drivers/bus/fsl-mc/fsl-mc-allocator.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * fsl-mc object allocator driver
   4  *
   5  * Copyright (C) 2013-2016 Freescale Semiconductor, Inc.
   6  *
   7  */
   8
   9 #include <linux/module.h>
  10 #include <linux/msi.h>
  11 #include <linux/fsl/mc.h>
  12
  13 #include "fsl-mc-private.h"
  14
  15 static bool __must_check fsl_mc_is_allocatable(struct fsl_mc_device *mc_dev)
  16 {
  17         return is_fsl_mc_bus_dpbp(mc_dev) ||
  18                is_fsl_mc_bus_dpmcp(mc_dev) ||
  19                is_fsl_mc_bus_dpcon(mc_dev);
  20 }
  21
  22 /**
  23  * fsl_mc_resource_pool_add_device - add allocatable object to a resource
  24  * pool of a given fsl-mc bus
  25  *
  26  * @mc_bus: pointer to the fsl-mc bus
  27  * @pool_type: pool type
  28  * @mc_dev: pointer to allocatable fsl-mc device
  29  */
  30 static int __must_check fsl_mc_resource_pool_add_device(struct fsl_mc_bus
  31                                                                 *mc_bus,
  32                                                         enum fsl_mc_pool_type
  33                                                                 pool_type,
  34                                                         struct fsl_mc_device
  35                                                                 *mc_dev)
  36 {
  37         struct fsl_mc_resource_pool *res_pool;
  38         struct fsl_mc_resource *resource;
  39         struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
  40         int error = -EINVAL;
  41
  42         if (pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES)
  43                 goto out;
  44         if (!fsl_mc_is_allocatable(mc_dev))
  45                 goto out;
  46         if (mc_dev->resource)
  47                 goto out;
  48
  49         res_pool = &mc_bus->resource_pools[pool_type];
  50         if (res_pool->type != pool_type)
  51                 goto out;
  52         if (res_pool->mc_bus != mc_bus)
  53                 goto out;
  54
  55         mutex_lock(&res_pool->mutex);
  56
  57         if (res_pool->max_count < 0)
  58                 goto out_unlock;
  59         if (res_pool->free_count < 0 ||
  60             res_pool->free_count > res_pool->max_count)
  61                 goto out_unlock;
  62
  63         resource = devm_kzalloc(&mc_bus_dev->dev, sizeof(*resource),
  64                                 GFP_KERNEL);
  65         if (!resource) {
  66                 error = -ENOMEM;
  67                 dev_err(&mc_bus_dev->dev,
  68                         "Failed to allocate memory for fsl_mc_resource\n");
  69                 goto out_unlock;
  70         }
  71
  72         resource->type = pool_type;
  73         resource->id = mc_dev->obj_desc.id;
  74         resource->data = mc_dev;
  75         resource->parent_pool = res_pool;
  76         INIT_LIST_HEAD(&resource->node);
  77         list_add_tail(&resource->node, &res_pool->free_list);
  78         mc_dev->resource = resource;
  79         res_pool->free_count++;
  80         res_pool->max_count++;
  81         error = 0;
  82 out_unlock:
  83         mutex_unlock(&res_pool->mutex);
  84 out:
  85         return error;
  86 }
  87
  88 /**
  89  * fsl_mc_resource_pool_remove_device - remove an allocatable device from a
  90  * resource pool
  91  *
  92  * @mc_dev: pointer to allocatable fsl-mc device
  93  *
  94  * It permanently removes an allocatable fsl-mc device from the resource
  95  * pool. It's an error if the device is in use.
  96  */
  97 static int __must_check fsl_mc_resource_pool_remove_device(struct fsl_mc_device
  98                                                                    *mc_dev)
  99 {
 100         struct fsl_mc_device *mc_bus_dev;
 101         struct fsl_mc_bus *mc_bus;
 102         struct fsl_mc_resource_pool *res_pool;
 103         struct fsl_mc_resource *resource;
 104         int error = -EINVAL;
 105
 106         if (!fsl_mc_is_allocatable(mc_dev))
 107                 goto out;
 108
 109         resource = mc_dev->resource;
 110         if (!resource || resource->data != mc_dev)
 111                 goto out;
 112
 113         mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
 114         mc_bus = to_fsl_mc_bus(mc_bus_dev);
 115         res_pool = resource->parent_pool;
 116         if (res_pool != &mc_bus->resource_pools[resource->type])
 117                 goto out;
 118
 119         mutex_lock(&res_pool->mutex);
 120
 121         if (res_pool->max_count <= 0)
 122                 goto out_unlock;
 123         if (res_pool->free_count <= 0 ||
 124             res_pool->free_count > res_pool->max_count)
 125                 goto out_unlock;
 126
 127         /*
 128          * If the device is currently allocated, its resource is not
 129          * in the free list and thus, the device cannot be removed.
 130          */
 131         if (list_empty(&resource->node)) {
 132                 error = -EBUSY;
 133                 dev_err(&mc_bus_dev->dev,
 134                         "Device %s cannot be removed from resource pool\n",
 135                         dev_name(&mc_dev->dev));
 136                 goto out_unlock;
 137         }
 138
 139         list_del_init(&resource->node);
 140         res_pool->free_count--;
 141         res_pool->max_count--;
 142
 143         devm_kfree(&mc_bus_dev->dev, resource);
 144         mc_dev->resource = NULL;
 145         error = 0;
 146 out_unlock:
 147         mutex_unlock(&res_pool->mutex);
 148 out:
 149         return error;
 150 }
 151
 152 static const char *const fsl_mc_pool_type_strings[] = {
 153         [FSL_MC_POOL_DPMCP] = "dpmcp",
 154         [FSL_MC_POOL_DPBP] = "dpbp",
 155         [FSL_MC_POOL_DPCON] = "dpcon",
 156         [FSL_MC_POOL_IRQ] = "irq",
 157 };
 158
 159 static int __must_check object_type_to_pool_type(const char *object_type,
 160                                                  enum fsl_mc_pool_type
 161                                                                 *pool_type)
 162 {
 163         unsigned int i;
 164
 165         for (i = 0; i < ARRAY_SIZE(fsl_mc_pool_type_strings); i++) {
 166                 if (strcmp(object_type, fsl_mc_pool_type_strings[i]) == 0) {
 167                         *pool_type = i;
 168                         return 0;
 169                 }
 170         }
 171
 172         return -EINVAL;
 173 }
 174
 175 int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
 176                                           enum fsl_mc_pool_type pool_type,
 177                                           struct fsl_mc_resource **new_resource)
 178 {
 179         struct fsl_mc_resource_pool *res_pool;
 180         struct fsl_mc_resource *resource;
 181         struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
 182         int error = -EINVAL;
 183
 184         BUILD_BUG_ON(ARRAY_SIZE(fsl_mc_pool_type_strings) !=
 185                      FSL_MC_NUM_POOL_TYPES);
 186
 187         *new_resource = NULL;
 188         if (pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES)
 189                 goto out;
 190
 191         res_pool = &mc_bus->resource_pools[pool_type];
 192         if (res_pool->mc_bus != mc_bus)
 193                 goto out;
 194
 195         mutex_lock(&res_pool->mutex);
 196         resource = list_first_entry_or_null(&res_pool->free_list,
 197                                             struct fsl_mc_resource, node);
 198
 199         if (!resource) {
 200                 error = -ENXIO;
 201                 dev_err(&mc_bus_dev->dev,
 202                         "No more resources of type %s left\n",
 203                         fsl_mc_pool_type_strings[pool_type]);
 204                 goto out_unlock;
 205         }
 206
 207         if (resource->type != pool_type)
 208                 goto out_unlock;
 209         if (resource->parent_pool != res_pool)
 210                 goto out_unlock;
 211         if (res_pool->free_count <= 0 ||
 212             res_pool->free_count > res_pool->max_count)
 213                 goto out_unlock;
 214
 215         list_del_init(&resource->node);
 216
 217         res_pool->free_count--;
 218         error = 0;
 219 out_unlock:
 220         mutex_unlock(&res_pool->mutex);
 221         *new_resource = resource;
 222 out:
 223         return error;
 224 }
 225 EXPORT_SYMBOL_GPL(fsl_mc_resource_allocate);
 226
 227 void fsl_mc_resource_free(struct fsl_mc_resource *resource)
 228 {
 229         struct fsl_mc_resource_pool *res_pool;
 230
 231         res_pool = resource->parent_pool;
 232         if (resource->type != res_pool->type)
 233                 return;
 234
 235         mutex_lock(&res_pool->mutex);
 236         if (res_pool->free_count < 0 ||
 237             res_pool->free_count >= res_pool->max_count)
 238                 goto out_unlock;
 239
 240         if (!list_empty(&resource->node))
 241                 goto out_unlock;
 242
 243         list_add_tail(&resource->node, &res_pool->free_list);
 244         res_pool->free_count++;
 245 out_unlock:
 246         mutex_unlock(&res_pool->mutex);
 247 }
 248 EXPORT_SYMBOL_GPL(fsl_mc_resource_free);
 249
 250 /**
 251  * fsl_mc_object_allocate - Allocates an fsl-mc object of the given
 252  * pool type from a given fsl-mc bus instance
 253  *
 254  * @mc_dev: fsl-mc device which is used in conjunction with the
 255  * allocated object
 256  * @pool_type: pool type
 257  * @new_mc_dev: pointer to area where the pointer to the allocated device
 258  * is to be returned
 259  *
 260  * Allocatable objects are always used in conjunction with some functional
 261  * device.  This function allocates an object of the specified type from
 262  * the DPRC containing the functional device.
 263  *
 264  * NOTE: pool_type must be different from FSL_MC_POOL_MCP, since MC
 265  * portals are allocated using fsl_mc_portal_allocate(), instead of
 266  * this function.
 267  */
 268 int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
 269                                         enum fsl_mc_pool_type pool_type,
 270                                         struct fsl_mc_device **new_mc_adev)
 271 {
 272         struct fsl_mc_device *mc_bus_dev;
 273         struct fsl_mc_bus *mc_bus;
 274         struct fsl_mc_device *mc_adev;
 275         int error = -EINVAL;
 276         struct fsl_mc_resource *resource = NULL;
 277
 278         *new_mc_adev = NULL;
 279         if (mc_dev->flags & FSL_MC_IS_DPRC)
 280                 goto error;
 281
 282         if (!dev_is_fsl_mc(mc_dev->dev.parent))
 283                 goto error;
 284
 285         if (pool_type == FSL_MC_POOL_DPMCP)
 286                 goto error;
 287
 288         mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
 289         mc_bus = to_fsl_mc_bus(mc_bus_dev);
 290         error = fsl_mc_resource_allocate(mc_bus, pool_type, &resource);
 291         if (error < 0)
 292                 goto error;
 293
 294         mc_adev = resource->data;
 295         if (!mc_adev)
 296                 goto error;
 297
 298         *new_mc_adev = mc_adev;
 299         return 0;
 300 error:
 301         if (resource)
 302                 fsl_mc_resource_free(resource);
 303
 304         return error;
 305 }
 306 EXPORT_SYMBOL_GPL(fsl_mc_object_allocate);
 307
 308 /**
 309  * fsl_mc_object_free - Returns an fsl-mc object to the resource
 310  * pool where it came from.
 311  * @mc_adev: Pointer to the fsl-mc device
 312  */
 313 void fsl_mc_object_free(struct fsl_mc_device *mc_adev)
 314 {
 315         struct fsl_mc_resource *resource;
 316
 317         resource = mc_adev->resource;
 318         if (resource->type == FSL_MC_POOL_DPMCP)
 319                 return;
 320         if (resource->data != mc_adev)
 321                 return;
 322
 323         fsl_mc_resource_free(resource);
 324 }
 325 EXPORT_SYMBOL_GPL(fsl_mc_object_free);
 326
 327 /*
 328  * A DPRC and the devices in the DPRC all share the same GIC-ITS device
 329  * ID.  A block of IRQs is pre-allocated and maintained in a pool
 330  * from which devices can allocate them when needed.
 331  */
 332
 333 /*
 334  * Initialize the interrupt pool associated with an fsl-mc bus.
 335  * It allocates a block of IRQs from the GIC-ITS.
 336  */
 337 int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
 338                              unsigned int irq_count)
 339 {
 340         unsigned int i;
 341         struct msi_desc *msi_desc;
 342         struct fsl_mc_device_irq *irq_resources;
 343         struct fsl_mc_device_irq *mc_dev_irq;
 344         int error;
 345         struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
 346         struct fsl_mc_resource_pool *res_pool =
 347                         &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
 348
 349         if (irq_count == 0 ||
 350             irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS)
 351                 return -EINVAL;
 352
 353         error = fsl_mc_msi_domain_alloc_irqs(&mc_bus_dev->dev, irq_count);
 354         if (error < 0)
 355                 return error;
 356
 357         irq_resources = devm_kcalloc(&mc_bus_dev->dev,
 358                                      irq_count, sizeof(*irq_resources),
 359                                      GFP_KERNEL);
 360         if (!irq_resources) {
 361                 error = -ENOMEM;
 362                 goto cleanup_msi_irqs;
 363         }
 364
 365         for (i = 0; i < irq_count; i++) {
 366                 mc_dev_irq = &irq_resources[i];
 367
 368                 /*
 369                  * NOTE: This mc_dev_irq's MSI addr/value pair will be set
 370                  * by the fsl_mc_msi_write_msg() callback
 371                  */
 372                 mc_dev_irq->resource.type = res_pool->type;
 373                 mc_dev_irq->resource.data = mc_dev_irq;
 374                 mc_dev_irq->resource.parent_pool = res_pool;
 375                 INIT_LIST_HEAD(&mc_dev_irq->resource.node);
 376                 list_add_tail(&mc_dev_irq->resource.node, &res_pool->free_list);
 377         }
 378
 379         for_each_msi_entry(msi_desc, &mc_bus_dev->dev) {
 380                 mc_dev_irq = &irq_resources[msi_desc->fsl_mc.msi_index];
 381                 mc_dev_irq->msi_desc = msi_desc;
 382                 mc_dev_irq->resource.id = msi_desc->irq;
 383         }
 384
 385         res_pool->max_count = irq_count;
 386         res_pool->free_count = irq_count;
 387         mc_bus->irq_resources = irq_resources;
 388         return 0;
 389
 390 cleanup_msi_irqs:
 391         fsl_mc_msi_domain_free_irqs(&mc_bus_dev->dev);
 392         return error;
 393 }
 394 EXPORT_SYMBOL_GPL(fsl_mc_populate_irq_pool);
 395
 396 /**
 397  * Teardown the interrupt pool associated with an fsl-mc bus.
 398  * It frees the IRQs that were allocated to the pool, back to the GIC-ITS.
 399  */
 400 void fsl_mc_cleanup_irq_pool(struct fsl_mc_bus *mc_bus)
 401 {
 402         struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
 403         struct fsl_mc_resource_pool *res_pool =
 404                         &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
 405
 406         if (!mc_bus->irq_resources)
 407                 return;
 408
 409         if (res_pool->max_count == 0)
 410                 return;
 411
 412         if (res_pool->free_count != res_pool->max_count)
 413                 return;
 414
 415         INIT_LIST_HEAD(&res_pool->free_list);
 416         res_pool->max_count = 0;
 417         res_pool->free_count = 0;
 418         mc_bus->irq_resources = NULL;
 419         fsl_mc_msi_domain_free_irqs(&mc_bus_dev->dev);
 420 }
 421 EXPORT_SYMBOL_GPL(fsl_mc_cleanup_irq_pool);
 422
 423 /**
 424  * Allocate the IRQs required by a given fsl-mc device.
 425  */
 426 int __must_check fsl_mc_allocate_irqs(struct fsl_mc_device *mc_dev)
 427 {
 428         int i;
 429         int irq_count;
 430         int res_allocated_count = 0;
 431         int error = -EINVAL;
 432         struct fsl_mc_device_irq **irqs = NULL;
 433         struct fsl_mc_bus *mc_bus;
 434         struct fsl_mc_resource_pool *res_pool;
 435
 436         if (mc_dev->irqs)
 437                 return -EINVAL;
 438
 439         irq_count = mc_dev->obj_desc.irq_count;
 440         if (irq_count == 0)
 441                 return -EINVAL;
 442
 443         if (is_fsl_mc_bus_dprc(mc_dev))
 444                 mc_bus = to_fsl_mc_bus(mc_dev);
 445         else
 446                 mc_bus = to_fsl_mc_bus(to_fsl_mc_device(mc_dev->dev.parent));
 447
 448         if (!mc_bus->irq_resources)
 449                 return -EINVAL;
 450
 451         res_pool = &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
 452         if (res_pool->free_count < irq_count) {
 453                 dev_err(&mc_dev->dev,
 454                         "Not able to allocate %u irqs for device\n", irq_count);
 455                 return -ENOSPC;
 456         }
 457
 458         irqs = devm_kcalloc(&mc_dev->dev, irq_count, sizeof(irqs[0]),
 459                             GFP_KERNEL);
 460         if (!irqs)
 461                 return -ENOMEM;
 462
 463         for (i = 0; i < irq_count; i++) {
 464                 struct fsl_mc_resource *resource;
 465
 466                 error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_IRQ,
 467                                                  &resource);
 468                 if (error < 0)
 469                         goto error_resource_alloc;
 470
 471                 irqs[i] = to_fsl_mc_irq(resource);
 472                 res_allocated_count++;
 473
 474                 irqs[i]->mc_dev = mc_dev;
 475                 irqs[i]->dev_irq_index = i;
 476         }
 477
 478         mc_dev->irqs = irqs;
 479         return 0;
 480
 481 error_resource_alloc:
 482         for (i = 0; i < res_allocated_count; i++) {
 483                 irqs[i]->mc_dev = NULL;
 484                 fsl_mc_resource_free(&irqs[i]->resource);
 485         }
 486
 487         return error;
 488 }
 489 EXPORT_SYMBOL_GPL(fsl_mc_allocate_irqs);
 490
 491 /*
 492  * Frees the IRQs that were allocated for an fsl-mc device.
 493  */
 494 void fsl_mc_free_irqs(struct fsl_mc_device *mc_dev)
 495 {
 496         int i;
 497         int irq_count;
 498         struct fsl_mc_bus *mc_bus;
 499         struct fsl_mc_device_irq **irqs = mc_dev->irqs;
 500
 501         if (!irqs)
 502                 return;
 503
 504         irq_count = mc_dev->obj_desc.irq_count;
 505
 506         if (is_fsl_mc_bus_dprc(mc_dev))
 507                 mc_bus = to_fsl_mc_bus(mc_dev);
 508         else
 509                 mc_bus = to_fsl_mc_bus(to_fsl_mc_device(mc_dev->dev.parent));
 510
 511         if (!mc_bus->irq_resources)
 512                 return;
 513
 514         for (i = 0; i < irq_count; i++) {
 515                 irqs[i]->mc_dev = NULL;
 516                 fsl_mc_resource_free(&irqs[i]->resource);
 517         }
 518
 519         mc_dev->irqs = NULL;
 520 }
 521 EXPORT_SYMBOL_GPL(fsl_mc_free_irqs);
 522
 523 void fsl_mc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev)
 524 {
 525         int pool_type;
 526         struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
 527
 528         for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++) {
 529                 struct fsl_mc_resource_pool *res_pool =
 530                     &mc_bus->resource_pools[pool_type];
 531
 532                 res_pool->type = pool_type;
 533                 res_pool->max_count = 0;
 534                 res_pool->free_count = 0;
 535                 res_pool->mc_bus = mc_bus;
 536                 INIT_LIST_HEAD(&res_pool->free_list);
 537                 mutex_init(&res_pool->mutex);
 538         }
 539 }
 540
 541 static void fsl_mc_cleanup_resource_pool(struct fsl_mc_device *mc_bus_dev,
 542                                          enum fsl_mc_pool_type pool_type)
 543 {
 544         struct fsl_mc_resource *resource;
 545         struct fsl_mc_resource *next;
 546         struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
 547         struct fsl_mc_resource_pool *res_pool =
 548                                         &mc_bus->resource_pools[pool_type];
 549         int free_count = 0;
 550
 551         list_for_each_entry_safe(resource, next, &res_pool->free_list, node) {
 552                 free_count++;
 553                 devm_kfree(&mc_bus_dev->dev, resource);
 554         }
 555 }
 556
 557 void fsl_mc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev)
 558 {
 559         int pool_type;
 560
 561         for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++)
 562                 fsl_mc_cleanup_resource_pool(mc_bus_dev, pool_type);
 563 }
 564
 565 /**
 566  * fsl_mc_allocator_probe - callback invoked when an allocatable device is
 567  * being added to the system
 568  */
 569 static int fsl_mc_allocator_probe(struct fsl_mc_device *mc_dev)
 570 {
 571         enum fsl_mc_pool_type pool_type;
 572         struct fsl_mc_device *mc_bus_dev;
 573         struct fsl_mc_bus *mc_bus;
 574         int error;
 575
 576         if (!fsl_mc_is_allocatable(mc_dev))
 577                 return -EINVAL;
 578
 579         mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
 580         if (!dev_is_fsl_mc(&mc_bus_dev->dev))
 581                 return -EINVAL;
 582
 583         mc_bus = to_fsl_mc_bus(mc_bus_dev);
 584         error = object_type_to_pool_type(mc_dev->obj_desc.type, &pool_type);
 585         if (error < 0)
 586                 return error;
 587
 588         error = fsl_mc_resource_pool_add_device(mc_bus, pool_type, mc_dev);
 589         if (error < 0)
 590                 return error;
 591
 592         dev_dbg(&mc_dev->dev,
 593                 "Allocatable fsl-mc device bound to fsl_mc_allocator driver");
 594         return 0;
 595 }
 596
 597 /**
 598  * fsl_mc_allocator_remove - callback invoked when an allocatable device is
 599  * being removed from the system
 600  */
 601 static int fsl_mc_allocator_remove(struct fsl_mc_device *mc_dev)
 602 {
 603         int error;
 604
 605         if (!fsl_mc_is_allocatable(mc_dev))
 606                 return -EINVAL;
 607
 608         if (mc_dev->resource) {
 609                 error = fsl_mc_resource_pool_remove_device(mc_dev);
 610                 if (error < 0)
 611                         return error;
 612         }
 613
 614         dev_dbg(&mc_dev->dev,
 615                 "Allocatable fsl-mc device unbound from fsl_mc_allocator driver");
 616         return 0;
 617 }
 618
 619 static const struct fsl_mc_device_id match_id_table[] = {
 620         {
 621          .vendor = FSL_MC_VENDOR_FREESCALE,
 622          .obj_type = "dpbp",
 623         },
 624         {
 625          .vendor = FSL_MC_VENDOR_FREESCALE,
 626          .obj_type = "dpmcp",
 627         },
 628         {
 629          .vendor = FSL_MC_VENDOR_FREESCALE,
 630          .obj_type = "dpcon",
 631         },
 632         {.vendor = 0x0},
 633 };
 634
 635 static struct fsl_mc_driver fsl_mc_allocator_driver = {
 636         .driver = {
 637                    .name = "fsl_mc_allocator",
 638                    .pm = NULL,
 639                    },
 640         .match_id_table = match_id_table,
 641         .probe = fsl_mc_allocator_probe,
 642         .remove = fsl_mc_allocator_remove,
 643 };
 644
 645 int __init fsl_mc_allocator_driver_init(void)
 646 {
 647         return fsl_mc_driver_register(&fsl_mc_allocator_driver);
 648 }
 649
 650 void fsl_mc_allocator_driver_exit(void)
 651 {
 652         fsl_mc_driver_unregister(&fsl_mc_allocator_driver);
 653 }