605  * Global kernel interface to tell the VSP object in the primary
 606  * partition to reboot this partition.
 607  */
 608 void mf_reboot(void)
 609 {
 610         printk(KERN_INFO "mf.c: Preparing to bounce...\n");
 611         signal_ce_msg_simple(0x4e, NULL);
 612         for (;;)
 613                 ;
 614 }
 615
 616 /*
 617  * Display a single word SRC onto the VSP control panel.
 618  */
 619 void mf_display_src(u32 word)
 620 {
 621         u8 ce[12];
 622
 623         memset(ce, 0, sizeof(ce));
 624         ce[3] = 0x4a;
 625         ce[7] = 0x01;
 626         ce[8] = word >> 24;
 627         ce[9] = word >> 16;
 628         ce[10] = word >> 8;
 629         ce[11] = word;
 630         signal_ce_msg(ce, NULL);
 631 }
 632
 633 /*
 634  * Display a single word SRC of the form "PROGXXXX" on the VSP control panel.
 635  */
 636 void mf_display_progress(u16 value)
 637 {
 638         u8 ce[12];
 639         u8 src[72];
 640
 641         memcpy(ce, "\x00\x00\x04\x4A\x00\x00\x00\x48\x00\x00\x00\x00", 12);
 642         memcpy(src, "\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00"
 643                 "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
 644                 "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
 645                 "\x00\x00\x00\x00PROGxxxx                        ",
 646                 72);
 647         src[6] = value >> 8;
 648         src[7] = value & 255;
 649         src[44] = "0123456789ABCDEF"[(value >> 12) & 15];
 650         src[45] = "0123456789ABCDEF"[(value >> 8) & 15];
 651         src[46] = "0123456789ABCDEF"[(value >> 4) & 15];
 652         src[47] = "0123456789ABCDEF"[value & 15];
 653         dma_and_signal_ce_msg(ce, NULL, src, sizeof(src), 9 * 64 * 1024);
 654 }
 655
 656 /*
 657  * Clear the VSP control panel.  Used to "erase" an SRC that was
 658  * previously displayed.
 659  */
 660 void mf_clear_src(void)
 661 {
 662         signal_ce_msg_simple(0x4b, NULL);
 663 }
 664
 665 /*
 666  * Initialization code here.
 667  */
 668 void mf_init(void)
 669 {
 670         int i;
 671
 672         /* initialize */
 673         spin_lock_init(&pending_event_spinlock);
 674         for (i = 0;
 675              i < sizeof(pending_event_prealloc) / sizeof(*pending_event_prealloc);
 676              ++i)
 677                 free_pending_event(&pending_event_prealloc[i]);
 678         HvLpEvent_registerHandler(HvLpEvent_Type_MachineFac, &hv_handler);
 679
 680         /* virtual continue ack */
 681         signal_ce_msg_simple(0x57, NULL);
 682
 683         /* initialization complete */
 684         printk(KERN_NOTICE "mf.c: iSeries Linux LPAR Machine Facilities "
 685                         "initialized\n");
 686 }
 687
 688 struct rtc_time_data {
 689         struct completion com;
 690         struct ce_msg_data ce_msg;
 691         int rc;
 692 };
 693
 694 static void get_rtc_time_complete(void *token, struct ce_msg_data *ce_msg)
 695 {
 696         struct rtc_time_data *rtc = token;
 697
 698         memcpy(&rtc->ce_msg, ce_msg, sizeof(rtc->ce_msg));
 699         rtc->rc = 0;
 700         complete(&rtc->com);
 701 }
 702
 703 static int rtc_set_tm(int rc, u8 *ce_msg, struct rtc_time *tm)
 704 {
 705         tm->tm_wday = 0;
 706         tm->tm_yday = 0;
 707         tm->tm_isdst = 0;
 708         if (rc) {
 709                 tm->tm_sec = 0;
 710                 tm->tm_min = 0;
 711                 tm->tm_hour = 0;
 712                 tm->tm_mday = 15;
 713                 tm->tm_mon = 5;
 714                 tm->tm_year = 52;
 715                 return rc;
 716         }
 717
 718         if ((ce_msg[2] == 0xa9) ||
 719             (ce_msg[2] == 0xaf)) {
 720                 /* TOD clock is not set */
 721                 tm->tm_sec = 1;
 722                 tm->tm_min = 1;
 723                 tm->tm_hour = 1;
 724                 tm->tm_mday = 10;
 725                 tm->tm_mon = 8;
 726                 tm->tm_year = 71;
 727                 mf_set_rtc(tm);
 728         }
 729         {
 730                 u8 year = ce_msg[5];
 731                 u8 sec = ce_msg[6];
 732                 u8 min = ce_msg[7];
 733                 u8 hour = ce_msg[8];
 734                 u8 day = ce_msg[10];
 735                 u8 mon = ce_msg[11];
 736
 737                 BCD_TO_BIN(sec);
 738                 BCD_TO_BIN(min);
 739                 BCD_TO_BIN(hour);
 740                 BCD_TO_BIN(day);
 741                 BCD_TO_BIN(mon);
 742                 BCD_TO_BIN(year);
 743
 744                 if (year <= 69)
 745                         year += 100;
 746
 747                 tm->tm_sec = sec;
 748                 tm->tm_min = min;
 749                 tm->tm_hour = hour;
 750                 tm->tm_mday = day;
 751                 tm->tm_mon = mon;
 752                 tm->tm_year = year;
 753         }
 754
 755         return 0;
 756 }
 757
 758 int mf_get_rtc(struct rtc_time *tm)
 759 {
 760         struct ce_msg_comp_data ce_complete;
 761         struct rtc_time_data rtc_data;
 762         int rc;
 763
 764         memset(&ce_complete, 0, sizeof(ce_complete));
 765         memset(&rtc_data, 0, sizeof(rtc_data));
 766         init_completion(&rtc_data.com);
 767         ce_complete.handler = &get_rtc_time_complete;
 768         ce_complete.token = &rtc_data;
 769         rc = signal_ce_msg_simple(0x40, &ce_complete);
 770         if (rc)
 771                 return rc;
 772         wait_for_completion(&rtc_data.com);
 773         return rtc_set_tm(rtc_data.rc, rtc_data.ce_msg.ce_msg, tm);
 774 }
 775
 776 struct boot_rtc_time_data {
 777         int busy;
 778         struct ce_msg_data ce_msg;
 779         int rc;
 780 };
 781
 782 static void get_boot_rtc_time_complete(void *token, struct ce_msg_data *ce_msg)
 783 {
 784         struct boot_rtc_time_data *rtc = token;
 785
 786         memcpy(&rtc->ce_msg, ce_msg, sizeof(rtc->ce_msg));
 787         rtc->rc = 0;
 788         rtc->busy = 0;
 789 }
 790
 791 int mf_get_boot_rtc(struct rtc_time *tm)
 792 {
 793         struct ce_msg_comp_data ce_complete;
 794         struct boot_rtc_time_data rtc_data;
 795         int rc;
 796
 797         memset(&ce_complete, 0, sizeof(ce_complete));
 798         memset(&rtc_data, 0, sizeof(rtc_data));
 799         rtc_data.busy = 1;
 800         ce_complete.handler = &get_boot_rtc_time_complete;
 801         ce_complete.token = &rtc_data;
 802         rc = signal_ce_msg_simple(0x40, &ce_complete);
 803         if (rc)
 804                 return rc;
 805         /* We need to poll here as we are not yet taking interrupts */
 806         while (rtc_data.busy) {
 807                 if (hvlpevent_is_pending())
 808                         process_hvlpevents(NULL);
 809         }
 810         return rtc_set_tm(rtc_data.rc, rtc_data.ce_msg.ce_msg, tm);
 811 }
 812
 813 int mf_set_rtc(struct rtc_time *tm)
 814 {
 815         char ce_time[12];
 816         u8 day, mon, hour, min, sec, y1, y2;
 817         unsigned year;
 818
 819         year = 1900 + tm->tm_year;
 820         y1 = year / 100;
 821         y2 = year % 100;
 822
 823         sec = tm->tm_sec;
 824         min = tm->tm_min;
 825         hour = tm->tm_hour;
 826         day = tm->tm_mday;
 827         mon = tm->tm_mon + 1;
 828
 829         BIN_TO_BCD(sec);
 830         BIN_TO_BCD(min);
 831         BIN_TO_BCD(hour);
 832         BIN_TO_BCD(mon);
 833         BIN_TO_BCD(day);
 834         BIN_TO_BCD(y1);
 835         BIN_TO_BCD(y2);
 836
 837         memset(ce_time, 0, sizeof(ce_time));
 838         ce_time[3] = 0x41;
 839         ce_time[4] = y1;
 840         ce_time[5] = y2;
 841         ce_time[6] = sec;
 842         ce_time[7] = min;
 843         ce_time[8] = hour;
 844         ce_time[10] = day;
 845         ce_time[11] = mon;
 846
 847         return signal_ce_msg(ce_time, NULL);
 848 }
 849
 850 #ifdef CONFIG_PROC_FS
 851
 852 static int proc_mf_dump_cmdline(char *page, char **start, off_t off,
 853                 int count, int *eof, void *data)
 854 {
 855         int len;
 856         char *p;
 857         struct vsp_cmd_data vsp_cmd;
 858         int rc;
 859         dma_addr_t dma_addr;
 860
 861         /* The HV appears to return no more than 256 bytes of command line */
 862         if (off >= 256)
 863                 return 0;
 864         if ((off + count) > 256)
 865                 count = 256 - off;
 866
 867         dma_addr = dma_map_single(iSeries_vio_dev, page, off + count,
 868                         DMA_FROM_DEVICE);
 869         if (dma_mapping_error(dma_addr))
 870                 return -ENOMEM;
 871         memset(page, 0, off + count);
 872         memset(&vsp_cmd, 0, sizeof(vsp_cmd));
 873         vsp_cmd.cmd = 33;
 874         vsp_cmd.sub_data.kern.token = dma_addr;
 875         vsp_cmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex;
 876         vsp_cmd.sub_data.kern.side = (u64)data;
 877         vsp_cmd.sub_data.kern.length = off + count;
 878         mb();
 879         rc = signal_vsp_instruction(&vsp_cmd);
 880         dma_unmap_single(iSeries_vio_dev, dma_addr, off + count,
 881                         DMA_FROM_DEVICE);
 882         if (rc)
 883                 return rc;
 884         if (vsp_cmd.result_code != 0)
 885                 return -ENOMEM;
 886         p = page;
 887         len = 0;
 888         while (len < (off + count)) {
 889                 if ((*p == '\0') || (*p == '\n')) {
 890                         if (*p == '\0')
 891                                 *p = '\n';
 892                         p++;
 893                         len++;
 894                         *eof = 1;
 895                         break;
 896                 }
 897                 p++;
 898                 len++;
 899         }
 900
 901         if (len < off) {
 902                 *eof = 1;
 903                 len = 0;
 904         }
 905         return len;
 906 }
 907
 908 #if 0
 909 static int mf_getVmlinuxChunk(char *buffer, int *size, int offset, u64 side)
 910 {
 911         struct vsp_cmd_data vsp_cmd;
 912         int rc;
 913         int len = *size;
 914         dma_addr_t dma_addr;
 915
 916         dma_addr = dma_map_single(iSeries_vio_dev, buffer, len,
 917                         DMA_FROM_DEVICE);
 918         memset(buffer, 0, len);
 919         memset(&vsp_cmd, 0, sizeof(vsp_cmd));
 920         vsp_cmd.cmd = 32;
 921         vsp_cmd.sub_data.kern.token = dma_addr;
 922         vsp_cmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex;
 923         vsp_cmd.sub_data.kern.side = side;
 924         vsp_cmd.sub_data.kern.offset = offset;
 925         vsp_cmd.sub_data.kern.length = len;
 926         mb();
 927         rc = signal_vsp_instruction(&vsp_cmd);
 928         if (rc == 0) {
 929                 if (vsp_cmd.result_code == 0)
 930                         *size = vsp_cmd.sub_data.length_out;
 931                 else
 932                         rc = -ENOMEM;
 933         }
 934
 935         dma_unmap_single(iSeries_vio_dev, dma_addr, len, DMA_FROM_DEVICE);
 936
 937         return rc;
 938 }
 939
 940 static int proc_mf_dump_vmlinux(char *page, char **start, off_t off,
 941                 int count, int *eof, void *data)
 942 {
 943         int sizeToGet = count;
 944
 945         if (!capable(CAP_SYS_ADMIN))
 946                 return -EACCES;
 947
 948         if (mf_getVmlinuxChunk(page, &sizeToGet, off, (u64)data) == 0) {
 949                 if (sizeToGet != 0) {
 950                         *start = page + off;
 951                         return sizeToGet;
 952                 }
 953                 *eof = 1;
 954                 return 0;
 955         }
 956         *eof = 1;
 957         return 0;
 958 }
 959 #endif
 960
 961 static int proc_mf_dump_side(char *page, char **start, off_t off,
 962                 int count, int *eof, void *data)
 963 {
 964         int len;
 965         char mf_current_side = ' ';
 966         struct vsp_cmd_data vsp_cmd;
 967
 968         memset(&vsp_cmd, 0, sizeof(vsp_cmd));
 969         vsp_cmd.cmd = 2;
 970         vsp_cmd.sub_data.ipl_type = 0;
 971         mb();
 972
 973         if (signal_vsp_instruction(&vsp_cmd) == 0) {
 974                 if (vsp_cmd.result_code == 0) {
 975                         switch (vsp_cmd.sub_data.ipl_type) {
 976                         case 0: mf_current_side = 'A';
 977                                 break;
 978                         case 1: mf_current_side = 'B';
 979                                 break;
 980                         case 2: mf_current_side = 'C';
 981                                 break;
 982                         default:        mf_current_side = 'D';
 983                                 break;
 984                         }
 985                 }
 986         }
 987
 988         len = sprintf(page, "%c\n", mf_current_side);
 989
 990         if (len <= (off + count))
 991                 *eof = 1;
 992         *start = page + off;
 993         len -= off;
 994         if (len > count)
 995                 len = count;
 996         if (len < 0)
 997                 len = 0;
 998         return len;
 999 }
1000
1001 static int proc_mf_change_side(struct file *file, const char __user *buffer,
1002                 unsigned long count, void *data)
1003 {
1004         char side;
1005         u64 newSide;
1006         struct vsp_cmd_data vsp_cmd;
1007
1008         if (!capable(CAP_SYS_ADMIN))
1009                 return -EACCES;
1010
1011         if (count == 0)
1012                 return 0;
1013
1014         if (get_user(side, buffer))
1015                 return -EFAULT;
1016
1017         switch (side) {
1018         case 'A':       newSide = 0;
1019                         break;
1020         case 'B':       newSide = 1;
1021                         break;
1022         case 'C':       newSide = 2;
1023                         break;
1024         case 'D':       newSide = 3;
1025                         break;
1026         default:
1027                 printk(KERN_ERR "mf_proc.c: proc_mf_change_side: invalid side\n");
1028                 return -EINVAL;
1029         }
1030
1031         memset(&vsp_cmd, 0, sizeof(vsp_cmd));
1032         vsp_cmd.sub_data.ipl_type = newSide;
1033         vsp_cmd.cmd = 10;
1034
1035         (void)signal_vsp_instruction(&vsp_cmd);
1036
1037         return count;
1038 }
1039
1040 #if 0
1041 static void mf_getSrcHistory(char *buffer, int size)
1042 {
1043         struct IplTypeReturnStuff return_stuff;
1044         struct pending_event *ev = new_pending_event();
1045         int rc = 0;
1046         char *pages[4];
1047
1048         pages[0] = kmalloc(4096, GFP_ATOMIC);
1049         pages[1] = kmalloc(4096, GFP_ATOMIC);
1050         pages[2] = kmalloc(4096, GFP_ATOMIC);
1051         pages[3] = kmalloc(4096, GFP_ATOMIC);
1052         if ((ev == NULL) || (pages[0] == NULL) || (pages[1] == NULL)
1053                          || (pages[2] == NULL) || (pages[3] == NULL))
1054                 return -ENOMEM;
1055
1056         return_stuff.xType = 0;
1057         return_stuff.xRc = 0;
1058         return_stuff.xDone = 0;
1059         ev->event.hp_lp_event.xSubtype = 6;
1060         ev->event.hp_lp_event.x.xSubtypeData =
1061                 subtype_data('M', 'F', 'V', 'I');
1062         ev->event.data.vsp_cmd.xEvent = &return_stuff;
1063         ev->event.data.vsp_cmd.cmd = 4;
1064         ev->event.data.vsp_cmd.lp_index = HvLpConfig_getLpIndex();
1065         ev->event.data.vsp_cmd.result_code = 0xFF;
1066         ev->event.data.vsp_cmd.reserved = 0;
1067         ev->event.data.vsp_cmd.sub_data.page[0] = ISERIES_HV_ADDR(pages[0]);
1068         ev->event.data.vsp_cmd.sub_data.page[1] = ISERIES_HV_ADDR(pages[1]);
1069         ev->event.data.vsp_cmd.sub_data.page[2] = ISERIES_HV_ADDR(pages[2]);
1070         ev->event.data.vsp_cmd.sub_data.page[3] = ISERIES_HV_ADDR(pages[3]);
1071         mb();
1072         if (signal_event(ev) != 0)
1073                 return;
1074
1075         while (return_stuff.xDone != 1)
1076                 udelay(10);
1077         if (return_stuff.xRc == 0)
1078                 memcpy(buffer, pages[0], size);
1079         kfree(pages[0]);
1080         kfree(pages[1]);
1081         kfree(pages[2]);
1082         kfree(pages[3]);
1083 }
1084 #endif
1085
1086 static int proc_mf_dump_src(char *page, char **start, off_t off,
1087                 int count, int *eof, void *data)
1088 {
1089 #if 0
1090         int len;
1091
1092         mf_getSrcHistory(page, count);
1093         len = count;
1094         len -= off;
1095         if (len < count) {
1096                 *eof = 1;
1097                 if (len <= 0)
1098                         return 0;
1099         } else
1100                 len = count;
1101         *start = page + off;
1102         return len;
1103 #else
1104         return 0;
1105 #endif
1106 }
1107
1108 static int proc_mf_change_src(struct file *file, const char __user *buffer,
1109                 unsigned long count, void *data)
1110 {
1111         char stkbuf[10];
1112
1113         if (!capable(CAP_SYS_ADMIN))
1114                 return -EACCES;
1115
1116         if ((count < 4) && (count != 1)) {
1117                 printk(KERN_ERR "mf_proc: invalid src\n");
1118                 return -EINVAL;
1119         }
1120
1121         if (count > (sizeof(stkbuf) - 1))
1122                 count = sizeof(stkbuf) - 1;
1123         if (copy_from_user(stkbuf, buffer, count))
1124                 return -EFAULT;
1125
1126         if ((count == 1) && (*stkbuf == '\0'))
1127                 mf_clear_src();
1128         else
1129                 mf_display_src(*(u32 *)stkbuf);
1130
1131         return count;
1132 }
1133
1134 static int proc_mf_change_cmdline(struct file *file, const char __user *buffer,
1135                 unsigned long count, void *data)
1136 {
1137         struct vsp_cmd_data vsp_cmd;
1138         dma_addr_t dma_addr;
1139         char *page;
1140         int ret = -EACCES;
1141
1142         if (!capable(CAP_SYS_ADMIN))
1143                 goto out;
1144
1145         dma_addr = 0;
1146         page = dma_alloc_coherent(iSeries_vio_dev, count, &dma_addr,
1147                         GFP_ATOMIC);
1148         ret = -ENOMEM;
1149         if (page == NULL)
1150                 goto out;
1151
1152         ret = -EFAULT;
1153         if (copy_from_user(page, buffer, count))
1154                 goto out_free;
1155
1156         memset(&vsp_cmd, 0, sizeof(vsp_cmd));
1157         vsp_cmd.cmd = 31;
1158         vsp_cmd.sub_data.kern.token = dma_addr;
1159         vsp_cmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex;
1160         vsp_cmd.sub_data.kern.side = (u64)data;
1161         vsp_cmd.sub_data.kern.length = count;
1162         mb();
1163         (void)signal_vsp_instruction(&vsp_cmd);
1164         ret = count;
1165
1166 out_free:
1167         dma_free_coherent(iSeries_vio_dev, count, page, dma_addr);
1168 out:
1169         return ret;
1170 }
1171
1172 static ssize_t proc_mf_change_vmlinux(struct file *file,
1173                                       const char __user *buf,
1174                                       size_t count, loff_t *ppos)
1175 {
1176         struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
1177         ssize_t rc;
1178         dma_addr_t dma_addr;
1179         char *page;
1180         struct vsp_cmd_data vsp_cmd;
1181
1182         rc = -EACCES;
1183         if (!capable(CAP_SYS_ADMIN))
1184                 goto out;
1185
1186         dma_addr = 0;
1187         page = dma_alloc_coherent(iSeries_vio_dev, count, &dma_addr,
1188                         GFP_ATOMIC);
1189         rc = -ENOMEM;
1190         if (page == NULL) {
1191                 printk(KERN_ERR "mf.c: couldn't allocate memory to set vmlinux chunk\n");
1192                 goto out;
1193         }
1194         rc = -EFAULT;
1195         if (copy_from_user(page, buf, count))
1196                 goto out_free;
1197
1198         memset(&vsp_cmd, 0, sizeof(vsp_cmd));
1199         vsp_cmd.cmd = 30;
1200         vsp_cmd.sub_data.kern.token = dma_addr;
1201         vsp_cmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex;
1202         vsp_cmd.sub_data.kern.side = (u64)dp->data;
1203         vsp_cmd.sub_data.kern.offset = *ppos;
1204         vsp_cmd.sub_data.kern.length = count;
1205         mb();
1206         rc = signal_vsp_instruction(&vsp_cmd);
1207         if (rc)
1208                 goto out_free;
1209         rc = -ENOMEM;
1210         if (vsp_cmd.result_code != 0)
1211                 goto out_free;
1212
1213         *ppos += count;
1214         rc = count;
1215 out_free:
1216         dma_free_coherent(iSeries_vio_dev, count, page, dma_addr);
1217 out:
1218         return rc;
1219 }
1220
1221 static struct file_operations proc_vmlinux_operations = {
1222         .write          = proc_mf_change_vmlinux,
1223 };
1224
1225 static int __init mf_proc_init(void)
1226 {
1227         struct proc_dir_entry *mf_proc_root;
1228         struct proc_dir_entry *ent;
1229         struct proc_dir_entry *mf;
1230         char name[2];
1231         int i;
1232
1233         mf_proc_root = proc_mkdir("iSeries/mf", NULL);
1234         if (!mf_proc_root)
1235                 return 1;
1236
1237         name[1] = '\0';
1238         for (i = 0; i < 4; i++) {
1239                 name[0] = 'A' + i;
1240                 mf = proc_mkdir(name, mf_proc_root);
1241                 if (!mf)
1242                         return 1;
1243
1244                 ent = create_proc_entry("cmdline", S_IFREG|S_IRUSR|S_IWUSR, mf);
1245                 if (!ent)
1246                         return 1;
1247                 ent->nlink = 1;
1248                 ent->data = (void *)(long)i;
1249                 ent->read_proc = proc_mf_dump_cmdline;
1250                 ent->write_proc = proc_mf_change_cmdline;
1251
1252                 if (i == 3)     /* no vmlinux entry for 'D' */
1253                         continue;
1254
1255                 ent = create_proc_entry("vmlinux", S_IFREG|S_IWUSR, mf);
1256                 if (!ent)
1257                         return 1;
1258                 ent->nlink = 1;
1259                 ent->data = (void *)(long)i;
1260                 ent->proc_fops = &proc_vmlinux_operations;
1261         }
1262
1263         ent = create_proc_entry("side", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root);
1264         if (!ent)
1265                 return 1;
1266         ent->nlink = 1;
1267         ent->data = (void *)0;
1268         ent->read_proc = proc_mf_dump_side;
1269         ent->write_proc = proc_mf_change_side;
1270
1271         ent = create_proc_entry("src", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root);
1272         if (!ent)
1273                 return 1;
1274         ent->nlink = 1;
1275         ent->data = (void *)0;
1276         ent->read_proc = proc_mf_dump_src;
1277         ent->write_proc = proc_mf_change_src;
1278
1279         return 0;
1280 }
1281
1282 __initcall(mf_proc_init);
1283
1284 #endif /* CONFIG_PROC_FS */
1285
1286 /*
1287  * Get the RTC from the virtual service processor
1288  * This requires flowing LpEvents to the primary partition
1289  */
1290 void iSeries_get_rtc_time(struct rtc_time *rtc_tm)
1291 {
1292         if (piranha_simulator)
1293                 return;
1294
1295         mf_get_rtc(rtc_tm);
1296         rtc_tm->tm_mon--;
1297 }
1298
1299 /*
1300  * Set the RTC in the virtual service processor
1301  * This requires flowing LpEvents to the primary partition
1302  */
1303 int iSeries_set_rtc_time(struct rtc_time *tm)
1304 {
1305         mf_set_rtc(tm);
1306         return 0;
1307 }
1308
1309 void iSeries_get_boot_time(struct rtc_time *tm)
1310 {
1311         if (piranha_simulator)
1312                 return;
1313
1314         mf_get_boot_rtc(tm);
1315         tm->tm_mon  -= 1;
1316 }