git.oblomov.eu Git - linux-2.6/blob - drivers/ps3/ps3-lpm.c

   1 /*
   2  * PS3 Logical Performance Monitor.
   3  *
   4  *  Copyright (C) 2007 Sony Computer Entertainment Inc.
   5  *  Copyright 2007 Sony Corp.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; version 2 of the License.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <linux/kernel.h>
  22 #include <linux/module.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/uaccess.h>
  25 #include <asm/ps3.h>
  26 #include <asm/lv1call.h>
  27 #include <asm/cell-pmu.h>
  28
  29
  30 /* BOOKMARK tag macros */
  31 #define PS3_PM_BOOKMARK_START                    0x8000000000000000ULL
  32 #define PS3_PM_BOOKMARK_STOP                     0x4000000000000000ULL
  33 #define PS3_PM_BOOKMARK_TAG_KERNEL               0x1000000000000000ULL
  34 #define PS3_PM_BOOKMARK_TAG_USER                 0x3000000000000000ULL
  35 #define PS3_PM_BOOKMARK_TAG_MASK_HI              0xF000000000000000ULL
  36 #define PS3_PM_BOOKMARK_TAG_MASK_LO              0x0F00000000000000ULL
  37
  38 /* CBE PM CONTROL register macros */
  39 #define PS3_PM_CONTROL_PPU_TH0_BOOKMARK          0x00001000
  40 #define PS3_PM_CONTROL_PPU_TH1_BOOKMARK          0x00000800
  41 #define PS3_PM_CONTROL_PPU_COUNT_MODE_MASK       0x000C0000
  42 #define PS3_PM_CONTROL_PPU_COUNT_MODE_PROBLEM    0x00080000
  43 #define PS3_WRITE_PM_MASK                        0xFFFFFFFFFFFFFFFFULL
  44
  45 /* CBE PM START STOP register macros */
  46 #define PS3_PM_START_STOP_PPU_TH0_BOOKMARK_START 0x02000000
  47 #define PS3_PM_START_STOP_PPU_TH1_BOOKMARK_START 0x01000000
  48 #define PS3_PM_START_STOP_PPU_TH0_BOOKMARK_STOP  0x00020000
  49 #define PS3_PM_START_STOP_PPU_TH1_BOOKMARK_STOP  0x00010000
  50 #define PS3_PM_START_STOP_START_MASK             0xFF000000
  51 #define PS3_PM_START_STOP_STOP_MASK              0x00FF0000
  52
  53 /* CBE PM COUNTER register macres */
  54 #define PS3_PM_COUNTER_MASK_HI                   0xFFFFFFFF00000000ULL
  55 #define PS3_PM_COUNTER_MASK_LO                   0x00000000FFFFFFFFULL
  56
  57 /* BASE SIGNAL GROUP NUMBER macros */
  58 #define PM_ISLAND2_BASE_SIGNAL_GROUP_NUMBER  0
  59 #define PM_ISLAND2_SIGNAL_GROUP_NUMBER1      6
  60 #define PM_ISLAND2_SIGNAL_GROUP_NUMBER2      7
  61 #define PM_ISLAND3_BASE_SIGNAL_GROUP_NUMBER  7
  62 #define PM_ISLAND4_BASE_SIGNAL_GROUP_NUMBER  15
  63 #define PM_SPU_TRIGGER_SIGNAL_GROUP_NUMBER   17
  64 #define PM_SPU_EVENT_SIGNAL_GROUP_NUMBER     18
  65 #define PM_ISLAND5_BASE_SIGNAL_GROUP_NUMBER  18
  66 #define PM_ISLAND6_BASE_SIGNAL_GROUP_NUMBER  24
  67 #define PM_ISLAND7_BASE_SIGNAL_GROUP_NUMBER  49
  68 #define PM_ISLAND8_BASE_SIGNAL_GROUP_NUMBER  52
  69 #define PM_SIG_GROUP_SPU                     41
  70 #define PM_SIG_GROUP_SPU_TRIGGER             42
  71 #define PM_SIG_GROUP_SPU_EVENT               43
  72 #define PM_SIG_GROUP_MFC_MAX                 60
  73
  74 /**
  75  * struct ps3_lpm_shadow_regs - Performance monitor shadow registers.
  76  *
  77  * @pm_control: Shadow of the processor's pm_control register.
  78  * @pm_start_stop: Shadow of the processor's pm_start_stop register.
  79  * @group_control: Shadow of the processor's group_control register.
  80  * @debug_bus_control: Shadow of the processor's debug_bus_control register.
  81  *
  82  * The logical performance monitor provides a write-only interface to
  83  * these processor registers.  These shadow variables cache the processor
  84  * register values for reading.
  85  *
  86  * The initial value of the shadow registers at lpm creation is
  87  * PS3_LPM_SHADOW_REG_INIT.
  88  */
  89
  90 struct ps3_lpm_shadow_regs {
  91         u64 pm_control;
  92         u64 pm_start_stop;
  93         u64 group_control;
  94         u64 debug_bus_control;
  95 };
  96
  97 #define PS3_LPM_SHADOW_REG_INIT 0xFFFFFFFF00000000ULL
  98
  99 /**
 100  * struct ps3_lpm_priv - Private lpm device data.
 101  *
 102  * @open: An atomic variable indicating the lpm driver has been opened.
 103  * @rights: The lpm rigths granted by the system policy module.  A logical
 104  *  OR of enum ps3_lpm_rights.
 105  * @node_id: The node id of a BE prosessor whose performance monitor this
 106  *  lpar has the right to use.
 107  * @pu_id: The lv1 id of the logical PU.
 108  * @lpm_id: The lv1 id of this lpm instance.
 109  * @outlet_id: The outlet created by lv1 for this lpm instance.
 110  * @tb_count: The number of bytes of data held in the lv1 trace buffer.
 111  * @tb_cache: Kernel buffer to receive the data from the lv1 trace buffer.
 112  *  Must be 128 byte aligned.
 113  * @tb_cache_size: Size of the kernel @tb_cache buffer.  Must be 128 byte
 114  *  aligned.
 115  * @tb_cache_internal: An unaligned buffer allocated by this driver to be
 116  *  used for the trace buffer cache when ps3_lpm_open() is called with a
 117  *  NULL tb_cache argument.  Otherwise unused.
 118  * @shadow: Processor register shadow of type struct ps3_lpm_shadow_regs.
 119  * @sbd: The struct ps3_system_bus_device attached to this driver.
 120  *
 121  * The trace buffer is a buffer allocated and used internally to the lv1
 122  * hypervisor to collect trace data.  The trace buffer cache is a guest
 123  * buffer that accepts the trace data from the trace buffer.
 124  */
 125
 126 struct ps3_lpm_priv {
 127         atomic_t open;
 128         u64 rights;
 129         u64 node_id;
 130         u64 pu_id;
 131         u64 lpm_id;
 132         u64 outlet_id;
 133         u64 tb_count;
 134         void *tb_cache;
 135         u64 tb_cache_size;
 136         void *tb_cache_internal;
 137         struct ps3_lpm_shadow_regs shadow;
 138         struct ps3_system_bus_device *sbd;
 139 };
 140
 141 enum {
 142         PS3_LPM_DEFAULT_TB_CACHE_SIZE = 0x4000,
 143 };
 144
 145 /**
 146  * lpm_priv - Static instance of the lpm data.
 147  *
 148  * Since the exported routines don't support the notion of a device
 149  * instance we need to hold the instance in this static variable
 150  * and then only allow at most one instance at a time to be created.
 151  */
 152
 153 static struct ps3_lpm_priv *lpm_priv;
 154
 155 static struct device *sbd_core(void)
 156 {
 157         BUG_ON(!lpm_priv || !lpm_priv->sbd);
 158         return &lpm_priv->sbd->core;
 159 }
 160
 161 /**
 162  * use_start_stop_bookmark - Enable the PPU bookmark trace.
 163  *
 164  * And it enables PPU bookmark triggers ONLY if the other triggers are not set.
 165  * The start/stop bookmarks are inserted at ps3_enable_pm() and ps3_disable_pm()
 166  * to start/stop LPM.
 167  *
 168  * Used to get good quality of the performance counter.
 169  */
 170
 171 enum {use_start_stop_bookmark = 1,};
 172
 173 void ps3_set_bookmark(u64 bookmark)
 174 {
 175         /*
 176          * As per the PPE book IV, to avoid bookmark loss there must
 177          * not be a traced branch within 10 cycles of setting the
 178          * SPRN_BKMK register.  The actual text is unclear if 'within'
 179          * includes cycles before the call.
 180          */
 181
 182         asm volatile("nop;nop;nop;nop;nop;nop;nop;nop;nop;");
 183         mtspr(SPRN_BKMK, bookmark);
 184         asm volatile("nop;nop;nop;nop;nop;nop;nop;nop;nop;");
 185 }
 186 EXPORT_SYMBOL_GPL(ps3_set_bookmark);
 187
 188 void ps3_set_pm_bookmark(u64 tag, u64 incident, u64 th_id)
 189 {
 190         u64 bookmark;
 191
 192         bookmark = (get_tb() & 0x00000000FFFFFFFFULL) |
 193                 PS3_PM_BOOKMARK_TAG_KERNEL;
 194         bookmark = ((tag << 56) & PS3_PM_BOOKMARK_TAG_MASK_LO) |
 195                 (incident << 48) | (th_id << 32) | bookmark;
 196         ps3_set_bookmark(bookmark);
 197 }
 198 EXPORT_SYMBOL_GPL(ps3_set_pm_bookmark);
 199
 200 /**
 201  * ps3_read_phys_ctr - Read physical counter registers.
 202  *
 203  * Each physical counter can act as one 32 bit counter or as two 16 bit
 204  * counters.
 205  */
 206
 207 u32 ps3_read_phys_ctr(u32 cpu, u32 phys_ctr)
 208 {
 209         int result;
 210         u64 counter0415;
 211         u64 counter2637;
 212
 213         if (phys_ctr >= NR_PHYS_CTRS) {
 214                 dev_dbg(sbd_core(), "%s:%u: phys_ctr too big: %u\n", __func__,
 215                         __LINE__, phys_ctr);
 216                 return 0;
 217         }
 218
 219         result = lv1_set_lpm_counter(lpm_priv->lpm_id, 0, 0, 0, 0, &counter0415,
 220                                      &counter2637);
 221         if (result) {
 222                 dev_err(sbd_core(), "%s:%u: lv1_set_lpm_counter failed: "
 223                         "phys_ctr %u, %s\n", __func__, __LINE__, phys_ctr,
 224                         ps3_result(result));
 225                 return 0;
 226         }
 227
 228         switch (phys_ctr) {
 229         case 0:
 230                 return counter0415 >> 32;
 231         case 1:
 232                 return counter0415 & PS3_PM_COUNTER_MASK_LO;
 233         case 2:
 234                 return counter2637 >> 32;
 235         case 3:
 236                 return counter2637 & PS3_PM_COUNTER_MASK_LO;
 237         default:
 238                 BUG();
 239         }
 240         return 0;
 241 }
 242 EXPORT_SYMBOL_GPL(ps3_read_phys_ctr);
 243
 244 /**
 245  * ps3_write_phys_ctr - Write physical counter registers.
 246  *
 247  * Each physical counter can act as one 32 bit counter or as two 16 bit
 248  * counters.
 249  */
 250
 251 void ps3_write_phys_ctr(u32 cpu, u32 phys_ctr, u32 val)
 252 {
 253         u64 counter0415;
 254         u64 counter0415_mask;
 255         u64 counter2637;
 256         u64 counter2637_mask;
 257         int result;
 258
 259         if (phys_ctr >= NR_PHYS_CTRS) {
 260                 dev_dbg(sbd_core(), "%s:%u: phys_ctr too big: %u\n", __func__,
 261                         __LINE__, phys_ctr);
 262                 return;
 263         }
 264
 265         switch (phys_ctr) {
 266         case 0:
 267                 counter0415 = (u64)val << 32;
 268                 counter0415_mask = PS3_PM_COUNTER_MASK_HI;
 269                 counter2637 = 0x0;
 270                 counter2637_mask = 0x0;
 271                 break;
 272         case 1:
 273                 counter0415 = (u64)val;
 274                 counter0415_mask = PS3_PM_COUNTER_MASK_LO;
 275                 counter2637 = 0x0;
 276                 counter2637_mask = 0x0;
 277                 break;
 278         case 2:
 279                 counter0415 = 0x0;
 280                 counter0415_mask = 0x0;
 281                 counter2637 = (u64)val << 32;
 282                 counter2637_mask = PS3_PM_COUNTER_MASK_HI;
 283                 break;
 284         case 3:
 285                 counter0415 = 0x0;
 286                 counter0415_mask = 0x0;
 287                 counter2637 = (u64)val;
 288                 counter2637_mask = PS3_PM_COUNTER_MASK_LO;
 289                 break;
 290         default:
 291                 BUG();
 292         }
 293
 294         result = lv1_set_lpm_counter(lpm_priv->lpm_id,
 295                                      counter0415, counter0415_mask,
 296                                      counter2637, counter2637_mask,
 297                                      &counter0415, &counter2637);
 298         if (result)
 299                 dev_err(sbd_core(), "%s:%u: lv1_set_lpm_counter failed: "
 300                         "phys_ctr %u, val %u, %s\n", __func__, __LINE__,
 301                         phys_ctr, val, ps3_result(result));
 302 }
 303 EXPORT_SYMBOL_GPL(ps3_write_phys_ctr);
 304
 305 /**
 306  * ps3_read_ctr - Read counter.
 307  *
 308  * Read 16 or 32 bits depending on the current size of the counter.
 309  * Counters 4, 5, 6 & 7 are always 16 bit.
 310  */
 311
 312 u32 ps3_read_ctr(u32 cpu, u32 ctr)
 313 {
 314         u32 val;
 315         u32 phys_ctr = ctr & (NR_PHYS_CTRS - 1);
 316
 317         val = ps3_read_phys_ctr(cpu, phys_ctr);
 318
 319         if (ps3_get_ctr_size(cpu, phys_ctr) == 16)
 320                 val = (ctr < NR_PHYS_CTRS) ? (val >> 16) : (val & 0xffff);
 321
 322         return val;
 323 }
 324 EXPORT_SYMBOL_GPL(ps3_read_ctr);
 325
 326 /**
 327  * ps3_write_ctr - Write counter.
 328  *
 329  * Write 16 or 32 bits depending on the current size of the counter.
 330  * Counters 4, 5, 6 & 7 are always 16 bit.
 331  */
 332
 333 void ps3_write_ctr(u32 cpu, u32 ctr, u32 val)
 334 {
 335         u32 phys_ctr;
 336         u32 phys_val;
 337
 338         phys_ctr = ctr & (NR_PHYS_CTRS - 1);
 339
 340         if (ps3_get_ctr_size(cpu, phys_ctr) == 16) {
 341                 phys_val = ps3_read_phys_ctr(cpu, phys_ctr);
 342
 343                 if (ctr < NR_PHYS_CTRS)
 344                         val = (val << 16) | (phys_val & 0xffff);
 345                 else
 346                         val = (val & 0xffff) | (phys_val & 0xffff0000);
 347         }
 348
 349         ps3_write_phys_ctr(cpu, phys_ctr, val);
 350 }
 351 EXPORT_SYMBOL_GPL(ps3_write_ctr);
 352
 353 /**
 354  * ps3_read_pm07_control - Read counter control registers.
 355  *
 356  * Each logical counter has a corresponding control register.
 357  */
 358
 359 u32 ps3_read_pm07_control(u32 cpu, u32 ctr)
 360 {
 361         return 0;
 362 }
 363 EXPORT_SYMBOL_GPL(ps3_read_pm07_control);
 364
 365 /**
 366  * ps3_write_pm07_control - Write counter control registers.
 367  *
 368  * Each logical counter has a corresponding control register.
 369  */
 370
 371 void ps3_write_pm07_control(u32 cpu, u32 ctr, u32 val)
 372 {
 373         int result;
 374         static const u64 mask = 0xFFFFFFFFFFFFFFFFULL;
 375         u64 old_value;
 376
 377         if (ctr >= NR_CTRS) {
 378                 dev_dbg(sbd_core(), "%s:%u: ctr too big: %u\n", __func__,
 379                         __LINE__, ctr);
 380                 return;
 381         }
 382
 383         result = lv1_set_lpm_counter_control(lpm_priv->lpm_id, ctr, val, mask,
 384                                              &old_value);
 385         if (result)
 386                 dev_err(sbd_core(), "%s:%u: lv1_set_lpm_counter_control "
 387                         "failed: ctr %u, %s\n", __func__, __LINE__, ctr,
 388                         ps3_result(result));
 389 }
 390 EXPORT_SYMBOL_GPL(ps3_write_pm07_control);
 391
 392 /**
 393  * ps3_read_pm - Read Other LPM control registers.
 394  */
 395
 396 u32 ps3_read_pm(u32 cpu, enum pm_reg_name reg)
 397 {
 398         int result = 0;
 399         u64 val = 0;
 400
 401         switch (reg) {
 402         case pm_control:
 403                 return lpm_priv->shadow.pm_control;
 404         case trace_address:
 405                 return CBE_PM_TRACE_BUF_EMPTY;
 406         case pm_start_stop:
 407                 return lpm_priv->shadow.pm_start_stop;
 408         case pm_interval:
 409                 result = lv1_set_lpm_interval(lpm_priv->lpm_id, 0, 0, &val);
 410                 if (result) {
 411                         val = 0;
 412                         dev_dbg(sbd_core(), "%s:%u: lv1 set_inteval failed: "
 413                                 "reg %u, %s\n", __func__, __LINE__, reg,
 414                                 ps3_result(result));
 415                 }
 416                 return (u32)val;
 417         case group_control:
 418                 return lpm_priv->shadow.group_control;
 419         case debug_bus_control:
 420                 return lpm_priv->shadow.debug_bus_control;
 421         case pm_status:
 422                 result = lv1_get_lpm_interrupt_status(lpm_priv->lpm_id,
 423                                                       &val);
 424                 if (result) {
 425                         val = 0;
 426                         dev_dbg(sbd_core(), "%s:%u: lv1 get_lpm_status failed: "
 427                                 "reg %u, %s\n", __func__, __LINE__, reg,
 428                                 ps3_result(result));
 429                 }
 430                 return (u32)val;
 431         case ext_tr_timer:
 432                 return 0;
 433         default:
 434                 dev_dbg(sbd_core(), "%s:%u: unknown reg: %d\n", __func__,
 435                         __LINE__, reg);
 436                 BUG();
 437                 break;
 438         }
 439
 440         return 0;
 441 }
 442 EXPORT_SYMBOL_GPL(ps3_read_pm);
 443
 444 /**
 445  * ps3_write_pm - Write Other LPM control registers.
 446  */
 447
 448 void ps3_write_pm(u32 cpu, enum pm_reg_name reg, u32 val)
 449 {
 450         int result = 0;
 451         u64 dummy;
 452
 453         switch (reg) {
 454         case group_control:
 455                 if (val != lpm_priv->shadow.group_control)
 456                         result = lv1_set_lpm_group_control(lpm_priv->lpm_id,
 457                                                            val,
 458                                                            PS3_WRITE_PM_MASK,
 459                                                            &dummy);
 460                 lpm_priv->shadow.group_control = val;
 461                 break;
 462         case debug_bus_control:
 463                 if (val != lpm_priv->shadow.debug_bus_control)
 464                         result = lv1_set_lpm_debug_bus_control(lpm_priv->lpm_id,
 465                                                               val,
 466                                                               PS3_WRITE_PM_MASK,
 467                                                               &dummy);
 468                 lpm_priv->shadow.debug_bus_control = val;
 469                 break;
 470         case pm_control:
 471                 if (use_start_stop_bookmark)
 472                         val |= (PS3_PM_CONTROL_PPU_TH0_BOOKMARK |
 473                                 PS3_PM_CONTROL_PPU_TH1_BOOKMARK);
 474                 if (val != lpm_priv->shadow.pm_control)
 475                         result = lv1_set_lpm_general_control(lpm_priv->lpm_id,
 476                                                              val,
 477                                                              PS3_WRITE_PM_MASK,
 478                                                              0, 0, &dummy,
 479                                                              &dummy);
 480                 lpm_priv->shadow.pm_control = val;
 481                 break;
 482         case pm_interval:
 483                 result = lv1_set_lpm_interval(lpm_priv->lpm_id, val,
 484                                               PS3_WRITE_PM_MASK, &dummy);
 485                 break;
 486         case pm_start_stop:
 487                 if (val != lpm_priv->shadow.pm_start_stop)
 488                         result = lv1_set_lpm_trigger_control(lpm_priv->lpm_id,
 489                                                              val,
 490                                                              PS3_WRITE_PM_MASK,
 491                                                              &dummy);
 492                 lpm_priv->shadow.pm_start_stop = val;
 493                 break;
 494         case trace_address:
 495         case ext_tr_timer:
 496         case pm_status:
 497                 break;
 498         default:
 499                 dev_dbg(sbd_core(), "%s:%u: unknown reg: %d\n", __func__,
 500                         __LINE__, reg);
 501                 BUG();
 502                 break;
 503         }
 504
 505         if (result)
 506                 dev_err(sbd_core(), "%s:%u: lv1 set_control failed: "
 507                         "reg %u, %s\n", __func__, __LINE__, reg,
 508                         ps3_result(result));
 509 }
 510 EXPORT_SYMBOL_GPL(ps3_write_pm);
 511
 512 /**
 513  * ps3_get_ctr_size - Get the size of a physical counter.
 514  *
 515  * Returns either 16 or 32.
 516  */
 517
 518 u32 ps3_get_ctr_size(u32 cpu, u32 phys_ctr)
 519 {
 520         u32 pm_ctrl;
 521
 522         if (phys_ctr >= NR_PHYS_CTRS) {
 523                 dev_dbg(sbd_core(), "%s:%u: phys_ctr too big: %u\n", __func__,
 524                         __LINE__, phys_ctr);
 525                 return 0;
 526         }
 527
 528         pm_ctrl = ps3_read_pm(cpu, pm_control);
 529         return (pm_ctrl & CBE_PM_16BIT_CTR(phys_ctr)) ? 16 : 32;
 530 }
 531 EXPORT_SYMBOL_GPL(ps3_get_ctr_size);
 532
 533 /**
 534  * ps3_set_ctr_size - Set the size of a physical counter to 16 or 32 bits.
 535  */
 536
 537 void ps3_set_ctr_size(u32 cpu, u32 phys_ctr, u32 ctr_size)
 538 {
 539         u32 pm_ctrl;
 540
 541         if (phys_ctr >= NR_PHYS_CTRS) {
 542                 dev_dbg(sbd_core(), "%s:%u: phys_ctr too big: %u\n", __func__,
 543                         __LINE__, phys_ctr);
 544                 return;
 545         }
 546
 547         pm_ctrl = ps3_read_pm(cpu, pm_control);
 548
 549         switch (ctr_size) {
 550         case 16:
 551                 pm_ctrl |= CBE_PM_16BIT_CTR(phys_ctr);
 552                 ps3_write_pm(cpu, pm_control, pm_ctrl);
 553                 break;
 554
 555         case 32:
 556                 pm_ctrl &= ~CBE_PM_16BIT_CTR(phys_ctr);
 557                 ps3_write_pm(cpu, pm_control, pm_ctrl);
 558                 break;
 559         default:
 560                 BUG();
 561         }
 562 }
 563 EXPORT_SYMBOL_GPL(ps3_set_ctr_size);
 564
 565 static u64 pm_translate_signal_group_number_on_island2(u64 subgroup)
 566 {
 567
 568         if (subgroup == 2)
 569                 subgroup = 3;
 570
 571         if (subgroup <= 6)
 572                 return PM_ISLAND2_BASE_SIGNAL_GROUP_NUMBER + subgroup;
 573         else if (subgroup == 7)
 574                 return PM_ISLAND2_SIGNAL_GROUP_NUMBER1;
 575         else
 576                 return PM_ISLAND2_SIGNAL_GROUP_NUMBER2;
 577 }
 578
 579 static u64 pm_translate_signal_group_number_on_island3(u64 subgroup)
 580 {
 581
 582         switch (subgroup) {
 583         case 2:
 584         case 3:
 585         case 4:
 586                 subgroup += 2;
 587                 break;
 588         case 5:
 589                 subgroup = 8;
 590                 break;
 591         default:
 592                 break;
 593         }
 594         return PM_ISLAND3_BASE_SIGNAL_GROUP_NUMBER + subgroup;
 595 }
 596
 597 static u64 pm_translate_signal_group_number_on_island4(u64 subgroup)
 598 {
 599         return PM_ISLAND4_BASE_SIGNAL_GROUP_NUMBER + subgroup;
 600 }
 601
 602 static u64 pm_translate_signal_group_number_on_island5(u64 subgroup)
 603 {
 604
 605         switch (subgroup) {
 606         case 3:
 607                 subgroup = 4;
 608                 break;
 609         case 4:
 610                 subgroup = 6;
 611                 break;
 612         default:
 613                 break;
 614         }
 615         return PM_ISLAND5_BASE_SIGNAL_GROUP_NUMBER + subgroup;
 616 }
 617
 618 static u64 pm_translate_signal_group_number_on_island6(u64 subgroup,
 619                                                        u64 subsubgroup)
 620 {
 621         switch (subgroup) {
 622         case 3:
 623         case 4:
 624         case 5:
 625                 subgroup += 1;
 626                 break;
 627         default:
 628                 break;
 629         }
 630
 631         switch (subsubgroup) {
 632         case 4:
 633         case 5:
 634         case 6:
 635                 subsubgroup += 2;
 636                 break;
 637         case 7:
 638         case 8:
 639         case 9:
 640         case 10:
 641                 subsubgroup += 4;
 642                 break;
 643         case 11:
 644         case 12:
 645         case 13:
 646                 subsubgroup += 5;
 647                 break;
 648         default:
 649                 break;
 650         }
 651
 652         if (subgroup <= 5)
 653                 return (PM_ISLAND6_BASE_SIGNAL_GROUP_NUMBER + subgroup);
 654         else
 655                 return (PM_ISLAND6_BASE_SIGNAL_GROUP_NUMBER + subgroup
 656                         + subsubgroup - 1);
 657 }
 658
 659 static u64 pm_translate_signal_group_number_on_island7(u64 subgroup)
 660 {
 661         return PM_ISLAND7_BASE_SIGNAL_GROUP_NUMBER + subgroup;
 662 }
 663
 664 static u64 pm_translate_signal_group_number_on_island8(u64 subgroup)
 665 {
 666         return PM_ISLAND8_BASE_SIGNAL_GROUP_NUMBER + subgroup;
 667 }
 668
 669 static u64 pm_signal_group_to_ps3_lv1_signal_group(u64 group)
 670 {
 671         u64 island;
 672         u64 subgroup;
 673         u64 subsubgroup;
 674
 675         subgroup = 0;
 676         subsubgroup = 0;
 677         island = 0;
 678         if (group < 1000) {
 679                 if (group < 100) {
 680                         if (20 <= group && group < 30) {
 681                                 island = 2;
 682                                 subgroup = group - 20;
 683                         } else if (30 <= group && group < 40) {
 684                                 island = 3;
 685                                 subgroup = group - 30;
 686                         } else if (40 <= group && group < 50) {
 687                                 island = 4;
 688                                 subgroup = group - 40;
 689                         } else if (50 <= group && group < 60) {
 690                                 island = 5;
 691                                 subgroup = group - 50;
 692                         } else if (60 <= group && group < 70) {
 693                                 island = 6;
 694                                 subgroup = group - 60;
 695                         } else if (70 <= group && group < 80) {
 696                                 island = 7;
 697                                 subgroup = group - 70;
 698                         } else if (80 <= group && group < 90) {
 699                                 island = 8;
 700                                 subgroup = group - 80;
 701                         }
 702                 } else if (200 <= group && group < 300) {
 703                         island = 2;
 704                         subgroup = group - 200;
 705                 } else if (600 <= group && group < 700) {
 706                         island = 6;
 707                         subgroup = 5;
 708                         subsubgroup = group - 650;
 709                 }
 710         } else if (6000 <= group && group < 7000) {
 711                 island = 6;
 712                 subgroup = 5;
 713                 subsubgroup = group - 6500;
 714         }
 715
 716         switch (island) {
 717         case 2:
 718                 return pm_translate_signal_group_number_on_island2(subgroup);
 719         case 3:
 720                 return pm_translate_signal_group_number_on_island3(subgroup);
 721         case 4:
 722                 return pm_translate_signal_group_number_on_island4(subgroup);
 723         case 5:
 724                 return pm_translate_signal_group_number_on_island5(subgroup);
 725         case 6:
 726                 return pm_translate_signal_group_number_on_island6(subgroup,
 727                                                                    subsubgroup);
 728         case 7:
 729                 return pm_translate_signal_group_number_on_island7(subgroup);
 730         case 8:
 731                 return pm_translate_signal_group_number_on_island8(subgroup);
 732         default:
 733                 dev_dbg(sbd_core(), "%s:%u: island not found: %lu\n", __func__,
 734                         __LINE__, group);
 735                 BUG();
 736                 break;
 737         }
 738         return 0;
 739 }
 740
 741 static u64 pm_bus_word_to_ps3_lv1_bus_word(u8 word)
 742 {
 743
 744         switch (word) {
 745         case 1:
 746                 return 0xF000;
 747         case 2:
 748                 return 0x0F00;
 749         case 4:
 750                 return 0x00F0;
 751         case 8:
 752         default:
 753                 return 0x000F;
 754         }
 755 }
 756
 757 static int __ps3_set_signal(u64 lv1_signal_group, u64 bus_select,
 758                             u64 signal_select, u64 attr1, u64 attr2, u64 attr3)
 759 {
 760         int ret;
 761
 762         ret = lv1_set_lpm_signal(lpm_priv->lpm_id, lv1_signal_group, bus_select,
 763                                  signal_select, attr1, attr2, attr3);
 764         if (ret)
 765                 dev_err(sbd_core(),
 766                         "%s:%u: error:%d 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx\n",
 767                         __func__, __LINE__, ret, lv1_signal_group, bus_select,
 768                         signal_select, attr1, attr2, attr3);
 769
 770         return ret;
 771 }
 772
 773 int ps3_set_signal(u64 signal_group, u8 signal_bit, u16 sub_unit,
 774                    u8 bus_word)
 775 {
 776         int ret;
 777         u64 lv1_signal_group;
 778         u64 bus_select;
 779         u64 signal_select;
 780         u64 attr1, attr2, attr3;
 781
 782         if (signal_group == 0)
 783                 return __ps3_set_signal(0, 0, 0, 0, 0, 0);
 784
 785         lv1_signal_group =
 786                 pm_signal_group_to_ps3_lv1_signal_group(signal_group);
 787         bus_select = pm_bus_word_to_ps3_lv1_bus_word(bus_word);
 788
 789         switch (signal_group) {
 790         case PM_SIG_GROUP_SPU_TRIGGER:
 791                 signal_select = 1;
 792                 signal_select = signal_select << (63 - signal_bit);
 793                 break;
 794         case PM_SIG_GROUP_SPU_EVENT:
 795                 signal_select = 1;
 796                 signal_select = (signal_select << (63 - signal_bit)) | 0x3;
 797                 break;
 798         default:
 799                 signal_select = 0;
 800                 break;
 801         }
 802
 803         /*
 804          * 0: physical object.
 805          * 1: logical object.
 806          * This parameter is only used for the PPE and SPE signals.
 807          */
 808         attr1 = 1;
 809
 810         /*
 811          * This parameter is used to specify the target physical/logical
 812          * PPE/SPE object.
 813          */
 814         if (PM_SIG_GROUP_SPU <= signal_group &&
 815                 signal_group < PM_SIG_GROUP_MFC_MAX)
 816                 attr2 = sub_unit;
 817         else
 818                 attr2 = lpm_priv->pu_id;
 819
 820         /*
 821          * This parameter is only used for setting the SPE signal.
 822          */
 823         attr3 = 0;
 824
 825         ret = __ps3_set_signal(lv1_signal_group, bus_select, signal_select,
 826                                attr1, attr2, attr3);
 827         if (ret)
 828                 dev_err(sbd_core(), "%s:%u: __ps3_set_signal failed: %d\n",
 829                         __func__, __LINE__, ret);
 830
 831         return ret;
 832 }
 833 EXPORT_SYMBOL_GPL(ps3_set_signal);
 834
 835 u32 ps3_get_hw_thread_id(int cpu)
 836 {
 837         return get_hard_smp_processor_id(cpu);
 838 }
 839 EXPORT_SYMBOL_GPL(ps3_get_hw_thread_id);
 840
 841 /**
 842  * ps3_enable_pm - Enable the entire performance monitoring unit.
 843  *
 844  * When we enable the LPM, all pending writes to counters get committed.
 845  */
 846
 847 void ps3_enable_pm(u32 cpu)
 848 {
 849         int result;
 850         u64 tmp;
 851         int insert_bookmark = 0;
 852
 853         lpm_priv->tb_count = 0;
 854
 855         if (use_start_stop_bookmark) {
 856                 if (!(lpm_priv->shadow.pm_start_stop &
 857                         (PS3_PM_START_STOP_START_MASK
 858                         | PS3_PM_START_STOP_STOP_MASK))) {
 859                         result = lv1_set_lpm_trigger_control(lpm_priv->lpm_id,
 860                                 (PS3_PM_START_STOP_PPU_TH0_BOOKMARK_START |
 861                                 PS3_PM_START_STOP_PPU_TH1_BOOKMARK_START |
 862                                 PS3_PM_START_STOP_PPU_TH0_BOOKMARK_STOP |
 863                                 PS3_PM_START_STOP_PPU_TH1_BOOKMARK_STOP),
 864                                 0xFFFFFFFFFFFFFFFFULL, &tmp);
 865
 866                         if (result)
 867                                 dev_err(sbd_core(), "%s:%u: "
 868                                         "lv1_set_lpm_trigger_control failed: "
 869                                         "%s\n", __func__, __LINE__,
 870                                         ps3_result(result));
 871
 872                         insert_bookmark = !result;
 873                 }
 874         }
 875
 876         result = lv1_start_lpm(lpm_priv->lpm_id);
 877
 878         if (result)
 879                 dev_err(sbd_core(), "%s:%u: lv1_start_lpm failed: %s\n",
 880                         __func__, __LINE__, ps3_result(result));
 881
 882         if (use_start_stop_bookmark && !result && insert_bookmark)
 883                 ps3_set_bookmark(get_tb() | PS3_PM_BOOKMARK_START);
 884 }
 885 EXPORT_SYMBOL_GPL(ps3_enable_pm);
 886
 887 /**
 888  * ps3_disable_pm - Disable the entire performance monitoring unit.
 889  */
 890
 891 void ps3_disable_pm(u32 cpu)
 892 {
 893         int result;
 894         u64 tmp;
 895
 896         ps3_set_bookmark(get_tb() | PS3_PM_BOOKMARK_STOP);
 897
 898         result = lv1_stop_lpm(lpm_priv->lpm_id, &tmp);
 899
 900         if (result) {
 901                 if(result != LV1_WRONG_STATE)
 902                         dev_err(sbd_core(), "%s:%u: lv1_stop_lpm failed: %s\n",
 903                                 __func__, __LINE__, ps3_result(result));
 904                 return;
 905         }
 906
 907         lpm_priv->tb_count = tmp;
 908
 909         dev_dbg(sbd_core(), "%s:%u: tb_count %lu (%lxh)\n", __func__, __LINE__,
 910                 lpm_priv->tb_count, lpm_priv->tb_count);
 911 }
 912 EXPORT_SYMBOL_GPL(ps3_disable_pm);
 913
 914 /**
 915  * ps3_lpm_copy_tb - Copy data from the trace buffer to a kernel buffer.
 916  * @offset: Offset in bytes from the start of the trace buffer.
 917  * @buf: Copy destination.
 918  * @count: Maximum count of bytes to copy.
 919  * @bytes_copied: Pointer to a variable that will recieve the number of
 920  *  bytes copied to @buf.
 921  *
 922  * On error @buf will contain any successfully copied trace buffer data
 923  * and bytes_copied will be set to the number of bytes successfully copied.
 924  */
 925
 926 int ps3_lpm_copy_tb(unsigned long offset, void *buf, unsigned long count,
 927                     unsigned long *bytes_copied)
 928 {
 929         int result;
 930
 931         *bytes_copied = 0;
 932
 933         if (!lpm_priv->tb_cache)
 934                 return -EPERM;
 935
 936         if (offset >= lpm_priv->tb_count)
 937                 return 0;
 938
 939         count = min(count, lpm_priv->tb_count - offset);
 940
 941         while (*bytes_copied < count) {
 942                 const unsigned long request = count - *bytes_copied;
 943                 u64 tmp;
 944
 945                 result = lv1_copy_lpm_trace_buffer(lpm_priv->lpm_id, offset,
 946                                                    request, &tmp);
 947                 if (result) {
 948                         dev_dbg(sbd_core(), "%s:%u: 0x%lx bytes at 0x%lx\n",
 949                                 __func__, __LINE__, request, offset);
 950
 951                         dev_err(sbd_core(), "%s:%u: lv1_copy_lpm_trace_buffer "
 952                                 "failed: %s\n", __func__, __LINE__,
 953                                 ps3_result(result));
 954                         return result == LV1_WRONG_STATE ? -EBUSY : -EINVAL;
 955                 }
 956
 957                 memcpy(buf, lpm_priv->tb_cache, tmp);
 958                 buf += tmp;
 959                 *bytes_copied += tmp;
 960                 offset += tmp;
 961         }
 962         dev_dbg(sbd_core(), "%s:%u: copied %lxh bytes\n", __func__, __LINE__,
 963                 *bytes_copied);
 964
 965         return 0;
 966 }
 967 EXPORT_SYMBOL_GPL(ps3_lpm_copy_tb);
 968
 969 /**
 970  * ps3_lpm_copy_tb_to_user - Copy data from the trace buffer to a user buffer.
 971  * @offset: Offset in bytes from the start of the trace buffer.
 972  * @buf: A __user copy destination.
 973  * @count: Maximum count of bytes to copy.
 974  * @bytes_copied: Pointer to a variable that will recieve the number of
 975  *  bytes copied to @buf.
 976  *
 977  * On error @buf will contain any successfully copied trace buffer data
 978  * and bytes_copied will be set to the number of bytes successfully copied.
 979  */
 980
 981 int ps3_lpm_copy_tb_to_user(unsigned long offset, void __user *buf,
 982                             unsigned long count, unsigned long *bytes_copied)
 983 {
 984         int result;
 985
 986         *bytes_copied = 0;
 987
 988         if (!lpm_priv->tb_cache)
 989                 return -EPERM;
 990
 991         if (offset >= lpm_priv->tb_count)
 992                 return 0;
 993
 994         count = min(count, lpm_priv->tb_count - offset);
 995
 996         while (*bytes_copied < count) {
 997                 const unsigned long request = count - *bytes_copied;
 998                 u64 tmp;
 999
1000                 result = lv1_copy_lpm_trace_buffer(lpm_priv->lpm_id, offset,
1001                                                    request, &tmp);
1002                 if (result) {
1003                         dev_dbg(sbd_core(), "%s:%u: 0x%lx bytes at 0x%lx\n",
1004                                 __func__, __LINE__, request, offset);
1005                         dev_err(sbd_core(), "%s:%u: lv1_copy_lpm_trace_buffer "
1006                                 "failed: %s\n", __func__, __LINE__,
1007                                 ps3_result(result));
1008                         return result == LV1_WRONG_STATE ? -EBUSY : -EINVAL;
1009                 }
1010
1011                 result = copy_to_user(buf, lpm_priv->tb_cache, tmp);
1012
1013                 if (result) {
1014                         dev_dbg(sbd_core(), "%s:%u: 0x%lx bytes at 0x%p\n",
1015                                 __func__, __LINE__, tmp, buf);
1016                         dev_err(sbd_core(), "%s:%u: copy_to_user failed: %d\n",
1017                                 __func__, __LINE__, result);
1018                         return -EFAULT;
1019                 }
1020
1021                 buf += tmp;
1022                 *bytes_copied += tmp;
1023                 offset += tmp;
1024         }
1025         dev_dbg(sbd_core(), "%s:%u: copied %lxh bytes\n", __func__, __LINE__,
1026                 *bytes_copied);
1027
1028         return 0;
1029 }
1030 EXPORT_SYMBOL_GPL(ps3_lpm_copy_tb_to_user);
1031
1032 /**
1033  * ps3_get_and_clear_pm_interrupts -
1034  *
1035  * Clearing interrupts for the entire performance monitoring unit.
1036  * Reading pm_status clears the interrupt bits.
1037  */
1038
1039 u32 ps3_get_and_clear_pm_interrupts(u32 cpu)
1040 {
1041         return ps3_read_pm(cpu, pm_status);
1042 }
1043 EXPORT_SYMBOL_GPL(ps3_get_and_clear_pm_interrupts);
1044
1045 /**
1046  * ps3_enable_pm_interrupts -
1047  *
1048  * Enabling interrupts for the entire performance monitoring unit.
1049  * Enables the interrupt bits in the pm_status register.
1050  */
1051
1052 void ps3_enable_pm_interrupts(u32 cpu, u32 thread, u32 mask)
1053 {
1054         if (mask)
1055                 ps3_write_pm(cpu, pm_status, mask);
1056 }
1057 EXPORT_SYMBOL_GPL(ps3_enable_pm_interrupts);
1058
1059 /**
1060  * ps3_enable_pm_interrupts -
1061  *
1062  * Disabling interrupts for the entire performance monitoring unit.
1063  */
1064
1065 void ps3_disable_pm_interrupts(u32 cpu)
1066 {
1067         ps3_get_and_clear_pm_interrupts(cpu);
1068         ps3_write_pm(cpu, pm_status, 0);
1069 }
1070 EXPORT_SYMBOL_GPL(ps3_disable_pm_interrupts);
1071
1072 /**
1073  * ps3_lpm_open - Open the logical performance monitor device.
1074  * @tb_type: Specifies the type of trace buffer lv1 sould use for this lpm
1075  *  instance, specified by one of enum ps3_lpm_tb_type.
1076  * @tb_cache: Optional user supplied buffer to use as the trace buffer cache.
1077  *  If NULL, the driver will allocate and manage an internal buffer.
1078  *  Unused when when @tb_type is PS3_LPM_TB_TYPE_NONE.
1079  * @tb_cache_size: The size in bytes of the user supplied @tb_cache buffer.
1080  *  Unused when @tb_cache is NULL or @tb_type is PS3_LPM_TB_TYPE_NONE.
1081  */
1082
1083 int ps3_lpm_open(enum ps3_lpm_tb_type tb_type, void *tb_cache,
1084         u64 tb_cache_size)
1085 {
1086         int result;
1087         u64 tb_size;
1088
1089         BUG_ON(!lpm_priv);
1090         BUG_ON(tb_type != PS3_LPM_TB_TYPE_NONE
1091                 && tb_type != PS3_LPM_TB_TYPE_INTERNAL);
1092
1093         if (tb_type == PS3_LPM_TB_TYPE_NONE && tb_cache)
1094                 dev_dbg(sbd_core(), "%s:%u: bad in vals\n", __func__, __LINE__);
1095
1096         if (!atomic_add_unless(&lpm_priv->open, 1, 1)) {
1097                 dev_dbg(sbd_core(), "%s:%u: busy\n", __func__, __LINE__);
1098                 return -EBUSY;
1099         }
1100
1101         /* Note tb_cache needs 128 byte alignment. */
1102
1103         if (tb_type == PS3_LPM_TB_TYPE_NONE) {
1104                 lpm_priv->tb_cache_size = 0;
1105                 lpm_priv->tb_cache_internal = NULL;
1106                 lpm_priv->tb_cache = NULL;
1107         } else if (tb_cache) {
1108                 if (tb_cache != (void *)_ALIGN_UP((unsigned long)tb_cache, 128)
1109                         || tb_cache_size != _ALIGN_UP(tb_cache_size, 128)) {
1110                         dev_err(sbd_core(), "%s:%u: unaligned tb_cache\n",
1111                                 __func__, __LINE__);
1112                         result = -EINVAL;
1113                         goto fail_align;
1114                 }
1115                 lpm_priv->tb_cache_size = tb_cache_size;
1116                 lpm_priv->tb_cache_internal = NULL;
1117                 lpm_priv->tb_cache = tb_cache;
1118         } else {
1119                 lpm_priv->tb_cache_size = PS3_LPM_DEFAULT_TB_CACHE_SIZE;
1120                 lpm_priv->tb_cache_internal = kzalloc(
1121                         lpm_priv->tb_cache_size + 127, GFP_KERNEL);
1122                 if (!lpm_priv->tb_cache_internal) {
1123                         dev_err(sbd_core(), "%s:%u: alloc internal tb_cache "
1124                                 "failed\n", __func__, __LINE__);
1125                         result = -ENOMEM;
1126                         goto fail_malloc;
1127                 }
1128                 lpm_priv->tb_cache = (void *)_ALIGN_UP(
1129                         (unsigned long)lpm_priv->tb_cache_internal, 128);
1130         }
1131
1132         result = lv1_construct_lpm(lpm_priv->node_id, tb_type, 0, 0,
1133                                 ps3_mm_phys_to_lpar(__pa(lpm_priv->tb_cache)),
1134                                 lpm_priv->tb_cache_size, &lpm_priv->lpm_id,
1135                                 &lpm_priv->outlet_id, &tb_size);
1136
1137         if (result) {
1138                 dev_err(sbd_core(), "%s:%u: lv1_construct_lpm failed: %s\n",
1139                         __func__, __LINE__, ps3_result(result));
1140                 result = -EINVAL;
1141                 goto fail_construct;
1142         }
1143
1144         lpm_priv->shadow.pm_control = PS3_LPM_SHADOW_REG_INIT;
1145         lpm_priv->shadow.pm_start_stop = PS3_LPM_SHADOW_REG_INIT;
1146         lpm_priv->shadow.group_control = PS3_LPM_SHADOW_REG_INIT;
1147         lpm_priv->shadow.debug_bus_control = PS3_LPM_SHADOW_REG_INIT;
1148
1149         dev_dbg(sbd_core(), "%s:%u: lpm_id 0x%lx, outlet_id 0x%lx, "
1150                 "tb_size 0x%lx\n", __func__, __LINE__, lpm_priv->lpm_id,
1151                 lpm_priv->outlet_id, tb_size);
1152
1153         return 0;
1154
1155 fail_construct:
1156         kfree(lpm_priv->tb_cache_internal);
1157         lpm_priv->tb_cache_internal = NULL;
1158 fail_malloc:
1159 fail_align:
1160         atomic_dec(&lpm_priv->open);
1161         return result;
1162 }
1163 EXPORT_SYMBOL_GPL(ps3_lpm_open);
1164
1165 /**
1166  * ps3_lpm_close - Close the lpm device.
1167  *
1168  */
1169
1170 int ps3_lpm_close(void)
1171 {
1172         dev_dbg(sbd_core(), "%s:%u\n", __func__, __LINE__);
1173
1174         lv1_destruct_lpm(lpm_priv->lpm_id);
1175         lpm_priv->lpm_id = 0;
1176
1177         kfree(lpm_priv->tb_cache_internal);
1178         lpm_priv->tb_cache_internal = NULL;
1179
1180         atomic_dec(&lpm_priv->open);
1181         return 0;
1182 }
1183 EXPORT_SYMBOL_GPL(ps3_lpm_close);
1184
1185 static int __devinit ps3_lpm_probe(struct ps3_system_bus_device *dev)
1186 {
1187         dev_dbg(&dev->core, " -> %s:%u\n", __func__, __LINE__);
1188
1189         if (lpm_priv) {
1190                 dev_info(&dev->core, "%s:%u: called twice\n",
1191                         __func__, __LINE__);
1192                 return -EBUSY;
1193         }
1194
1195         lpm_priv = kzalloc(sizeof(*lpm_priv), GFP_KERNEL);
1196
1197         if (!lpm_priv)
1198                 return -ENOMEM;
1199
1200         lpm_priv->sbd = dev;
1201         lpm_priv->node_id = dev->lpm.node_id;
1202         lpm_priv->pu_id = dev->lpm.pu_id;
1203         lpm_priv->rights = dev->lpm.rights;
1204
1205         dev_info(&dev->core, " <- %s:%u:\n", __func__, __LINE__);
1206
1207         return 0;
1208 }
1209
1210 static int ps3_lpm_remove(struct ps3_system_bus_device *dev)
1211 {
1212         dev_dbg(&dev->core, " -> %s:%u:\n", __func__, __LINE__);
1213
1214         ps3_lpm_close();
1215
1216         kfree(lpm_priv);
1217         lpm_priv = NULL;
1218
1219         dev_info(&dev->core, " <- %s:%u:\n", __func__, __LINE__);
1220         return 0;
1221 }
1222
1223 static struct ps3_system_bus_driver ps3_lpm_driver = {
1224         .match_id = PS3_MATCH_ID_LPM,
1225         .core.name      = "ps3-lpm",
1226         .core.owner     = THIS_MODULE,
1227         .probe          = ps3_lpm_probe,
1228         .remove         = ps3_lpm_remove,
1229         .shutdown       = ps3_lpm_remove,
1230 };
1231
1232 static int __init ps3_lpm_init(void)
1233 {
1234         pr_debug("%s:%d:\n", __func__, __LINE__);
1235         return ps3_system_bus_driver_register(&ps3_lpm_driver);
1236 }
1237
1238 static void __exit ps3_lpm_exit(void)
1239 {
1240         pr_debug("%s:%d:\n", __func__, __LINE__);
1241         ps3_system_bus_driver_unregister(&ps3_lpm_driver);
1242 }
1243
1244 module_init(ps3_lpm_init);
1245 module_exit(ps3_lpm_exit);
1246
1247 MODULE_LICENSE("GPL v2");
1248 MODULE_DESCRIPTION("PS3 Logical Performance Monitor Driver");
1249 MODULE_AUTHOR("Sony Corporation");
1250 MODULE_ALIAS(PS3_MODULE_ALIAS_LPM);