J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Freescale MC object device allocator driver |
| 3 | * |
| 4 | * Copyright (C) 2013 Freescale Semiconductor, Inc. |
| 5 | * |
| 6 | * This file is licensed under the terms of the GNU General Public |
| 7 | * License version 2. This program is licensed "as is" without any |
| 8 | * warranty of any kind, whether express or implied. |
| 9 | */ |
| 10 | |
| 11 | #include "../include/mc-private.h" |
| 12 | #include "../include/mc-sys.h" |
| 13 | #include <linux/module.h> |
| 14 | #include "../include/dpbp-cmd.h" |
| 15 | #include "../include/dpcon-cmd.h" |
| 16 | #include "dpmcp-cmd.h" |
| 17 | #include "dpmcp.h" |
| 18 | |
| 19 | /** |
| 20 | * fsl_mc_resource_pool_add_device - add allocatable device to a resource |
| 21 | * pool of a given MC bus |
| 22 | * |
| 23 | * @mc_bus: pointer to the MC bus |
| 24 | * @pool_type: MC bus pool type |
| 25 | * @mc_dev: Pointer to allocatable MC object device |
| 26 | * |
| 27 | * It adds an allocatable MC object device to a container's resource pool of |
| 28 | * the given resource type |
| 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 | bool mutex_locked = false; |
| 42 | |
| 43 | if (WARN_ON(pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES)) |
| 44 | goto out; |
| 45 | if (WARN_ON(!FSL_MC_IS_ALLOCATABLE(mc_dev->obj_desc.type))) |
| 46 | goto out; |
| 47 | if (WARN_ON(mc_dev->resource)) |
| 48 | goto out; |
| 49 | |
| 50 | res_pool = &mc_bus->resource_pools[pool_type]; |
| 51 | if (WARN_ON(res_pool->type != pool_type)) |
| 52 | goto out; |
| 53 | if (WARN_ON(res_pool->mc_bus != mc_bus)) |
| 54 | goto out; |
| 55 | |
| 56 | mutex_lock(&res_pool->mutex); |
| 57 | mutex_locked = true; |
| 58 | |
| 59 | if (WARN_ON(res_pool->max_count < 0)) |
| 60 | goto out; |
| 61 | if (WARN_ON(res_pool->free_count < 0 || |
| 62 | res_pool->free_count > res_pool->max_count)) |
| 63 | goto out; |
| 64 | |
| 65 | resource = devm_kzalloc(&mc_bus_dev->dev, sizeof(*resource), |
| 66 | GFP_KERNEL); |
| 67 | if (!resource) { |
| 68 | error = -ENOMEM; |
| 69 | dev_err(&mc_bus_dev->dev, |
| 70 | "Failed to allocate memory for fsl_mc_resource\n"); |
| 71 | goto out; |
| 72 | } |
| 73 | |
| 74 | resource->type = pool_type; |
| 75 | resource->id = mc_dev->obj_desc.id; |
| 76 | resource->data = mc_dev; |
| 77 | resource->parent_pool = res_pool; |
| 78 | INIT_LIST_HEAD(&resource->node); |
| 79 | list_add_tail(&resource->node, &res_pool->free_list); |
| 80 | mc_dev->resource = resource; |
| 81 | res_pool->free_count++; |
| 82 | res_pool->max_count++; |
| 83 | error = 0; |
| 84 | out: |
| 85 | if (mutex_locked) |
| 86 | mutex_unlock(&res_pool->mutex); |
| 87 | |
| 88 | return error; |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * fsl_mc_resource_pool_remove_device - remove an allocatable device from a |
| 93 | * resource pool |
| 94 | * |
| 95 | * @mc_dev: Pointer to allocatable MC object device |
| 96 | * |
| 97 | * It permanently removes an allocatable MC object device from the resource |
| 98 | * pool, the device is currently in, as long as it is in the pool's free list. |
| 99 | */ |
| 100 | static int __must_check fsl_mc_resource_pool_remove_device(struct fsl_mc_device |
| 101 | *mc_dev) |
| 102 | { |
| 103 | struct fsl_mc_device *mc_bus_dev; |
| 104 | struct fsl_mc_bus *mc_bus; |
| 105 | struct fsl_mc_resource_pool *res_pool; |
| 106 | struct fsl_mc_resource *resource; |
| 107 | int error = -EINVAL; |
| 108 | bool mutex_locked = false; |
| 109 | |
| 110 | if (WARN_ON(!FSL_MC_IS_ALLOCATABLE(mc_dev->obj_desc.type))) |
| 111 | goto out; |
| 112 | |
| 113 | resource = mc_dev->resource; |
J. German Rivera | 2379bdb | 2015-10-17 11:18:22 -0500 | [diff] [blame] | 114 | if (WARN_ON(!resource || resource->data != mc_dev)) |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 115 | goto out; |
| 116 | |
| 117 | mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent); |
| 118 | mc_bus = to_fsl_mc_bus(mc_bus_dev); |
| 119 | res_pool = resource->parent_pool; |
| 120 | if (WARN_ON(res_pool != &mc_bus->resource_pools[resource->type])) |
| 121 | goto out; |
| 122 | |
| 123 | mutex_lock(&res_pool->mutex); |
| 124 | mutex_locked = true; |
| 125 | |
| 126 | if (WARN_ON(res_pool->max_count <= 0)) |
| 127 | goto out; |
| 128 | if (WARN_ON(res_pool->free_count <= 0 || |
| 129 | res_pool->free_count > res_pool->max_count)) |
| 130 | goto out; |
| 131 | |
| 132 | /* |
| 133 | * If the device is currently allocated, its resource is not |
| 134 | * in the free list and thus, the device cannot be removed. |
| 135 | */ |
| 136 | if (list_empty(&resource->node)) { |
| 137 | error = -EBUSY; |
| 138 | dev_err(&mc_bus_dev->dev, |
| 139 | "Device %s cannot be removed from resource pool\n", |
| 140 | dev_name(&mc_dev->dev)); |
| 141 | goto out; |
| 142 | } |
| 143 | |
| 144 | list_del(&resource->node); |
| 145 | INIT_LIST_HEAD(&resource->node); |
| 146 | res_pool->free_count--; |
| 147 | res_pool->max_count--; |
| 148 | |
| 149 | devm_kfree(&mc_bus_dev->dev, resource); |
| 150 | mc_dev->resource = NULL; |
| 151 | error = 0; |
| 152 | out: |
| 153 | if (mutex_locked) |
| 154 | mutex_unlock(&res_pool->mutex); |
| 155 | |
| 156 | return error; |
| 157 | } |
| 158 | |
| 159 | static const char *const fsl_mc_pool_type_strings[] = { |
| 160 | [FSL_MC_POOL_DPMCP] = "dpmcp", |
| 161 | [FSL_MC_POOL_DPBP] = "dpbp", |
| 162 | [FSL_MC_POOL_DPCON] = "dpcon", |
| 163 | }; |
| 164 | |
| 165 | static int __must_check object_type_to_pool_type(const char *object_type, |
| 166 | enum fsl_mc_pool_type |
| 167 | *pool_type) |
| 168 | { |
| 169 | unsigned int i; |
| 170 | |
| 171 | for (i = 0; i < ARRAY_SIZE(fsl_mc_pool_type_strings); i++) { |
| 172 | if (strcmp(object_type, fsl_mc_pool_type_strings[i]) == 0) { |
| 173 | *pool_type = i; |
| 174 | return 0; |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | return -EINVAL; |
| 179 | } |
| 180 | |
| 181 | int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus, |
| 182 | enum fsl_mc_pool_type pool_type, |
| 183 | struct fsl_mc_resource **new_resource) |
| 184 | { |
| 185 | struct fsl_mc_resource_pool *res_pool; |
| 186 | struct fsl_mc_resource *resource; |
| 187 | struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev; |
| 188 | int error = -EINVAL; |
| 189 | bool mutex_locked = false; |
| 190 | |
| 191 | BUILD_BUG_ON(ARRAY_SIZE(fsl_mc_pool_type_strings) != |
| 192 | FSL_MC_NUM_POOL_TYPES); |
| 193 | |
| 194 | *new_resource = NULL; |
| 195 | if (WARN_ON(pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES)) |
| 196 | goto error; |
| 197 | |
| 198 | res_pool = &mc_bus->resource_pools[pool_type]; |
| 199 | if (WARN_ON(res_pool->mc_bus != mc_bus)) |
| 200 | goto error; |
| 201 | |
| 202 | mutex_lock(&res_pool->mutex); |
| 203 | mutex_locked = true; |
| 204 | resource = list_first_entry_or_null(&res_pool->free_list, |
| 205 | struct fsl_mc_resource, node); |
| 206 | |
| 207 | if (!resource) { |
| 208 | WARN_ON(res_pool->free_count != 0); |
| 209 | error = -ENXIO; |
| 210 | dev_err(&mc_bus_dev->dev, |
| 211 | "No more resources of type %s left\n", |
| 212 | fsl_mc_pool_type_strings[pool_type]); |
| 213 | goto error; |
| 214 | } |
| 215 | |
| 216 | if (WARN_ON(resource->type != pool_type)) |
| 217 | goto error; |
| 218 | if (WARN_ON(resource->parent_pool != res_pool)) |
| 219 | goto error; |
| 220 | if (WARN_ON(res_pool->free_count <= 0 || |
| 221 | res_pool->free_count > res_pool->max_count)) |
| 222 | goto error; |
| 223 | |
| 224 | list_del(&resource->node); |
| 225 | INIT_LIST_HEAD(&resource->node); |
| 226 | |
| 227 | res_pool->free_count--; |
| 228 | mutex_unlock(&res_pool->mutex); |
| 229 | *new_resource = resource; |
| 230 | return 0; |
| 231 | error: |
| 232 | if (mutex_locked) |
| 233 | mutex_unlock(&res_pool->mutex); |
| 234 | |
| 235 | return error; |
| 236 | } |
| 237 | EXPORT_SYMBOL_GPL(fsl_mc_resource_allocate); |
| 238 | |
| 239 | void fsl_mc_resource_free(struct fsl_mc_resource *resource) |
| 240 | { |
| 241 | struct fsl_mc_resource_pool *res_pool; |
| 242 | bool mutex_locked = false; |
| 243 | |
| 244 | res_pool = resource->parent_pool; |
| 245 | if (WARN_ON(resource->type != res_pool->type)) |
| 246 | goto out; |
| 247 | |
| 248 | mutex_lock(&res_pool->mutex); |
| 249 | mutex_locked = true; |
| 250 | if (WARN_ON(res_pool->free_count < 0 || |
| 251 | res_pool->free_count >= res_pool->max_count)) |
| 252 | goto out; |
| 253 | |
| 254 | if (WARN_ON(!list_empty(&resource->node))) |
| 255 | goto out; |
| 256 | |
| 257 | list_add_tail(&resource->node, &res_pool->free_list); |
| 258 | res_pool->free_count++; |
| 259 | out: |
| 260 | if (mutex_locked) |
| 261 | mutex_unlock(&res_pool->mutex); |
| 262 | } |
| 263 | EXPORT_SYMBOL_GPL(fsl_mc_resource_free); |
| 264 | |
| 265 | /** |
| 266 | * fsl_mc_portal_allocate - Allocates an MC portal |
| 267 | * |
| 268 | * @mc_dev: MC device for which the MC portal is to be allocated |
| 269 | * @mc_io_flags: Flags for the fsl_mc_io object that wraps the allocated |
| 270 | * MC portal. |
| 271 | * @new_mc_io: Pointer to area where the pointer to the fsl_mc_io object |
| 272 | * that wraps the allocated MC portal is to be returned |
| 273 | * |
| 274 | * This function allocates an MC portal from the device's parent DPRC, |
| 275 | * from the corresponding MC bus' pool of MC portals and wraps |
| 276 | * it in a new fsl_mc_io object. If 'mc_dev' is a DPRC itself, the |
| 277 | * portal is allocated from its own MC bus. |
| 278 | */ |
| 279 | int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev, |
J. German Rivera | ba72f25 | 2015-09-25 11:21:01 -0500 | [diff] [blame] | 280 | u16 mc_io_flags, |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 281 | struct fsl_mc_io **new_mc_io) |
| 282 | { |
| 283 | struct fsl_mc_device *mc_bus_dev; |
| 284 | struct fsl_mc_bus *mc_bus; |
| 285 | phys_addr_t mc_portal_phys_addr; |
| 286 | size_t mc_portal_size; |
J. German Rivera | 724e50f | 2015-10-17 11:18:13 -0500 | [diff] [blame] | 287 | struct fsl_mc_device *dpmcp_dev; |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 288 | int error = -EINVAL; |
| 289 | struct fsl_mc_resource *resource = NULL; |
| 290 | struct fsl_mc_io *mc_io = NULL; |
| 291 | |
| 292 | if (mc_dev->flags & FSL_MC_IS_DPRC) { |
| 293 | mc_bus_dev = mc_dev; |
| 294 | } else { |
| 295 | if (WARN_ON(mc_dev->dev.parent->bus != &fsl_mc_bus_type)) |
| 296 | return error; |
| 297 | |
| 298 | mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent); |
| 299 | } |
| 300 | |
| 301 | mc_bus = to_fsl_mc_bus(mc_bus_dev); |
| 302 | *new_mc_io = NULL; |
| 303 | error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_DPMCP, &resource); |
| 304 | if (error < 0) |
| 305 | return error; |
| 306 | |
J. German Rivera | 724e50f | 2015-10-17 11:18:13 -0500 | [diff] [blame] | 307 | dpmcp_dev = resource->data; |
| 308 | if (WARN_ON(!dpmcp_dev)) |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 309 | goto error_cleanup_resource; |
| 310 | |
J. German Rivera | 724e50f | 2015-10-17 11:18:13 -0500 | [diff] [blame] | 311 | if (WARN_ON(dpmcp_dev->obj_desc.region_count == 0)) |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 312 | goto error_cleanup_resource; |
| 313 | |
J. German Rivera | 724e50f | 2015-10-17 11:18:13 -0500 | [diff] [blame] | 314 | mc_portal_phys_addr = dpmcp_dev->regions[0].start; |
| 315 | mc_portal_size = dpmcp_dev->regions[0].end - |
| 316 | dpmcp_dev->regions[0].start + 1; |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 317 | |
| 318 | if (WARN_ON(mc_portal_size != mc_bus_dev->mc_io->portal_size)) |
| 319 | goto error_cleanup_resource; |
| 320 | |
| 321 | error = fsl_create_mc_io(&mc_bus_dev->dev, |
| 322 | mc_portal_phys_addr, |
J. German Rivera | ffcd52e | 2015-10-17 11:18:14 -0500 | [diff] [blame] | 323 | mc_portal_size, dpmcp_dev, |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 324 | mc_io_flags, &mc_io); |
| 325 | if (error < 0) |
| 326 | goto error_cleanup_resource; |
| 327 | |
| 328 | *new_mc_io = mc_io; |
| 329 | return 0; |
| 330 | |
| 331 | error_cleanup_resource: |
| 332 | fsl_mc_resource_free(resource); |
| 333 | return error; |
| 334 | } |
| 335 | EXPORT_SYMBOL_GPL(fsl_mc_portal_allocate); |
| 336 | |
| 337 | /** |
| 338 | * fsl_mc_portal_free - Returns an MC portal to the pool of free MC portals |
| 339 | * of a given MC bus |
| 340 | * |
| 341 | * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free |
| 342 | */ |
| 343 | void fsl_mc_portal_free(struct fsl_mc_io *mc_io) |
| 344 | { |
J. German Rivera | ffcd52e | 2015-10-17 11:18:14 -0500 | [diff] [blame] | 345 | struct fsl_mc_device *dpmcp_dev; |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 346 | struct fsl_mc_resource *resource; |
| 347 | |
J. German Rivera | ffcd52e | 2015-10-17 11:18:14 -0500 | [diff] [blame] | 348 | /* |
| 349 | * Every mc_io obtained by calling fsl_mc_portal_allocate() is supposed |
| 350 | * to have a DPMCP object associated with. |
| 351 | */ |
| 352 | dpmcp_dev = mc_io->dpmcp_dev; |
| 353 | if (WARN_ON(!dpmcp_dev)) |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 354 | return; |
J. German Rivera | ffcd52e | 2015-10-17 11:18:14 -0500 | [diff] [blame] | 355 | |
| 356 | resource = dpmcp_dev->resource; |
| 357 | if (WARN_ON(!resource || resource->type != FSL_MC_POOL_DPMCP)) |
| 358 | return; |
| 359 | |
| 360 | if (WARN_ON(resource->data != dpmcp_dev)) |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 361 | return; |
| 362 | |
| 363 | fsl_destroy_mc_io(mc_io); |
| 364 | fsl_mc_resource_free(resource); |
| 365 | } |
| 366 | EXPORT_SYMBOL_GPL(fsl_mc_portal_free); |
| 367 | |
| 368 | /** |
| 369 | * fsl_mc_portal_reset - Resets the dpmcp object for a given fsl_mc_io object |
| 370 | * |
| 371 | * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free |
| 372 | */ |
| 373 | int fsl_mc_portal_reset(struct fsl_mc_io *mc_io) |
| 374 | { |
| 375 | int error; |
J. German Rivera | ffcd52e | 2015-10-17 11:18:14 -0500 | [diff] [blame] | 376 | struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev; |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 377 | |
J. German Rivera | ffcd52e | 2015-10-17 11:18:14 -0500 | [diff] [blame] | 378 | if (WARN_ON(!dpmcp_dev)) |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 379 | return -EINVAL; |
| 380 | |
J. German Rivera | d2f8499 | 2015-10-17 11:18:15 -0500 | [diff] [blame] | 381 | error = dpmcp_reset(mc_io, 0, dpmcp_dev->mc_handle); |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 382 | if (error < 0) { |
J. German Rivera | ffcd52e | 2015-10-17 11:18:14 -0500 | [diff] [blame] | 383 | dev_err(&dpmcp_dev->dev, "dpmcp_reset() failed: %d\n", error); |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 384 | return error; |
| 385 | } |
| 386 | |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 387 | return 0; |
| 388 | } |
| 389 | EXPORT_SYMBOL_GPL(fsl_mc_portal_reset); |
| 390 | |
| 391 | /** |
| 392 | * fsl_mc_object_allocate - Allocates a MC object device of the given |
| 393 | * pool type from a given MC bus |
| 394 | * |
| 395 | * @mc_dev: MC device for which the MC object device is to be allocated |
| 396 | * @pool_type: MC bus resource pool type |
| 397 | * @new_mc_dev: Pointer to area where the pointer to the allocated |
| 398 | * MC object device is to be returned |
| 399 | * |
| 400 | * This function allocates a MC object device from the device's parent DPRC, |
| 401 | * from the corresponding MC bus' pool of allocatable MC object devices of |
| 402 | * the given resource type. mc_dev cannot be a DPRC itself. |
| 403 | * |
| 404 | * NOTE: pool_type must be different from FSL_MC_POOL_MCP, since MC |
| 405 | * portals are allocated using fsl_mc_portal_allocate(), instead of |
| 406 | * this function. |
| 407 | */ |
| 408 | int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev, |
| 409 | enum fsl_mc_pool_type pool_type, |
| 410 | struct fsl_mc_device **new_mc_adev) |
| 411 | { |
| 412 | struct fsl_mc_device *mc_bus_dev; |
| 413 | struct fsl_mc_bus *mc_bus; |
| 414 | struct fsl_mc_device *mc_adev; |
| 415 | int error = -EINVAL; |
| 416 | struct fsl_mc_resource *resource = NULL; |
| 417 | |
| 418 | *new_mc_adev = NULL; |
| 419 | if (WARN_ON(mc_dev->flags & FSL_MC_IS_DPRC)) |
| 420 | goto error; |
| 421 | |
| 422 | if (WARN_ON(mc_dev->dev.parent->bus != &fsl_mc_bus_type)) |
| 423 | goto error; |
| 424 | |
| 425 | if (WARN_ON(pool_type == FSL_MC_POOL_DPMCP)) |
| 426 | goto error; |
| 427 | |
| 428 | mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent); |
| 429 | mc_bus = to_fsl_mc_bus(mc_bus_dev); |
| 430 | error = fsl_mc_resource_allocate(mc_bus, pool_type, &resource); |
| 431 | if (error < 0) |
| 432 | goto error; |
| 433 | |
| 434 | mc_adev = resource->data; |
| 435 | if (WARN_ON(!mc_adev)) |
| 436 | goto error; |
| 437 | |
| 438 | *new_mc_adev = mc_adev; |
| 439 | return 0; |
| 440 | error: |
| 441 | if (resource) |
| 442 | fsl_mc_resource_free(resource); |
| 443 | |
| 444 | return error; |
| 445 | } |
| 446 | EXPORT_SYMBOL_GPL(fsl_mc_object_allocate); |
| 447 | |
| 448 | /** |
| 449 | * fsl_mc_object_free - Returns an allocatable MC object device to the |
| 450 | * corresponding resource pool of a given MC bus. |
| 451 | * |
| 452 | * @mc_adev: Pointer to the MC object device |
| 453 | */ |
| 454 | void fsl_mc_object_free(struct fsl_mc_device *mc_adev) |
| 455 | { |
| 456 | struct fsl_mc_resource *resource; |
| 457 | |
| 458 | resource = mc_adev->resource; |
| 459 | if (WARN_ON(resource->type == FSL_MC_POOL_DPMCP)) |
| 460 | return; |
| 461 | if (WARN_ON(resource->data != mc_adev)) |
| 462 | return; |
| 463 | |
| 464 | fsl_mc_resource_free(resource); |
| 465 | } |
| 466 | EXPORT_SYMBOL_GPL(fsl_mc_object_free); |
| 467 | |
| 468 | /** |
| 469 | * fsl_mc_allocator_probe - callback invoked when an allocatable device is |
| 470 | * being added to the system |
| 471 | */ |
| 472 | static int fsl_mc_allocator_probe(struct fsl_mc_device *mc_dev) |
| 473 | { |
| 474 | enum fsl_mc_pool_type pool_type; |
| 475 | struct fsl_mc_device *mc_bus_dev; |
| 476 | struct fsl_mc_bus *mc_bus; |
J. German Rivera | 09a38ab | 2015-10-17 11:18:21 -0500 | [diff] [blame] | 477 | int error; |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 478 | |
| 479 | if (WARN_ON(!FSL_MC_IS_ALLOCATABLE(mc_dev->obj_desc.type))) |
J. German Rivera | 09a38ab | 2015-10-17 11:18:21 -0500 | [diff] [blame] | 480 | return -EINVAL; |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 481 | |
| 482 | mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent); |
| 483 | if (WARN_ON(mc_bus_dev->dev.bus != &fsl_mc_bus_type)) |
J. German Rivera | 09a38ab | 2015-10-17 11:18:21 -0500 | [diff] [blame] | 484 | return -EINVAL; |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 485 | |
| 486 | mc_bus = to_fsl_mc_bus(mc_bus_dev); |
| 487 | error = object_type_to_pool_type(mc_dev->obj_desc.type, &pool_type); |
| 488 | if (error < 0) |
J. German Rivera | 09a38ab | 2015-10-17 11:18:21 -0500 | [diff] [blame] | 489 | return error; |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 490 | |
| 491 | error = fsl_mc_resource_pool_add_device(mc_bus, pool_type, mc_dev); |
| 492 | if (error < 0) |
J. German Rivera | 09a38ab | 2015-10-17 11:18:21 -0500 | [diff] [blame] | 493 | return error; |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 494 | |
J. German Rivera | 6998d6b | 2015-10-17 11:18:16 -0500 | [diff] [blame] | 495 | dev_dbg(&mc_dev->dev, |
| 496 | "Allocatable MC object device bound to fsl_mc_allocator driver"); |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 497 | return 0; |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 498 | } |
| 499 | |
| 500 | /** |
| 501 | * fsl_mc_allocator_remove - callback invoked when an allocatable device is |
| 502 | * being removed from the system |
| 503 | */ |
| 504 | static int fsl_mc_allocator_remove(struct fsl_mc_device *mc_dev) |
| 505 | { |
J. German Rivera | 09a38ab | 2015-10-17 11:18:21 -0500 | [diff] [blame] | 506 | int error; |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 507 | |
| 508 | if (WARN_ON(!FSL_MC_IS_ALLOCATABLE(mc_dev->obj_desc.type))) |
J. German Rivera | 09a38ab | 2015-10-17 11:18:21 -0500 | [diff] [blame] | 509 | return -EINVAL; |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 510 | |
J. German Rivera | 6958cd4 | 2015-10-17 11:18:20 -0500 | [diff] [blame] | 511 | if (mc_dev->resource) { |
| 512 | error = fsl_mc_resource_pool_remove_device(mc_dev); |
| 513 | if (error < 0) |
J. German Rivera | 09a38ab | 2015-10-17 11:18:21 -0500 | [diff] [blame] | 514 | return error; |
J. German Rivera | 6958cd4 | 2015-10-17 11:18:20 -0500 | [diff] [blame] | 515 | } |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 516 | |
J. German Rivera | 6998d6b | 2015-10-17 11:18:16 -0500 | [diff] [blame] | 517 | dev_dbg(&mc_dev->dev, |
| 518 | "Allocatable MC object device unbound from fsl_mc_allocator driver"); |
J. German Rivera | 09a38ab | 2015-10-17 11:18:21 -0500 | [diff] [blame] | 519 | return 0; |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 520 | } |
| 521 | |
| 522 | static const struct fsl_mc_device_match_id match_id_table[] = { |
| 523 | { |
| 524 | .vendor = FSL_MC_VENDOR_FREESCALE, |
| 525 | .obj_type = "dpbp", |
| 526 | .ver_major = DPBP_VER_MAJOR, |
| 527 | .ver_minor = DPBP_VER_MINOR |
| 528 | }, |
| 529 | { |
| 530 | .vendor = FSL_MC_VENDOR_FREESCALE, |
| 531 | .obj_type = "dpmcp", |
| 532 | .ver_major = DPMCP_VER_MAJOR, |
| 533 | .ver_minor = DPMCP_VER_MINOR |
| 534 | }, |
| 535 | { |
| 536 | .vendor = FSL_MC_VENDOR_FREESCALE, |
| 537 | .obj_type = "dpcon", |
| 538 | .ver_major = DPCON_VER_MAJOR, |
| 539 | .ver_minor = DPCON_VER_MINOR |
| 540 | }, |
| 541 | {.vendor = 0x0}, |
| 542 | }; |
| 543 | |
| 544 | static struct fsl_mc_driver fsl_mc_allocator_driver = { |
| 545 | .driver = { |
| 546 | .name = "fsl_mc_allocator", |
| 547 | .owner = THIS_MODULE, |
| 548 | .pm = NULL, |
| 549 | }, |
| 550 | .match_id_table = match_id_table, |
| 551 | .probe = fsl_mc_allocator_probe, |
| 552 | .remove = fsl_mc_allocator_remove, |
| 553 | }; |
| 554 | |
J. German Rivera | e91ffa9 | 2015-03-27 16:01:08 -0500 | [diff] [blame] | 555 | int __init fsl_mc_allocator_driver_init(void) |
| 556 | { |
| 557 | return fsl_mc_driver_register(&fsl_mc_allocator_driver); |
| 558 | } |
J. German Rivera | 197f4d6 | 2015-03-05 19:35:25 -0600 | [diff] [blame] | 559 | |
J. German Rivera | e91ffa9 | 2015-03-27 16:01:08 -0500 | [diff] [blame] | 560 | void __exit fsl_mc_allocator_driver_exit(void) |
| 561 | { |
| 562 | fsl_mc_driver_unregister(&fsl_mc_allocator_driver); |
| 563 | } |