arch/powerpc/platforms/ps3/mm.c

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This source file includes following definitions.
make_page_sizes
_debug_dump_map
ps3_mm_phys_to_lpar
ps3_mm_vas_create
ps3_mm_vas_destroy
ps3_mm_get_repository_highmem
ps3_mm_set_repository_highmem
ps3_mm_region_create
ps3_mm_region_destroy
dma_sb_lpar_to_bus
_dma_dump_region
_dma_dump_chunk
dma_find_chunk
dma_find_chunk_lpar
dma_sb_free_chunk
dma_ioc0_free_chunk
dma_sb_map_pages
dma_ioc0_map_pages
dma_sb_region_create
dma_ioc0_region_create
dma_sb_region_free
dma_ioc0_region_free
dma_sb_map_area
dma_ioc0_map_area
dma_sb_unmap_area
dma_ioc0_unmap_area
dma_sb_region_create_linear
dma_sb_region_free_linear
dma_sb_map_area_linear
dma_sb_unmap_area_linear
ps3_dma_region_init
ps3_dma_region_create
ps3_dma_region_free
ps3_dma_map
ps3_dma_unmap
ps3_mm_init
ps3_mm_shutdown
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  PS3 address space management.
   4  *
   5  *  Copyright (C) 2006 Sony Computer Entertainment Inc.
   6  *  Copyright 2006 Sony Corp.
   7  */
   8 
   9 #include <linux/kernel.h>
  10 #include <linux/export.h>
  11 #include <linux/memblock.h>
  12 #include <linux/slab.h>
  13 
  14 #include <asm/cell-regs.h>
  15 #include <asm/firmware.h>
  16 #include <asm/prom.h>
  17 #include <asm/udbg.h>
  18 #include <asm/lv1call.h>
  19 #include <asm/setup.h>
  20 
  21 #include "platform.h"
  22 
  23 #if defined(DEBUG)
  24 #define DBG udbg_printf
  25 #else
  26 #define DBG pr_devel
  27 #endif
  28 
  29 enum {
  30 #if defined(CONFIG_PS3_DYNAMIC_DMA)
  31         USE_DYNAMIC_DMA = 1,
  32 #else
  33         USE_DYNAMIC_DMA = 0,
  34 #endif
  35 };
  36 
  37 enum {
  38         PAGE_SHIFT_4K = 12U,
  39         PAGE_SHIFT_64K = 16U,
  40         PAGE_SHIFT_16M = 24U,
  41 };
  42 
  43 static unsigned long make_page_sizes(unsigned long a, unsigned long b)
  44 {
  45         return (a << 56) | (b << 48);
  46 }
  47 
  48 enum {
  49         ALLOCATE_MEMORY_TRY_ALT_UNIT = 0X04,
  50         ALLOCATE_MEMORY_ADDR_ZERO = 0X08,
  51 };
  52 
  53 /* valid htab sizes are {18,19,20} = 256K, 512K, 1M */
  54 
  55 enum {
  56         HTAB_SIZE_MAX = 20U, /* HV limit of 1MB */
  57         HTAB_SIZE_MIN = 18U, /* CPU limit of 256KB */
  58 };
  59 
  60 /*============================================================================*/
  61 /* virtual address space routines                                             */
  62 /*============================================================================*/
  63 
  64 /**
  65  * struct mem_region - memory region structure
  66  * @base: base address
  67  * @size: size in bytes
  68  * @offset: difference between base and rm.size
  69  * @destroy: flag if region should be destroyed upon shutdown
  70  */
  71 
  72 struct mem_region {
  73         u64 base;
  74         u64 size;
  75         unsigned long offset;
  76         int destroy;
  77 };
  78 
  79 /**
  80  * struct map - address space state variables holder
  81  * @total: total memory available as reported by HV
  82  * @vas_id - HV virtual address space id
  83  * @htab_size: htab size in bytes
  84  *
  85  * The HV virtual address space (vas) allows for hotplug memory regions.
  86  * Memory regions can be created and destroyed in the vas at runtime.
  87  * @rm: real mode (bootmem) region
  88  * @r1: highmem region(s)
  89  *
  90  * ps3 addresses
  91  * virt_addr: a cpu 'translated' effective address
  92  * phys_addr: an address in what Linux thinks is the physical address space
  93  * lpar_addr: an address in the HV virtual address space
  94  * bus_addr: an io controller 'translated' address on a device bus
  95  */
  96 
  97 struct map {
  98         u64 total;
  99         u64 vas_id;
 100         u64 htab_size;
 101         struct mem_region rm;
 102         struct mem_region r1;
 103 };
 104 
 105 #define debug_dump_map(x) _debug_dump_map(x, __func__, __LINE__)
 106 static void __maybe_unused _debug_dump_map(const struct map *m,
 107         const char *func, int line)
 108 {
 109         DBG("%s:%d: map.total     = %llxh\n", func, line, m->total);
 110         DBG("%s:%d: map.rm.size   = %llxh\n", func, line, m->rm.size);
 111         DBG("%s:%d: map.vas_id    = %llu\n", func, line, m->vas_id);
 112         DBG("%s:%d: map.htab_size = %llxh\n", func, line, m->htab_size);
 113         DBG("%s:%d: map.r1.base   = %llxh\n", func, line, m->r1.base);
 114         DBG("%s:%d: map.r1.offset = %lxh\n", func, line, m->r1.offset);
 115         DBG("%s:%d: map.r1.size   = %llxh\n", func, line, m->r1.size);
 116 }
 117 
 118 static struct map map;
 119 
 120 /**
 121  * ps3_mm_phys_to_lpar - translate a linux physical address to lpar address
 122  * @phys_addr: linux physical address
 123  */
 124 
 125 unsigned long ps3_mm_phys_to_lpar(unsigned long phys_addr)
 126 {
 127         BUG_ON(is_kernel_addr(phys_addr));
 128         return (phys_addr < map.rm.size || phys_addr >= map.total)
 129                 ? phys_addr : phys_addr + map.r1.offset;
 130 }
 131 
 132 EXPORT_SYMBOL(ps3_mm_phys_to_lpar);
 133 
 134 /**
 135  * ps3_mm_vas_create - create the virtual address space
 136  */
 137 
 138 void __init ps3_mm_vas_create(unsigned long* htab_size)
 139 {
 140         int result;
 141         u64 start_address;
 142         u64 size;
 143         u64 access_right;
 144         u64 max_page_size;
 145         u64 flags;
 146 
 147         result = lv1_query_logical_partition_address_region_info(0,
 148                 &start_address, &size, &access_right, &max_page_size,
 149                 &flags);
 150 
 151         if (result) {
 152                 DBG("%s:%d: lv1_query_logical_partition_address_region_info "
 153                         "failed: %s\n", __func__, __LINE__,
 154                         ps3_result(result));
 155                 goto fail;
 156         }
 157 
 158         if (max_page_size < PAGE_SHIFT_16M) {
 159                 DBG("%s:%d: bad max_page_size %llxh\n", __func__, __LINE__,
 160                         max_page_size);
 161                 goto fail;
 162         }
 163 
 164         BUILD_BUG_ON(CONFIG_PS3_HTAB_SIZE > HTAB_SIZE_MAX);
 165         BUILD_BUG_ON(CONFIG_PS3_HTAB_SIZE < HTAB_SIZE_MIN);
 166 
 167         result = lv1_construct_virtual_address_space(CONFIG_PS3_HTAB_SIZE,
 168                         2, make_page_sizes(PAGE_SHIFT_16M, PAGE_SHIFT_64K),
 169                         &map.vas_id, &map.htab_size);
 170 
 171         if (result) {
 172                 DBG("%s:%d: lv1_construct_virtual_address_space failed: %s\n",
 173                         __func__, __LINE__, ps3_result(result));
 174                 goto fail;
 175         }
 176 
 177         result = lv1_select_virtual_address_space(map.vas_id);
 178 
 179         if (result) {
 180                 DBG("%s:%d: lv1_select_virtual_address_space failed: %s\n",
 181                         __func__, __LINE__, ps3_result(result));
 182                 goto fail;
 183         }
 184 
 185         *htab_size = map.htab_size;
 186 
 187         debug_dump_map(&map);
 188 
 189         return;
 190 
 191 fail:
 192         panic("ps3_mm_vas_create failed");
 193 }
 194 
 195 /**
 196  * ps3_mm_vas_destroy -
 197  */
 198 
 199 void ps3_mm_vas_destroy(void)
 200 {
 201         int result;
 202 
 203         DBG("%s:%d: map.vas_id    = %llu\n", __func__, __LINE__, map.vas_id);
 204 
 205         if (map.vas_id) {
 206                 result = lv1_select_virtual_address_space(0);
 207                 BUG_ON(result);
 208                 result = lv1_destruct_virtual_address_space(map.vas_id);
 209                 BUG_ON(result);
 210                 map.vas_id = 0;
 211         }
 212 }
 213 
 214 static int ps3_mm_get_repository_highmem(struct mem_region *r)
 215 {
 216         int result;
 217 
 218         /* Assume a single highmem region. */
 219 
 220         result = ps3_repository_read_highmem_info(0, &r->base, &r->size);
 221 
 222         if (result)
 223                 goto zero_region;
 224 
 225         if (!r->base || !r->size) {
 226                 result = -1;
 227                 goto zero_region;
 228         }
 229 
 230         r->offset = r->base - map.rm.size;
 231 
 232         DBG("%s:%d: Found high region in repository: %llxh %llxh\n",
 233             __func__, __LINE__, r->base, r->size);
 234 
 235         return 0;
 236 
 237 zero_region:
 238         DBG("%s:%d: No high region in repository.\n", __func__, __LINE__);
 239 
 240         r->size = r->base = r->offset = 0;
 241         return result;
 242 }
 243 
 244 static int ps3_mm_set_repository_highmem(const struct mem_region *r)
 245 {
 246         /* Assume a single highmem region. */
 247 
 248         return r ? ps3_repository_write_highmem_info(0, r->base, r->size) :
 249                 ps3_repository_write_highmem_info(0, 0, 0);
 250 }
 251 
 252 /**
 253  * ps3_mm_region_create - create a memory region in the vas
 254  * @r: pointer to a struct mem_region to accept initialized values
 255  * @size: requested region size
 256  *
 257  * This implementation creates the region with the vas large page size.
 258  * @size is rounded down to a multiple of the vas large page size.
 259  */
 260 
 261 static int ps3_mm_region_create(struct mem_region *r, unsigned long size)
 262 {
 263         int result;
 264         u64 muid;
 265 
 266         r->size = _ALIGN_DOWN(size, 1 << PAGE_SHIFT_16M);
 267 
 268         DBG("%s:%d requested  %lxh\n", __func__, __LINE__, size);
 269         DBG("%s:%d actual     %llxh\n", __func__, __LINE__, r->size);
 270         DBG("%s:%d difference %llxh (%lluMB)\n", __func__, __LINE__,
 271                 size - r->size, (size - r->size) / 1024 / 1024);
 272 
 273         if (r->size == 0) {
 274                 DBG("%s:%d: size == 0\n", __func__, __LINE__);
 275                 result = -1;
 276                 goto zero_region;
 277         }
 278 
 279         result = lv1_allocate_memory(r->size, PAGE_SHIFT_16M, 0,
 280                 ALLOCATE_MEMORY_TRY_ALT_UNIT, &r->base, &muid);
 281 
 282         if (result || r->base < map.rm.size) {
 283                 DBG("%s:%d: lv1_allocate_memory failed: %s\n",
 284                         __func__, __LINE__, ps3_result(result));
 285                 goto zero_region;
 286         }
 287 
 288         r->destroy = 1;
 289         r->offset = r->base - map.rm.size;
 290         return result;
 291 
 292 zero_region:
 293         r->size = r->base = r->offset = 0;
 294         return result;
 295 }
 296 
 297 /**
 298  * ps3_mm_region_destroy - destroy a memory region
 299  * @r: pointer to struct mem_region
 300  */
 301 
 302 static void ps3_mm_region_destroy(struct mem_region *r)
 303 {
 304         int result;
 305 
 306         if (!r->destroy) {
 307                 pr_info("%s:%d: Not destroying high region: %llxh %llxh\n",
 308                         __func__, __LINE__, r->base, r->size);
 309                 return;
 310         }
 311 
 312         DBG("%s:%d: r->base = %llxh\n", __func__, __LINE__, r->base);
 313 
 314         if (r->base) {
 315                 result = lv1_release_memory(r->base);
 316                 BUG_ON(result);
 317                 r->size = r->base = r->offset = 0;
 318                 map.total = map.rm.size;
 319         }
 320         ps3_mm_set_repository_highmem(NULL);
 321 }
 322 
 323 /*============================================================================*/
 324 /* dma routines                                                               */
 325 /*============================================================================*/
 326 
 327 /**
 328  * dma_sb_lpar_to_bus - Translate an lpar address to ioc mapped bus address.
 329  * @r: pointer to dma region structure
 330  * @lpar_addr: HV lpar address
 331  */
 332 
 333 static unsigned long dma_sb_lpar_to_bus(struct ps3_dma_region *r,
 334         unsigned long lpar_addr)
 335 {
 336         if (lpar_addr >= map.rm.size)
 337                 lpar_addr -= map.r1.offset;
 338         BUG_ON(lpar_addr < r->offset);
 339         BUG_ON(lpar_addr >= r->offset + r->len);
 340         return r->bus_addr + lpar_addr - r->offset;
 341 }
 342 
 343 #define dma_dump_region(_a) _dma_dump_region(_a, __func__, __LINE__)
 344 static void  __maybe_unused _dma_dump_region(const struct ps3_dma_region *r,
 345         const char *func, int line)
 346 {
 347         DBG("%s:%d: dev        %llu:%llu\n", func, line, r->dev->bus_id,
 348                 r->dev->dev_id);
 349         DBG("%s:%d: page_size  %u\n", func, line, r->page_size);
 350         DBG("%s:%d: bus_addr   %lxh\n", func, line, r->bus_addr);
 351         DBG("%s:%d: len        %lxh\n", func, line, r->len);
 352         DBG("%s:%d: offset     %lxh\n", func, line, r->offset);
 353 }
 354 
 355   /**
 356  * dma_chunk - A chunk of dma pages mapped by the io controller.
 357  * @region - The dma region that owns this chunk.
 358  * @lpar_addr: Starting lpar address of the area to map.
 359  * @bus_addr: Starting ioc bus address of the area to map.
 360  * @len: Length in bytes of the area to map.
 361  * @link: A struct list_head used with struct ps3_dma_region.chunk_list, the
 362  * list of all chuncks owned by the region.
 363  *
 364  * This implementation uses a very simple dma page manager
 365  * based on the dma_chunk structure.  This scheme assumes
 366  * that all drivers use very well behaved dma ops.
 367  */
 368 
 369 struct dma_chunk {
 370         struct ps3_dma_region *region;
 371         unsigned long lpar_addr;
 372         unsigned long bus_addr;
 373         unsigned long len;
 374         struct list_head link;
 375         unsigned int usage_count;
 376 };
 377 
 378 #define dma_dump_chunk(_a) _dma_dump_chunk(_a, __func__, __LINE__)
 379 static void _dma_dump_chunk (const struct dma_chunk* c, const char* func,
 380         int line)
 381 {
 382         DBG("%s:%d: r.dev        %llu:%llu\n", func, line,
 383                 c->region->dev->bus_id, c->region->dev->dev_id);
 384         DBG("%s:%d: r.bus_addr   %lxh\n", func, line, c->region->bus_addr);
 385         DBG("%s:%d: r.page_size  %u\n", func, line, c->region->page_size);
 386         DBG("%s:%d: r.len        %lxh\n", func, line, c->region->len);
 387         DBG("%s:%d: r.offset     %lxh\n", func, line, c->region->offset);
 388         DBG("%s:%d: c.lpar_addr  %lxh\n", func, line, c->lpar_addr);
 389         DBG("%s:%d: c.bus_addr   %lxh\n", func, line, c->bus_addr);
 390         DBG("%s:%d: c.len        %lxh\n", func, line, c->len);
 391 }
 392 
 393 static struct dma_chunk * dma_find_chunk(struct ps3_dma_region *r,
 394         unsigned long bus_addr, unsigned long len)
 395 {
 396         struct dma_chunk *c;
 397         unsigned long aligned_bus = _ALIGN_DOWN(bus_addr, 1 << r->page_size);
 398         unsigned long aligned_len = _ALIGN_UP(len+bus_addr-aligned_bus,
 399                                               1 << r->page_size);
 400 
 401         list_for_each_entry(c, &r->chunk_list.head, link) {
 402                 /* intersection */
 403                 if (aligned_bus >= c->bus_addr &&
 404                     aligned_bus + aligned_len <= c->bus_addr + c->len)
 405                         return c;
 406 
 407                 /* below */
 408                 if (aligned_bus + aligned_len <= c->bus_addr)
 409                         continue;
 410 
 411                 /* above */
 412                 if (aligned_bus >= c->bus_addr + c->len)
 413                         continue;
 414 
 415                 /* we don't handle the multi-chunk case for now */
 416                 dma_dump_chunk(c);
 417                 BUG();
 418         }
 419         return NULL;
 420 }
 421 
 422 static struct dma_chunk *dma_find_chunk_lpar(struct ps3_dma_region *r,
 423         unsigned long lpar_addr, unsigned long len)
 424 {
 425         struct dma_chunk *c;
 426         unsigned long aligned_lpar = _ALIGN_DOWN(lpar_addr, 1 << r->page_size);
 427         unsigned long aligned_len = _ALIGN_UP(len + lpar_addr - aligned_lpar,
 428                                               1 << r->page_size);
 429 
 430         list_for_each_entry(c, &r->chunk_list.head, link) {
 431                 /* intersection */
 432                 if (c->lpar_addr <= aligned_lpar &&
 433                     aligned_lpar < c->lpar_addr + c->len) {
 434                         if (aligned_lpar + aligned_len <= c->lpar_addr + c->len)
 435                                 return c;
 436                         else {
 437                                 dma_dump_chunk(c);
 438                                 BUG();
 439                         }
 440                 }
 441                 /* below */
 442                 if (aligned_lpar + aligned_len <= c->lpar_addr) {
 443                         continue;
 444                 }
 445                 /* above */
 446                 if (c->lpar_addr + c->len <= aligned_lpar) {
 447                         continue;
 448                 }
 449         }
 450         return NULL;
 451 }
 452 
 453 static int dma_sb_free_chunk(struct dma_chunk *c)
 454 {
 455         int result = 0;
 456 
 457         if (c->bus_addr) {
 458                 result = lv1_unmap_device_dma_region(c->region->dev->bus_id,
 459                         c->region->dev->dev_id, c->bus_addr, c->len);
 460                 BUG_ON(result);
 461         }
 462 
 463         kfree(c);
 464         return result;
 465 }
 466 
 467 static int dma_ioc0_free_chunk(struct dma_chunk *c)
 468 {
 469         int result = 0;
 470         int iopage;
 471         unsigned long offset;
 472         struct ps3_dma_region *r = c->region;
 473 
 474         DBG("%s:start\n", __func__);
 475         for (iopage = 0; iopage < (c->len >> r->page_size); iopage++) {
 476                 offset = (1 << r->page_size) * iopage;
 477                 /* put INVALID entry */
 478                 result = lv1_put_iopte(0,
 479                                        c->bus_addr + offset,
 480                                        c->lpar_addr + offset,
 481                                        r->ioid,
 482                                        0);
 483                 DBG("%s: bus=%#lx, lpar=%#lx, ioid=%d\n", __func__,
 484                     c->bus_addr + offset,
 485                     c->lpar_addr + offset,
 486                     r->ioid);
 487 
 488                 if (result) {
 489                         DBG("%s:%d: lv1_put_iopte failed: %s\n", __func__,
 490                             __LINE__, ps3_result(result));
 491                 }
 492         }
 493         kfree(c);
 494         DBG("%s:end\n", __func__);
 495         return result;
 496 }
 497 
 498 /**
 499  * dma_sb_map_pages - Maps dma pages into the io controller bus address space.
 500  * @r: Pointer to a struct ps3_dma_region.
 501  * @phys_addr: Starting physical address of the area to map.
 502  * @len: Length in bytes of the area to map.
 503  * c_out: A pointer to receive an allocated struct dma_chunk for this area.
 504  *
 505  * This is the lowest level dma mapping routine, and is the one that will
 506  * make the HV call to add the pages into the io controller address space.
 507  */
 508 
 509 static int dma_sb_map_pages(struct ps3_dma_region *r, unsigned long phys_addr,
 510             unsigned long len, struct dma_chunk **c_out, u64 iopte_flag)
 511 {
 512         int result;
 513         struct dma_chunk *c;
 514 
 515         c = kzalloc(sizeof(*c), GFP_ATOMIC);
 516         if (!c) {
 517                 result = -ENOMEM;
 518                 goto fail_alloc;
 519         }
 520 
 521         c->region = r;
 522         c->lpar_addr = ps3_mm_phys_to_lpar(phys_addr);
 523         c->bus_addr = dma_sb_lpar_to_bus(r, c->lpar_addr);
 524         c->len = len;
 525 
 526         BUG_ON(iopte_flag != 0xf800000000000000UL);
 527         result = lv1_map_device_dma_region(c->region->dev->bus_id,
 528                                            c->region->dev->dev_id, c->lpar_addr,
 529                                            c->bus_addr, c->len, iopte_flag);
 530         if (result) {
 531                 DBG("%s:%d: lv1_map_device_dma_region failed: %s\n",
 532                         __func__, __LINE__, ps3_result(result));
 533                 goto fail_map;
 534         }
 535 
 536         list_add(&c->link, &r->chunk_list.head);
 537 
 538         *c_out = c;
 539         return 0;
 540 
 541 fail_map:
 542         kfree(c);
 543 fail_alloc:
 544         *c_out = NULL;
 545         DBG(" <- %s:%d\n", __func__, __LINE__);
 546         return result;
 547 }
 548 
 549 static int dma_ioc0_map_pages(struct ps3_dma_region *r, unsigned long phys_addr,
 550                               unsigned long len, struct dma_chunk **c_out,
 551                               u64 iopte_flag)
 552 {
 553         int result;
 554         struct dma_chunk *c, *last;
 555         int iopage, pages;
 556         unsigned long offset;
 557 
 558         DBG(KERN_ERR "%s: phy=%#lx, lpar%#lx, len=%#lx\n", __func__,
 559             phys_addr, ps3_mm_phys_to_lpar(phys_addr), len);
 560         c = kzalloc(sizeof(*c), GFP_ATOMIC);
 561         if (!c) {
 562                 result = -ENOMEM;
 563                 goto fail_alloc;
 564         }
 565 
 566         c->region = r;
 567         c->len = len;
 568         c->lpar_addr = ps3_mm_phys_to_lpar(phys_addr);
 569         /* allocate IO address */
 570         if (list_empty(&r->chunk_list.head)) {
 571                 /* first one */
 572                 c->bus_addr = r->bus_addr;
 573         } else {
 574                 /* derive from last bus addr*/
 575                 last  = list_entry(r->chunk_list.head.next,
 576                                    struct dma_chunk, link);
 577                 c->bus_addr = last->bus_addr + last->len;
 578                 DBG("%s: last bus=%#lx, len=%#lx\n", __func__,
 579                     last->bus_addr, last->len);
 580         }
 581 
 582         /* FIXME: check whether length exceeds region size */
 583 
 584         /* build ioptes for the area */
 585         pages = len >> r->page_size;
 586         DBG("%s: pgsize=%#x len=%#lx pages=%#x iopteflag=%#llx\n", __func__,
 587             r->page_size, r->len, pages, iopte_flag);
 588         for (iopage = 0; iopage < pages; iopage++) {
 589                 offset = (1 << r->page_size) * iopage;
 590                 result = lv1_put_iopte(0,
 591                                        c->bus_addr + offset,
 592                                        c->lpar_addr + offset,
 593                                        r->ioid,
 594                                        iopte_flag);
 595                 if (result) {
 596                         pr_warn("%s:%d: lv1_put_iopte failed: %s\n",
 597                                 __func__, __LINE__, ps3_result(result));
 598                         goto fail_map;
 599                 }
 600                 DBG("%s: pg=%d bus=%#lx, lpar=%#lx, ioid=%#x\n", __func__,
 601                     iopage, c->bus_addr + offset, c->lpar_addr + offset,
 602                     r->ioid);
 603         }
 604 
 605         /* be sure that last allocated one is inserted at head */
 606         list_add(&c->link, &r->chunk_list.head);
 607 
 608         *c_out = c;
 609         DBG("%s: end\n", __func__);
 610         return 0;
 611 
 612 fail_map:
 613         for (iopage--; 0 <= iopage; iopage--) {
 614                 lv1_put_iopte(0,
 615                               c->bus_addr + offset,
 616                               c->lpar_addr + offset,
 617                               r->ioid,
 618                               0);
 619         }
 620         kfree(c);
 621 fail_alloc:
 622         *c_out = NULL;
 623         return result;
 624 }
 625 
 626 /**
 627  * dma_sb_region_create - Create a device dma region.
 628  * @r: Pointer to a struct ps3_dma_region.
 629  *
 630  * This is the lowest level dma region create routine, and is the one that
 631  * will make the HV call to create the region.
 632  */
 633 
 634 static int dma_sb_region_create(struct ps3_dma_region *r)
 635 {
 636         int result;
 637         u64 bus_addr;
 638 
 639         DBG(" -> %s:%d:\n", __func__, __LINE__);
 640 
 641         BUG_ON(!r);
 642 
 643         if (!r->dev->bus_id) {
 644                 pr_info("%s:%d: %llu:%llu no dma\n", __func__, __LINE__,
 645                         r->dev->bus_id, r->dev->dev_id);
 646                 return 0;
 647         }
 648 
 649         DBG("%s:%u: len = 0x%lx, page_size = %u, offset = 0x%lx\n", __func__,
 650             __LINE__, r->len, r->page_size, r->offset);
 651 
 652         BUG_ON(!r->len);
 653         BUG_ON(!r->page_size);
 654         BUG_ON(!r->region_ops);
 655 
 656         INIT_LIST_HEAD(&r->chunk_list.head);
 657         spin_lock_init(&r->chunk_list.lock);
 658 
 659         result = lv1_allocate_device_dma_region(r->dev->bus_id, r->dev->dev_id,
 660                 roundup_pow_of_two(r->len), r->page_size, r->region_type,
 661                 &bus_addr);
 662         r->bus_addr = bus_addr;
 663 
 664         if (result) {
 665                 DBG("%s:%d: lv1_allocate_device_dma_region failed: %s\n",
 666                         __func__, __LINE__, ps3_result(result));
 667                 r->len = r->bus_addr = 0;
 668         }
 669 
 670         return result;
 671 }
 672 
 673 static int dma_ioc0_region_create(struct ps3_dma_region *r)
 674 {
 675         int result;
 676         u64 bus_addr;
 677 
 678         INIT_LIST_HEAD(&r->chunk_list.head);
 679         spin_lock_init(&r->chunk_list.lock);
 680 
 681         result = lv1_allocate_io_segment(0,
 682                                          r->len,
 683                                          r->page_size,
 684                                          &bus_addr);
 685         r->bus_addr = bus_addr;
 686         if (result) {
 687                 DBG("%s:%d: lv1_allocate_io_segment failed: %s\n",
 688                         __func__, __LINE__, ps3_result(result));
 689                 r->len = r->bus_addr = 0;
 690         }
 691         DBG("%s: len=%#lx, pg=%d, bus=%#lx\n", __func__,
 692             r->len, r->page_size, r->bus_addr);
 693         return result;
 694 }
 695 
 696 /**
 697  * dma_region_free - Free a device dma region.
 698  * @r: Pointer to a struct ps3_dma_region.
 699  *
 700  * This is the lowest level dma region free routine, and is the one that
 701  * will make the HV call to free the region.
 702  */
 703 
 704 static int dma_sb_region_free(struct ps3_dma_region *r)
 705 {
 706         int result;
 707         struct dma_chunk *c;
 708         struct dma_chunk *tmp;
 709 
 710         BUG_ON(!r);
 711 
 712         if (!r->dev->bus_id) {
 713                 pr_info("%s:%d: %llu:%llu no dma\n", __func__, __LINE__,
 714                         r->dev->bus_id, r->dev->dev_id);
 715                 return 0;
 716         }
 717 
 718         list_for_each_entry_safe(c, tmp, &r->chunk_list.head, link) {
 719                 list_del(&c->link);
 720                 dma_sb_free_chunk(c);
 721         }
 722 
 723         result = lv1_free_device_dma_region(r->dev->bus_id, r->dev->dev_id,
 724                 r->bus_addr);
 725 
 726         if (result)
 727                 DBG("%s:%d: lv1_free_device_dma_region failed: %s\n",
 728                         __func__, __LINE__, ps3_result(result));
 729 
 730         r->bus_addr = 0;
 731 
 732         return result;
 733 }
 734 
 735 static int dma_ioc0_region_free(struct ps3_dma_region *r)
 736 {
 737         int result;
 738         struct dma_chunk *c, *n;
 739 
 740         DBG("%s: start\n", __func__);
 741         list_for_each_entry_safe(c, n, &r->chunk_list.head, link) {
 742                 list_del(&c->link);
 743                 dma_ioc0_free_chunk(c);
 744         }
 745 
 746         result = lv1_release_io_segment(0, r->bus_addr);
 747 
 748         if (result)
 749                 DBG("%s:%d: lv1_free_device_dma_region failed: %s\n",
 750                         __func__, __LINE__, ps3_result(result));
 751 
 752         r->bus_addr = 0;
 753         DBG("%s: end\n", __func__);
 754 
 755         return result;
 756 }
 757 
 758 /**
 759  * dma_sb_map_area - Map an area of memory into a device dma region.
 760  * @r: Pointer to a struct ps3_dma_region.
 761  * @virt_addr: Starting virtual address of the area to map.
 762  * @len: Length in bytes of the area to map.
 763  * @bus_addr: A pointer to return the starting ioc bus address of the area to
 764  * map.
 765  *
 766  * This is the common dma mapping routine.
 767  */
 768 
 769 static int dma_sb_map_area(struct ps3_dma_region *r, unsigned long virt_addr,
 770            unsigned long len, dma_addr_t *bus_addr,
 771            u64 iopte_flag)
 772 {
 773         int result;
 774         unsigned long flags;
 775         struct dma_chunk *c;
 776         unsigned long phys_addr = is_kernel_addr(virt_addr) ? __pa(virt_addr)
 777                 : virt_addr;
 778         unsigned long aligned_phys = _ALIGN_DOWN(phys_addr, 1 << r->page_size);
 779         unsigned long aligned_len = _ALIGN_UP(len + phys_addr - aligned_phys,
 780                                               1 << r->page_size);
 781         *bus_addr = dma_sb_lpar_to_bus(r, ps3_mm_phys_to_lpar(phys_addr));
 782 
 783         if (!USE_DYNAMIC_DMA) {
 784                 unsigned long lpar_addr = ps3_mm_phys_to_lpar(phys_addr);
 785                 DBG(" -> %s:%d\n", __func__, __LINE__);
 786                 DBG("%s:%d virt_addr %lxh\n", __func__, __LINE__,
 787                         virt_addr);
 788                 DBG("%s:%d phys_addr %lxh\n", __func__, __LINE__,
 789                         phys_addr);
 790                 DBG("%s:%d lpar_addr %lxh\n", __func__, __LINE__,
 791                         lpar_addr);
 792                 DBG("%s:%d len       %lxh\n", __func__, __LINE__, len);
 793                 DBG("%s:%d bus_addr  %llxh (%lxh)\n", __func__, __LINE__,
 794                 *bus_addr, len);
 795         }
 796 
 797         spin_lock_irqsave(&r->chunk_list.lock, flags);
 798         c = dma_find_chunk(r, *bus_addr, len);
 799 
 800         if (c) {
 801                 DBG("%s:%d: reusing mapped chunk", __func__, __LINE__);
 802                 dma_dump_chunk(c);
 803                 c->usage_count++;
 804                 spin_unlock_irqrestore(&r->chunk_list.lock, flags);
 805                 return 0;
 806         }
 807 
 808         result = dma_sb_map_pages(r, aligned_phys, aligned_len, &c, iopte_flag);
 809 
 810         if (result) {
 811                 *bus_addr = 0;
 812                 DBG("%s:%d: dma_sb_map_pages failed (%d)\n",
 813                         __func__, __LINE__, result);
 814                 spin_unlock_irqrestore(&r->chunk_list.lock, flags);
 815                 return result;
 816         }
 817 
 818         c->usage_count = 1;
 819 
 820         spin_unlock_irqrestore(&r->chunk_list.lock, flags);
 821         return result;
 822 }
 823 
 824 static int dma_ioc0_map_area(struct ps3_dma_region *r, unsigned long virt_addr,
 825              unsigned long len, dma_addr_t *bus_addr,
 826              u64 iopte_flag)
 827 {
 828         int result;
 829         unsigned long flags;
 830         struct dma_chunk *c;
 831         unsigned long phys_addr = is_kernel_addr(virt_addr) ? __pa(virt_addr)
 832                 : virt_addr;
 833         unsigned long aligned_phys = _ALIGN_DOWN(phys_addr, 1 << r->page_size);
 834         unsigned long aligned_len = _ALIGN_UP(len + phys_addr - aligned_phys,
 835                                               1 << r->page_size);
 836 
 837         DBG(KERN_ERR "%s: vaddr=%#lx, len=%#lx\n", __func__,
 838             virt_addr, len);
 839         DBG(KERN_ERR "%s: ph=%#lx a_ph=%#lx a_l=%#lx\n", __func__,
 840             phys_addr, aligned_phys, aligned_len);
 841 
 842         spin_lock_irqsave(&r->chunk_list.lock, flags);
 843         c = dma_find_chunk_lpar(r, ps3_mm_phys_to_lpar(phys_addr), len);
 844 
 845         if (c) {
 846                 /* FIXME */
 847                 BUG();
 848                 *bus_addr = c->bus_addr + phys_addr - aligned_phys;
 849                 c->usage_count++;
 850                 spin_unlock_irqrestore(&r->chunk_list.lock, flags);
 851                 return 0;
 852         }
 853 
 854         result = dma_ioc0_map_pages(r, aligned_phys, aligned_len, &c,
 855                                     iopte_flag);
 856 
 857         if (result) {
 858                 *bus_addr = 0;
 859                 DBG("%s:%d: dma_ioc0_map_pages failed (%d)\n",
 860                         __func__, __LINE__, result);
 861                 spin_unlock_irqrestore(&r->chunk_list.lock, flags);
 862                 return result;
 863         }
 864         *bus_addr = c->bus_addr + phys_addr - aligned_phys;
 865         DBG("%s: va=%#lx pa=%#lx a_pa=%#lx bus=%#llx\n", __func__,
 866             virt_addr, phys_addr, aligned_phys, *bus_addr);
 867         c->usage_count = 1;
 868 
 869         spin_unlock_irqrestore(&r->chunk_list.lock, flags);
 870         return result;
 871 }
 872 
 873 /**
 874  * dma_sb_unmap_area - Unmap an area of memory from a device dma region.
 875  * @r: Pointer to a struct ps3_dma_region.
 876  * @bus_addr: The starting ioc bus address of the area to unmap.
 877  * @len: Length in bytes of the area to unmap.
 878  *
 879  * This is the common dma unmap routine.
 880  */
 881 
 882 static int dma_sb_unmap_area(struct ps3_dma_region *r, dma_addr_t bus_addr,
 883         unsigned long len)
 884 {
 885         unsigned long flags;
 886         struct dma_chunk *c;
 887 
 888         spin_lock_irqsave(&r->chunk_list.lock, flags);
 889         c = dma_find_chunk(r, bus_addr, len);
 890 
 891         if (!c) {
 892                 unsigned long aligned_bus = _ALIGN_DOWN(bus_addr,
 893                         1 << r->page_size);
 894                 unsigned long aligned_len = _ALIGN_UP(len + bus_addr
 895                         - aligned_bus, 1 << r->page_size);
 896                 DBG("%s:%d: not found: bus_addr %llxh\n",
 897                         __func__, __LINE__, bus_addr);
 898                 DBG("%s:%d: not found: len %lxh\n",
 899                         __func__, __LINE__, len);
 900                 DBG("%s:%d: not found: aligned_bus %lxh\n",
 901                         __func__, __LINE__, aligned_bus);
 902                 DBG("%s:%d: not found: aligned_len %lxh\n",
 903                         __func__, __LINE__, aligned_len);
 904                 BUG();
 905         }
 906 
 907         c->usage_count--;
 908 
 909         if (!c->usage_count) {
 910                 list_del(&c->link);
 911                 dma_sb_free_chunk(c);
 912         }
 913 
 914         spin_unlock_irqrestore(&r->chunk_list.lock, flags);
 915         return 0;
 916 }
 917 
 918 static int dma_ioc0_unmap_area(struct ps3_dma_region *r,
 919                         dma_addr_t bus_addr, unsigned long len)
 920 {
 921         unsigned long flags;
 922         struct dma_chunk *c;
 923 
 924         DBG("%s: start a=%#llx l=%#lx\n", __func__, bus_addr, len);
 925         spin_lock_irqsave(&r->chunk_list.lock, flags);
 926         c = dma_find_chunk(r, bus_addr, len);
 927 
 928         if (!c) {
 929                 unsigned long aligned_bus = _ALIGN_DOWN(bus_addr,
 930                                                         1 << r->page_size);
 931                 unsigned long aligned_len = _ALIGN_UP(len + bus_addr
 932                                                       - aligned_bus,
 933                                                       1 << r->page_size);
 934                 DBG("%s:%d: not found: bus_addr %llxh\n",
 935                     __func__, __LINE__, bus_addr);
 936                 DBG("%s:%d: not found: len %lxh\n",
 937                     __func__, __LINE__, len);
 938                 DBG("%s:%d: not found: aligned_bus %lxh\n",
 939                     __func__, __LINE__, aligned_bus);
 940                 DBG("%s:%d: not found: aligned_len %lxh\n",
 941                     __func__, __LINE__, aligned_len);
 942                 BUG();
 943         }
 944 
 945         c->usage_count--;
 946 
 947         if (!c->usage_count) {
 948                 list_del(&c->link);
 949                 dma_ioc0_free_chunk(c);
 950         }
 951 
 952         spin_unlock_irqrestore(&r->chunk_list.lock, flags);
 953         DBG("%s: end\n", __func__);
 954         return 0;
 955 }
 956 
 957 /**
 958  * dma_sb_region_create_linear - Setup a linear dma mapping for a device.
 959  * @r: Pointer to a struct ps3_dma_region.
 960  *
 961  * This routine creates an HV dma region for the device and maps all available
 962  * ram into the io controller bus address space.
 963  */
 964 
 965 static int dma_sb_region_create_linear(struct ps3_dma_region *r)
 966 {
 967         int result;
 968         unsigned long virt_addr, len;
 969         dma_addr_t tmp;
 970 
 971         if (r->len > 16*1024*1024) {    /* FIXME: need proper fix */
 972                 /* force 16M dma pages for linear mapping */
 973                 if (r->page_size != PS3_DMA_16M) {
 974                         pr_info("%s:%d: forcing 16M pages for linear map\n",
 975                                 __func__, __LINE__);
 976                         r->page_size = PS3_DMA_16M;
 977                         r->len = _ALIGN_UP(r->len, 1 << r->page_size);
 978                 }
 979         }
 980 
 981         result = dma_sb_region_create(r);
 982         BUG_ON(result);
 983 
 984         if (r->offset < map.rm.size) {
 985                 /* Map (part of) 1st RAM chunk */
 986                 virt_addr = map.rm.base + r->offset;
 987                 len = map.rm.size - r->offset;
 988                 if (len > r->len)
 989                         len = r->len;
 990                 result = dma_sb_map_area(r, virt_addr, len, &tmp,
 991                         CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | CBE_IOPTE_SO_RW |
 992                         CBE_IOPTE_M);
 993                 BUG_ON(result);
 994         }
 995 
 996         if (r->offset + r->len > map.rm.size) {
 997                 /* Map (part of) 2nd RAM chunk */
 998                 virt_addr = map.rm.size;
 999                 len = r->len;
1000                 if (r->offset >= map.rm.size)
1001                         virt_addr += r->offset - map.rm.size;
1002                 else
1003                         len -= map.rm.size - r->offset;
1004                 result = dma_sb_map_area(r, virt_addr, len, &tmp,
1005                         CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | CBE_IOPTE_SO_RW |
1006                         CBE_IOPTE_M);
1007                 BUG_ON(result);
1008         }
1009 
1010         return result;
1011 }
1012 
1013 /**
1014  * dma_sb_region_free_linear - Free a linear dma mapping for a device.
1015  * @r: Pointer to a struct ps3_dma_region.
1016  *
1017  * This routine will unmap all mapped areas and free the HV dma region.
1018  */
1019 
1020 static int dma_sb_region_free_linear(struct ps3_dma_region *r)
1021 {
1022         int result;
1023         dma_addr_t bus_addr;
1024         unsigned long len, lpar_addr;
1025 
1026         if (r->offset < map.rm.size) {
1027                 /* Unmap (part of) 1st RAM chunk */
1028                 lpar_addr = map.rm.base + r->offset;
1029                 len = map.rm.size - r->offset;
1030                 if (len > r->len)
1031                         len = r->len;
1032                 bus_addr = dma_sb_lpar_to_bus(r, lpar_addr);
1033                 result = dma_sb_unmap_area(r, bus_addr, len);
1034                 BUG_ON(result);
1035         }
1036 
1037         if (r->offset + r->len > map.rm.size) {
1038                 /* Unmap (part of) 2nd RAM chunk */
1039                 lpar_addr = map.r1.base;
1040                 len = r->len;
1041                 if (r->offset >= map.rm.size)
1042                         lpar_addr += r->offset - map.rm.size;
1043                 else
1044                         len -= map.rm.size - r->offset;
1045                 bus_addr = dma_sb_lpar_to_bus(r, lpar_addr);
1046                 result = dma_sb_unmap_area(r, bus_addr, len);
1047                 BUG_ON(result);
1048         }
1049 
1050         result = dma_sb_region_free(r);
1051         BUG_ON(result);
1052 
1053         return result;
1054 }
1055 
1056 /**
1057  * dma_sb_map_area_linear - Map an area of memory into a device dma region.
1058  * @r: Pointer to a struct ps3_dma_region.
1059  * @virt_addr: Starting virtual address of the area to map.
1060  * @len: Length in bytes of the area to map.
1061  * @bus_addr: A pointer to return the starting ioc bus address of the area to
1062  * map.
1063  *
1064  * This routine just returns the corresponding bus address.  Actual mapping
1065  * occurs in dma_region_create_linear().
1066  */
1067 
1068 static int dma_sb_map_area_linear(struct ps3_dma_region *r,
1069         unsigned long virt_addr, unsigned long len, dma_addr_t *bus_addr,
1070         u64 iopte_flag)
1071 {
1072         unsigned long phys_addr = is_kernel_addr(virt_addr) ? __pa(virt_addr)
1073                 : virt_addr;
1074         *bus_addr = dma_sb_lpar_to_bus(r, ps3_mm_phys_to_lpar(phys_addr));
1075         return 0;
1076 }
1077 
1078 /**
1079  * dma_unmap_area_linear - Unmap an area of memory from a device dma region.
1080  * @r: Pointer to a struct ps3_dma_region.
1081  * @bus_addr: The starting ioc bus address of the area to unmap.
1082  * @len: Length in bytes of the area to unmap.
1083  *
1084  * This routine does nothing.  Unmapping occurs in dma_sb_region_free_linear().
1085  */
1086 
1087 static int dma_sb_unmap_area_linear(struct ps3_dma_region *r,
1088         dma_addr_t bus_addr, unsigned long len)
1089 {
1090         return 0;
1091 };
1092 
1093 static const struct ps3_dma_region_ops ps3_dma_sb_region_ops =  {
1094         .create = dma_sb_region_create,
1095         .free = dma_sb_region_free,
1096         .map = dma_sb_map_area,
1097         .unmap = dma_sb_unmap_area
1098 };
1099 
1100 static const struct ps3_dma_region_ops ps3_dma_sb_region_linear_ops = {
1101         .create = dma_sb_region_create_linear,
1102         .free = dma_sb_region_free_linear,
1103         .map = dma_sb_map_area_linear,
1104         .unmap = dma_sb_unmap_area_linear
1105 };
1106 
1107 static const struct ps3_dma_region_ops ps3_dma_ioc0_region_ops = {
1108         .create = dma_ioc0_region_create,
1109         .free = dma_ioc0_region_free,
1110         .map = dma_ioc0_map_area,
1111         .unmap = dma_ioc0_unmap_area
1112 };
1113 
1114 int ps3_dma_region_init(struct ps3_system_bus_device *dev,
1115         struct ps3_dma_region *r, enum ps3_dma_page_size page_size,
1116         enum ps3_dma_region_type region_type, void *addr, unsigned long len)
1117 {
1118         unsigned long lpar_addr;
1119 
1120         lpar_addr = addr ? ps3_mm_phys_to_lpar(__pa(addr)) : 0;
1121 
1122         r->dev = dev;
1123         r->page_size = page_size;
1124         r->region_type = region_type;
1125         r->offset = lpar_addr;
1126         if (r->offset >= map.rm.size)
1127                 r->offset -= map.r1.offset;
1128         r->len = len ? len : _ALIGN_UP(map.total, 1 << r->page_size);
1129 
1130         switch (dev->dev_type) {
1131         case PS3_DEVICE_TYPE_SB:
1132                 r->region_ops =  (USE_DYNAMIC_DMA)
1133                         ? &ps3_dma_sb_region_ops
1134                         : &ps3_dma_sb_region_linear_ops;
1135                 break;
1136         case PS3_DEVICE_TYPE_IOC0:
1137                 r->region_ops = &ps3_dma_ioc0_region_ops;
1138                 break;
1139         default:
1140                 BUG();
1141                 return -EINVAL;
1142         }
1143         return 0;
1144 }
1145 EXPORT_SYMBOL(ps3_dma_region_init);
1146 
1147 int ps3_dma_region_create(struct ps3_dma_region *r)
1148 {
1149         BUG_ON(!r);
1150         BUG_ON(!r->region_ops);
1151         BUG_ON(!r->region_ops->create);
1152         return r->region_ops->create(r);
1153 }
1154 EXPORT_SYMBOL(ps3_dma_region_create);
1155 
1156 int ps3_dma_region_free(struct ps3_dma_region *r)
1157 {
1158         BUG_ON(!r);
1159         BUG_ON(!r->region_ops);
1160         BUG_ON(!r->region_ops->free);
1161         return r->region_ops->free(r);
1162 }
1163 EXPORT_SYMBOL(ps3_dma_region_free);
1164 
1165 int ps3_dma_map(struct ps3_dma_region *r, unsigned long virt_addr,
1166         unsigned long len, dma_addr_t *bus_addr,
1167         u64 iopte_flag)
1168 {
1169         return r->region_ops->map(r, virt_addr, len, bus_addr, iopte_flag);
1170 }
1171 
1172 int ps3_dma_unmap(struct ps3_dma_region *r, dma_addr_t bus_addr,
1173         unsigned long len)
1174 {
1175         return r->region_ops->unmap(r, bus_addr, len);
1176 }
1177 
1178 /*============================================================================*/
1179 /* system startup routines                                                    */
1180 /*============================================================================*/
1181 
1182 /**
1183  * ps3_mm_init - initialize the address space state variables
1184  */
1185 
1186 void __init ps3_mm_init(void)
1187 {
1188         int result;
1189 
1190         DBG(" -> %s:%d\n", __func__, __LINE__);
1191 
1192         result = ps3_repository_read_mm_info(&map.rm.base, &map.rm.size,
1193                 &map.total);
1194 
1195         if (result)
1196                 panic("ps3_repository_read_mm_info() failed");
1197 
1198         map.rm.offset = map.rm.base;
1199         map.vas_id = map.htab_size = 0;
1200 
1201         /* this implementation assumes map.rm.base is zero */
1202 
1203         BUG_ON(map.rm.base);
1204         BUG_ON(!map.rm.size);
1205 
1206         /* Check if we got the highmem region from an earlier boot step */
1207 
1208         if (ps3_mm_get_repository_highmem(&map.r1)) {
1209                 result = ps3_mm_region_create(&map.r1, map.total - map.rm.size);
1210 
1211                 if (!result)
1212                         ps3_mm_set_repository_highmem(&map.r1);
1213         }
1214 
1215         /* correct map.total for the real total amount of memory we use */
1216         map.total = map.rm.size + map.r1.size;
1217 
1218         if (!map.r1.size) {
1219                 DBG("%s:%d: No highmem region found\n", __func__, __LINE__);
1220         } else {
1221                 DBG("%s:%d: Adding highmem region: %llxh %llxh\n",
1222                         __func__, __LINE__, map.rm.size,
1223                         map.total - map.rm.size);
1224                 memblock_add(map.rm.size, map.total - map.rm.size);
1225         }
1226 
1227         DBG(" <- %s:%d\n", __func__, __LINE__);
1228 }
1229 
1230 /**
1231  * ps3_mm_shutdown - final cleanup of address space
1232  */
1233 
1234 void ps3_mm_shutdown(void)
1235 {
1236         ps3_mm_region_destroy(&map.r1);
1237 }
/* [<][>][^][v][top][bottom][index][help] */
root/arch/powerpc/platforms/ps3/mm.c

DEFINITIONS
