Kamal Agrawal | 8f0fb82 | 2020-08-19 10:25:15 +0530 | [diff] [blame] | 1 | /* Copyright (c) 2008-2020, The Linux Foundation. All rights reserved. |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | */ |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/fb.h> |
| 15 | #include <linux/file.h> |
| 16 | #include <linux/fs.h> |
| 17 | #include <linux/fdtable.h> |
| 18 | #include <linux/list.h> |
| 19 | #include <linux/debugfs.h> |
| 20 | #include <linux/uaccess.h> |
| 21 | #include <linux/interrupt.h> |
| 22 | #include <linux/workqueue.h> |
| 23 | #include <linux/dma-buf.h> |
| 24 | #include <linux/pm_runtime.h> |
| 25 | #include <linux/rbtree.h> |
| 26 | #include <linux/major.h> |
| 27 | #include <linux/io.h> |
| 28 | #include <linux/mman.h> |
| 29 | #include <linux/sort.h> |
| 30 | #include <linux/security.h> |
| 31 | #include <linux/compat.h> |
| 32 | #include <linux/ctype.h> |
| 33 | #include <linux/mm.h> |
| 34 | #include <asm/cacheflush.h> |
| 35 | |
| 36 | #include "kgsl.h" |
| 37 | #include "kgsl_debugfs.h" |
| 38 | #include "kgsl_log.h" |
| 39 | #include "kgsl_sharedmem.h" |
| 40 | #include "kgsl_drawobj.h" |
| 41 | #include "kgsl_device.h" |
| 42 | #include "kgsl_trace.h" |
| 43 | #include "kgsl_sync.h" |
| 44 | #include "kgsl_compat.h" |
| 45 | #include "kgsl_pool.h" |
| 46 | |
| 47 | #undef MODULE_PARAM_PREFIX |
| 48 | #define MODULE_PARAM_PREFIX "kgsl." |
| 49 | |
| 50 | #ifndef arch_mmap_check |
| 51 | #define arch_mmap_check(addr, len, flags) (0) |
| 52 | #endif |
| 53 | |
| 54 | #ifndef pgprot_writebackcache |
| 55 | #define pgprot_writebackcache(_prot) (_prot) |
| 56 | #endif |
| 57 | |
| 58 | #ifndef pgprot_writethroughcache |
| 59 | #define pgprot_writethroughcache(_prot) (_prot) |
| 60 | #endif |
| 61 | |
| 62 | #ifdef CONFIG_ARM_LPAE |
| 63 | #define KGSL_DMA_BIT_MASK DMA_BIT_MASK(64) |
| 64 | #else |
| 65 | #define KGSL_DMA_BIT_MASK DMA_BIT_MASK(32) |
| 66 | #endif |
| 67 | |
| 68 | static char *kgsl_mmu_type; |
| 69 | module_param_named(mmutype, kgsl_mmu_type, charp, 0000); |
| 70 | MODULE_PARM_DESC(kgsl_mmu_type, "Type of MMU to be used for graphics"); |
| 71 | |
| 72 | /* Mutex used for the IOMMU sync quirk */ |
| 73 | DEFINE_MUTEX(kgsl_mmu_sync); |
| 74 | EXPORT_SYMBOL(kgsl_mmu_sync); |
| 75 | |
| 76 | struct kgsl_dma_buf_meta { |
| 77 | struct dma_buf_attachment *attach; |
| 78 | struct dma_buf *dmabuf; |
| 79 | struct sg_table *table; |
| 80 | }; |
| 81 | |
| 82 | static inline struct kgsl_pagetable *_get_memdesc_pagetable( |
| 83 | struct kgsl_pagetable *pt, struct kgsl_mem_entry *entry) |
| 84 | { |
| 85 | /* if a secured buffer, map it to secure global pagetable */ |
| 86 | if (kgsl_memdesc_is_secured(&entry->memdesc)) |
| 87 | return pt->mmu->securepagetable; |
| 88 | |
| 89 | return pt; |
| 90 | } |
| 91 | |
| 92 | static void kgsl_mem_entry_detach_process(struct kgsl_mem_entry *entry); |
| 93 | |
| 94 | static const struct file_operations kgsl_fops; |
| 95 | |
| 96 | /* |
| 97 | * The memfree list contains the last N blocks of memory that have been freed. |
| 98 | * On a GPU fault we walk the list to see if the faulting address had been |
| 99 | * recently freed and print out a message to that effect |
| 100 | */ |
| 101 | |
| 102 | #define MEMFREE_ENTRIES 512 |
| 103 | |
| 104 | static DEFINE_SPINLOCK(memfree_lock); |
| 105 | |
| 106 | struct memfree_entry { |
| 107 | pid_t ptname; |
| 108 | uint64_t gpuaddr; |
| 109 | uint64_t size; |
| 110 | pid_t pid; |
| 111 | uint64_t flags; |
| 112 | }; |
| 113 | |
| 114 | static struct { |
| 115 | struct memfree_entry *list; |
| 116 | int head; |
| 117 | int tail; |
| 118 | } memfree; |
| 119 | |
| 120 | static int kgsl_memfree_init(void) |
| 121 | { |
| 122 | memfree.list = kcalloc(MEMFREE_ENTRIES, sizeof(struct memfree_entry), |
| 123 | GFP_KERNEL); |
| 124 | |
| 125 | return (memfree.list) ? 0 : -ENOMEM; |
| 126 | } |
| 127 | |
| 128 | static void kgsl_memfree_exit(void) |
| 129 | { |
| 130 | kfree(memfree.list); |
| 131 | memset(&memfree, 0, sizeof(memfree)); |
| 132 | } |
| 133 | |
| 134 | static inline bool match_memfree_addr(struct memfree_entry *entry, |
| 135 | pid_t ptname, uint64_t gpuaddr) |
| 136 | { |
| 137 | return ((entry->ptname == ptname) && |
| 138 | (entry->size > 0) && |
| 139 | (gpuaddr >= entry->gpuaddr && |
| 140 | gpuaddr < (entry->gpuaddr + entry->size))); |
| 141 | } |
| 142 | int kgsl_memfree_find_entry(pid_t ptname, uint64_t *gpuaddr, |
| 143 | uint64_t *size, uint64_t *flags, pid_t *pid) |
| 144 | { |
| 145 | int ptr; |
| 146 | |
| 147 | if (memfree.list == NULL) |
| 148 | return 0; |
| 149 | |
| 150 | spin_lock(&memfree_lock); |
| 151 | |
| 152 | ptr = memfree.head - 1; |
| 153 | if (ptr < 0) |
| 154 | ptr = MEMFREE_ENTRIES - 1; |
| 155 | |
| 156 | /* Walk backwards through the list looking for the last match */ |
| 157 | while (ptr != memfree.tail) { |
| 158 | struct memfree_entry *entry = &memfree.list[ptr]; |
| 159 | |
| 160 | if (match_memfree_addr(entry, ptname, *gpuaddr)) { |
| 161 | *gpuaddr = entry->gpuaddr; |
| 162 | *flags = entry->flags; |
| 163 | *size = entry->size; |
| 164 | *pid = entry->pid; |
| 165 | |
| 166 | spin_unlock(&memfree_lock); |
| 167 | return 1; |
| 168 | } |
| 169 | |
| 170 | ptr = ptr - 1; |
| 171 | |
| 172 | if (ptr < 0) |
| 173 | ptr = MEMFREE_ENTRIES - 1; |
| 174 | } |
| 175 | |
| 176 | spin_unlock(&memfree_lock); |
| 177 | return 0; |
| 178 | } |
| 179 | |
| 180 | static void kgsl_memfree_purge(struct kgsl_pagetable *pagetable, |
| 181 | uint64_t gpuaddr, uint64_t size) |
| 182 | { |
| 183 | pid_t ptname = pagetable ? pagetable->name : 0; |
| 184 | int i; |
| 185 | |
| 186 | if (memfree.list == NULL) |
| 187 | return; |
| 188 | |
| 189 | spin_lock(&memfree_lock); |
| 190 | |
| 191 | for (i = 0; i < MEMFREE_ENTRIES; i++) { |
| 192 | struct memfree_entry *entry = &memfree.list[i]; |
| 193 | |
| 194 | if (entry->ptname != ptname || entry->size == 0) |
| 195 | continue; |
| 196 | |
| 197 | if (gpuaddr > entry->gpuaddr && |
| 198 | gpuaddr < entry->gpuaddr + entry->size) { |
| 199 | /* truncate the end of the entry */ |
| 200 | entry->size = gpuaddr - entry->gpuaddr; |
| 201 | } else if (gpuaddr <= entry->gpuaddr) { |
| 202 | if (gpuaddr + size > entry->gpuaddr && |
| 203 | gpuaddr + size < entry->gpuaddr + entry->size) |
| 204 | /* Truncate the beginning of the entry */ |
| 205 | entry->gpuaddr = gpuaddr + size; |
| 206 | else if (gpuaddr + size >= entry->gpuaddr + entry->size) |
| 207 | /* Remove the entire entry */ |
| 208 | entry->size = 0; |
| 209 | } |
| 210 | } |
| 211 | spin_unlock(&memfree_lock); |
| 212 | } |
| 213 | |
| 214 | static void kgsl_memfree_add(pid_t pid, pid_t ptname, uint64_t gpuaddr, |
| 215 | uint64_t size, uint64_t flags) |
| 216 | |
| 217 | { |
| 218 | struct memfree_entry *entry; |
| 219 | |
| 220 | if (memfree.list == NULL) |
| 221 | return; |
| 222 | |
| 223 | spin_lock(&memfree_lock); |
| 224 | |
| 225 | entry = &memfree.list[memfree.head]; |
| 226 | |
| 227 | entry->pid = pid; |
| 228 | entry->ptname = ptname; |
| 229 | entry->gpuaddr = gpuaddr; |
| 230 | entry->size = size; |
| 231 | entry->flags = flags; |
| 232 | |
| 233 | memfree.head = (memfree.head + 1) % MEMFREE_ENTRIES; |
| 234 | |
| 235 | if (memfree.head == memfree.tail) |
| 236 | memfree.tail = (memfree.tail + 1) % MEMFREE_ENTRIES; |
| 237 | |
| 238 | spin_unlock(&memfree_lock); |
| 239 | } |
| 240 | |
| 241 | int kgsl_readtimestamp(struct kgsl_device *device, void *priv, |
| 242 | enum kgsl_timestamp_type type, unsigned int *timestamp) |
| 243 | { |
| 244 | return device->ftbl->readtimestamp(device, priv, type, timestamp); |
| 245 | } |
| 246 | EXPORT_SYMBOL(kgsl_readtimestamp); |
| 247 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 248 | /* Scheduled by kgsl_mem_entry_put_deferred() */ |
| 249 | static void _deferred_put(struct work_struct *work) |
| 250 | { |
| 251 | struct kgsl_mem_entry *entry = |
| 252 | container_of(work, struct kgsl_mem_entry, work); |
| 253 | |
| 254 | kgsl_mem_entry_put(entry); |
| 255 | } |
| 256 | |
| 257 | static inline struct kgsl_mem_entry * |
| 258 | kgsl_mem_entry_create(void) |
| 259 | { |
| 260 | struct kgsl_mem_entry *entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
| 261 | |
Tarun Karra | 24d3fe1 | 2017-04-05 15:23:03 -0700 | [diff] [blame] | 262 | if (entry != NULL) { |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 263 | kref_init(&entry->refcount); |
Tarun Karra | 24d3fe1 | 2017-04-05 15:23:03 -0700 | [diff] [blame] | 264 | /* put this ref in userspace memory alloc and map ioctls */ |
| 265 | kref_get(&entry->refcount); |
| 266 | } |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 267 | |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 268 | atomic_set(&entry->map_count, 0); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 269 | return entry; |
| 270 | } |
| 271 | #ifdef CONFIG_DMA_SHARED_BUFFER |
| 272 | static void kgsl_destroy_ion(struct kgsl_dma_buf_meta *meta) |
| 273 | { |
| 274 | if (meta != NULL) { |
| 275 | dma_buf_unmap_attachment(meta->attach, meta->table, |
| 276 | DMA_FROM_DEVICE); |
| 277 | dma_buf_detach(meta->dmabuf, meta->attach); |
| 278 | dma_buf_put(meta->dmabuf); |
| 279 | kfree(meta); |
| 280 | } |
| 281 | } |
| 282 | #else |
| 283 | static void kgsl_destroy_ion(struct kgsl_dma_buf_meta *meta) |
| 284 | { |
| 285 | |
| 286 | } |
| 287 | #endif |
| 288 | |
| 289 | void |
| 290 | kgsl_mem_entry_destroy(struct kref *kref) |
| 291 | { |
| 292 | struct kgsl_mem_entry *entry = container_of(kref, |
| 293 | struct kgsl_mem_entry, |
| 294 | refcount); |
| 295 | unsigned int memtype; |
| 296 | |
| 297 | if (entry == NULL) |
| 298 | return; |
| 299 | |
| 300 | /* pull out the memtype before the flags get cleared */ |
| 301 | memtype = kgsl_memdesc_usermem_type(&entry->memdesc); |
| 302 | |
| 303 | /* Detach from process list */ |
| 304 | kgsl_mem_entry_detach_process(entry); |
| 305 | |
| 306 | if (memtype != KGSL_MEM_ENTRY_KERNEL) |
| 307 | atomic_long_sub(entry->memdesc.size, |
| 308 | &kgsl_driver.stats.mapped); |
| 309 | |
| 310 | /* |
| 311 | * Ion takes care of freeing the sg_table for us so |
| 312 | * clear the sg table before freeing the sharedmem |
| 313 | * so kgsl_sharedmem_free doesn't try to free it again |
| 314 | */ |
| 315 | if (memtype == KGSL_MEM_ENTRY_ION) |
| 316 | entry->memdesc.sgt = NULL; |
| 317 | |
| 318 | if ((memtype == KGSL_MEM_ENTRY_USER) |
| 319 | && !(entry->memdesc.flags & KGSL_MEMFLAGS_GPUREADONLY)) { |
| 320 | int i = 0, j; |
| 321 | struct scatterlist *sg; |
| 322 | struct page *page; |
| 323 | /* |
| 324 | * Mark all of pages in the scatterlist as dirty since they |
| 325 | * were writable by the GPU. |
| 326 | */ |
| 327 | for_each_sg(entry->memdesc.sgt->sgl, sg, |
| 328 | entry->memdesc.sgt->nents, i) { |
| 329 | page = sg_page(sg); |
| 330 | for (j = 0; j < (sg->length >> PAGE_SHIFT); j++) |
Rajesh Kemisetti | f7a4df1 | 2019-04-30 19:04:30 +0530 | [diff] [blame] | 331 | set_page_dirty_lock(nth_page(page, j)); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 332 | } |
| 333 | } |
| 334 | |
| 335 | kgsl_sharedmem_free(&entry->memdesc); |
| 336 | |
| 337 | switch (memtype) { |
| 338 | case KGSL_MEM_ENTRY_ION: |
| 339 | kgsl_destroy_ion(entry->priv_data); |
| 340 | break; |
| 341 | default: |
| 342 | break; |
| 343 | } |
| 344 | |
| 345 | kfree(entry); |
| 346 | } |
| 347 | EXPORT_SYMBOL(kgsl_mem_entry_destroy); |
| 348 | |
| 349 | /* Allocate a IOVA for memory objects that don't use SVM */ |
| 350 | static int kgsl_mem_entry_track_gpuaddr(struct kgsl_device *device, |
| 351 | struct kgsl_process_private *process, |
| 352 | struct kgsl_mem_entry *entry) |
| 353 | { |
| 354 | struct kgsl_pagetable *pagetable; |
| 355 | |
| 356 | /* |
| 357 | * If SVM is enabled for this object then the address needs to be |
| 358 | * assigned elsewhere |
| 359 | * Also do not proceed further in case of NoMMU. |
| 360 | */ |
| 361 | if (kgsl_memdesc_use_cpu_map(&entry->memdesc) || |
| 362 | (kgsl_mmu_get_mmutype(device) == KGSL_MMU_TYPE_NONE)) |
| 363 | return 0; |
| 364 | |
| 365 | pagetable = kgsl_memdesc_is_secured(&entry->memdesc) ? |
| 366 | device->mmu.securepagetable : process->pagetable; |
| 367 | |
| 368 | return kgsl_mmu_get_gpuaddr(pagetable, &entry->memdesc); |
| 369 | } |
| 370 | |
| 371 | /* Commit the entry to the process so it can be accessed by other operations */ |
| 372 | static void kgsl_mem_entry_commit_process(struct kgsl_mem_entry *entry) |
| 373 | { |
| 374 | if (!entry) |
| 375 | return; |
| 376 | |
| 377 | spin_lock(&entry->priv->mem_lock); |
| 378 | idr_replace(&entry->priv->mem_idr, entry, entry->id); |
| 379 | spin_unlock(&entry->priv->mem_lock); |
| 380 | } |
| 381 | |
| 382 | /* |
| 383 | * Attach the memory object to a process by (possibly) getting a GPU address and |
| 384 | * (possibly) mapping it |
| 385 | */ |
| 386 | static int kgsl_mem_entry_attach_process(struct kgsl_device *device, |
| 387 | struct kgsl_process_private *process, |
| 388 | struct kgsl_mem_entry *entry) |
| 389 | { |
| 390 | int id, ret; |
| 391 | |
| 392 | ret = kgsl_process_private_get(process); |
| 393 | if (!ret) |
| 394 | return -EBADF; |
| 395 | |
| 396 | ret = kgsl_mem_entry_track_gpuaddr(device, process, entry); |
| 397 | if (ret) { |
| 398 | kgsl_process_private_put(process); |
| 399 | return ret; |
| 400 | } |
| 401 | |
| 402 | idr_preload(GFP_KERNEL); |
| 403 | spin_lock(&process->mem_lock); |
| 404 | /* Allocate the ID but don't attach the pointer just yet */ |
| 405 | id = idr_alloc(&process->mem_idr, NULL, 1, 0, GFP_NOWAIT); |
| 406 | spin_unlock(&process->mem_lock); |
| 407 | idr_preload_end(); |
| 408 | |
| 409 | if (id < 0) { |
| 410 | if (!kgsl_memdesc_use_cpu_map(&entry->memdesc)) |
| 411 | kgsl_mmu_put_gpuaddr(&entry->memdesc); |
| 412 | kgsl_process_private_put(process); |
| 413 | return id; |
| 414 | } |
| 415 | |
| 416 | entry->id = id; |
| 417 | entry->priv = process; |
| 418 | |
| 419 | /* |
| 420 | * Map the memory if a GPU address is already assigned, either through |
| 421 | * kgsl_mem_entry_track_gpuaddr() or via some other SVM process |
| 422 | */ |
| 423 | if (entry->memdesc.gpuaddr) { |
| 424 | if (entry->memdesc.flags & KGSL_MEMFLAGS_SPARSE_VIRT) |
| 425 | ret = kgsl_mmu_sparse_dummy_map( |
| 426 | entry->memdesc.pagetable, |
| 427 | &entry->memdesc, 0, |
| 428 | entry->memdesc.size); |
| 429 | else if (entry->memdesc.gpuaddr) |
| 430 | ret = kgsl_mmu_map(entry->memdesc.pagetable, |
| 431 | &entry->memdesc); |
| 432 | |
| 433 | if (ret) |
| 434 | kgsl_mem_entry_detach_process(entry); |
| 435 | } |
| 436 | |
| 437 | kgsl_memfree_purge(entry->memdesc.pagetable, entry->memdesc.gpuaddr, |
| 438 | entry->memdesc.size); |
| 439 | |
| 440 | return ret; |
| 441 | } |
| 442 | |
| 443 | /* Detach a memory entry from a process and unmap it from the MMU */ |
| 444 | static void kgsl_mem_entry_detach_process(struct kgsl_mem_entry *entry) |
| 445 | { |
| 446 | unsigned int type; |
| 447 | |
| 448 | if (entry == NULL) |
| 449 | return; |
| 450 | |
| 451 | /* |
| 452 | * First remove the entry from mem_idr list |
| 453 | * so that no one can operate on obsolete values |
| 454 | */ |
| 455 | spin_lock(&entry->priv->mem_lock); |
| 456 | if (entry->id != 0) |
| 457 | idr_remove(&entry->priv->mem_idr, entry->id); |
| 458 | entry->id = 0; |
| 459 | |
| 460 | type = kgsl_memdesc_usermem_type(&entry->memdesc); |
| 461 | entry->priv->stats[type].cur -= entry->memdesc.size; |
Amit Kushwaha | 7c843c2 | 2018-04-09 20:41:14 +0530 | [diff] [blame] | 462 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 463 | spin_unlock(&entry->priv->mem_lock); |
| 464 | |
| 465 | kgsl_mmu_put_gpuaddr(&entry->memdesc); |
| 466 | |
| 467 | kgsl_process_private_put(entry->priv); |
| 468 | |
| 469 | entry->priv = NULL; |
| 470 | } |
| 471 | |
| 472 | /** |
| 473 | * kgsl_context_dump() - dump information about a draw context |
| 474 | * @device: KGSL device that owns the context |
| 475 | * @context: KGSL context to dump information about |
| 476 | * |
| 477 | * Dump specific information about the context to the kernel log. Used for |
| 478 | * fence timeout callbacks |
| 479 | */ |
| 480 | void kgsl_context_dump(struct kgsl_context *context) |
| 481 | { |
| 482 | struct kgsl_device *device; |
| 483 | |
| 484 | if (_kgsl_context_get(context) == 0) |
| 485 | return; |
| 486 | |
| 487 | device = context->device; |
| 488 | |
| 489 | if (kgsl_context_detached(context)) { |
| 490 | dev_err(device->dev, " context[%d]: context detached\n", |
| 491 | context->id); |
| 492 | } else if (device->ftbl->drawctxt_dump != NULL) |
| 493 | device->ftbl->drawctxt_dump(device, context); |
| 494 | |
| 495 | kgsl_context_put(context); |
| 496 | } |
| 497 | EXPORT_SYMBOL(kgsl_context_dump); |
| 498 | |
| 499 | /* Allocate a new context ID */ |
| 500 | static int _kgsl_get_context_id(struct kgsl_device *device) |
| 501 | { |
| 502 | int id; |
| 503 | |
| 504 | idr_preload(GFP_KERNEL); |
| 505 | write_lock(&device->context_lock); |
| 506 | /* Allocate the slot but don't put a pointer in it yet */ |
| 507 | id = idr_alloc(&device->context_idr, NULL, 1, |
| 508 | KGSL_MEMSTORE_MAX, GFP_NOWAIT); |
| 509 | write_unlock(&device->context_lock); |
| 510 | idr_preload_end(); |
| 511 | |
| 512 | return id; |
| 513 | } |
| 514 | |
| 515 | /** |
| 516 | * kgsl_context_init() - helper to initialize kgsl_context members |
| 517 | * @dev_priv: the owner of the context |
| 518 | * @context: the newly created context struct, should be allocated by |
| 519 | * the device specific drawctxt_create function. |
| 520 | * |
| 521 | * This is a helper function for the device specific drawctxt_create |
| 522 | * function to initialize the common members of its context struct. |
| 523 | * If this function succeeds, reference counting is active in the context |
| 524 | * struct and the caller should kgsl_context_put() it on error. |
| 525 | * If it fails, the caller should just free the context structure |
| 526 | * it passed in. |
| 527 | */ |
| 528 | int kgsl_context_init(struct kgsl_device_private *dev_priv, |
| 529 | struct kgsl_context *context) |
| 530 | { |
| 531 | struct kgsl_device *device = dev_priv->device; |
| 532 | char name[64]; |
| 533 | int ret = 0, id; |
Harshdeep Dhatt | 410e8393 | 2017-12-12 14:56:20 -0700 | [diff] [blame] | 534 | struct kgsl_process_private *proc_priv = dev_priv->process_priv; |
| 535 | |
Deepak Kumar | e0d19f9 | 2018-03-05 16:51:25 +0530 | [diff] [blame] | 536 | /* |
| 537 | * Read and increment the context count under lock to make sure |
| 538 | * no process goes beyond the specified context limit. |
| 539 | */ |
| 540 | spin_lock(&proc_priv->ctxt_count_lock); |
Harshdeep Dhatt | 410e8393 | 2017-12-12 14:56:20 -0700 | [diff] [blame] | 541 | if (atomic_read(&proc_priv->ctxt_count) > KGSL_MAX_CONTEXTS_PER_PROC) { |
Rajesh Kemisetti | 7ac2053 | 2018-08-10 13:30:07 +0530 | [diff] [blame] | 542 | KGSL_DRV_ERR_RATELIMIT(device, |
Harshdeep Dhatt | 410e8393 | 2017-12-12 14:56:20 -0700 | [diff] [blame] | 543 | "Per process context limit reached for pid %u", |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 544 | pid_nr(dev_priv->process_priv->pid)); |
Deepak Kumar | e0d19f9 | 2018-03-05 16:51:25 +0530 | [diff] [blame] | 545 | spin_unlock(&proc_priv->ctxt_count_lock); |
Harshdeep Dhatt | 410e8393 | 2017-12-12 14:56:20 -0700 | [diff] [blame] | 546 | return -ENOSPC; |
| 547 | } |
| 548 | |
| 549 | atomic_inc(&proc_priv->ctxt_count); |
Deepak Kumar | e0d19f9 | 2018-03-05 16:51:25 +0530 | [diff] [blame] | 550 | spin_unlock(&proc_priv->ctxt_count_lock); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 551 | |
| 552 | id = _kgsl_get_context_id(device); |
| 553 | if (id == -ENOSPC) { |
| 554 | /* |
| 555 | * Before declaring that there are no contexts left try |
| 556 | * flushing the event workqueue just in case there are |
| 557 | * detached contexts waiting to finish |
| 558 | */ |
| 559 | |
| 560 | flush_workqueue(device->events_wq); |
| 561 | id = _kgsl_get_context_id(device); |
| 562 | } |
| 563 | |
| 564 | if (id < 0) { |
| 565 | if (id == -ENOSPC) |
| 566 | KGSL_DRV_INFO(device, |
| 567 | "cannot have more than %zu contexts due to memstore limitation\n", |
| 568 | KGSL_MEMSTORE_MAX); |
Harshdeep Dhatt | 410e8393 | 2017-12-12 14:56:20 -0700 | [diff] [blame] | 569 | atomic_dec(&proc_priv->ctxt_count); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 570 | return id; |
| 571 | } |
| 572 | |
| 573 | context->id = id; |
| 574 | |
| 575 | kref_init(&context->refcount); |
| 576 | /* |
| 577 | * Get a refernce to the process private so its not destroyed, until |
| 578 | * the context is destroyed. This will also prevent the pagetable |
| 579 | * from being destroyed |
| 580 | */ |
| 581 | if (!kgsl_process_private_get(dev_priv->process_priv)) { |
| 582 | ret = -EBADF; |
| 583 | goto out; |
| 584 | } |
| 585 | context->device = dev_priv->device; |
| 586 | context->dev_priv = dev_priv; |
| 587 | context->proc_priv = dev_priv->process_priv; |
| 588 | context->tid = task_pid_nr(current); |
| 589 | |
| 590 | ret = kgsl_sync_timeline_create(context); |
Harshdeep Dhatt | b127389 | 2017-06-01 13:12:07 -0600 | [diff] [blame] | 591 | if (ret) { |
| 592 | kgsl_process_private_put(dev_priv->process_priv); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 593 | goto out; |
Harshdeep Dhatt | b127389 | 2017-06-01 13:12:07 -0600 | [diff] [blame] | 594 | } |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 595 | |
| 596 | snprintf(name, sizeof(name), "context-%d", id); |
| 597 | kgsl_add_event_group(&context->events, context, name, |
| 598 | kgsl_readtimestamp, context); |
| 599 | |
| 600 | out: |
| 601 | if (ret) { |
Harshdeep Dhatt | 410e8393 | 2017-12-12 14:56:20 -0700 | [diff] [blame] | 602 | atomic_dec(&proc_priv->ctxt_count); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 603 | write_lock(&device->context_lock); |
| 604 | idr_remove(&dev_priv->device->context_idr, id); |
| 605 | write_unlock(&device->context_lock); |
| 606 | } |
| 607 | |
| 608 | return ret; |
| 609 | } |
| 610 | EXPORT_SYMBOL(kgsl_context_init); |
| 611 | |
| 612 | /** |
| 613 | * kgsl_context_detach() - Release the "master" context reference |
| 614 | * @context: The context that will be detached |
| 615 | * |
| 616 | * This is called when a context becomes unusable, because userspace |
| 617 | * has requested for it to be destroyed. The context itself may |
| 618 | * exist a bit longer until its reference count goes to zero. |
| 619 | * Other code referencing the context can detect that it has been |
| 620 | * detached by checking the KGSL_CONTEXT_PRIV_DETACHED bit in |
| 621 | * context->priv. |
| 622 | */ |
Harshdeep Dhatt | 2e42f12 | 2017-05-31 17:27:19 -0600 | [diff] [blame] | 623 | void kgsl_context_detach(struct kgsl_context *context) |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 624 | { |
| 625 | struct kgsl_device *device; |
| 626 | |
| 627 | if (context == NULL) |
| 628 | return; |
| 629 | |
| 630 | /* |
| 631 | * Mark the context as detached to keep others from using |
| 632 | * the context before it gets fully removed, and to make sure |
| 633 | * we don't try to detach twice. |
| 634 | */ |
| 635 | if (test_and_set_bit(KGSL_CONTEXT_PRIV_DETACHED, &context->priv)) |
| 636 | return; |
| 637 | |
| 638 | device = context->device; |
| 639 | |
| 640 | trace_kgsl_context_detach(device, context); |
| 641 | |
| 642 | context->device->ftbl->drawctxt_detach(context); |
| 643 | |
| 644 | /* |
| 645 | * Cancel all pending events after the device-specific context is |
| 646 | * detached, to avoid possibly freeing memory while it is still |
| 647 | * in use by the GPU. |
| 648 | */ |
| 649 | kgsl_cancel_events(device, &context->events); |
| 650 | |
| 651 | /* Remove the event group from the list */ |
| 652 | kgsl_del_event_group(&context->events); |
| 653 | |
Lynus Vaz | c031a9b | 2017-01-25 13:00:13 +0530 | [diff] [blame] | 654 | kgsl_sync_timeline_put(context->ktimeline); |
| 655 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 656 | kgsl_context_put(context); |
| 657 | } |
| 658 | |
| 659 | void |
| 660 | kgsl_context_destroy(struct kref *kref) |
| 661 | { |
| 662 | struct kgsl_context *context = container_of(kref, struct kgsl_context, |
| 663 | refcount); |
| 664 | struct kgsl_device *device = context->device; |
| 665 | |
| 666 | trace_kgsl_context_destroy(device, context); |
| 667 | |
| 668 | /* |
| 669 | * It's not safe to destroy the context if it's not detached as GPU |
| 670 | * may still be executing commands |
| 671 | */ |
| 672 | BUG_ON(!kgsl_context_detached(context)); |
| 673 | |
| 674 | write_lock(&device->context_lock); |
| 675 | if (context->id != KGSL_CONTEXT_INVALID) { |
| 676 | |
| 677 | /* Clear the timestamps in the memstore during destroy */ |
| 678 | kgsl_sharedmem_writel(device, &device->memstore, |
| 679 | KGSL_MEMSTORE_OFFSET(context->id, soptimestamp), 0); |
| 680 | kgsl_sharedmem_writel(device, &device->memstore, |
| 681 | KGSL_MEMSTORE_OFFSET(context->id, eoptimestamp), 0); |
| 682 | |
| 683 | /* clear device power constraint */ |
| 684 | if (context->id == device->pwrctrl.constraint.owner_id) { |
| 685 | trace_kgsl_constraint(device, |
| 686 | device->pwrctrl.constraint.type, |
| 687 | device->pwrctrl.active_pwrlevel, |
| 688 | 0); |
| 689 | device->pwrctrl.constraint.type = KGSL_CONSTRAINT_NONE; |
| 690 | } |
| 691 | |
Harshdeep Dhatt | 410e8393 | 2017-12-12 14:56:20 -0700 | [diff] [blame] | 692 | atomic_dec(&context->proc_priv->ctxt_count); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 693 | idr_remove(&device->context_idr, context->id); |
| 694 | context->id = KGSL_CONTEXT_INVALID; |
| 695 | } |
| 696 | write_unlock(&device->context_lock); |
| 697 | kgsl_sync_timeline_destroy(context); |
| 698 | kgsl_process_private_put(context->proc_priv); |
| 699 | |
| 700 | device->ftbl->drawctxt_destroy(context); |
| 701 | } |
| 702 | |
| 703 | struct kgsl_device *kgsl_get_device(int dev_idx) |
| 704 | { |
| 705 | int i; |
| 706 | struct kgsl_device *ret = NULL; |
| 707 | |
| 708 | mutex_lock(&kgsl_driver.devlock); |
| 709 | |
| 710 | for (i = 0; i < KGSL_DEVICE_MAX; i++) { |
| 711 | if (kgsl_driver.devp[i] && kgsl_driver.devp[i]->id == dev_idx) { |
| 712 | ret = kgsl_driver.devp[i]; |
| 713 | break; |
| 714 | } |
| 715 | } |
| 716 | |
| 717 | mutex_unlock(&kgsl_driver.devlock); |
| 718 | return ret; |
| 719 | } |
| 720 | EXPORT_SYMBOL(kgsl_get_device); |
| 721 | |
| 722 | static struct kgsl_device *kgsl_get_minor(int minor) |
| 723 | { |
| 724 | struct kgsl_device *ret = NULL; |
| 725 | |
| 726 | if (minor < 0 || minor >= KGSL_DEVICE_MAX) |
| 727 | return NULL; |
| 728 | |
| 729 | mutex_lock(&kgsl_driver.devlock); |
| 730 | ret = kgsl_driver.devp[minor]; |
| 731 | mutex_unlock(&kgsl_driver.devlock); |
| 732 | |
| 733 | return ret; |
| 734 | } |
| 735 | |
| 736 | /** |
| 737 | * kgsl_check_timestamp() - return true if the specified timestamp is retired |
| 738 | * @device: Pointer to the KGSL device to check |
| 739 | * @context: Pointer to the context for the timestamp |
| 740 | * @timestamp: The timestamp to compare |
| 741 | */ |
| 742 | int kgsl_check_timestamp(struct kgsl_device *device, |
| 743 | struct kgsl_context *context, unsigned int timestamp) |
| 744 | { |
| 745 | unsigned int ts_processed; |
| 746 | |
| 747 | kgsl_readtimestamp(device, context, KGSL_TIMESTAMP_RETIRED, |
| 748 | &ts_processed); |
| 749 | |
| 750 | return (timestamp_cmp(ts_processed, timestamp) >= 0); |
| 751 | } |
| 752 | EXPORT_SYMBOL(kgsl_check_timestamp); |
| 753 | |
| 754 | static int kgsl_suspend_device(struct kgsl_device *device, pm_message_t state) |
| 755 | { |
| 756 | int status = -EINVAL; |
| 757 | |
| 758 | if (!device) |
| 759 | return -EINVAL; |
| 760 | |
| 761 | KGSL_PWR_WARN(device, "suspend start\n"); |
| 762 | |
| 763 | mutex_lock(&device->mutex); |
| 764 | status = kgsl_pwrctrl_change_state(device, KGSL_STATE_SUSPEND); |
Deepak Kumar | 10e2bc5 | 2018-08-01 11:57:33 +0530 | [diff] [blame] | 765 | if (status == 0 && device->state == KGSL_STATE_SUSPEND) |
Deepak Kumar | 79908f5 | 2018-02-28 11:06:38 +0530 | [diff] [blame] | 766 | device->ftbl->dispatcher_halt(device); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 767 | mutex_unlock(&device->mutex); |
| 768 | |
| 769 | KGSL_PWR_WARN(device, "suspend end\n"); |
| 770 | return status; |
| 771 | } |
| 772 | |
| 773 | static int kgsl_resume_device(struct kgsl_device *device) |
| 774 | { |
| 775 | if (!device) |
| 776 | return -EINVAL; |
| 777 | |
| 778 | KGSL_PWR_WARN(device, "resume start\n"); |
| 779 | mutex_lock(&device->mutex); |
| 780 | if (device->state == KGSL_STATE_SUSPEND) { |
Deepak Kumar | 79908f5 | 2018-02-28 11:06:38 +0530 | [diff] [blame] | 781 | device->ftbl->dispatcher_unhalt(device); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 782 | kgsl_pwrctrl_change_state(device, KGSL_STATE_SLUMBER); |
| 783 | } else if (device->state != KGSL_STATE_INIT) { |
| 784 | /* |
| 785 | * This is an error situation,so wait for the device |
| 786 | * to idle and then put the device to SLUMBER state. |
| 787 | * This will put the device to the right state when |
| 788 | * we resume. |
| 789 | */ |
| 790 | if (device->state == KGSL_STATE_ACTIVE) |
| 791 | device->ftbl->idle(device); |
| 792 | kgsl_pwrctrl_change_state(device, KGSL_STATE_SLUMBER); |
| 793 | KGSL_PWR_ERR(device, |
| 794 | "resume invoked without a suspend\n"); |
| 795 | } |
| 796 | |
| 797 | mutex_unlock(&device->mutex); |
| 798 | KGSL_PWR_WARN(device, "resume end\n"); |
| 799 | return 0; |
| 800 | } |
| 801 | |
| 802 | static int kgsl_suspend(struct device *dev) |
| 803 | { |
| 804 | |
| 805 | pm_message_t arg = {0}; |
| 806 | struct kgsl_device *device = dev_get_drvdata(dev); |
| 807 | |
| 808 | return kgsl_suspend_device(device, arg); |
| 809 | } |
| 810 | |
| 811 | static int kgsl_resume(struct device *dev) |
| 812 | { |
| 813 | struct kgsl_device *device = dev_get_drvdata(dev); |
| 814 | |
| 815 | return kgsl_resume_device(device); |
| 816 | } |
| 817 | |
| 818 | static int kgsl_runtime_suspend(struct device *dev) |
| 819 | { |
| 820 | return 0; |
| 821 | } |
| 822 | |
| 823 | static int kgsl_runtime_resume(struct device *dev) |
| 824 | { |
| 825 | return 0; |
| 826 | } |
| 827 | |
| 828 | const struct dev_pm_ops kgsl_pm_ops = { |
| 829 | .suspend = kgsl_suspend, |
| 830 | .resume = kgsl_resume, |
| 831 | .runtime_suspend = kgsl_runtime_suspend, |
| 832 | .runtime_resume = kgsl_runtime_resume, |
| 833 | }; |
| 834 | EXPORT_SYMBOL(kgsl_pm_ops); |
| 835 | |
| 836 | int kgsl_suspend_driver(struct platform_device *pdev, |
| 837 | pm_message_t state) |
| 838 | { |
| 839 | struct kgsl_device *device = dev_get_drvdata(&pdev->dev); |
| 840 | |
| 841 | return kgsl_suspend_device(device, state); |
| 842 | } |
| 843 | EXPORT_SYMBOL(kgsl_suspend_driver); |
| 844 | |
| 845 | int kgsl_resume_driver(struct platform_device *pdev) |
| 846 | { |
| 847 | struct kgsl_device *device = dev_get_drvdata(&pdev->dev); |
| 848 | |
| 849 | return kgsl_resume_device(device); |
| 850 | } |
| 851 | EXPORT_SYMBOL(kgsl_resume_driver); |
| 852 | |
| 853 | /** |
| 854 | * kgsl_destroy_process_private() - Cleanup function to free process private |
| 855 | * @kref: - Pointer to object being destroyed's kref struct |
| 856 | * Free struct object and all other resources attached to it. |
| 857 | * Since the function can be used when not all resources inside process |
| 858 | * private have been allocated, there is a check to (before each resource |
| 859 | * cleanup) see if the struct member being cleaned is in fact allocated or not. |
| 860 | * If the value is not NULL, resource is freed. |
| 861 | */ |
| 862 | static void kgsl_destroy_process_private(struct kref *kref) |
| 863 | { |
| 864 | struct kgsl_process_private *private = container_of(kref, |
| 865 | struct kgsl_process_private, refcount); |
| 866 | |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 867 | put_pid(private->pid); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 868 | idr_destroy(&private->mem_idr); |
| 869 | idr_destroy(&private->syncsource_idr); |
| 870 | |
| 871 | /* When using global pagetables, do not detach global pagetable */ |
| 872 | if (private->pagetable->name != KGSL_MMU_GLOBAL_PT) |
| 873 | kgsl_mmu_putpagetable(private->pagetable); |
| 874 | |
| 875 | kfree(private); |
| 876 | } |
| 877 | |
| 878 | void |
| 879 | kgsl_process_private_put(struct kgsl_process_private *private) |
| 880 | { |
| 881 | if (private) |
| 882 | kref_put(&private->refcount, kgsl_destroy_process_private); |
| 883 | } |
| 884 | |
| 885 | /** |
| 886 | * kgsl_process_private_find() - Find the process associated with the specified |
| 887 | * name |
| 888 | * @name: pid_t of the process to search for |
| 889 | * Return the process struct for the given ID. |
| 890 | */ |
| 891 | struct kgsl_process_private *kgsl_process_private_find(pid_t pid) |
| 892 | { |
| 893 | struct kgsl_process_private *p, *private = NULL; |
| 894 | |
| 895 | mutex_lock(&kgsl_driver.process_mutex); |
| 896 | list_for_each_entry(p, &kgsl_driver.process_list, list) { |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 897 | if (pid_nr(p->pid) == pid) { |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 898 | if (kgsl_process_private_get(p)) |
| 899 | private = p; |
| 900 | break; |
| 901 | } |
| 902 | } |
| 903 | mutex_unlock(&kgsl_driver.process_mutex); |
| 904 | return private; |
| 905 | } |
| 906 | |
| 907 | static struct kgsl_process_private *kgsl_process_private_new( |
| 908 | struct kgsl_device *device) |
| 909 | { |
| 910 | struct kgsl_process_private *private; |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 911 | struct pid *cur_pid = get_task_pid(current->group_leader, PIDTYPE_PID); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 912 | |
| 913 | /* Search in the process list */ |
| 914 | list_for_each_entry(private, &kgsl_driver.process_list, list) { |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 915 | if (private->pid == cur_pid) { |
| 916 | if (!kgsl_process_private_get(private)) { |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 917 | private = ERR_PTR(-EINVAL); |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 918 | } |
Archana Sriram | 81699bd | 2020-12-14 16:55:35 +0530 | [diff] [blame^] | 919 | /* |
| 920 | * We need to hold only one reference to the PID for |
| 921 | * each process struct to avoid overflowing the |
| 922 | * reference counter which can lead to use-after-free. |
| 923 | */ |
| 924 | put_pid(cur_pid); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 925 | return private; |
| 926 | } |
| 927 | } |
| 928 | |
| 929 | /* Create a new object */ |
| 930 | private = kzalloc(sizeof(struct kgsl_process_private), GFP_KERNEL); |
Archana Sriram | 81699bd | 2020-12-14 16:55:35 +0530 | [diff] [blame^] | 931 | if (private == NULL) { |
| 932 | put_pid(cur_pid); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 933 | return ERR_PTR(-ENOMEM); |
Archana Sriram | 81699bd | 2020-12-14 16:55:35 +0530 | [diff] [blame^] | 934 | } |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 935 | |
| 936 | kref_init(&private->refcount); |
| 937 | |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 938 | private->pid = cur_pid; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 939 | get_task_comm(private->comm, current->group_leader); |
| 940 | |
| 941 | spin_lock_init(&private->mem_lock); |
| 942 | spin_lock_init(&private->syncsource_lock); |
Deepak Kumar | e0d19f9 | 2018-03-05 16:51:25 +0530 | [diff] [blame] | 943 | spin_lock_init(&private->ctxt_count_lock); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 944 | |
| 945 | idr_init(&private->mem_idr); |
| 946 | idr_init(&private->syncsource_idr); |
| 947 | |
| 948 | /* Allocate a pagetable for the new process object */ |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 949 | private->pagetable = kgsl_mmu_getpagetable(&device->mmu, |
| 950 | pid_nr(cur_pid)); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 951 | if (IS_ERR(private->pagetable)) { |
| 952 | int err = PTR_ERR(private->pagetable); |
| 953 | |
| 954 | idr_destroy(&private->mem_idr); |
| 955 | idr_destroy(&private->syncsource_idr); |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 956 | put_pid(private->pid); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 957 | |
| 958 | kfree(private); |
| 959 | private = ERR_PTR(err); |
| 960 | } |
| 961 | |
| 962 | return private; |
| 963 | } |
| 964 | |
| 965 | static void process_release_memory(struct kgsl_process_private *private) |
| 966 | { |
| 967 | struct kgsl_mem_entry *entry; |
| 968 | int next = 0; |
| 969 | |
| 970 | while (1) { |
| 971 | spin_lock(&private->mem_lock); |
| 972 | entry = idr_get_next(&private->mem_idr, &next); |
| 973 | if (entry == NULL) { |
| 974 | spin_unlock(&private->mem_lock); |
| 975 | break; |
| 976 | } |
| 977 | /* |
| 978 | * If the free pending flag is not set it means that user space |
| 979 | * did not free it's reference to this entry, in that case |
| 980 | * free a reference to this entry, other references are from |
| 981 | * within kgsl so they will be freed eventually by kgsl |
| 982 | */ |
| 983 | if (!entry->pending_free) { |
| 984 | entry->pending_free = 1; |
| 985 | spin_unlock(&private->mem_lock); |
| 986 | kgsl_mem_entry_put(entry); |
| 987 | } else { |
| 988 | spin_unlock(&private->mem_lock); |
| 989 | } |
| 990 | next = next + 1; |
| 991 | } |
| 992 | } |
| 993 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 994 | static void kgsl_process_private_close(struct kgsl_device_private *dev_priv, |
| 995 | struct kgsl_process_private *private) |
| 996 | { |
| 997 | mutex_lock(&kgsl_driver.process_mutex); |
| 998 | |
| 999 | if (--private->fd_count > 0) { |
| 1000 | mutex_unlock(&kgsl_driver.process_mutex); |
| 1001 | kgsl_process_private_put(private); |
| 1002 | return; |
| 1003 | } |
| 1004 | |
| 1005 | /* |
| 1006 | * If this is the last file on the process take down the debug |
| 1007 | * directories and garbage collect any outstanding resources |
| 1008 | */ |
| 1009 | |
| 1010 | kgsl_process_uninit_sysfs(private); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1011 | |
Akhil P Oommen | b5f1b82 | 2018-03-08 20:10:52 +0530 | [diff] [blame] | 1012 | /* Release all syncsource objects from process private */ |
| 1013 | kgsl_syncsource_process_release_syncsources(private); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1014 | |
| 1015 | /* When using global pagetables, do not detach global pagetable */ |
| 1016 | if (private->pagetable->name != KGSL_MMU_GLOBAL_PT) |
| 1017 | kgsl_mmu_detach_pagetable(private->pagetable); |
| 1018 | |
| 1019 | /* Remove the process struct from the master list */ |
| 1020 | list_del(&private->list); |
| 1021 | |
| 1022 | /* |
Lynus Vaz | 98ffb32 | 2017-07-27 15:13:09 +0530 | [diff] [blame] | 1023 | * Unlock the mutex before releasing the memory and the debugfs |
| 1024 | * nodes - this prevents deadlocks with the IOMMU and debugfs |
| 1025 | * locks. |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1026 | */ |
| 1027 | mutex_unlock(&kgsl_driver.process_mutex); |
| 1028 | |
| 1029 | process_release_memory(private); |
Lynus Vaz | 98ffb32 | 2017-07-27 15:13:09 +0530 | [diff] [blame] | 1030 | debugfs_remove_recursive(private->debug_root); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1031 | |
| 1032 | kgsl_process_private_put(private); |
| 1033 | } |
| 1034 | |
| 1035 | |
| 1036 | static struct kgsl_process_private *kgsl_process_private_open( |
| 1037 | struct kgsl_device *device) |
| 1038 | { |
| 1039 | struct kgsl_process_private *private; |
| 1040 | |
| 1041 | mutex_lock(&kgsl_driver.process_mutex); |
| 1042 | private = kgsl_process_private_new(device); |
| 1043 | |
| 1044 | if (IS_ERR(private)) |
| 1045 | goto done; |
| 1046 | |
| 1047 | /* |
| 1048 | * If this is a new process create the debug directories and add it to |
| 1049 | * the process list |
| 1050 | */ |
| 1051 | |
| 1052 | if (private->fd_count++ == 0) { |
| 1053 | kgsl_process_init_sysfs(device, private); |
| 1054 | kgsl_process_init_debugfs(private); |
| 1055 | |
| 1056 | list_add(&private->list, &kgsl_driver.process_list); |
| 1057 | } |
| 1058 | |
| 1059 | done: |
| 1060 | mutex_unlock(&kgsl_driver.process_mutex); |
| 1061 | return private; |
| 1062 | } |
| 1063 | |
| 1064 | static int kgsl_close_device(struct kgsl_device *device) |
| 1065 | { |
| 1066 | int result = 0; |
| 1067 | |
| 1068 | mutex_lock(&device->mutex); |
Kyle Piefer | 89d64fe | 2017-05-15 09:15:43 -0700 | [diff] [blame] | 1069 | device->open_count--; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1070 | if (device->open_count == 0) { |
| 1071 | |
| 1072 | /* Wait for the active count to go to 0 */ |
| 1073 | kgsl_active_count_wait(device, 0); |
| 1074 | |
| 1075 | /* Fail if the wait times out */ |
| 1076 | BUG_ON(atomic_read(&device->active_cnt) > 0); |
| 1077 | |
| 1078 | result = kgsl_pwrctrl_change_state(device, KGSL_STATE_INIT); |
| 1079 | } |
| 1080 | mutex_unlock(&device->mutex); |
| 1081 | return result; |
| 1082 | |
| 1083 | } |
| 1084 | |
| 1085 | static void device_release_contexts(struct kgsl_device_private *dev_priv) |
| 1086 | { |
| 1087 | struct kgsl_device *device = dev_priv->device; |
| 1088 | struct kgsl_context *context; |
| 1089 | int next = 0; |
| 1090 | int result = 0; |
| 1091 | |
| 1092 | while (1) { |
| 1093 | read_lock(&device->context_lock); |
| 1094 | context = idr_get_next(&device->context_idr, &next); |
| 1095 | |
| 1096 | if (context == NULL) { |
| 1097 | read_unlock(&device->context_lock); |
| 1098 | break; |
| 1099 | } else if (context->dev_priv == dev_priv) { |
| 1100 | /* |
| 1101 | * Hold a reference to the context in case somebody |
| 1102 | * tries to put it while we are detaching |
| 1103 | */ |
| 1104 | result = _kgsl_context_get(context); |
| 1105 | } |
| 1106 | read_unlock(&device->context_lock); |
| 1107 | |
| 1108 | if (result) { |
| 1109 | kgsl_context_detach(context); |
| 1110 | kgsl_context_put(context); |
| 1111 | result = 0; |
| 1112 | } |
| 1113 | |
| 1114 | next = next + 1; |
| 1115 | } |
| 1116 | } |
| 1117 | |
| 1118 | static int kgsl_release(struct inode *inodep, struct file *filep) |
| 1119 | { |
| 1120 | struct kgsl_device_private *dev_priv = filep->private_data; |
| 1121 | struct kgsl_device *device = dev_priv->device; |
| 1122 | int result; |
| 1123 | |
| 1124 | filep->private_data = NULL; |
| 1125 | |
| 1126 | /* Release the contexts for the file */ |
| 1127 | device_release_contexts(dev_priv); |
| 1128 | |
| 1129 | /* Close down the process wide resources for the file */ |
| 1130 | kgsl_process_private_close(dev_priv, dev_priv->process_priv); |
| 1131 | |
Harshdeep Dhatt | f61e3b5 | 2014-12-15 13:45:19 -0700 | [diff] [blame] | 1132 | /* Destroy the device-specific structure */ |
| 1133 | device->ftbl->device_private_destroy(dev_priv); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1134 | |
| 1135 | result = kgsl_close_device(device); |
| 1136 | pm_runtime_put(&device->pdev->dev); |
| 1137 | |
| 1138 | return result; |
| 1139 | } |
| 1140 | |
| 1141 | static int kgsl_open_device(struct kgsl_device *device) |
| 1142 | { |
| 1143 | int result = 0; |
| 1144 | |
| 1145 | mutex_lock(&device->mutex); |
| 1146 | if (device->open_count == 0) { |
| 1147 | /* |
| 1148 | * active_cnt special case: we are starting up for the first |
| 1149 | * time, so use this sequence instead of the kgsl_pwrctrl_wake() |
| 1150 | * which will be called by kgsl_active_count_get(). |
| 1151 | */ |
| 1152 | atomic_inc(&device->active_cnt); |
| 1153 | kgsl_sharedmem_set(device, &device->memstore, 0, 0, |
| 1154 | device->memstore.size); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1155 | |
| 1156 | result = device->ftbl->init(device); |
| 1157 | if (result) |
| 1158 | goto err; |
| 1159 | |
| 1160 | result = device->ftbl->start(device, 0); |
| 1161 | if (result) |
| 1162 | goto err; |
| 1163 | /* |
| 1164 | * Make sure the gates are open, so they don't block until |
| 1165 | * we start suspend or FT. |
| 1166 | */ |
| 1167 | complete_all(&device->hwaccess_gate); |
| 1168 | kgsl_pwrctrl_change_state(device, KGSL_STATE_ACTIVE); |
| 1169 | kgsl_active_count_put(device); |
| 1170 | } |
| 1171 | device->open_count++; |
| 1172 | err: |
| 1173 | if (result) { |
| 1174 | kgsl_pwrctrl_change_state(device, KGSL_STATE_INIT); |
| 1175 | atomic_dec(&device->active_cnt); |
| 1176 | } |
| 1177 | |
| 1178 | mutex_unlock(&device->mutex); |
| 1179 | return result; |
| 1180 | } |
| 1181 | |
| 1182 | static int kgsl_open(struct inode *inodep, struct file *filep) |
| 1183 | { |
| 1184 | int result; |
| 1185 | struct kgsl_device_private *dev_priv; |
| 1186 | struct kgsl_device *device; |
| 1187 | unsigned int minor = iminor(inodep); |
| 1188 | |
| 1189 | device = kgsl_get_minor(minor); |
| 1190 | BUG_ON(device == NULL); |
| 1191 | |
| 1192 | result = pm_runtime_get_sync(&device->pdev->dev); |
| 1193 | if (result < 0) { |
| 1194 | KGSL_DRV_ERR(device, |
| 1195 | "Runtime PM: Unable to wake up the device, rc = %d\n", |
| 1196 | result); |
| 1197 | return result; |
| 1198 | } |
| 1199 | result = 0; |
| 1200 | |
Harshdeep Dhatt | f61e3b5 | 2014-12-15 13:45:19 -0700 | [diff] [blame] | 1201 | dev_priv = device->ftbl->device_private_create(); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1202 | if (dev_priv == NULL) { |
| 1203 | result = -ENOMEM; |
| 1204 | goto err; |
| 1205 | } |
| 1206 | |
| 1207 | dev_priv->device = device; |
| 1208 | filep->private_data = dev_priv; |
| 1209 | |
| 1210 | result = kgsl_open_device(device); |
| 1211 | if (result) |
| 1212 | goto err; |
| 1213 | |
| 1214 | /* |
| 1215 | * Get file (per process) private struct. This must be done |
| 1216 | * after the first start so that the global pagetable mappings |
| 1217 | * are set up before we create the per-process pagetable. |
| 1218 | */ |
| 1219 | dev_priv->process_priv = kgsl_process_private_open(device); |
| 1220 | if (IS_ERR(dev_priv->process_priv)) { |
| 1221 | result = PTR_ERR(dev_priv->process_priv); |
| 1222 | kgsl_close_device(device); |
| 1223 | goto err; |
| 1224 | } |
| 1225 | |
| 1226 | err: |
| 1227 | if (result) { |
| 1228 | filep->private_data = NULL; |
| 1229 | kfree(dev_priv); |
| 1230 | pm_runtime_put(&device->pdev->dev); |
| 1231 | } |
| 1232 | return result; |
| 1233 | } |
| 1234 | |
| 1235 | #define GPUADDR_IN_MEMDESC(_val, _memdesc) \ |
| 1236 | (((_val) >= (_memdesc)->gpuaddr) && \ |
| 1237 | ((_val) < ((_memdesc)->gpuaddr + (_memdesc)->size))) |
| 1238 | |
| 1239 | /** |
| 1240 | * kgsl_sharedmem_find() - Find a gpu memory allocation |
| 1241 | * |
| 1242 | * @private: private data for the process to check. |
| 1243 | * @gpuaddr: start address of the region |
| 1244 | * |
| 1245 | * Find a gpu allocation. Caller must kgsl_mem_entry_put() |
| 1246 | * the returned entry when finished using it. |
| 1247 | */ |
| 1248 | struct kgsl_mem_entry * __must_check |
| 1249 | kgsl_sharedmem_find(struct kgsl_process_private *private, uint64_t gpuaddr) |
| 1250 | { |
| 1251 | int ret = 0, id; |
| 1252 | struct kgsl_mem_entry *entry = NULL; |
| 1253 | |
| 1254 | if (!private) |
| 1255 | return NULL; |
| 1256 | |
| 1257 | if (!kgsl_mmu_gpuaddr_in_range(private->pagetable, gpuaddr)) |
| 1258 | return NULL; |
| 1259 | |
| 1260 | spin_lock(&private->mem_lock); |
| 1261 | idr_for_each_entry(&private->mem_idr, entry, id) { |
| 1262 | if (GPUADDR_IN_MEMDESC(gpuaddr, &entry->memdesc)) { |
Deepak Kumar | 0a4ef64e | 2017-05-08 15:29:03 +0530 | [diff] [blame] | 1263 | if (!entry->pending_free) |
| 1264 | ret = kgsl_mem_entry_get(entry); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1265 | break; |
| 1266 | } |
| 1267 | } |
| 1268 | spin_unlock(&private->mem_lock); |
| 1269 | |
| 1270 | return (ret == 0) ? NULL : entry; |
| 1271 | } |
| 1272 | EXPORT_SYMBOL(kgsl_sharedmem_find); |
| 1273 | |
| 1274 | struct kgsl_mem_entry * __must_check |
| 1275 | kgsl_sharedmem_find_id_flags(struct kgsl_process_private *process, |
| 1276 | unsigned int id, uint64_t flags) |
| 1277 | { |
| 1278 | int count = 0; |
| 1279 | struct kgsl_mem_entry *entry; |
| 1280 | |
| 1281 | spin_lock(&process->mem_lock); |
| 1282 | entry = idr_find(&process->mem_idr, id); |
| 1283 | if (entry) |
| 1284 | if (!entry->pending_free && |
| 1285 | (flags & entry->memdesc.flags) == flags) |
| 1286 | count = kgsl_mem_entry_get(entry); |
| 1287 | spin_unlock(&process->mem_lock); |
| 1288 | |
| 1289 | return (count == 0) ? NULL : entry; |
| 1290 | } |
| 1291 | |
| 1292 | /** |
| 1293 | * kgsl_sharedmem_find_id() - find a memory entry by id |
| 1294 | * @process: the owning process |
| 1295 | * @id: id to find |
| 1296 | * |
| 1297 | * @returns - the mem_entry or NULL |
| 1298 | * |
| 1299 | * Caller must kgsl_mem_entry_put() the returned entry, when finished using |
| 1300 | * it. |
| 1301 | */ |
| 1302 | struct kgsl_mem_entry * __must_check |
| 1303 | kgsl_sharedmem_find_id(struct kgsl_process_private *process, unsigned int id) |
| 1304 | { |
| 1305 | return kgsl_sharedmem_find_id_flags(process, id, 0); |
| 1306 | } |
| 1307 | |
| 1308 | /** |
| 1309 | * kgsl_mem_entry_unset_pend() - Unset the pending free flag of an entry |
| 1310 | * @entry - The memory entry |
| 1311 | */ |
| 1312 | static inline void kgsl_mem_entry_unset_pend(struct kgsl_mem_entry *entry) |
| 1313 | { |
| 1314 | if (entry == NULL) |
| 1315 | return; |
| 1316 | spin_lock(&entry->priv->mem_lock); |
| 1317 | entry->pending_free = 0; |
| 1318 | spin_unlock(&entry->priv->mem_lock); |
| 1319 | } |
| 1320 | |
| 1321 | /** |
| 1322 | * kgsl_mem_entry_set_pend() - Set the pending free flag of a memory entry |
| 1323 | * @entry - The memory entry |
| 1324 | * |
| 1325 | * @returns - true if pending flag was 0 else false |
| 1326 | * |
| 1327 | * This function will set the pending free flag if it is previously unset. Used |
| 1328 | * to prevent race condition between ioctls calling free/freememontimestamp |
| 1329 | * on the same entry. Whichever thread set's the flag first will do the free. |
| 1330 | */ |
| 1331 | static inline bool kgsl_mem_entry_set_pend(struct kgsl_mem_entry *entry) |
| 1332 | { |
| 1333 | bool ret = false; |
| 1334 | |
| 1335 | if (entry == NULL) |
| 1336 | return false; |
| 1337 | |
| 1338 | spin_lock(&entry->priv->mem_lock); |
| 1339 | if (!entry->pending_free) { |
| 1340 | entry->pending_free = 1; |
| 1341 | ret = true; |
| 1342 | } |
| 1343 | spin_unlock(&entry->priv->mem_lock); |
| 1344 | return ret; |
| 1345 | } |
| 1346 | |
| 1347 | /*call all ioctl sub functions with driver locked*/ |
| 1348 | long kgsl_ioctl_device_getproperty(struct kgsl_device_private *dev_priv, |
| 1349 | unsigned int cmd, void *data) |
| 1350 | { |
| 1351 | int result = 0; |
| 1352 | struct kgsl_device_getproperty *param = data; |
| 1353 | |
| 1354 | switch (param->type) { |
| 1355 | case KGSL_PROP_VERSION: |
| 1356 | { |
| 1357 | struct kgsl_version version; |
| 1358 | |
| 1359 | if (param->sizebytes != sizeof(version)) { |
| 1360 | result = -EINVAL; |
| 1361 | break; |
| 1362 | } |
| 1363 | |
| 1364 | version.drv_major = KGSL_VERSION_MAJOR; |
| 1365 | version.drv_minor = KGSL_VERSION_MINOR; |
| 1366 | version.dev_major = dev_priv->device->ver_major; |
| 1367 | version.dev_minor = dev_priv->device->ver_minor; |
| 1368 | |
| 1369 | if (copy_to_user(param->value, &version, sizeof(version))) |
| 1370 | result = -EFAULT; |
| 1371 | |
| 1372 | break; |
| 1373 | } |
| 1374 | case KGSL_PROP_GPU_RESET_STAT: |
| 1375 | { |
| 1376 | /* Return reset status of given context and clear it */ |
| 1377 | uint32_t id; |
| 1378 | struct kgsl_context *context; |
| 1379 | |
| 1380 | if (param->sizebytes != sizeof(unsigned int)) { |
| 1381 | result = -EINVAL; |
| 1382 | break; |
| 1383 | } |
| 1384 | /* We expect the value passed in to contain the context id */ |
| 1385 | if (copy_from_user(&id, param->value, |
| 1386 | sizeof(unsigned int))) { |
| 1387 | result = -EFAULT; |
| 1388 | break; |
| 1389 | } |
| 1390 | context = kgsl_context_get_owner(dev_priv, id); |
| 1391 | if (!context) { |
| 1392 | result = -EINVAL; |
| 1393 | break; |
| 1394 | } |
| 1395 | /* |
| 1396 | * Copy the reset status to value which also serves as |
| 1397 | * the out parameter |
| 1398 | */ |
| 1399 | if (copy_to_user(param->value, &(context->reset_status), |
| 1400 | sizeof(unsigned int))) |
| 1401 | result = -EFAULT; |
| 1402 | else { |
| 1403 | /* Clear reset status once its been queried */ |
| 1404 | context->reset_status = KGSL_CTX_STAT_NO_ERROR; |
| 1405 | } |
| 1406 | |
| 1407 | kgsl_context_put(context); |
| 1408 | break; |
| 1409 | } |
Sunil Khatri | b055b6b | 2018-07-19 17:10:39 +0530 | [diff] [blame] | 1410 | case KGSL_PROP_SECURE_BUFFER_ALIGNMENT: |
| 1411 | { |
| 1412 | unsigned int align; |
| 1413 | |
| 1414 | if (param->sizebytes != sizeof(unsigned int)) { |
| 1415 | result = -EINVAL; |
| 1416 | break; |
| 1417 | } |
| 1418 | /* |
| 1419 | * XPUv2 impose the constraint of 1MB memory alignment, |
| 1420 | * on the other hand Hypervisor does not have such |
| 1421 | * constraints. So driver should fulfill such |
| 1422 | * requirements when allocating secure memory. |
| 1423 | */ |
| 1424 | align = MMU_FEATURE(&dev_priv->device->mmu, |
| 1425 | KGSL_MMU_HYP_SECURE_ALLOC) ? PAGE_SIZE : SZ_1M; |
| 1426 | |
| 1427 | if (copy_to_user(param->value, &align, sizeof(align))) |
| 1428 | result = -EFAULT; |
| 1429 | |
| 1430 | break; |
| 1431 | } |
Sunil Khatri | c4d4c2d | 2018-08-10 11:46:58 +0530 | [diff] [blame] | 1432 | case KGSL_PROP_SECURE_CTXT_SUPPORT: |
| 1433 | { |
| 1434 | unsigned int secure_ctxt; |
| 1435 | |
| 1436 | if (param->sizebytes != sizeof(unsigned int)) { |
| 1437 | result = -EINVAL; |
| 1438 | break; |
| 1439 | } |
| 1440 | |
| 1441 | secure_ctxt = dev_priv->device->mmu.secured ? 1 : 0; |
| 1442 | |
| 1443 | if (copy_to_user(param->value, &secure_ctxt, |
| 1444 | sizeof(secure_ctxt))) |
| 1445 | result = -EFAULT; |
| 1446 | |
| 1447 | break; |
| 1448 | } |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1449 | default: |
| 1450 | if (is_compat_task()) |
| 1451 | result = dev_priv->device->ftbl->getproperty_compat( |
| 1452 | dev_priv->device, param->type, |
| 1453 | param->value, param->sizebytes); |
| 1454 | else |
| 1455 | result = dev_priv->device->ftbl->getproperty( |
| 1456 | dev_priv->device, param->type, |
| 1457 | param->value, param->sizebytes); |
| 1458 | } |
| 1459 | |
| 1460 | |
| 1461 | return result; |
| 1462 | } |
| 1463 | |
| 1464 | long kgsl_ioctl_device_setproperty(struct kgsl_device_private *dev_priv, |
| 1465 | unsigned int cmd, void *data) |
| 1466 | { |
| 1467 | int result = 0; |
| 1468 | /* The getproperty struct is reused for setproperty too */ |
| 1469 | struct kgsl_device_getproperty *param = data; |
| 1470 | |
| 1471 | /* Reroute to compat version if coming from compat_ioctl */ |
| 1472 | if (is_compat_task()) |
| 1473 | result = dev_priv->device->ftbl->setproperty_compat( |
| 1474 | dev_priv, param->type, param->value, |
| 1475 | param->sizebytes); |
| 1476 | else if (dev_priv->device->ftbl->setproperty) |
| 1477 | result = dev_priv->device->ftbl->setproperty( |
| 1478 | dev_priv, param->type, param->value, |
| 1479 | param->sizebytes); |
| 1480 | |
| 1481 | return result; |
| 1482 | } |
| 1483 | |
| 1484 | long kgsl_ioctl_device_waittimestamp_ctxtid( |
| 1485 | struct kgsl_device_private *dev_priv, unsigned int cmd, |
| 1486 | void *data) |
| 1487 | { |
| 1488 | struct kgsl_device_waittimestamp_ctxtid *param = data; |
| 1489 | struct kgsl_device *device = dev_priv->device; |
| 1490 | long result = -EINVAL; |
| 1491 | unsigned int temp_cur_ts = 0; |
| 1492 | struct kgsl_context *context; |
| 1493 | |
| 1494 | context = kgsl_context_get_owner(dev_priv, param->context_id); |
| 1495 | if (context == NULL) |
| 1496 | return result; |
| 1497 | |
| 1498 | kgsl_readtimestamp(device, context, KGSL_TIMESTAMP_RETIRED, |
| 1499 | &temp_cur_ts); |
| 1500 | |
| 1501 | trace_kgsl_waittimestamp_entry(device, context->id, temp_cur_ts, |
| 1502 | param->timestamp, param->timeout); |
| 1503 | |
| 1504 | result = device->ftbl->waittimestamp(device, context, param->timestamp, |
| 1505 | param->timeout); |
| 1506 | |
| 1507 | kgsl_readtimestamp(device, context, KGSL_TIMESTAMP_RETIRED, |
| 1508 | &temp_cur_ts); |
| 1509 | trace_kgsl_waittimestamp_exit(device, temp_cur_ts, result); |
| 1510 | |
| 1511 | kgsl_context_put(context); |
| 1512 | |
| 1513 | return result; |
| 1514 | } |
| 1515 | |
Tarun Karra | 2b8b363 | 2016-11-14 16:38:27 -0800 | [diff] [blame] | 1516 | static inline bool _check_context_is_sparse(struct kgsl_context *context, |
| 1517 | uint64_t flags) |
| 1518 | { |
| 1519 | if ((context->flags & KGSL_CONTEXT_SPARSE) || |
| 1520 | (flags & KGSL_DRAWOBJ_SPARSE)) |
| 1521 | return true; |
| 1522 | |
| 1523 | return false; |
| 1524 | } |
| 1525 | |
| 1526 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1527 | long kgsl_ioctl_rb_issueibcmds(struct kgsl_device_private *dev_priv, |
| 1528 | unsigned int cmd, void *data) |
| 1529 | { |
| 1530 | struct kgsl_ringbuffer_issueibcmds *param = data; |
| 1531 | struct kgsl_device *device = dev_priv->device; |
| 1532 | struct kgsl_context *context; |
| 1533 | struct kgsl_drawobj *drawobj; |
| 1534 | struct kgsl_drawobj_cmd *cmdobj; |
| 1535 | long result = -EINVAL; |
| 1536 | |
| 1537 | /* The legacy functions don't support synchronization commands */ |
| 1538 | if ((param->flags & (KGSL_DRAWOBJ_SYNC | KGSL_DRAWOBJ_MARKER))) |
| 1539 | return -EINVAL; |
| 1540 | |
| 1541 | /* Sanity check the number of IBs */ |
| 1542 | if (param->flags & KGSL_DRAWOBJ_SUBMIT_IB_LIST && |
| 1543 | (param->numibs == 0 || param->numibs > KGSL_MAX_NUMIBS)) |
| 1544 | return -EINVAL; |
| 1545 | |
| 1546 | /* Get the context */ |
| 1547 | context = kgsl_context_get_owner(dev_priv, param->drawctxt_id); |
| 1548 | if (context == NULL) |
| 1549 | return -EINVAL; |
| 1550 | |
Tarun Karra | 2b8b363 | 2016-11-14 16:38:27 -0800 | [diff] [blame] | 1551 | if (_check_context_is_sparse(context, param->flags)) { |
| 1552 | kgsl_context_put(context); |
| 1553 | return -EINVAL; |
| 1554 | } |
| 1555 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1556 | cmdobj = kgsl_drawobj_cmd_create(device, context, param->flags, |
| 1557 | CMDOBJ_TYPE); |
| 1558 | if (IS_ERR(cmdobj)) { |
| 1559 | kgsl_context_put(context); |
| 1560 | return PTR_ERR(cmdobj); |
| 1561 | } |
| 1562 | |
| 1563 | drawobj = DRAWOBJ(cmdobj); |
| 1564 | |
| 1565 | if (param->flags & KGSL_DRAWOBJ_SUBMIT_IB_LIST) |
| 1566 | result = kgsl_drawobj_cmd_add_ibdesc_list(device, cmdobj, |
| 1567 | (void __user *) param->ibdesc_addr, |
| 1568 | param->numibs); |
| 1569 | else { |
| 1570 | struct kgsl_ibdesc ibdesc; |
| 1571 | /* Ultra legacy path */ |
| 1572 | |
| 1573 | ibdesc.gpuaddr = param->ibdesc_addr; |
| 1574 | ibdesc.sizedwords = param->numibs; |
| 1575 | ibdesc.ctrl = 0; |
| 1576 | |
| 1577 | result = kgsl_drawobj_cmd_add_ibdesc(device, cmdobj, &ibdesc); |
| 1578 | } |
| 1579 | |
| 1580 | if (result == 0) |
| 1581 | result = dev_priv->device->ftbl->queue_cmds(dev_priv, context, |
| 1582 | &drawobj, 1, ¶m->timestamp); |
| 1583 | |
| 1584 | /* |
| 1585 | * -EPROTO is a "success" error - it just tells the user that the |
| 1586 | * context had previously faulted |
| 1587 | */ |
| 1588 | if (result && result != -EPROTO) |
| 1589 | kgsl_drawobj_destroy(drawobj); |
| 1590 | |
| 1591 | kgsl_context_put(context); |
| 1592 | return result; |
| 1593 | } |
| 1594 | |
| 1595 | /* Returns 0 on failure. Returns command type(s) on success */ |
| 1596 | static unsigned int _process_command_input(struct kgsl_device *device, |
| 1597 | unsigned int flags, unsigned int numcmds, |
| 1598 | unsigned int numobjs, unsigned int numsyncs) |
| 1599 | { |
| 1600 | if (numcmds > KGSL_MAX_NUMIBS || |
| 1601 | numobjs > KGSL_MAX_NUMIBS || |
| 1602 | numsyncs > KGSL_MAX_SYNCPOINTS) |
| 1603 | return 0; |
| 1604 | |
| 1605 | /* |
| 1606 | * The SYNC bit is supposed to identify a dummy sync object |
| 1607 | * so warn the user if they specified any IBs with it. |
| 1608 | * A MARKER command can either have IBs or not but if the |
| 1609 | * command has 0 IBs it is automatically assumed to be a marker. |
| 1610 | */ |
| 1611 | |
| 1612 | /* If they specify the flag, go with what they say */ |
| 1613 | if (flags & KGSL_DRAWOBJ_MARKER) |
| 1614 | return MARKEROBJ_TYPE; |
| 1615 | else if (flags & KGSL_DRAWOBJ_SYNC) |
| 1616 | return SYNCOBJ_TYPE; |
| 1617 | |
| 1618 | /* If not, deduce what they meant */ |
| 1619 | if (numsyncs && numcmds) |
| 1620 | return SYNCOBJ_TYPE | CMDOBJ_TYPE; |
| 1621 | else if (numsyncs) |
| 1622 | return SYNCOBJ_TYPE; |
| 1623 | else if (numcmds) |
| 1624 | return CMDOBJ_TYPE; |
| 1625 | else if (numcmds == 0) |
| 1626 | return MARKEROBJ_TYPE; |
| 1627 | |
| 1628 | return 0; |
| 1629 | } |
| 1630 | |
| 1631 | long kgsl_ioctl_submit_commands(struct kgsl_device_private *dev_priv, |
| 1632 | unsigned int cmd, void *data) |
| 1633 | { |
| 1634 | struct kgsl_submit_commands *param = data; |
| 1635 | struct kgsl_device *device = dev_priv->device; |
| 1636 | struct kgsl_context *context; |
| 1637 | struct kgsl_drawobj *drawobj[2]; |
| 1638 | unsigned int type; |
| 1639 | long result; |
| 1640 | unsigned int i = 0; |
| 1641 | |
| 1642 | type = _process_command_input(device, param->flags, param->numcmds, 0, |
| 1643 | param->numsyncs); |
| 1644 | if (!type) |
| 1645 | return -EINVAL; |
| 1646 | |
| 1647 | context = kgsl_context_get_owner(dev_priv, param->context_id); |
| 1648 | if (context == NULL) |
| 1649 | return -EINVAL; |
| 1650 | |
Tarun Karra | 2b8b363 | 2016-11-14 16:38:27 -0800 | [diff] [blame] | 1651 | if (_check_context_is_sparse(context, param->flags)) { |
| 1652 | kgsl_context_put(context); |
| 1653 | return -EINVAL; |
| 1654 | } |
| 1655 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1656 | if (type & SYNCOBJ_TYPE) { |
| 1657 | struct kgsl_drawobj_sync *syncobj = |
| 1658 | kgsl_drawobj_sync_create(device, context); |
| 1659 | if (IS_ERR(syncobj)) { |
| 1660 | result = PTR_ERR(syncobj); |
| 1661 | goto done; |
| 1662 | } |
| 1663 | |
| 1664 | drawobj[i++] = DRAWOBJ(syncobj); |
| 1665 | |
| 1666 | result = kgsl_drawobj_sync_add_syncpoints(device, syncobj, |
| 1667 | param->synclist, param->numsyncs); |
| 1668 | if (result) |
| 1669 | goto done; |
| 1670 | } |
| 1671 | |
| 1672 | if (type & (CMDOBJ_TYPE | MARKEROBJ_TYPE)) { |
| 1673 | struct kgsl_drawobj_cmd *cmdobj = |
| 1674 | kgsl_drawobj_cmd_create(device, |
| 1675 | context, param->flags, type); |
| 1676 | if (IS_ERR(cmdobj)) { |
| 1677 | result = PTR_ERR(cmdobj); |
| 1678 | goto done; |
| 1679 | } |
| 1680 | |
| 1681 | drawobj[i++] = DRAWOBJ(cmdobj); |
| 1682 | |
| 1683 | result = kgsl_drawobj_cmd_add_ibdesc_list(device, cmdobj, |
| 1684 | param->cmdlist, param->numcmds); |
| 1685 | if (result) |
| 1686 | goto done; |
| 1687 | |
| 1688 | /* If no profiling buffer was specified, clear the flag */ |
| 1689 | if (cmdobj->profiling_buf_entry == NULL) |
Lynus Vaz | eb7af68 | 2017-04-17 18:36:01 +0530 | [diff] [blame] | 1690 | DRAWOBJ(cmdobj)->flags &= |
| 1691 | ~(unsigned long)KGSL_DRAWOBJ_PROFILING; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1692 | } |
| 1693 | |
| 1694 | result = device->ftbl->queue_cmds(dev_priv, context, drawobj, |
| 1695 | i, ¶m->timestamp); |
| 1696 | |
| 1697 | done: |
| 1698 | /* |
| 1699 | * -EPROTO is a "success" error - it just tells the user that the |
| 1700 | * context had previously faulted |
| 1701 | */ |
| 1702 | if (result && result != -EPROTO) |
| 1703 | while (i--) |
| 1704 | kgsl_drawobj_destroy(drawobj[i]); |
| 1705 | |
| 1706 | |
| 1707 | kgsl_context_put(context); |
| 1708 | return result; |
| 1709 | } |
| 1710 | |
| 1711 | long kgsl_ioctl_gpu_command(struct kgsl_device_private *dev_priv, |
| 1712 | unsigned int cmd, void *data) |
| 1713 | { |
| 1714 | struct kgsl_gpu_command *param = data; |
| 1715 | struct kgsl_device *device = dev_priv->device; |
| 1716 | struct kgsl_context *context; |
| 1717 | struct kgsl_drawobj *drawobj[2]; |
| 1718 | unsigned int type; |
| 1719 | long result; |
| 1720 | unsigned int i = 0; |
| 1721 | |
| 1722 | type = _process_command_input(device, param->flags, param->numcmds, |
| 1723 | param->numobjs, param->numsyncs); |
| 1724 | if (!type) |
| 1725 | return -EINVAL; |
| 1726 | |
| 1727 | context = kgsl_context_get_owner(dev_priv, param->context_id); |
| 1728 | if (context == NULL) |
| 1729 | return -EINVAL; |
| 1730 | |
Tarun Karra | 2b8b363 | 2016-11-14 16:38:27 -0800 | [diff] [blame] | 1731 | if (_check_context_is_sparse(context, param->flags)) { |
| 1732 | kgsl_context_put(context); |
| 1733 | return -EINVAL; |
| 1734 | } |
| 1735 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1736 | if (type & SYNCOBJ_TYPE) { |
| 1737 | struct kgsl_drawobj_sync *syncobj = |
| 1738 | kgsl_drawobj_sync_create(device, context); |
| 1739 | |
| 1740 | if (IS_ERR(syncobj)) { |
| 1741 | result = PTR_ERR(syncobj); |
| 1742 | goto done; |
| 1743 | } |
| 1744 | |
| 1745 | drawobj[i++] = DRAWOBJ(syncobj); |
| 1746 | |
| 1747 | result = kgsl_drawobj_sync_add_synclist(device, syncobj, |
| 1748 | to_user_ptr(param->synclist), |
| 1749 | param->syncsize, param->numsyncs); |
| 1750 | if (result) |
| 1751 | goto done; |
| 1752 | } |
| 1753 | |
| 1754 | if (type & (CMDOBJ_TYPE | MARKEROBJ_TYPE)) { |
| 1755 | struct kgsl_drawobj_cmd *cmdobj = |
| 1756 | kgsl_drawobj_cmd_create(device, |
| 1757 | context, param->flags, type); |
| 1758 | |
| 1759 | if (IS_ERR(cmdobj)) { |
| 1760 | result = PTR_ERR(cmdobj); |
| 1761 | goto done; |
| 1762 | } |
| 1763 | |
| 1764 | drawobj[i++] = DRAWOBJ(cmdobj); |
| 1765 | |
| 1766 | result = kgsl_drawobj_cmd_add_cmdlist(device, cmdobj, |
| 1767 | to_user_ptr(param->cmdlist), |
| 1768 | param->cmdsize, param->numcmds); |
| 1769 | if (result) |
| 1770 | goto done; |
| 1771 | |
| 1772 | result = kgsl_drawobj_cmd_add_memlist(device, cmdobj, |
| 1773 | to_user_ptr(param->objlist), |
| 1774 | param->objsize, param->numobjs); |
| 1775 | if (result) |
| 1776 | goto done; |
| 1777 | |
| 1778 | /* If no profiling buffer was specified, clear the flag */ |
| 1779 | if (cmdobj->profiling_buf_entry == NULL) |
Lynus Vaz | eb7af68 | 2017-04-17 18:36:01 +0530 | [diff] [blame] | 1780 | DRAWOBJ(cmdobj)->flags &= |
| 1781 | ~(unsigned long)KGSL_DRAWOBJ_PROFILING; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1782 | } |
| 1783 | |
| 1784 | result = device->ftbl->queue_cmds(dev_priv, context, drawobj, |
| 1785 | i, ¶m->timestamp); |
| 1786 | |
| 1787 | done: |
| 1788 | /* |
| 1789 | * -EPROTO is a "success" error - it just tells the user that the |
| 1790 | * context had previously faulted |
| 1791 | */ |
| 1792 | if (result && result != -EPROTO) |
| 1793 | while (i--) |
| 1794 | kgsl_drawobj_destroy(drawobj[i]); |
| 1795 | |
| 1796 | kgsl_context_put(context); |
| 1797 | return result; |
| 1798 | } |
| 1799 | |
| 1800 | long kgsl_ioctl_cmdstream_readtimestamp_ctxtid(struct kgsl_device_private |
| 1801 | *dev_priv, unsigned int cmd, |
| 1802 | void *data) |
| 1803 | { |
| 1804 | struct kgsl_cmdstream_readtimestamp_ctxtid *param = data; |
| 1805 | struct kgsl_device *device = dev_priv->device; |
| 1806 | struct kgsl_context *context; |
| 1807 | long result = -EINVAL; |
| 1808 | |
| 1809 | mutex_lock(&device->mutex); |
| 1810 | context = kgsl_context_get_owner(dev_priv, param->context_id); |
| 1811 | |
| 1812 | if (context) { |
| 1813 | result = kgsl_readtimestamp(device, context, |
| 1814 | param->type, ¶m->timestamp); |
| 1815 | |
| 1816 | trace_kgsl_readtimestamp(device, context->id, |
| 1817 | param->type, param->timestamp); |
| 1818 | } |
| 1819 | |
| 1820 | kgsl_context_put(context); |
| 1821 | mutex_unlock(&device->mutex); |
| 1822 | return result; |
| 1823 | } |
| 1824 | |
| 1825 | long kgsl_ioctl_drawctxt_create(struct kgsl_device_private *dev_priv, |
| 1826 | unsigned int cmd, void *data) |
| 1827 | { |
| 1828 | int result = 0; |
| 1829 | struct kgsl_drawctxt_create *param = data; |
| 1830 | struct kgsl_context *context = NULL; |
| 1831 | struct kgsl_device *device = dev_priv->device; |
| 1832 | |
| 1833 | context = device->ftbl->drawctxt_create(dev_priv, ¶m->flags); |
| 1834 | if (IS_ERR(context)) { |
| 1835 | result = PTR_ERR(context); |
| 1836 | goto done; |
| 1837 | } |
| 1838 | trace_kgsl_context_create(dev_priv->device, context, param->flags); |
| 1839 | |
| 1840 | /* Commit the pointer to the context in context_idr */ |
| 1841 | write_lock(&device->context_lock); |
| 1842 | idr_replace(&device->context_idr, context, context->id); |
Sunil Khatri | dd90d68 | 2017-04-06 18:28:31 +0530 | [diff] [blame] | 1843 | param->drawctxt_id = context->id; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1844 | write_unlock(&device->context_lock); |
| 1845 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1846 | done: |
| 1847 | return result; |
| 1848 | } |
| 1849 | |
| 1850 | long kgsl_ioctl_drawctxt_destroy(struct kgsl_device_private *dev_priv, |
| 1851 | unsigned int cmd, void *data) |
| 1852 | { |
| 1853 | struct kgsl_drawctxt_destroy *param = data; |
| 1854 | struct kgsl_context *context; |
| 1855 | |
| 1856 | context = kgsl_context_get_owner(dev_priv, param->drawctxt_id); |
| 1857 | if (context == NULL) |
| 1858 | return -EINVAL; |
| 1859 | |
| 1860 | kgsl_context_detach(context); |
| 1861 | kgsl_context_put(context); |
| 1862 | |
| 1863 | return 0; |
| 1864 | } |
| 1865 | |
Harshdeep Dhatt | 2e42f12 | 2017-05-31 17:27:19 -0600 | [diff] [blame] | 1866 | long gpumem_free_entry(struct kgsl_mem_entry *entry) |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1867 | { |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1868 | if (!kgsl_mem_entry_set_pend(entry)) |
| 1869 | return -EBUSY; |
| 1870 | |
| 1871 | trace_kgsl_mem_free(entry); |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 1872 | kgsl_memfree_add(pid_nr(entry->priv->pid), |
Lynus Vaz | 3fe6758 | 2017-11-08 15:22:32 +0530 | [diff] [blame] | 1873 | entry->memdesc.pagetable ? |
| 1874 | entry->memdesc.pagetable->name : 0, |
| 1875 | entry->memdesc.gpuaddr, entry->memdesc.size, |
| 1876 | entry->memdesc.flags); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1877 | |
| 1878 | kgsl_mem_entry_put(entry); |
| 1879 | |
| 1880 | return 0; |
| 1881 | } |
| 1882 | |
| 1883 | static void gpumem_free_func(struct kgsl_device *device, |
| 1884 | struct kgsl_event_group *group, void *priv, int ret) |
| 1885 | { |
| 1886 | struct kgsl_context *context = group->context; |
| 1887 | struct kgsl_mem_entry *entry = priv; |
| 1888 | unsigned int timestamp; |
| 1889 | |
| 1890 | kgsl_readtimestamp(device, context, KGSL_TIMESTAMP_RETIRED, ×tamp); |
| 1891 | |
| 1892 | /* Free the memory for all event types */ |
| 1893 | trace_kgsl_mem_timestamp_free(device, entry, KGSL_CONTEXT_ID(context), |
| 1894 | timestamp, 0); |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 1895 | kgsl_memfree_add(pid_nr(entry->priv->pid), |
Lynus Vaz | 3fe6758 | 2017-11-08 15:22:32 +0530 | [diff] [blame] | 1896 | entry->memdesc.pagetable ? |
| 1897 | entry->memdesc.pagetable->name : 0, |
| 1898 | entry->memdesc.gpuaddr, entry->memdesc.size, |
| 1899 | entry->memdesc.flags); |
| 1900 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1901 | kgsl_mem_entry_put(entry); |
| 1902 | } |
| 1903 | |
| 1904 | static long gpumem_free_entry_on_timestamp(struct kgsl_device *device, |
| 1905 | struct kgsl_mem_entry *entry, |
| 1906 | struct kgsl_context *context, unsigned int timestamp) |
| 1907 | { |
| 1908 | int ret; |
| 1909 | unsigned int temp; |
| 1910 | |
| 1911 | if (!kgsl_mem_entry_set_pend(entry)) |
| 1912 | return -EBUSY; |
| 1913 | |
| 1914 | kgsl_readtimestamp(device, context, KGSL_TIMESTAMP_RETIRED, &temp); |
| 1915 | trace_kgsl_mem_timestamp_queue(device, entry, context->id, temp, |
| 1916 | timestamp); |
| 1917 | ret = kgsl_add_event(device, &context->events, |
| 1918 | timestamp, gpumem_free_func, entry); |
| 1919 | |
| 1920 | if (ret) |
| 1921 | kgsl_mem_entry_unset_pend(entry); |
| 1922 | |
| 1923 | return ret; |
| 1924 | } |
| 1925 | |
| 1926 | long kgsl_ioctl_sharedmem_free(struct kgsl_device_private *dev_priv, |
| 1927 | unsigned int cmd, void *data) |
| 1928 | { |
| 1929 | struct kgsl_sharedmem_free *param = data; |
| 1930 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 1931 | struct kgsl_mem_entry *entry; |
| 1932 | long ret; |
| 1933 | |
| 1934 | entry = kgsl_sharedmem_find(private, (uint64_t) param->gpuaddr); |
| 1935 | if (entry == NULL) |
| 1936 | return -EINVAL; |
| 1937 | |
| 1938 | ret = gpumem_free_entry(entry); |
Hareesh Gundu | 615439d | 2017-06-16 17:06:57 +0530 | [diff] [blame] | 1939 | kgsl_mem_entry_put(entry); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1940 | |
| 1941 | return ret; |
| 1942 | } |
| 1943 | |
| 1944 | long kgsl_ioctl_gpumem_free_id(struct kgsl_device_private *dev_priv, |
| 1945 | unsigned int cmd, void *data) |
| 1946 | { |
| 1947 | struct kgsl_gpumem_free_id *param = data; |
| 1948 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 1949 | struct kgsl_mem_entry *entry; |
| 1950 | long ret; |
| 1951 | |
| 1952 | entry = kgsl_sharedmem_find_id(private, param->id); |
| 1953 | if (entry == NULL) |
| 1954 | return -EINVAL; |
| 1955 | |
| 1956 | ret = gpumem_free_entry(entry); |
Hareesh Gundu | 615439d | 2017-06-16 17:06:57 +0530 | [diff] [blame] | 1957 | kgsl_mem_entry_put(entry); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1958 | |
| 1959 | return ret; |
| 1960 | } |
| 1961 | |
| 1962 | static long gpuobj_free_on_timestamp(struct kgsl_device_private *dev_priv, |
| 1963 | struct kgsl_mem_entry *entry, struct kgsl_gpuobj_free *param) |
| 1964 | { |
| 1965 | struct kgsl_gpu_event_timestamp event; |
| 1966 | struct kgsl_context *context; |
| 1967 | long ret; |
| 1968 | |
| 1969 | memset(&event, 0, sizeof(event)); |
| 1970 | |
| 1971 | ret = _copy_from_user(&event, to_user_ptr(param->priv), |
| 1972 | sizeof(event), param->len); |
| 1973 | if (ret) |
| 1974 | return ret; |
| 1975 | |
| 1976 | if (event.context_id == 0) |
| 1977 | return -EINVAL; |
| 1978 | |
| 1979 | context = kgsl_context_get_owner(dev_priv, event.context_id); |
| 1980 | if (context == NULL) |
| 1981 | return -EINVAL; |
| 1982 | |
| 1983 | ret = gpumem_free_entry_on_timestamp(dev_priv->device, entry, context, |
| 1984 | event.timestamp); |
| 1985 | |
| 1986 | kgsl_context_put(context); |
| 1987 | return ret; |
| 1988 | } |
| 1989 | |
Lynus Vaz | 27da44d | 2017-07-26 13:50:10 +0530 | [diff] [blame] | 1990 | static bool gpuobj_free_fence_func(void *priv) |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 1991 | { |
| 1992 | struct kgsl_mem_entry *entry = priv; |
| 1993 | |
Lynus Vaz | 3fe6758 | 2017-11-08 15:22:32 +0530 | [diff] [blame] | 1994 | trace_kgsl_mem_free(entry); |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 1995 | kgsl_memfree_add(pid_nr(entry->priv->pid), |
Lynus Vaz | 3fe6758 | 2017-11-08 15:22:32 +0530 | [diff] [blame] | 1996 | entry->memdesc.pagetable ? |
| 1997 | entry->memdesc.pagetable->name : 0, |
| 1998 | entry->memdesc.gpuaddr, entry->memdesc.size, |
| 1999 | entry->memdesc.flags); |
| 2000 | |
Hareesh Gundu | 615439d | 2017-06-16 17:06:57 +0530 | [diff] [blame] | 2001 | INIT_WORK(&entry->work, _deferred_put); |
| 2002 | queue_work(kgsl_driver.mem_workqueue, &entry->work); |
Lynus Vaz | 27da44d | 2017-07-26 13:50:10 +0530 | [diff] [blame] | 2003 | return true; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2004 | } |
| 2005 | |
| 2006 | static long gpuobj_free_on_fence(struct kgsl_device_private *dev_priv, |
| 2007 | struct kgsl_mem_entry *entry, struct kgsl_gpuobj_free *param) |
| 2008 | { |
Lynus Vaz | c031a9b | 2017-01-25 13:00:13 +0530 | [diff] [blame] | 2009 | struct kgsl_sync_fence_cb *handle; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2010 | struct kgsl_gpu_event_fence event; |
| 2011 | long ret; |
| 2012 | |
| 2013 | if (!kgsl_mem_entry_set_pend(entry)) |
| 2014 | return -EBUSY; |
| 2015 | |
| 2016 | memset(&event, 0, sizeof(event)); |
| 2017 | |
| 2018 | ret = _copy_from_user(&event, to_user_ptr(param->priv), |
| 2019 | sizeof(event), param->len); |
| 2020 | if (ret) { |
| 2021 | kgsl_mem_entry_unset_pend(entry); |
| 2022 | return ret; |
| 2023 | } |
| 2024 | |
| 2025 | if (event.fd < 0) { |
| 2026 | kgsl_mem_entry_unset_pend(entry); |
| 2027 | return -EINVAL; |
| 2028 | } |
| 2029 | |
| 2030 | handle = kgsl_sync_fence_async_wait(event.fd, |
Puranam V G Tejaswi | 0ebbdcd | 2018-12-13 15:47:00 +0530 | [diff] [blame] | 2031 | gpuobj_free_fence_func, entry, NULL); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2032 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2033 | if (IS_ERR(handle)) { |
| 2034 | kgsl_mem_entry_unset_pend(entry); |
| 2035 | return PTR_ERR(handle); |
| 2036 | } |
| 2037 | |
Lynus Vaz | 3fe6758 | 2017-11-08 15:22:32 +0530 | [diff] [blame] | 2038 | /* if handle is NULL the fence has already signaled */ |
| 2039 | if (handle == NULL) |
| 2040 | gpuobj_free_fence_func(entry); |
| 2041 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2042 | return 0; |
| 2043 | } |
| 2044 | |
| 2045 | long kgsl_ioctl_gpuobj_free(struct kgsl_device_private *dev_priv, |
| 2046 | unsigned int cmd, void *data) |
| 2047 | { |
| 2048 | struct kgsl_gpuobj_free *param = data; |
| 2049 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 2050 | struct kgsl_mem_entry *entry; |
| 2051 | long ret; |
| 2052 | |
| 2053 | entry = kgsl_sharedmem_find_id(private, param->id); |
| 2054 | if (entry == NULL) |
| 2055 | return -EINVAL; |
| 2056 | |
| 2057 | /* If no event is specified then free immediately */ |
| 2058 | if (!(param->flags & KGSL_GPUOBJ_FREE_ON_EVENT)) |
| 2059 | ret = gpumem_free_entry(entry); |
| 2060 | else if (param->type == KGSL_GPU_EVENT_TIMESTAMP) |
| 2061 | ret = gpuobj_free_on_timestamp(dev_priv, entry, param); |
| 2062 | else if (param->type == KGSL_GPU_EVENT_FENCE) |
| 2063 | ret = gpuobj_free_on_fence(dev_priv, entry, param); |
| 2064 | else |
| 2065 | ret = -EINVAL; |
| 2066 | |
Hareesh Gundu | 615439d | 2017-06-16 17:06:57 +0530 | [diff] [blame] | 2067 | kgsl_mem_entry_put(entry); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2068 | return ret; |
| 2069 | } |
| 2070 | |
| 2071 | long kgsl_ioctl_cmdstream_freememontimestamp_ctxtid( |
| 2072 | struct kgsl_device_private *dev_priv, |
| 2073 | unsigned int cmd, void *data) |
| 2074 | { |
| 2075 | struct kgsl_cmdstream_freememontimestamp_ctxtid *param = data; |
| 2076 | struct kgsl_context *context = NULL; |
| 2077 | struct kgsl_mem_entry *entry; |
| 2078 | long ret = -EINVAL; |
| 2079 | |
| 2080 | if (param->type != KGSL_TIMESTAMP_RETIRED) |
| 2081 | return -EINVAL; |
| 2082 | |
| 2083 | context = kgsl_context_get_owner(dev_priv, param->context_id); |
| 2084 | if (context == NULL) |
| 2085 | return -EINVAL; |
| 2086 | |
| 2087 | entry = kgsl_sharedmem_find(dev_priv->process_priv, |
| 2088 | (uint64_t) param->gpuaddr); |
| 2089 | if (entry == NULL) { |
| 2090 | kgsl_context_put(context); |
| 2091 | return -EINVAL; |
| 2092 | } |
| 2093 | |
| 2094 | ret = gpumem_free_entry_on_timestamp(dev_priv->device, entry, |
| 2095 | context, param->timestamp); |
| 2096 | |
| 2097 | kgsl_mem_entry_put(entry); |
| 2098 | kgsl_context_put(context); |
| 2099 | |
| 2100 | return ret; |
| 2101 | } |
| 2102 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2103 | static int check_vma_flags(struct vm_area_struct *vma, |
| 2104 | unsigned int flags) |
| 2105 | { |
| 2106 | unsigned long flags_requested = (VM_READ | VM_WRITE); |
| 2107 | |
| 2108 | if (flags & KGSL_MEMFLAGS_GPUREADONLY) |
Lynus Vaz | eb7af68 | 2017-04-17 18:36:01 +0530 | [diff] [blame] | 2109 | flags_requested &= ~(unsigned long)VM_WRITE; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2110 | |
| 2111 | if ((vma->vm_flags & flags_requested) == flags_requested) |
| 2112 | return 0; |
| 2113 | |
| 2114 | return -EFAULT; |
| 2115 | } |
| 2116 | |
Jordan Crouse | 9ea6cad | 2020-09-24 09:05:53 -0600 | [diff] [blame] | 2117 | static int check_vma(unsigned long hostptr, u64 size) |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2118 | { |
Jordan Crouse | 9ea6cad | 2020-09-24 09:05:53 -0600 | [diff] [blame] | 2119 | struct vm_area_struct *vma; |
| 2120 | unsigned long cur = hostptr; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2121 | |
Jordan Crouse | 9ea6cad | 2020-09-24 09:05:53 -0600 | [diff] [blame] | 2122 | while (cur < (hostptr + size)) { |
| 2123 | vma = find_vma(current->mm, cur); |
| 2124 | if (!vma) |
| 2125 | return false; |
| 2126 | |
| 2127 | /* Don't remap memory that we already own */ |
| 2128 | if (vma->vm_file && vma->vm_file->f_op == &kgsl_fops) |
| 2129 | return false; |
| 2130 | |
| 2131 | cur = vma->vm_end; |
| 2132 | } |
| 2133 | |
| 2134 | return true; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2135 | } |
| 2136 | |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 2137 | static int memdesc_sg_virt(struct kgsl_memdesc *memdesc, unsigned long useraddr) |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2138 | { |
| 2139 | int ret = 0; |
| 2140 | long npages = 0, i; |
| 2141 | size_t sglen = (size_t) (memdesc->size / PAGE_SIZE); |
| 2142 | struct page **pages = NULL; |
| 2143 | int write = ((memdesc->flags & KGSL_MEMFLAGS_GPUREADONLY) ? 0 : |
| 2144 | FOLL_WRITE); |
| 2145 | |
| 2146 | if (sglen == 0 || sglen >= LONG_MAX) |
| 2147 | return -EINVAL; |
| 2148 | |
| 2149 | pages = kgsl_malloc(sglen * sizeof(struct page *)); |
| 2150 | if (pages == NULL) |
| 2151 | return -ENOMEM; |
| 2152 | |
| 2153 | memdesc->sgt = kmalloc(sizeof(struct sg_table), GFP_KERNEL); |
| 2154 | if (memdesc->sgt == NULL) { |
| 2155 | ret = -ENOMEM; |
| 2156 | goto out; |
| 2157 | } |
| 2158 | |
| 2159 | down_read(¤t->mm->mmap_sem); |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 2160 | if (!check_vma(useraddr, memdesc->size)) { |
Jordan Crouse | 9ea6cad | 2020-09-24 09:05:53 -0600 | [diff] [blame] | 2161 | up_read(¤t->mm->mmap_sem); |
| 2162 | ret = -EFAULT; |
| 2163 | goto out; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2164 | } |
Jordan Crouse | 9ea6cad | 2020-09-24 09:05:53 -0600 | [diff] [blame] | 2165 | |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 2166 | npages = get_user_pages(useraddr, |
Jordan Crouse | 9ea6cad | 2020-09-24 09:05:53 -0600 | [diff] [blame] | 2167 | sglen, write, pages, NULL); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2168 | up_read(¤t->mm->mmap_sem); |
| 2169 | |
Jordan Crouse | 9ea6cad | 2020-09-24 09:05:53 -0600 | [diff] [blame] | 2170 | ret = (npages < 0) ? (int)npages : 0; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2171 | if (ret) |
| 2172 | goto out; |
| 2173 | |
| 2174 | if ((unsigned long) npages != sglen) { |
| 2175 | ret = -EINVAL; |
| 2176 | goto out; |
| 2177 | } |
| 2178 | |
| 2179 | ret = sg_alloc_table_from_pages(memdesc->sgt, pages, npages, |
| 2180 | 0, memdesc->size, GFP_KERNEL); |
| 2181 | out: |
| 2182 | if (ret) { |
| 2183 | for (i = 0; i < npages; i++) |
| 2184 | put_page(pages[i]); |
| 2185 | |
| 2186 | kfree(memdesc->sgt); |
| 2187 | memdesc->sgt = NULL; |
| 2188 | } |
| 2189 | kgsl_free(pages); |
| 2190 | return ret; |
| 2191 | } |
| 2192 | |
| 2193 | static int kgsl_setup_anon_useraddr(struct kgsl_pagetable *pagetable, |
| 2194 | struct kgsl_mem_entry *entry, unsigned long hostptr, |
| 2195 | size_t offset, size_t size) |
| 2196 | { |
| 2197 | /* Map an anonymous memory chunk */ |
| 2198 | |
Neeraja P | b835067 | 2021-01-07 20:48:09 +0530 | [diff] [blame] | 2199 | int ret; |
| 2200 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2201 | if (size == 0 || offset != 0 || |
| 2202 | !IS_ALIGNED(size, PAGE_SIZE)) |
| 2203 | return -EINVAL; |
| 2204 | |
| 2205 | entry->memdesc.pagetable = pagetable; |
| 2206 | entry->memdesc.size = (uint64_t) size; |
Lynus Vaz | eb7af68 | 2017-04-17 18:36:01 +0530 | [diff] [blame] | 2207 | entry->memdesc.flags |= (uint64_t)KGSL_MEMFLAGS_USERMEM_ADDR; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2208 | |
| 2209 | if (kgsl_memdesc_use_cpu_map(&entry->memdesc)) { |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2210 | |
| 2211 | /* Register the address in the database */ |
| 2212 | ret = kgsl_mmu_set_svm_region(pagetable, |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 2213 | (uint64_t) hostptr, (uint64_t) size); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2214 | |
| 2215 | if (ret) |
| 2216 | return ret; |
| 2217 | |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 2218 | entry->memdesc.gpuaddr = (uint64_t) hostptr; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2219 | } |
| 2220 | |
Neeraja P | b835067 | 2021-01-07 20:48:09 +0530 | [diff] [blame] | 2221 | ret = memdesc_sg_virt(&entry->memdesc, hostptr); |
| 2222 | |
| 2223 | if (ret && kgsl_memdesc_use_cpu_map(&entry->memdesc)) |
| 2224 | kgsl_mmu_put_gpuaddr(&entry->memdesc); |
| 2225 | |
| 2226 | return ret; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2227 | } |
| 2228 | |
| 2229 | #ifdef CONFIG_DMA_SHARED_BUFFER |
| 2230 | static int match_file(const void *p, struct file *file, unsigned int fd) |
| 2231 | { |
| 2232 | /* |
| 2233 | * We must return fd + 1 because iterate_fd stops searching on |
| 2234 | * non-zero return, but 0 is a valid fd. |
| 2235 | */ |
| 2236 | return (p == file) ? (fd + 1) : 0; |
| 2237 | } |
| 2238 | |
| 2239 | static void _setup_cache_mode(struct kgsl_mem_entry *entry, |
| 2240 | struct vm_area_struct *vma) |
| 2241 | { |
Lynus Vaz | eb7af68 | 2017-04-17 18:36:01 +0530 | [diff] [blame] | 2242 | uint64_t mode; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2243 | pgprot_t pgprot = vma->vm_page_prot; |
| 2244 | |
| 2245 | if (pgprot_val(pgprot) == pgprot_val(pgprot_noncached(pgprot))) |
| 2246 | mode = KGSL_CACHEMODE_UNCACHED; |
| 2247 | else if (pgprot_val(pgprot) == pgprot_val(pgprot_writecombine(pgprot))) |
| 2248 | mode = KGSL_CACHEMODE_WRITECOMBINE; |
| 2249 | else |
| 2250 | mode = KGSL_CACHEMODE_WRITEBACK; |
| 2251 | |
| 2252 | entry->memdesc.flags |= (mode << KGSL_CACHEMODE_SHIFT); |
| 2253 | } |
| 2254 | |
| 2255 | static int kgsl_setup_dma_buf(struct kgsl_device *device, |
| 2256 | struct kgsl_pagetable *pagetable, |
| 2257 | struct kgsl_mem_entry *entry, |
| 2258 | struct dma_buf *dmabuf); |
| 2259 | |
| 2260 | static int kgsl_setup_dmabuf_useraddr(struct kgsl_device *device, |
| 2261 | struct kgsl_pagetable *pagetable, |
| 2262 | struct kgsl_mem_entry *entry, unsigned long hostptr) |
| 2263 | { |
| 2264 | struct vm_area_struct *vma; |
| 2265 | struct dma_buf *dmabuf = NULL; |
| 2266 | int ret; |
| 2267 | |
| 2268 | /* |
| 2269 | * Find the VMA containing this pointer and figure out if it |
| 2270 | * is a dma-buf. |
| 2271 | */ |
| 2272 | down_read(¤t->mm->mmap_sem); |
| 2273 | vma = find_vma(current->mm, hostptr); |
| 2274 | |
| 2275 | if (vma && vma->vm_file) { |
| 2276 | int fd; |
| 2277 | |
| 2278 | ret = check_vma_flags(vma, entry->memdesc.flags); |
| 2279 | if (ret) { |
| 2280 | up_read(¤t->mm->mmap_sem); |
| 2281 | return ret; |
| 2282 | } |
| 2283 | |
| 2284 | /* |
| 2285 | * Check to see that this isn't our own memory that we have |
| 2286 | * already mapped |
| 2287 | */ |
| 2288 | if (vma->vm_file->f_op == &kgsl_fops) { |
| 2289 | up_read(¤t->mm->mmap_sem); |
| 2290 | return -EFAULT; |
| 2291 | } |
| 2292 | |
| 2293 | /* Look for the fd that matches this the vma file */ |
| 2294 | fd = iterate_fd(current->files, 0, match_file, vma->vm_file); |
| 2295 | if (fd != 0) |
| 2296 | dmabuf = dma_buf_get(fd - 1); |
| 2297 | } |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2298 | |
Sunil Khatri | 51a7937 | 2017-07-06 15:09:35 +0530 | [diff] [blame] | 2299 | if (IS_ERR_OR_NULL(dmabuf)) { |
| 2300 | up_read(¤t->mm->mmap_sem); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2301 | return dmabuf ? PTR_ERR(dmabuf) : -ENODEV; |
Sunil Khatri | 51a7937 | 2017-07-06 15:09:35 +0530 | [diff] [blame] | 2302 | } |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2303 | |
| 2304 | ret = kgsl_setup_dma_buf(device, pagetable, entry, dmabuf); |
| 2305 | if (ret) { |
| 2306 | dma_buf_put(dmabuf); |
Sunil Khatri | 51a7937 | 2017-07-06 15:09:35 +0530 | [diff] [blame] | 2307 | up_read(¤t->mm->mmap_sem); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2308 | return ret; |
| 2309 | } |
| 2310 | |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 2311 | /* Setup the cache mode for cache operations */ |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2312 | _setup_cache_mode(entry, vma); |
Sunil Khatri | 51a7937 | 2017-07-06 15:09:35 +0530 | [diff] [blame] | 2313 | up_read(¤t->mm->mmap_sem); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2314 | return 0; |
| 2315 | } |
| 2316 | #else |
| 2317 | static int kgsl_setup_dmabuf_useraddr(struct kgsl_device *device, |
| 2318 | struct kgsl_pagetable *pagetable, |
| 2319 | struct kgsl_mem_entry *entry, unsigned long hostptr) |
| 2320 | { |
| 2321 | return -ENODEV; |
| 2322 | } |
| 2323 | #endif |
| 2324 | |
| 2325 | static int kgsl_setup_useraddr(struct kgsl_device *device, |
| 2326 | struct kgsl_pagetable *pagetable, |
| 2327 | struct kgsl_mem_entry *entry, |
| 2328 | unsigned long hostptr, size_t offset, size_t size) |
| 2329 | { |
| 2330 | int ret; |
| 2331 | |
| 2332 | if (hostptr == 0 || !IS_ALIGNED(hostptr, PAGE_SIZE)) |
| 2333 | return -EINVAL; |
| 2334 | |
| 2335 | /* Try to set up a dmabuf - if it returns -ENODEV assume anonymous */ |
| 2336 | ret = kgsl_setup_dmabuf_useraddr(device, pagetable, entry, hostptr); |
| 2337 | if (ret != -ENODEV) |
| 2338 | return ret; |
| 2339 | |
| 2340 | /* Okay - lets go legacy */ |
| 2341 | return kgsl_setup_anon_useraddr(pagetable, entry, |
| 2342 | hostptr, offset, size); |
| 2343 | } |
| 2344 | |
| 2345 | static long _gpuobj_map_useraddr(struct kgsl_device *device, |
| 2346 | struct kgsl_pagetable *pagetable, |
| 2347 | struct kgsl_mem_entry *entry, |
| 2348 | struct kgsl_gpuobj_import *param) |
| 2349 | { |
Archana Obannagari | ce60fec | 2017-09-08 20:35:28 +0530 | [diff] [blame] | 2350 | struct kgsl_gpuobj_import_useraddr useraddr = {0}; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2351 | int ret; |
| 2352 | |
| 2353 | param->flags &= KGSL_MEMFLAGS_GPUREADONLY |
| 2354 | | KGSL_CACHEMODE_MASK |
| 2355 | | KGSL_MEMTYPE_MASK |
Shrenuj Bansal | 4fd6a56 | 2017-08-07 15:12:54 -0700 | [diff] [blame] | 2356 | | KGSL_MEMFLAGS_FORCE_32BIT |
| 2357 | | KGSL_MEMFLAGS_IOCOHERENT; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2358 | |
| 2359 | /* Specifying SECURE is an explicit error */ |
| 2360 | if (param->flags & KGSL_MEMFLAGS_SECURE) |
| 2361 | return -ENOTSUPP; |
| 2362 | |
| 2363 | ret = _copy_from_user(&useraddr, |
| 2364 | to_user_ptr(param->priv), sizeof(useraddr), |
| 2365 | param->priv_len); |
| 2366 | if (ret) |
| 2367 | return ret; |
| 2368 | |
| 2369 | /* Verify that the virtaddr and len are within bounds */ |
| 2370 | if (useraddr.virtaddr > ULONG_MAX) |
| 2371 | return -EINVAL; |
| 2372 | |
| 2373 | return kgsl_setup_useraddr(device, pagetable, entry, |
| 2374 | (unsigned long) useraddr.virtaddr, 0, param->priv_len); |
| 2375 | } |
| 2376 | |
| 2377 | #ifdef CONFIG_DMA_SHARED_BUFFER |
| 2378 | static long _gpuobj_map_dma_buf(struct kgsl_device *device, |
| 2379 | struct kgsl_pagetable *pagetable, |
| 2380 | struct kgsl_mem_entry *entry, |
| 2381 | struct kgsl_gpuobj_import *param, |
| 2382 | int *fd) |
| 2383 | { |
| 2384 | struct kgsl_gpuobj_import_dma_buf buf; |
| 2385 | struct dma_buf *dmabuf; |
| 2386 | int ret; |
| 2387 | |
| 2388 | /* |
| 2389 | * If content protection is not enabled and secure buffer |
| 2390 | * is requested to be mapped return error. |
| 2391 | */ |
| 2392 | if (entry->memdesc.flags & KGSL_MEMFLAGS_SECURE) { |
| 2393 | if (!kgsl_mmu_is_secured(&device->mmu)) { |
| 2394 | dev_WARN_ONCE(device->dev, 1, |
| 2395 | "Secure buffer not supported"); |
| 2396 | return -ENOTSUPP; |
| 2397 | } |
| 2398 | |
| 2399 | entry->memdesc.priv |= KGSL_MEMDESC_SECURE; |
| 2400 | } |
| 2401 | |
| 2402 | ret = _copy_from_user(&buf, to_user_ptr(param->priv), |
| 2403 | sizeof(buf), param->priv_len); |
| 2404 | if (ret) |
| 2405 | return ret; |
| 2406 | |
| 2407 | if (buf.fd < 0) |
| 2408 | return -EINVAL; |
| 2409 | |
| 2410 | *fd = buf.fd; |
| 2411 | dmabuf = dma_buf_get(buf.fd); |
| 2412 | |
| 2413 | if (IS_ERR_OR_NULL(dmabuf)) |
| 2414 | return (dmabuf == NULL) ? -EINVAL : PTR_ERR(dmabuf); |
| 2415 | |
| 2416 | ret = kgsl_setup_dma_buf(device, pagetable, entry, dmabuf); |
| 2417 | if (ret) |
| 2418 | dma_buf_put(dmabuf); |
| 2419 | |
| 2420 | return ret; |
| 2421 | } |
| 2422 | #else |
| 2423 | static long _gpuobj_map_dma_buf(struct kgsl_device *device, |
| 2424 | struct kgsl_pagetable *pagetable, |
| 2425 | struct kgsl_mem_entry *entry, |
| 2426 | struct kgsl_gpuobj_import *param, |
| 2427 | int *fd) |
| 2428 | { |
| 2429 | return -EINVAL; |
| 2430 | } |
| 2431 | #endif |
| 2432 | |
| 2433 | long kgsl_ioctl_gpuobj_import(struct kgsl_device_private *dev_priv, |
| 2434 | unsigned int cmd, void *data) |
| 2435 | { |
| 2436 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 2437 | struct kgsl_gpuobj_import *param = data; |
| 2438 | struct kgsl_mem_entry *entry; |
| 2439 | int ret, fd = -1; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2440 | |
| 2441 | entry = kgsl_mem_entry_create(); |
| 2442 | if (entry == NULL) |
| 2443 | return -ENOMEM; |
| 2444 | |
| 2445 | param->flags &= KGSL_MEMFLAGS_GPUREADONLY |
| 2446 | | KGSL_MEMTYPE_MASK |
| 2447 | | KGSL_MEMALIGN_MASK |
| 2448 | | KGSL_MEMFLAGS_USE_CPU_MAP |
| 2449 | | KGSL_MEMFLAGS_SECURE |
Shrenuj Bansal | 4fd6a56 | 2017-08-07 15:12:54 -0700 | [diff] [blame] | 2450 | | KGSL_MEMFLAGS_FORCE_32BIT |
| 2451 | | KGSL_MEMFLAGS_IOCOHERENT; |
| 2452 | |
Deepak Kumar | cf056d1 | 2018-04-17 15:59:42 +0530 | [diff] [blame] | 2453 | if (kgsl_is_compat_task()) |
| 2454 | param->flags |= KGSL_MEMFLAGS_FORCE_32BIT; |
| 2455 | |
Lynus Vaz | 90d98b5 | 2018-04-09 14:45:36 +0530 | [diff] [blame] | 2456 | kgsl_memdesc_init(dev_priv->device, &entry->memdesc, param->flags); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2457 | if (param->type == KGSL_USER_MEM_TYPE_ADDR) |
| 2458 | ret = _gpuobj_map_useraddr(dev_priv->device, private->pagetable, |
| 2459 | entry, param); |
| 2460 | else if (param->type == KGSL_USER_MEM_TYPE_DMABUF) |
| 2461 | ret = _gpuobj_map_dma_buf(dev_priv->device, private->pagetable, |
| 2462 | entry, param, &fd); |
| 2463 | else |
| 2464 | ret = -ENOTSUPP; |
| 2465 | |
| 2466 | if (ret) |
| 2467 | goto out; |
| 2468 | |
| 2469 | if (entry->memdesc.size >= SZ_1M) |
| 2470 | kgsl_memdesc_set_align(&entry->memdesc, ilog2(SZ_1M)); |
| 2471 | else if (entry->memdesc.size >= SZ_64K) |
| 2472 | kgsl_memdesc_set_align(&entry->memdesc, ilog2(SZ_64K)); |
| 2473 | |
| 2474 | param->flags = entry->memdesc.flags; |
| 2475 | |
| 2476 | ret = kgsl_mem_entry_attach_process(dev_priv->device, private, entry); |
| 2477 | if (ret) |
| 2478 | goto unmap; |
| 2479 | |
| 2480 | param->id = entry->id; |
| 2481 | |
| 2482 | KGSL_STATS_ADD(entry->memdesc.size, &kgsl_driver.stats.mapped, |
| 2483 | &kgsl_driver.stats.mapped_max); |
| 2484 | |
| 2485 | kgsl_process_add_stats(private, |
| 2486 | kgsl_memdesc_usermem_type(&entry->memdesc), |
| 2487 | entry->memdesc.size); |
| 2488 | |
| 2489 | trace_kgsl_mem_map(entry, fd); |
| 2490 | |
| 2491 | kgsl_mem_entry_commit_process(entry); |
Tarun Karra | 24d3fe1 | 2017-04-05 15:23:03 -0700 | [diff] [blame] | 2492 | |
| 2493 | /* Put the extra ref from kgsl_mem_entry_create() */ |
| 2494 | kgsl_mem_entry_put(entry); |
| 2495 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2496 | return 0; |
| 2497 | |
| 2498 | unmap: |
Kamal Agrawal | 8f0fb82 | 2020-08-19 10:25:15 +0530 | [diff] [blame] | 2499 | if (kgsl_memdesc_usermem_type(&entry->memdesc) == KGSL_MEM_ENTRY_ION) { |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2500 | kgsl_destroy_ion(entry->priv_data); |
| 2501 | entry->memdesc.sgt = NULL; |
| 2502 | } |
| 2503 | |
| 2504 | kgsl_sharedmem_free(&entry->memdesc); |
| 2505 | |
| 2506 | out: |
| 2507 | kfree(entry); |
| 2508 | return ret; |
| 2509 | } |
| 2510 | |
| 2511 | static long _map_usermem_addr(struct kgsl_device *device, |
| 2512 | struct kgsl_pagetable *pagetable, struct kgsl_mem_entry *entry, |
| 2513 | unsigned long hostptr, size_t offset, size_t size) |
| 2514 | { |
| 2515 | if (!MMU_FEATURE(&device->mmu, KGSL_MMU_PAGED)) |
| 2516 | return -EINVAL; |
| 2517 | |
| 2518 | /* No CPU mapped buffer could ever be secure */ |
| 2519 | if (entry->memdesc.flags & KGSL_MEMFLAGS_SECURE) |
| 2520 | return -EINVAL; |
| 2521 | |
| 2522 | return kgsl_setup_useraddr(device, pagetable, entry, hostptr, |
| 2523 | offset, size); |
| 2524 | } |
| 2525 | |
| 2526 | #ifdef CONFIG_DMA_SHARED_BUFFER |
| 2527 | static int _map_usermem_dma_buf(struct kgsl_device *device, |
| 2528 | struct kgsl_pagetable *pagetable, |
| 2529 | struct kgsl_mem_entry *entry, |
| 2530 | unsigned int fd) |
| 2531 | { |
| 2532 | int ret; |
| 2533 | struct dma_buf *dmabuf; |
| 2534 | |
| 2535 | /* |
| 2536 | * If content protection is not enabled and secure buffer |
| 2537 | * is requested to be mapped return error. |
| 2538 | */ |
| 2539 | |
| 2540 | if (entry->memdesc.flags & KGSL_MEMFLAGS_SECURE) { |
| 2541 | if (!kgsl_mmu_is_secured(&device->mmu)) { |
| 2542 | dev_WARN_ONCE(device->dev, 1, |
| 2543 | "Secure buffer not supported"); |
| 2544 | return -EINVAL; |
| 2545 | } |
| 2546 | |
| 2547 | entry->memdesc.priv |= KGSL_MEMDESC_SECURE; |
| 2548 | } |
| 2549 | |
| 2550 | dmabuf = dma_buf_get(fd); |
| 2551 | if (IS_ERR_OR_NULL(dmabuf)) { |
| 2552 | ret = PTR_ERR(dmabuf); |
| 2553 | return ret ? ret : -EINVAL; |
| 2554 | } |
| 2555 | ret = kgsl_setup_dma_buf(device, pagetable, entry, dmabuf); |
| 2556 | if (ret) |
| 2557 | dma_buf_put(dmabuf); |
| 2558 | return ret; |
| 2559 | } |
| 2560 | #else |
| 2561 | static int _map_usermem_dma_buf(struct kgsl_device *device, |
| 2562 | struct kgsl_pagetable *pagetable, |
| 2563 | struct kgsl_mem_entry *entry, |
| 2564 | unsigned int fd) |
| 2565 | { |
| 2566 | return -EINVAL; |
| 2567 | } |
| 2568 | #endif |
| 2569 | |
| 2570 | #ifdef CONFIG_DMA_SHARED_BUFFER |
| 2571 | static int kgsl_setup_dma_buf(struct kgsl_device *device, |
| 2572 | struct kgsl_pagetable *pagetable, |
| 2573 | struct kgsl_mem_entry *entry, |
| 2574 | struct dma_buf *dmabuf) |
| 2575 | { |
| 2576 | int ret = 0; |
| 2577 | struct scatterlist *s; |
| 2578 | struct sg_table *sg_table; |
| 2579 | struct dma_buf_attachment *attach = NULL; |
| 2580 | struct kgsl_dma_buf_meta *meta; |
| 2581 | |
| 2582 | meta = kzalloc(sizeof(*meta), GFP_KERNEL); |
| 2583 | if (!meta) |
| 2584 | return -ENOMEM; |
| 2585 | |
| 2586 | attach = dma_buf_attach(dmabuf, device->dev); |
| 2587 | if (IS_ERR_OR_NULL(attach)) { |
| 2588 | ret = attach ? PTR_ERR(attach) : -EINVAL; |
| 2589 | goto out; |
| 2590 | } |
| 2591 | |
| 2592 | meta->dmabuf = dmabuf; |
| 2593 | meta->attach = attach; |
| 2594 | |
| 2595 | attach->priv = entry; |
| 2596 | |
| 2597 | entry->priv_data = meta; |
| 2598 | entry->memdesc.pagetable = pagetable; |
| 2599 | entry->memdesc.size = 0; |
| 2600 | /* USE_CPU_MAP is not impemented for ION. */ |
| 2601 | entry->memdesc.flags &= ~((uint64_t) KGSL_MEMFLAGS_USE_CPU_MAP); |
Lynus Vaz | eb7af68 | 2017-04-17 18:36:01 +0530 | [diff] [blame] | 2602 | entry->memdesc.flags |= (uint64_t)KGSL_MEMFLAGS_USERMEM_ION; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2603 | |
| 2604 | sg_table = dma_buf_map_attachment(attach, DMA_TO_DEVICE); |
| 2605 | |
| 2606 | if (IS_ERR_OR_NULL(sg_table)) { |
| 2607 | ret = PTR_ERR(sg_table); |
| 2608 | goto out; |
| 2609 | } |
| 2610 | |
| 2611 | meta->table = sg_table; |
| 2612 | entry->priv_data = meta; |
| 2613 | entry->memdesc.sgt = sg_table; |
| 2614 | |
| 2615 | /* Calculate the size of the memdesc from the sglist */ |
| 2616 | for (s = entry->memdesc.sgt->sgl; s != NULL; s = sg_next(s)) { |
| 2617 | int priv = (entry->memdesc.priv & KGSL_MEMDESC_SECURE) ? 1 : 0; |
| 2618 | |
| 2619 | /* |
| 2620 | * Check that each chunk of of the sg table matches the secure |
| 2621 | * flag. |
| 2622 | */ |
| 2623 | |
| 2624 | if (PagePrivate(sg_page(s)) != priv) { |
| 2625 | ret = -EPERM; |
| 2626 | goto out; |
| 2627 | } |
| 2628 | |
| 2629 | entry->memdesc.size += (uint64_t) s->length; |
| 2630 | } |
| 2631 | |
| 2632 | entry->memdesc.size = PAGE_ALIGN(entry->memdesc.size); |
| 2633 | |
| 2634 | out: |
| 2635 | if (ret) { |
| 2636 | if (!IS_ERR_OR_NULL(attach)) |
| 2637 | dma_buf_detach(dmabuf, attach); |
| 2638 | |
| 2639 | |
| 2640 | kfree(meta); |
| 2641 | } |
| 2642 | |
| 2643 | return ret; |
| 2644 | } |
| 2645 | #endif |
| 2646 | |
| 2647 | #ifdef CONFIG_DMA_SHARED_BUFFER |
| 2648 | void kgsl_get_egl_counts(struct kgsl_mem_entry *entry, |
| 2649 | int *egl_surface_count, int *egl_image_count) |
| 2650 | { |
| 2651 | struct kgsl_dma_buf_meta *meta = entry->priv_data; |
| 2652 | struct dma_buf *dmabuf = meta->dmabuf; |
| 2653 | struct dma_buf_attachment *mem_entry_buf_attachment = meta->attach; |
| 2654 | struct device *buf_attachment_dev = mem_entry_buf_attachment->dev; |
| 2655 | struct dma_buf_attachment *attachment = NULL; |
| 2656 | |
| 2657 | mutex_lock(&dmabuf->lock); |
| 2658 | list_for_each_entry(attachment, &dmabuf->attachments, node) { |
| 2659 | struct kgsl_mem_entry *scan_mem_entry = NULL; |
| 2660 | |
| 2661 | if (attachment->dev != buf_attachment_dev) |
| 2662 | continue; |
| 2663 | |
| 2664 | scan_mem_entry = attachment->priv; |
| 2665 | if (!scan_mem_entry) |
| 2666 | continue; |
| 2667 | |
| 2668 | switch (kgsl_memdesc_get_memtype(&scan_mem_entry->memdesc)) { |
| 2669 | case KGSL_MEMTYPE_EGL_SURFACE: |
| 2670 | (*egl_surface_count)++; |
| 2671 | break; |
| 2672 | case KGSL_MEMTYPE_EGL_IMAGE: |
| 2673 | (*egl_image_count)++; |
| 2674 | break; |
| 2675 | } |
| 2676 | } |
| 2677 | mutex_unlock(&dmabuf->lock); |
| 2678 | } |
| 2679 | #else |
| 2680 | void kgsl_get_egl_counts(struct kgsl_mem_entry *entry, |
| 2681 | int *egl_surface_count, int *egl_image_count) |
| 2682 | { |
| 2683 | } |
| 2684 | #endif |
| 2685 | |
| 2686 | long kgsl_ioctl_map_user_mem(struct kgsl_device_private *dev_priv, |
| 2687 | unsigned int cmd, void *data) |
| 2688 | { |
| 2689 | int result = -EINVAL; |
| 2690 | struct kgsl_map_user_mem *param = data; |
| 2691 | struct kgsl_mem_entry *entry = NULL; |
| 2692 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 2693 | struct kgsl_mmu *mmu = &dev_priv->device->mmu; |
| 2694 | unsigned int memtype; |
Lynus Vaz | 90d98b5 | 2018-04-09 14:45:36 +0530 | [diff] [blame] | 2695 | uint64_t flags; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2696 | |
| 2697 | /* |
| 2698 | * If content protection is not enabled and secure buffer |
| 2699 | * is requested to be mapped return error. |
| 2700 | */ |
| 2701 | |
| 2702 | if (param->flags & KGSL_MEMFLAGS_SECURE) { |
| 2703 | /* Log message and return if context protection isn't enabled */ |
| 2704 | if (!kgsl_mmu_is_secured(mmu)) { |
| 2705 | dev_WARN_ONCE(dev_priv->device->dev, 1, |
| 2706 | "Secure buffer not supported"); |
| 2707 | return -EOPNOTSUPP; |
| 2708 | } |
| 2709 | |
| 2710 | /* Can't use CPU map with secure buffers */ |
| 2711 | if (param->flags & KGSL_MEMFLAGS_USE_CPU_MAP) |
| 2712 | return -EINVAL; |
| 2713 | } |
| 2714 | |
| 2715 | entry = kgsl_mem_entry_create(); |
| 2716 | |
| 2717 | if (entry == NULL) |
| 2718 | return -ENOMEM; |
| 2719 | |
| 2720 | /* |
| 2721 | * Convert from enum value to KGSL_MEM_ENTRY value, so that |
| 2722 | * we can use the latter consistently everywhere. |
| 2723 | */ |
| 2724 | memtype = param->memtype + 1; |
| 2725 | |
| 2726 | /* |
| 2727 | * Mask off unknown flags from userspace. This way the caller can |
| 2728 | * check if a flag is supported by looking at the returned flags. |
| 2729 | * Note: CACHEMODE is ignored for this call. Caching should be |
| 2730 | * determined by type of allocation being mapped. |
| 2731 | */ |
Lynus Vaz | 90d98b5 | 2018-04-09 14:45:36 +0530 | [diff] [blame] | 2732 | flags = param->flags & (KGSL_MEMFLAGS_GPUREADONLY |
| 2733 | | KGSL_MEMTYPE_MASK |
| 2734 | | KGSL_MEMALIGN_MASK |
| 2735 | | KGSL_MEMFLAGS_USE_CPU_MAP |
| 2736 | | KGSL_MEMFLAGS_SECURE |
| 2737 | | KGSL_MEMFLAGS_IOCOHERENT); |
Deepak Kumar | cf056d1 | 2018-04-17 15:59:42 +0530 | [diff] [blame] | 2738 | |
| 2739 | if (kgsl_is_compat_task()) |
Lynus Vaz | 90d98b5 | 2018-04-09 14:45:36 +0530 | [diff] [blame] | 2740 | flags |= KGSL_MEMFLAGS_FORCE_32BIT; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2741 | |
Lynus Vaz | 90d98b5 | 2018-04-09 14:45:36 +0530 | [diff] [blame] | 2742 | kgsl_memdesc_init(dev_priv->device, &entry->memdesc, flags); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2743 | |
| 2744 | switch (memtype) { |
| 2745 | case KGSL_MEM_ENTRY_USER: |
| 2746 | result = _map_usermem_addr(dev_priv->device, private->pagetable, |
| 2747 | entry, param->hostptr, param->offset, param->len); |
| 2748 | break; |
| 2749 | case KGSL_MEM_ENTRY_ION: |
| 2750 | if (param->offset != 0) |
| 2751 | result = -EINVAL; |
| 2752 | else |
| 2753 | result = _map_usermem_dma_buf(dev_priv->device, |
| 2754 | private->pagetable, entry, param->fd); |
| 2755 | break; |
| 2756 | default: |
| 2757 | result = -EOPNOTSUPP; |
| 2758 | break; |
| 2759 | } |
| 2760 | |
| 2761 | if (result) |
| 2762 | goto error; |
| 2763 | |
| 2764 | if ((param->flags & KGSL_MEMFLAGS_SECURE) && |
| 2765 | (entry->memdesc.size & mmu->secure_align_mask)) { |
| 2766 | result = -EINVAL; |
| 2767 | goto error_attach; |
| 2768 | } |
| 2769 | |
| 2770 | if (entry->memdesc.size >= SZ_2M) |
| 2771 | kgsl_memdesc_set_align(&entry->memdesc, ilog2(SZ_2M)); |
| 2772 | else if (entry->memdesc.size >= SZ_1M) |
| 2773 | kgsl_memdesc_set_align(&entry->memdesc, ilog2(SZ_1M)); |
| 2774 | else if (entry->memdesc.size >= SZ_64K) |
| 2775 | kgsl_memdesc_set_align(&entry->memdesc, ilog2(SZ_64)); |
| 2776 | |
| 2777 | /* echo back flags */ |
| 2778 | param->flags = (unsigned int) entry->memdesc.flags; |
| 2779 | |
| 2780 | result = kgsl_mem_entry_attach_process(dev_priv->device, private, |
| 2781 | entry); |
| 2782 | if (result) |
| 2783 | goto error_attach; |
| 2784 | |
| 2785 | /* Adjust the returned value for a non 4k aligned offset */ |
| 2786 | param->gpuaddr = (unsigned long) |
| 2787 | entry->memdesc.gpuaddr + (param->offset & PAGE_MASK); |
| 2788 | |
| 2789 | KGSL_STATS_ADD(param->len, &kgsl_driver.stats.mapped, |
| 2790 | &kgsl_driver.stats.mapped_max); |
| 2791 | |
| 2792 | kgsl_process_add_stats(private, |
| 2793 | kgsl_memdesc_usermem_type(&entry->memdesc), param->len); |
| 2794 | |
| 2795 | trace_kgsl_mem_map(entry, param->fd); |
| 2796 | |
| 2797 | kgsl_mem_entry_commit_process(entry); |
Tarun Karra | 24d3fe1 | 2017-04-05 15:23:03 -0700 | [diff] [blame] | 2798 | |
| 2799 | /* Put the extra ref from kgsl_mem_entry_create() */ |
| 2800 | kgsl_mem_entry_put(entry); |
| 2801 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2802 | return result; |
| 2803 | |
| 2804 | error_attach: |
Kamal Agrawal | 8f0fb82 | 2020-08-19 10:25:15 +0530 | [diff] [blame] | 2805 | switch (kgsl_memdesc_usermem_type(&entry->memdesc)) { |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2806 | case KGSL_MEM_ENTRY_ION: |
| 2807 | kgsl_destroy_ion(entry->priv_data); |
| 2808 | entry->memdesc.sgt = NULL; |
| 2809 | break; |
| 2810 | default: |
| 2811 | break; |
| 2812 | } |
| 2813 | kgsl_sharedmem_free(&entry->memdesc); |
| 2814 | error: |
| 2815 | /* Clear gpuaddr here so userspace doesn't get any wrong ideas */ |
| 2816 | param->gpuaddr = 0; |
| 2817 | |
| 2818 | kfree(entry); |
| 2819 | return result; |
| 2820 | } |
| 2821 | |
| 2822 | static int _kgsl_gpumem_sync_cache(struct kgsl_mem_entry *entry, |
| 2823 | uint64_t offset, uint64_t length, unsigned int op) |
| 2824 | { |
| 2825 | int ret = 0; |
| 2826 | int cacheop; |
| 2827 | int mode; |
| 2828 | |
Akhil P Oommen | 4323d4ca | 2017-06-21 12:54:18 +0530 | [diff] [blame] | 2829 | /* Cache ops are not allowed on secure memory */ |
| 2830 | if (entry->memdesc.flags & KGSL_MEMFLAGS_SECURE) |
| 2831 | return 0; |
| 2832 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2833 | /* |
| 2834 | * Flush is defined as (clean | invalidate). If both bits are set, then |
| 2835 | * do a flush, otherwise check for the individual bits and clean or inv |
| 2836 | * as requested |
| 2837 | */ |
| 2838 | |
| 2839 | if ((op & KGSL_GPUMEM_CACHE_FLUSH) == KGSL_GPUMEM_CACHE_FLUSH) |
| 2840 | cacheop = KGSL_CACHE_OP_FLUSH; |
| 2841 | else if (op & KGSL_GPUMEM_CACHE_CLEAN) |
| 2842 | cacheop = KGSL_CACHE_OP_CLEAN; |
| 2843 | else if (op & KGSL_GPUMEM_CACHE_INV) |
| 2844 | cacheop = KGSL_CACHE_OP_INV; |
| 2845 | else { |
| 2846 | ret = -EINVAL; |
| 2847 | goto done; |
| 2848 | } |
| 2849 | |
| 2850 | if (!(op & KGSL_GPUMEM_CACHE_RANGE)) { |
| 2851 | offset = 0; |
| 2852 | length = entry->memdesc.size; |
| 2853 | } |
| 2854 | |
| 2855 | mode = kgsl_memdesc_get_cachemode(&entry->memdesc); |
| 2856 | if (mode != KGSL_CACHEMODE_UNCACHED |
| 2857 | && mode != KGSL_CACHEMODE_WRITECOMBINE) { |
| 2858 | trace_kgsl_mem_sync_cache(entry, offset, length, op); |
| 2859 | ret = kgsl_cache_range_op(&entry->memdesc, offset, |
| 2860 | length, cacheop); |
| 2861 | } |
| 2862 | |
| 2863 | done: |
| 2864 | return ret; |
| 2865 | } |
| 2866 | |
| 2867 | /* New cache sync function - supports both directions (clean and invalidate) */ |
| 2868 | |
| 2869 | long kgsl_ioctl_gpumem_sync_cache(struct kgsl_device_private *dev_priv, |
| 2870 | unsigned int cmd, void *data) |
| 2871 | { |
| 2872 | struct kgsl_gpumem_sync_cache *param = data; |
| 2873 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 2874 | struct kgsl_mem_entry *entry = NULL; |
| 2875 | long ret; |
| 2876 | |
| 2877 | if (param->id != 0) |
| 2878 | entry = kgsl_sharedmem_find_id(private, param->id); |
| 2879 | else if (param->gpuaddr != 0) |
| 2880 | entry = kgsl_sharedmem_find(private, (uint64_t) param->gpuaddr); |
| 2881 | |
| 2882 | if (entry == NULL) |
| 2883 | return -EINVAL; |
| 2884 | |
| 2885 | ret = _kgsl_gpumem_sync_cache(entry, (uint64_t) param->offset, |
| 2886 | (uint64_t) param->length, param->op); |
| 2887 | kgsl_mem_entry_put(entry); |
| 2888 | return ret; |
| 2889 | } |
| 2890 | |
| 2891 | static int mem_id_cmp(const void *_a, const void *_b) |
| 2892 | { |
| 2893 | const unsigned int *a = _a, *b = _b; |
| 2894 | |
| 2895 | if (*a == *b) |
| 2896 | return 0; |
| 2897 | return (*a > *b) ? 1 : -1; |
| 2898 | } |
| 2899 | |
| 2900 | #ifdef CONFIG_ARM64 |
| 2901 | /* Do not support full flush on ARM64 targets */ |
| 2902 | static inline bool check_full_flush(size_t size, int op) |
| 2903 | { |
| 2904 | return false; |
| 2905 | } |
| 2906 | #else |
| 2907 | /* Support full flush if the size is bigger than the threshold */ |
| 2908 | static inline bool check_full_flush(size_t size, int op) |
| 2909 | { |
| 2910 | /* If we exceed the breakeven point, flush the entire cache */ |
| 2911 | bool ret = (kgsl_driver.full_cache_threshold != 0) && |
| 2912 | (size >= kgsl_driver.full_cache_threshold) && |
| 2913 | (op == KGSL_GPUMEM_CACHE_FLUSH); |
Maria Yu | ceafc60 | 2017-09-26 15:45:02 +0800 | [diff] [blame] | 2914 | if (ret) |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2915 | flush_cache_all(); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2916 | return ret; |
| 2917 | } |
| 2918 | #endif |
| 2919 | |
| 2920 | long kgsl_ioctl_gpumem_sync_cache_bulk(struct kgsl_device_private *dev_priv, |
| 2921 | unsigned int cmd, void *data) |
| 2922 | { |
| 2923 | int i; |
| 2924 | struct kgsl_gpumem_sync_cache_bulk *param = data; |
| 2925 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 2926 | unsigned int id, last_id = 0, *id_list = NULL, actual_count = 0; |
| 2927 | struct kgsl_mem_entry **entries = NULL; |
| 2928 | long ret = 0; |
| 2929 | uint64_t op_size = 0; |
| 2930 | bool full_flush = false; |
| 2931 | |
| 2932 | if (param->id_list == NULL || param->count == 0 |
| 2933 | || param->count > (PAGE_SIZE / sizeof(unsigned int))) |
| 2934 | return -EINVAL; |
| 2935 | |
| 2936 | id_list = kcalloc(param->count, sizeof(unsigned int), GFP_KERNEL); |
| 2937 | if (id_list == NULL) |
| 2938 | return -ENOMEM; |
| 2939 | |
| 2940 | entries = kcalloc(param->count, sizeof(*entries), GFP_KERNEL); |
| 2941 | if (entries == NULL) { |
| 2942 | ret = -ENOMEM; |
| 2943 | goto end; |
| 2944 | } |
| 2945 | |
| 2946 | if (copy_from_user(id_list, param->id_list, |
| 2947 | param->count * sizeof(unsigned int))) { |
| 2948 | ret = -EFAULT; |
| 2949 | goto end; |
| 2950 | } |
| 2951 | /* sort the ids so we can weed out duplicates */ |
| 2952 | sort(id_list, param->count, sizeof(*id_list), mem_id_cmp, NULL); |
| 2953 | |
| 2954 | for (i = 0; i < param->count; i++) { |
| 2955 | unsigned int cachemode; |
| 2956 | struct kgsl_mem_entry *entry = NULL; |
| 2957 | |
| 2958 | id = id_list[i]; |
| 2959 | /* skip 0 ids or duplicates */ |
| 2960 | if (id == last_id) |
| 2961 | continue; |
| 2962 | |
| 2963 | entry = kgsl_sharedmem_find_id(private, id); |
| 2964 | if (entry == NULL) |
| 2965 | continue; |
| 2966 | |
| 2967 | /* skip uncached memory */ |
| 2968 | cachemode = kgsl_memdesc_get_cachemode(&entry->memdesc); |
| 2969 | if (cachemode != KGSL_CACHEMODE_WRITETHROUGH && |
| 2970 | cachemode != KGSL_CACHEMODE_WRITEBACK) { |
| 2971 | kgsl_mem_entry_put(entry); |
| 2972 | continue; |
| 2973 | } |
| 2974 | |
| 2975 | op_size += entry->memdesc.size; |
| 2976 | entries[actual_count++] = entry; |
| 2977 | |
| 2978 | full_flush = check_full_flush(op_size, param->op); |
Maria Yu | ceafc60 | 2017-09-26 15:45:02 +0800 | [diff] [blame] | 2979 | if (full_flush) { |
| 2980 | trace_kgsl_mem_sync_full_cache(actual_count, op_size); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2981 | break; |
Maria Yu | ceafc60 | 2017-09-26 15:45:02 +0800 | [diff] [blame] | 2982 | } |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2983 | |
| 2984 | last_id = id; |
| 2985 | } |
| 2986 | |
| 2987 | param->op &= ~KGSL_GPUMEM_CACHE_RANGE; |
| 2988 | |
| 2989 | for (i = 0; i < actual_count; i++) { |
| 2990 | if (!full_flush) |
| 2991 | _kgsl_gpumem_sync_cache(entries[i], 0, |
| 2992 | entries[i]->memdesc.size, |
| 2993 | param->op); |
| 2994 | kgsl_mem_entry_put(entries[i]); |
| 2995 | } |
| 2996 | end: |
| 2997 | kfree(entries); |
| 2998 | kfree(id_list); |
| 2999 | return ret; |
| 3000 | } |
| 3001 | |
| 3002 | /* Legacy cache function, does a flush (clean + invalidate) */ |
| 3003 | |
| 3004 | long kgsl_ioctl_sharedmem_flush_cache(struct kgsl_device_private *dev_priv, |
| 3005 | unsigned int cmd, void *data) |
| 3006 | { |
| 3007 | struct kgsl_sharedmem_free *param = data; |
| 3008 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 3009 | struct kgsl_mem_entry *entry = NULL; |
| 3010 | long ret; |
| 3011 | |
| 3012 | entry = kgsl_sharedmem_find(private, (uint64_t) param->gpuaddr); |
| 3013 | if (entry == NULL) |
| 3014 | return -EINVAL; |
| 3015 | |
| 3016 | ret = _kgsl_gpumem_sync_cache(entry, 0, entry->memdesc.size, |
| 3017 | KGSL_GPUMEM_CACHE_FLUSH); |
| 3018 | kgsl_mem_entry_put(entry); |
| 3019 | return ret; |
| 3020 | } |
| 3021 | |
| 3022 | long kgsl_ioctl_gpuobj_sync(struct kgsl_device_private *dev_priv, |
| 3023 | unsigned int cmd, void *data) |
| 3024 | { |
| 3025 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 3026 | struct kgsl_gpuobj_sync *param = data; |
| 3027 | struct kgsl_gpuobj_sync_obj *objs; |
| 3028 | struct kgsl_mem_entry **entries; |
| 3029 | long ret = 0; |
| 3030 | bool full_flush = false; |
| 3031 | uint64_t size = 0; |
Carter Cooper | 69355b8 | 2018-01-17 09:49:00 -0700 | [diff] [blame] | 3032 | int i; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3033 | void __user *ptr; |
| 3034 | |
| 3035 | if (param->count == 0 || param->count > 128) |
| 3036 | return -EINVAL; |
| 3037 | |
| 3038 | objs = kcalloc(param->count, sizeof(*objs), GFP_KERNEL); |
| 3039 | if (objs == NULL) |
| 3040 | return -ENOMEM; |
| 3041 | |
| 3042 | entries = kcalloc(param->count, sizeof(*entries), GFP_KERNEL); |
| 3043 | if (entries == NULL) { |
Carter Cooper | 69355b8 | 2018-01-17 09:49:00 -0700 | [diff] [blame] | 3044 | kfree(objs); |
| 3045 | return -ENOMEM; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3046 | } |
| 3047 | |
| 3048 | ptr = to_user_ptr(param->objs); |
| 3049 | |
| 3050 | for (i = 0; i < param->count; i++) { |
| 3051 | ret = _copy_from_user(&objs[i], ptr, sizeof(*objs), |
| 3052 | param->obj_len); |
| 3053 | if (ret) |
| 3054 | goto out; |
| 3055 | |
| 3056 | entries[i] = kgsl_sharedmem_find_id(private, objs[i].id); |
| 3057 | |
| 3058 | /* Not finding the ID is not a fatal failure - just skip it */ |
| 3059 | if (entries[i] == NULL) |
| 3060 | continue; |
| 3061 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3062 | if (!(objs[i].op & KGSL_GPUMEM_CACHE_RANGE)) |
| 3063 | size += entries[i]->memdesc.size; |
| 3064 | else if (objs[i].offset < entries[i]->memdesc.size) |
| 3065 | size += (entries[i]->memdesc.size - objs[i].offset); |
| 3066 | |
| 3067 | full_flush = check_full_flush(size, objs[i].op); |
Maria Yu | ceafc60 | 2017-09-26 15:45:02 +0800 | [diff] [blame] | 3068 | if (full_flush) { |
| 3069 | trace_kgsl_mem_sync_full_cache(i, size); |
Carter Cooper | 69355b8 | 2018-01-17 09:49:00 -0700 | [diff] [blame] | 3070 | goto out; |
Maria Yu | ceafc60 | 2017-09-26 15:45:02 +0800 | [diff] [blame] | 3071 | } |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3072 | |
| 3073 | ptr += sizeof(*objs); |
| 3074 | } |
| 3075 | |
Carter Cooper | 69355b8 | 2018-01-17 09:49:00 -0700 | [diff] [blame] | 3076 | for (i = 0; !ret && i < param->count; i++) |
| 3077 | if (entries[i]) |
| 3078 | ret = _kgsl_gpumem_sync_cache(entries[i], |
| 3079 | objs[i].offset, objs[i].length, |
| 3080 | objs[i].op); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3081 | |
Carter Cooper | 69355b8 | 2018-01-17 09:49:00 -0700 | [diff] [blame] | 3082 | out: |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3083 | for (i = 0; i < param->count; i++) |
| 3084 | if (entries[i]) |
| 3085 | kgsl_mem_entry_put(entries[i]); |
| 3086 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3087 | kfree(entries); |
| 3088 | kfree(objs); |
| 3089 | |
| 3090 | return ret; |
| 3091 | } |
| 3092 | |
| 3093 | #ifdef CONFIG_ARM64 |
| 3094 | static uint64_t kgsl_filter_cachemode(uint64_t flags) |
| 3095 | { |
| 3096 | /* |
| 3097 | * WRITETHROUGH is not supported in arm64, so we tell the user that we |
| 3098 | * use WRITEBACK which is the default caching policy. |
| 3099 | */ |
| 3100 | if ((flags & KGSL_CACHEMODE_MASK) >> KGSL_CACHEMODE_SHIFT == |
| 3101 | KGSL_CACHEMODE_WRITETHROUGH) { |
| 3102 | flags &= ~((uint64_t) KGSL_CACHEMODE_MASK); |
Lynus Vaz | eb7af68 | 2017-04-17 18:36:01 +0530 | [diff] [blame] | 3103 | flags |= (uint64_t)((KGSL_CACHEMODE_WRITEBACK << |
| 3104 | KGSL_CACHEMODE_SHIFT) & |
| 3105 | KGSL_CACHEMODE_MASK); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3106 | } |
| 3107 | return flags; |
| 3108 | } |
| 3109 | #else |
| 3110 | static uint64_t kgsl_filter_cachemode(uint64_t flags) |
| 3111 | { |
| 3112 | return flags; |
| 3113 | } |
| 3114 | #endif |
| 3115 | |
| 3116 | /* The largest allowable alignment for a GPU object is 32MB */ |
| 3117 | #define KGSL_MAX_ALIGN (32 * SZ_1M) |
| 3118 | |
Harshdeep Dhatt | 2e42f12 | 2017-05-31 17:27:19 -0600 | [diff] [blame] | 3119 | struct kgsl_mem_entry *gpumem_alloc_entry( |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3120 | struct kgsl_device_private *dev_priv, |
| 3121 | uint64_t size, uint64_t flags) |
| 3122 | { |
| 3123 | int ret; |
| 3124 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 3125 | struct kgsl_mem_entry *entry; |
Shrenuj Bansal | 4fd6a56 | 2017-08-07 15:12:54 -0700 | [diff] [blame] | 3126 | struct kgsl_mmu *mmu = &dev_priv->device->mmu; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3127 | unsigned int align; |
| 3128 | |
| 3129 | flags &= KGSL_MEMFLAGS_GPUREADONLY |
| 3130 | | KGSL_CACHEMODE_MASK |
| 3131 | | KGSL_MEMTYPE_MASK |
| 3132 | | KGSL_MEMALIGN_MASK |
| 3133 | | KGSL_MEMFLAGS_USE_CPU_MAP |
| 3134 | | KGSL_MEMFLAGS_SECURE |
Shrenuj Bansal | 4fd6a56 | 2017-08-07 15:12:54 -0700 | [diff] [blame] | 3135 | | KGSL_MEMFLAGS_FORCE_32BIT |
| 3136 | | KGSL_MEMFLAGS_IOCOHERENT; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3137 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3138 | /* Return not supported error if secure memory isn't enabled */ |
Shrenuj Bansal | 4fd6a56 | 2017-08-07 15:12:54 -0700 | [diff] [blame] | 3139 | if (!kgsl_mmu_is_secured(mmu) && |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3140 | (flags & KGSL_MEMFLAGS_SECURE)) { |
| 3141 | dev_WARN_ONCE(dev_priv->device->dev, 1, |
| 3142 | "Secure memory not supported"); |
| 3143 | return ERR_PTR(-EOPNOTSUPP); |
| 3144 | } |
| 3145 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3146 | /* Cap the alignment bits to the highest number we can handle */ |
| 3147 | align = MEMFLAGS(flags, KGSL_MEMALIGN_MASK, KGSL_MEMALIGN_SHIFT); |
| 3148 | if (align >= ilog2(KGSL_MAX_ALIGN)) { |
| 3149 | KGSL_CORE_ERR("Alignment too large; restricting to %dK\n", |
| 3150 | KGSL_MAX_ALIGN >> 10); |
| 3151 | |
| 3152 | flags &= ~((uint64_t) KGSL_MEMALIGN_MASK); |
Lynus Vaz | eb7af68 | 2017-04-17 18:36:01 +0530 | [diff] [blame] | 3153 | flags |= (uint64_t)((ilog2(KGSL_MAX_ALIGN) << |
| 3154 | KGSL_MEMALIGN_SHIFT) & |
| 3155 | KGSL_MEMALIGN_MASK); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3156 | } |
| 3157 | |
| 3158 | /* For now only allow allocations up to 4G */ |
| 3159 | if (size == 0 || size > UINT_MAX) |
| 3160 | return ERR_PTR(-EINVAL); |
| 3161 | |
| 3162 | flags = kgsl_filter_cachemode(flags); |
| 3163 | |
| 3164 | entry = kgsl_mem_entry_create(); |
| 3165 | if (entry == NULL) |
| 3166 | return ERR_PTR(-ENOMEM); |
| 3167 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3168 | ret = kgsl_allocate_user(dev_priv->device, &entry->memdesc, |
| 3169 | size, flags); |
| 3170 | if (ret != 0) |
| 3171 | goto err; |
| 3172 | |
| 3173 | ret = kgsl_mem_entry_attach_process(dev_priv->device, private, entry); |
| 3174 | if (ret != 0) { |
| 3175 | kgsl_sharedmem_free(&entry->memdesc); |
| 3176 | goto err; |
| 3177 | } |
| 3178 | |
| 3179 | kgsl_process_add_stats(private, |
| 3180 | kgsl_memdesc_usermem_type(&entry->memdesc), |
| 3181 | entry->memdesc.size); |
| 3182 | trace_kgsl_mem_alloc(entry); |
| 3183 | |
| 3184 | kgsl_mem_entry_commit_process(entry); |
| 3185 | return entry; |
| 3186 | err: |
| 3187 | kfree(entry); |
| 3188 | return ERR_PTR(ret); |
| 3189 | } |
| 3190 | |
| 3191 | static void copy_metadata(struct kgsl_mem_entry *entry, uint64_t metadata, |
| 3192 | unsigned int len) |
| 3193 | { |
| 3194 | unsigned int i, size; |
| 3195 | |
| 3196 | if (len == 0) |
| 3197 | return; |
| 3198 | |
| 3199 | size = min_t(unsigned int, len, sizeof(entry->metadata) - 1); |
| 3200 | |
| 3201 | if (copy_from_user(entry->metadata, to_user_ptr(metadata), size)) { |
| 3202 | memset(entry->metadata, 0, sizeof(entry->metadata)); |
| 3203 | return; |
| 3204 | } |
| 3205 | |
| 3206 | /* Clean up non printable characters in the string */ |
| 3207 | for (i = 0; i < size && entry->metadata[i] != 0; i++) { |
| 3208 | if (!isprint(entry->metadata[i])) |
| 3209 | entry->metadata[i] = '?'; |
| 3210 | } |
| 3211 | } |
| 3212 | |
| 3213 | long kgsl_ioctl_gpuobj_alloc(struct kgsl_device_private *dev_priv, |
| 3214 | unsigned int cmd, void *data) |
| 3215 | { |
| 3216 | struct kgsl_gpuobj_alloc *param = data; |
| 3217 | struct kgsl_mem_entry *entry; |
| 3218 | |
Deepak Kumar | cf056d1 | 2018-04-17 15:59:42 +0530 | [diff] [blame] | 3219 | if (kgsl_is_compat_task()) |
| 3220 | param->flags |= KGSL_MEMFLAGS_FORCE_32BIT; |
| 3221 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3222 | entry = gpumem_alloc_entry(dev_priv, param->size, param->flags); |
| 3223 | |
| 3224 | if (IS_ERR(entry)) |
| 3225 | return PTR_ERR(entry); |
| 3226 | |
| 3227 | copy_metadata(entry, param->metadata, param->metadata_len); |
| 3228 | |
| 3229 | param->size = entry->memdesc.size; |
| 3230 | param->flags = entry->memdesc.flags; |
| 3231 | param->mmapsize = kgsl_memdesc_footprint(&entry->memdesc); |
| 3232 | param->id = entry->id; |
| 3233 | |
Tarun Karra | 24d3fe1 | 2017-04-05 15:23:03 -0700 | [diff] [blame] | 3234 | /* Put the extra ref from kgsl_mem_entry_create() */ |
| 3235 | kgsl_mem_entry_put(entry); |
| 3236 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3237 | return 0; |
| 3238 | } |
| 3239 | |
| 3240 | long kgsl_ioctl_gpumem_alloc(struct kgsl_device_private *dev_priv, |
| 3241 | unsigned int cmd, void *data) |
| 3242 | { |
| 3243 | struct kgsl_gpumem_alloc *param = data; |
| 3244 | struct kgsl_mem_entry *entry; |
| 3245 | uint64_t flags = param->flags; |
| 3246 | |
| 3247 | /* Legacy functions doesn't support these advanced features */ |
| 3248 | flags &= ~((uint64_t) KGSL_MEMFLAGS_USE_CPU_MAP); |
Deepak Kumar | cf056d1 | 2018-04-17 15:59:42 +0530 | [diff] [blame] | 3249 | |
| 3250 | if (kgsl_is_compat_task()) |
| 3251 | flags |= KGSL_MEMFLAGS_FORCE_32BIT; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3252 | |
| 3253 | entry = gpumem_alloc_entry(dev_priv, (uint64_t) param->size, flags); |
| 3254 | |
| 3255 | if (IS_ERR(entry)) |
| 3256 | return PTR_ERR(entry); |
| 3257 | |
| 3258 | param->gpuaddr = (unsigned long) entry->memdesc.gpuaddr; |
| 3259 | param->size = (size_t) entry->memdesc.size; |
| 3260 | param->flags = (unsigned int) entry->memdesc.flags; |
| 3261 | |
Tarun Karra | 24d3fe1 | 2017-04-05 15:23:03 -0700 | [diff] [blame] | 3262 | /* Put the extra ref from kgsl_mem_entry_create() */ |
| 3263 | kgsl_mem_entry_put(entry); |
| 3264 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3265 | return 0; |
| 3266 | } |
| 3267 | |
| 3268 | long kgsl_ioctl_gpumem_alloc_id(struct kgsl_device_private *dev_priv, |
| 3269 | unsigned int cmd, void *data) |
| 3270 | { |
| 3271 | struct kgsl_gpumem_alloc_id *param = data; |
| 3272 | struct kgsl_mem_entry *entry; |
| 3273 | uint64_t flags = param->flags; |
| 3274 | |
Deepak Kumar | cf056d1 | 2018-04-17 15:59:42 +0530 | [diff] [blame] | 3275 | if (kgsl_is_compat_task()) |
| 3276 | flags |= KGSL_MEMFLAGS_FORCE_32BIT; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3277 | |
| 3278 | entry = gpumem_alloc_entry(dev_priv, (uint64_t) param->size, flags); |
| 3279 | |
| 3280 | if (IS_ERR(entry)) |
| 3281 | return PTR_ERR(entry); |
| 3282 | |
| 3283 | param->id = entry->id; |
| 3284 | param->flags = (unsigned int) entry->memdesc.flags; |
| 3285 | param->size = (size_t) entry->memdesc.size; |
| 3286 | param->mmapsize = (size_t) kgsl_memdesc_footprint(&entry->memdesc); |
| 3287 | param->gpuaddr = (unsigned long) entry->memdesc.gpuaddr; |
| 3288 | |
Tarun Karra | 24d3fe1 | 2017-04-05 15:23:03 -0700 | [diff] [blame] | 3289 | /* Put the extra ref from kgsl_mem_entry_create() */ |
| 3290 | kgsl_mem_entry_put(entry); |
| 3291 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3292 | return 0; |
| 3293 | } |
| 3294 | |
| 3295 | long kgsl_ioctl_gpumem_get_info(struct kgsl_device_private *dev_priv, |
| 3296 | unsigned int cmd, void *data) |
| 3297 | { |
| 3298 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 3299 | struct kgsl_gpumem_get_info *param = data; |
| 3300 | struct kgsl_mem_entry *entry = NULL; |
| 3301 | int result = 0; |
| 3302 | |
| 3303 | if (param->id != 0) |
| 3304 | entry = kgsl_sharedmem_find_id(private, param->id); |
| 3305 | else if (param->gpuaddr != 0) |
| 3306 | entry = kgsl_sharedmem_find(private, (uint64_t) param->gpuaddr); |
| 3307 | |
| 3308 | if (entry == NULL) |
| 3309 | return -EINVAL; |
| 3310 | |
| 3311 | /* |
| 3312 | * If any of the 64 bit address / sizes would end up being |
| 3313 | * truncated, return -ERANGE. That will signal the user that they |
| 3314 | * should use a more modern API |
| 3315 | */ |
| 3316 | if (entry->memdesc.gpuaddr > ULONG_MAX) |
| 3317 | result = -ERANGE; |
| 3318 | |
| 3319 | param->gpuaddr = (unsigned long) entry->memdesc.gpuaddr; |
| 3320 | param->id = entry->id; |
| 3321 | param->flags = (unsigned int) entry->memdesc.flags; |
| 3322 | param->size = (size_t) entry->memdesc.size; |
| 3323 | param->mmapsize = (size_t) kgsl_memdesc_footprint(&entry->memdesc); |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 3324 | /* |
| 3325 | * Entries can have multiple user mappings so thre isn't any one address |
| 3326 | * we can report. Plus, the user should already know their mappings, so |
| 3327 | * there isn't any value in reporting it back to them. |
| 3328 | */ |
| 3329 | param->useraddr = 0; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3330 | |
| 3331 | kgsl_mem_entry_put(entry); |
| 3332 | return result; |
| 3333 | } |
| 3334 | |
| 3335 | static inline int _sparse_alloc_param_sanity_check(uint64_t size, |
| 3336 | uint64_t pagesize) |
| 3337 | { |
| 3338 | if (size == 0 || pagesize == 0) |
| 3339 | return -EINVAL; |
| 3340 | |
| 3341 | if (pagesize != PAGE_SIZE && pagesize != SZ_64K) |
| 3342 | return -EINVAL; |
| 3343 | |
| 3344 | if (pagesize > size || !IS_ALIGNED(size, pagesize)) |
| 3345 | return -EINVAL; |
| 3346 | |
| 3347 | return 0; |
| 3348 | } |
| 3349 | |
| 3350 | long kgsl_ioctl_sparse_phys_alloc(struct kgsl_device_private *dev_priv, |
| 3351 | unsigned int cmd, void *data) |
| 3352 | { |
| 3353 | struct kgsl_process_private *process = dev_priv->process_priv; |
Harshdeep Dhatt | 67d23bf | 2019-09-09 11:05:48 -0600 | [diff] [blame] | 3354 | struct kgsl_device *device = dev_priv->device; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3355 | struct kgsl_sparse_phys_alloc *param = data; |
| 3356 | struct kgsl_mem_entry *entry; |
Lynus Vaz | 90d98b5 | 2018-04-09 14:45:36 +0530 | [diff] [blame] | 3357 | uint64_t flags; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3358 | int ret; |
| 3359 | int id; |
| 3360 | |
Harshdeep Dhatt | 67d23bf | 2019-09-09 11:05:48 -0600 | [diff] [blame] | 3361 | if (!(device->flags & KGSL_FLAG_SPARSE)) |
| 3362 | return -ENOTSUPP; |
| 3363 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3364 | ret = _sparse_alloc_param_sanity_check(param->size, param->pagesize); |
| 3365 | if (ret) |
| 3366 | return ret; |
| 3367 | |
| 3368 | entry = kgsl_mem_entry_create(); |
| 3369 | if (entry == NULL) |
| 3370 | return -ENOMEM; |
| 3371 | |
| 3372 | ret = kgsl_process_private_get(process); |
| 3373 | if (!ret) { |
| 3374 | ret = -EBADF; |
| 3375 | goto err_free_entry; |
| 3376 | } |
| 3377 | |
| 3378 | idr_preload(GFP_KERNEL); |
| 3379 | spin_lock(&process->mem_lock); |
| 3380 | /* Allocate the ID but don't attach the pointer just yet */ |
| 3381 | id = idr_alloc(&process->mem_idr, NULL, 1, 0, GFP_NOWAIT); |
| 3382 | spin_unlock(&process->mem_lock); |
| 3383 | idr_preload_end(); |
| 3384 | |
| 3385 | if (id < 0) { |
| 3386 | ret = id; |
| 3387 | goto err_put_proc_priv; |
| 3388 | } |
| 3389 | |
| 3390 | entry->id = id; |
| 3391 | entry->priv = process; |
| 3392 | |
Lynus Vaz | 90d98b5 | 2018-04-09 14:45:36 +0530 | [diff] [blame] | 3393 | flags = KGSL_MEMFLAGS_SPARSE_PHYS | |
| 3394 | ((ilog2(param->pagesize) << KGSL_MEMALIGN_SHIFT) & |
| 3395 | KGSL_MEMALIGN_MASK); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3396 | |
| 3397 | ret = kgsl_allocate_user(dev_priv->device, &entry->memdesc, |
Lynus Vaz | 90d98b5 | 2018-04-09 14:45:36 +0530 | [diff] [blame] | 3398 | param->size, flags); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3399 | if (ret) |
| 3400 | goto err_remove_idr; |
| 3401 | |
| 3402 | /* Sanity check to verify we got correct pagesize */ |
| 3403 | if (param->pagesize != PAGE_SIZE && entry->memdesc.sgt != NULL) { |
| 3404 | struct scatterlist *s; |
| 3405 | int i; |
| 3406 | |
| 3407 | for_each_sg(entry->memdesc.sgt->sgl, s, |
| 3408 | entry->memdesc.sgt->nents, i) { |
| 3409 | if (!IS_ALIGNED(s->length, param->pagesize)) |
| 3410 | goto err_invalid_pages; |
| 3411 | } |
| 3412 | } |
| 3413 | |
| 3414 | param->id = entry->id; |
| 3415 | param->flags = entry->memdesc.flags; |
| 3416 | |
| 3417 | trace_sparse_phys_alloc(entry->id, param->size, param->pagesize); |
| 3418 | kgsl_mem_entry_commit_process(entry); |
| 3419 | |
Tarun Karra | 24d3fe1 | 2017-04-05 15:23:03 -0700 | [diff] [blame] | 3420 | /* Put the extra ref from kgsl_mem_entry_create() */ |
| 3421 | kgsl_mem_entry_put(entry); |
| 3422 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3423 | return 0; |
| 3424 | |
| 3425 | err_invalid_pages: |
| 3426 | kgsl_sharedmem_free(&entry->memdesc); |
| 3427 | err_remove_idr: |
| 3428 | spin_lock(&process->mem_lock); |
| 3429 | idr_remove(&process->mem_idr, entry->id); |
| 3430 | spin_unlock(&process->mem_lock); |
| 3431 | err_put_proc_priv: |
| 3432 | kgsl_process_private_put(process); |
| 3433 | err_free_entry: |
| 3434 | kfree(entry); |
| 3435 | |
| 3436 | return ret; |
| 3437 | } |
| 3438 | |
| 3439 | long kgsl_ioctl_sparse_phys_free(struct kgsl_device_private *dev_priv, |
| 3440 | unsigned int cmd, void *data) |
| 3441 | { |
| 3442 | struct kgsl_process_private *process = dev_priv->process_priv; |
Harshdeep Dhatt | 67d23bf | 2019-09-09 11:05:48 -0600 | [diff] [blame] | 3443 | struct kgsl_device *device = dev_priv->device; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3444 | struct kgsl_sparse_phys_free *param = data; |
| 3445 | struct kgsl_mem_entry *entry; |
| 3446 | |
Harshdeep Dhatt | 67d23bf | 2019-09-09 11:05:48 -0600 | [diff] [blame] | 3447 | if (!(device->flags & KGSL_FLAG_SPARSE)) |
| 3448 | return -ENOTSUPP; |
| 3449 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3450 | entry = kgsl_sharedmem_find_id_flags(process, param->id, |
| 3451 | KGSL_MEMFLAGS_SPARSE_PHYS); |
| 3452 | if (entry == NULL) |
| 3453 | return -EINVAL; |
| 3454 | |
Deepak Kumar | 3281468 | 2018-02-16 11:46:26 +0530 | [diff] [blame] | 3455 | if (!kgsl_mem_entry_set_pend(entry)) { |
| 3456 | kgsl_mem_entry_put(entry); |
| 3457 | return -EBUSY; |
| 3458 | } |
| 3459 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3460 | if (entry->memdesc.cur_bindings != 0) { |
Deepak Kumar | 3281468 | 2018-02-16 11:46:26 +0530 | [diff] [blame] | 3461 | kgsl_mem_entry_unset_pend(entry); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3462 | kgsl_mem_entry_put(entry); |
| 3463 | return -EINVAL; |
| 3464 | } |
| 3465 | |
| 3466 | trace_sparse_phys_free(entry->id); |
| 3467 | |
| 3468 | /* One put for find_id(), one put for the kgsl_mem_entry_create() */ |
| 3469 | kgsl_mem_entry_put(entry); |
Hareesh Gundu | 615439d | 2017-06-16 17:06:57 +0530 | [diff] [blame] | 3470 | kgsl_mem_entry_put(entry); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3471 | |
| 3472 | return 0; |
| 3473 | } |
| 3474 | |
| 3475 | long kgsl_ioctl_sparse_virt_alloc(struct kgsl_device_private *dev_priv, |
| 3476 | unsigned int cmd, void *data) |
| 3477 | { |
| 3478 | struct kgsl_process_private *private = dev_priv->process_priv; |
Harshdeep Dhatt | 67d23bf | 2019-09-09 11:05:48 -0600 | [diff] [blame] | 3479 | struct kgsl_device *device = dev_priv->device; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3480 | struct kgsl_sparse_virt_alloc *param = data; |
| 3481 | struct kgsl_mem_entry *entry; |
| 3482 | int ret; |
| 3483 | |
Harshdeep Dhatt | 67d23bf | 2019-09-09 11:05:48 -0600 | [diff] [blame] | 3484 | if (!(device->flags & KGSL_FLAG_SPARSE)) |
| 3485 | return -ENOTSUPP; |
| 3486 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3487 | ret = _sparse_alloc_param_sanity_check(param->size, param->pagesize); |
| 3488 | if (ret) |
| 3489 | return ret; |
| 3490 | |
| 3491 | entry = kgsl_mem_entry_create(); |
| 3492 | if (entry == NULL) |
| 3493 | return -ENOMEM; |
| 3494 | |
Lynus Vaz | 90d98b5 | 2018-04-09 14:45:36 +0530 | [diff] [blame] | 3495 | kgsl_memdesc_init(dev_priv->device, &entry->memdesc, |
| 3496 | KGSL_MEMFLAGS_SPARSE_VIRT); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3497 | entry->memdesc.size = param->size; |
| 3498 | entry->memdesc.cur_bindings = 0; |
| 3499 | kgsl_memdesc_set_align(&entry->memdesc, ilog2(param->pagesize)); |
| 3500 | |
| 3501 | spin_lock_init(&entry->bind_lock); |
| 3502 | entry->bind_tree = RB_ROOT; |
| 3503 | |
| 3504 | ret = kgsl_mem_entry_attach_process(dev_priv->device, private, entry); |
| 3505 | if (ret) { |
| 3506 | kfree(entry); |
| 3507 | return ret; |
| 3508 | } |
| 3509 | |
| 3510 | param->id = entry->id; |
| 3511 | param->gpuaddr = entry->memdesc.gpuaddr; |
| 3512 | param->flags = entry->memdesc.flags; |
| 3513 | |
| 3514 | trace_sparse_virt_alloc(entry->id, param->size, param->pagesize); |
| 3515 | kgsl_mem_entry_commit_process(entry); |
| 3516 | |
Tarun Karra | 24d3fe1 | 2017-04-05 15:23:03 -0700 | [diff] [blame] | 3517 | /* Put the extra ref from kgsl_mem_entry_create() */ |
| 3518 | kgsl_mem_entry_put(entry); |
| 3519 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3520 | return 0; |
| 3521 | } |
| 3522 | |
| 3523 | long kgsl_ioctl_sparse_virt_free(struct kgsl_device_private *dev_priv, |
| 3524 | unsigned int cmd, void *data) |
| 3525 | { |
| 3526 | struct kgsl_process_private *process = dev_priv->process_priv; |
Harshdeep Dhatt | 67d23bf | 2019-09-09 11:05:48 -0600 | [diff] [blame] | 3527 | struct kgsl_device *device = dev_priv->device; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3528 | struct kgsl_sparse_virt_free *param = data; |
| 3529 | struct kgsl_mem_entry *entry = NULL; |
| 3530 | |
Harshdeep Dhatt | 67d23bf | 2019-09-09 11:05:48 -0600 | [diff] [blame] | 3531 | if (!(device->flags & KGSL_FLAG_SPARSE)) |
| 3532 | return -ENOTSUPP; |
| 3533 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3534 | entry = kgsl_sharedmem_find_id_flags(process, param->id, |
| 3535 | KGSL_MEMFLAGS_SPARSE_VIRT); |
| 3536 | if (entry == NULL) |
| 3537 | return -EINVAL; |
| 3538 | |
Deepak Kumar | 3281468 | 2018-02-16 11:46:26 +0530 | [diff] [blame] | 3539 | if (!kgsl_mem_entry_set_pend(entry)) { |
| 3540 | kgsl_mem_entry_put(entry); |
| 3541 | return -EBUSY; |
| 3542 | } |
| 3543 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3544 | if (entry->bind_tree.rb_node != NULL) { |
Deepak Kumar | 3281468 | 2018-02-16 11:46:26 +0530 | [diff] [blame] | 3545 | kgsl_mem_entry_unset_pend(entry); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3546 | kgsl_mem_entry_put(entry); |
| 3547 | return -EINVAL; |
| 3548 | } |
| 3549 | |
| 3550 | trace_sparse_virt_free(entry->id); |
| 3551 | |
| 3552 | /* One put for find_id(), one put for the kgsl_mem_entry_create() */ |
| 3553 | kgsl_mem_entry_put(entry); |
Hareesh Gundu | 615439d | 2017-06-16 17:06:57 +0530 | [diff] [blame] | 3554 | kgsl_mem_entry_put(entry); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3555 | |
| 3556 | return 0; |
| 3557 | } |
| 3558 | |
Lynus Vaz | 4930cb1 | 2017-09-08 18:32:53 +0530 | [diff] [blame] | 3559 | /* entry->bind_lock must be held by the caller */ |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3560 | static int _sparse_add_to_bind_tree(struct kgsl_mem_entry *entry, |
| 3561 | uint64_t v_offset, |
| 3562 | struct kgsl_memdesc *memdesc, |
| 3563 | uint64_t p_offset, |
| 3564 | uint64_t size, |
| 3565 | uint64_t flags) |
| 3566 | { |
| 3567 | struct sparse_bind_object *new; |
| 3568 | struct rb_node **node, *parent = NULL; |
| 3569 | |
Sunil Khatri | 94dce8f | 2017-09-04 14:05:03 +0530 | [diff] [blame] | 3570 | new = kzalloc(sizeof(*new), GFP_ATOMIC); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3571 | if (new == NULL) |
| 3572 | return -ENOMEM; |
| 3573 | |
| 3574 | new->v_off = v_offset; |
| 3575 | new->p_off = p_offset; |
| 3576 | new->p_memdesc = memdesc; |
| 3577 | new->size = size; |
| 3578 | new->flags = flags; |
| 3579 | |
| 3580 | node = &entry->bind_tree.rb_node; |
| 3581 | |
| 3582 | while (*node != NULL) { |
| 3583 | struct sparse_bind_object *this; |
| 3584 | |
| 3585 | parent = *node; |
| 3586 | this = rb_entry(parent, struct sparse_bind_object, node); |
| 3587 | |
Lynus Vaz | e8c8257 | 2017-09-08 17:27:56 +0530 | [diff] [blame] | 3588 | if ((new->v_off < this->v_off) && |
| 3589 | ((new->v_off + new->size) <= this->v_off)) |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3590 | node = &parent->rb_left; |
Lynus Vaz | e8c8257 | 2017-09-08 17:27:56 +0530 | [diff] [blame] | 3591 | else if ((new->v_off > this->v_off) && |
| 3592 | (new->v_off >= (this->v_off + this->size))) |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3593 | node = &parent->rb_right; |
Lynus Vaz | e8c8257 | 2017-09-08 17:27:56 +0530 | [diff] [blame] | 3594 | else { |
| 3595 | kfree(new); |
| 3596 | return -EADDRINUSE; |
| 3597 | } |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3598 | } |
| 3599 | |
| 3600 | rb_link_node(&new->node, parent, node); |
| 3601 | rb_insert_color(&new->node, &entry->bind_tree); |
| 3602 | |
| 3603 | return 0; |
| 3604 | } |
| 3605 | |
| 3606 | static int _sparse_rm_from_bind_tree(struct kgsl_mem_entry *entry, |
| 3607 | struct sparse_bind_object *obj, |
| 3608 | uint64_t v_offset, uint64_t size) |
| 3609 | { |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3610 | if (v_offset == obj->v_off && size >= obj->size) { |
| 3611 | /* |
| 3612 | * We are all encompassing, remove the entry and free |
| 3613 | * things up |
| 3614 | */ |
| 3615 | rb_erase(&obj->node, &entry->bind_tree); |
| 3616 | kfree(obj); |
| 3617 | } else if (v_offset == obj->v_off) { |
| 3618 | /* |
| 3619 | * We are the front of the node, adjust the front of |
| 3620 | * the node |
| 3621 | */ |
| 3622 | obj->v_off += size; |
| 3623 | obj->p_off += size; |
| 3624 | obj->size -= size; |
| 3625 | } else if ((v_offset + size) == (obj->v_off + obj->size)) { |
| 3626 | /* |
| 3627 | * We are at the end of the obj, adjust the beginning |
| 3628 | * points |
| 3629 | */ |
| 3630 | obj->size -= size; |
| 3631 | } else { |
| 3632 | /* |
| 3633 | * We are in the middle of a node, split it up and |
| 3634 | * create a new mini node. Adjust this node's bounds |
| 3635 | * and add the new node to the list. |
| 3636 | */ |
| 3637 | uint64_t tmp_size = obj->size; |
| 3638 | int ret; |
| 3639 | |
| 3640 | obj->size = v_offset - obj->v_off; |
| 3641 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3642 | ret = _sparse_add_to_bind_tree(entry, v_offset + size, |
| 3643 | obj->p_memdesc, |
| 3644 | obj->p_off + (v_offset - obj->v_off) + size, |
| 3645 | tmp_size - (v_offset - obj->v_off) - size, |
| 3646 | obj->flags); |
| 3647 | |
| 3648 | return ret; |
| 3649 | } |
| 3650 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3651 | return 0; |
| 3652 | } |
| 3653 | |
Sunil Khatri | 94dce8f | 2017-09-04 14:05:03 +0530 | [diff] [blame] | 3654 | /* entry->bind_lock must be held by the caller */ |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3655 | static struct sparse_bind_object *_find_containing_bind_obj( |
| 3656 | struct kgsl_mem_entry *entry, |
| 3657 | uint64_t offset, uint64_t size) |
| 3658 | { |
| 3659 | struct sparse_bind_object *obj = NULL; |
| 3660 | struct rb_node *node = entry->bind_tree.rb_node; |
| 3661 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3662 | while (node != NULL) { |
| 3663 | obj = rb_entry(node, struct sparse_bind_object, node); |
| 3664 | |
| 3665 | if (offset == obj->v_off) { |
| 3666 | break; |
| 3667 | } else if (offset < obj->v_off) { |
| 3668 | if (offset + size > obj->v_off) |
| 3669 | break; |
| 3670 | node = node->rb_left; |
| 3671 | obj = NULL; |
| 3672 | } else if (offset > obj->v_off) { |
| 3673 | if (offset < obj->v_off + obj->size) |
| 3674 | break; |
| 3675 | node = node->rb_right; |
| 3676 | obj = NULL; |
| 3677 | } |
| 3678 | } |
| 3679 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3680 | return obj; |
| 3681 | } |
| 3682 | |
Sunil Khatri | 94dce8f | 2017-09-04 14:05:03 +0530 | [diff] [blame] | 3683 | /* entry->bind_lock must be held by the caller */ |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3684 | static int _sparse_unbind(struct kgsl_mem_entry *entry, |
| 3685 | struct sparse_bind_object *bind_obj, |
| 3686 | uint64_t offset, uint64_t size) |
| 3687 | { |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3688 | int ret; |
| 3689 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3690 | ret = _sparse_rm_from_bind_tree(entry, bind_obj, offset, size); |
| 3691 | if (ret == 0) { |
| 3692 | atomic_long_sub(size, &kgsl_driver.stats.mapped); |
| 3693 | trace_sparse_unbind(entry->id, offset, size); |
| 3694 | } |
| 3695 | |
| 3696 | return ret; |
| 3697 | } |
| 3698 | |
| 3699 | static long sparse_unbind_range(struct kgsl_sparse_binding_object *obj, |
| 3700 | struct kgsl_mem_entry *virt_entry) |
| 3701 | { |
| 3702 | struct sparse_bind_object *bind_obj; |
Sunil Khatri | 94dce8f | 2017-09-04 14:05:03 +0530 | [diff] [blame] | 3703 | struct kgsl_memdesc *memdesc; |
| 3704 | struct kgsl_pagetable *pt; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3705 | int ret = 0; |
| 3706 | uint64_t size = obj->size; |
| 3707 | uint64_t tmp_size = obj->size; |
| 3708 | uint64_t offset = obj->virtoffset; |
| 3709 | |
| 3710 | while (size > 0 && ret == 0) { |
| 3711 | tmp_size = size; |
Sunil Khatri | 94dce8f | 2017-09-04 14:05:03 +0530 | [diff] [blame] | 3712 | |
| 3713 | spin_lock(&virt_entry->bind_lock); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3714 | bind_obj = _find_containing_bind_obj(virt_entry, offset, size); |
Sunil Khatri | 94dce8f | 2017-09-04 14:05:03 +0530 | [diff] [blame] | 3715 | |
| 3716 | if (bind_obj == NULL) { |
| 3717 | spin_unlock(&virt_entry->bind_lock); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3718 | return 0; |
Sunil Khatri | 94dce8f | 2017-09-04 14:05:03 +0530 | [diff] [blame] | 3719 | } |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3720 | |
| 3721 | if (bind_obj->v_off > offset) { |
| 3722 | tmp_size = size - bind_obj->v_off - offset; |
| 3723 | if (tmp_size > bind_obj->size) |
| 3724 | tmp_size = bind_obj->size; |
| 3725 | offset = bind_obj->v_off; |
| 3726 | } else if (bind_obj->v_off < offset) { |
| 3727 | uint64_t diff = offset - bind_obj->v_off; |
| 3728 | |
| 3729 | if (diff + size > bind_obj->size) |
| 3730 | tmp_size = bind_obj->size - diff; |
| 3731 | } else { |
| 3732 | if (tmp_size > bind_obj->size) |
| 3733 | tmp_size = bind_obj->size; |
| 3734 | } |
| 3735 | |
Sunil Khatri | 94dce8f | 2017-09-04 14:05:03 +0530 | [diff] [blame] | 3736 | memdesc = bind_obj->p_memdesc; |
| 3737 | pt = memdesc->pagetable; |
| 3738 | |
| 3739 | if (memdesc->cur_bindings < (tmp_size / PAGE_SIZE)) { |
| 3740 | spin_unlock(&virt_entry->bind_lock); |
| 3741 | return -EINVAL; |
| 3742 | } |
| 3743 | |
| 3744 | memdesc->cur_bindings -= tmp_size / PAGE_SIZE; |
| 3745 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3746 | ret = _sparse_unbind(virt_entry, bind_obj, offset, tmp_size); |
Sunil Khatri | 94dce8f | 2017-09-04 14:05:03 +0530 | [diff] [blame] | 3747 | spin_unlock(&virt_entry->bind_lock); |
| 3748 | |
| 3749 | ret = kgsl_mmu_unmap_offset(pt, memdesc, |
| 3750 | virt_entry->memdesc.gpuaddr, offset, tmp_size); |
| 3751 | if (ret) |
| 3752 | return ret; |
| 3753 | |
| 3754 | ret = kgsl_mmu_sparse_dummy_map(pt, memdesc, offset, tmp_size); |
| 3755 | if (ret) |
| 3756 | return ret; |
| 3757 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3758 | if (ret == 0) { |
| 3759 | offset += tmp_size; |
| 3760 | size -= tmp_size; |
| 3761 | } |
| 3762 | } |
| 3763 | |
| 3764 | return ret; |
| 3765 | } |
| 3766 | |
| 3767 | static inline bool _is_phys_bindable(struct kgsl_mem_entry *phys_entry, |
| 3768 | uint64_t offset, uint64_t size, uint64_t flags) |
| 3769 | { |
| 3770 | struct kgsl_memdesc *memdesc = &phys_entry->memdesc; |
| 3771 | |
| 3772 | if (!IS_ALIGNED(offset | size, kgsl_memdesc_get_pagesize(memdesc))) |
| 3773 | return false; |
| 3774 | |
Sudeep Yedalapure | 8ff9799 | 2017-01-20 20:12:51 +0530 | [diff] [blame] | 3775 | if (offset + size < offset) |
| 3776 | return false; |
| 3777 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3778 | if (!(flags & KGSL_SPARSE_BIND_MULTIPLE_TO_PHYS) && |
| 3779 | offset + size > memdesc->size) |
| 3780 | return false; |
| 3781 | |
| 3782 | return true; |
| 3783 | } |
| 3784 | |
| 3785 | static int _sparse_bind(struct kgsl_process_private *process, |
| 3786 | struct kgsl_mem_entry *virt_entry, uint64_t v_offset, |
| 3787 | struct kgsl_mem_entry *phys_entry, uint64_t p_offset, |
| 3788 | uint64_t size, uint64_t flags) |
| 3789 | { |
| 3790 | int ret; |
| 3791 | struct kgsl_pagetable *pagetable; |
| 3792 | struct kgsl_memdesc *memdesc = &phys_entry->memdesc; |
| 3793 | |
| 3794 | /* map the memory after unlocking if gpuaddr has been assigned */ |
| 3795 | if (memdesc->gpuaddr) |
| 3796 | return -EINVAL; |
| 3797 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3798 | pagetable = memdesc->pagetable; |
| 3799 | |
| 3800 | /* Clear out any mappings */ |
| 3801 | ret = kgsl_mmu_unmap_offset(pagetable, &virt_entry->memdesc, |
| 3802 | virt_entry->memdesc.gpuaddr, v_offset, size); |
| 3803 | if (ret) |
| 3804 | return ret; |
| 3805 | |
| 3806 | ret = kgsl_mmu_map_offset(pagetable, virt_entry->memdesc.gpuaddr, |
| 3807 | v_offset, memdesc, p_offset, size, flags); |
| 3808 | if (ret) { |
| 3809 | /* Try to clean up, but not the end of the world */ |
| 3810 | kgsl_mmu_sparse_dummy_map(pagetable, &virt_entry->memdesc, |
| 3811 | v_offset, size); |
| 3812 | return ret; |
| 3813 | } |
| 3814 | |
Lynus Vaz | 4930cb1 | 2017-09-08 18:32:53 +0530 | [diff] [blame] | 3815 | spin_lock(&virt_entry->bind_lock); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3816 | ret = _sparse_add_to_bind_tree(virt_entry, v_offset, memdesc, |
| 3817 | p_offset, size, flags); |
Lynus Vaz | 4930cb1 | 2017-09-08 18:32:53 +0530 | [diff] [blame] | 3818 | spin_unlock(&virt_entry->bind_lock); |
| 3819 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3820 | if (ret == 0) |
| 3821 | memdesc->cur_bindings += size / PAGE_SIZE; |
| 3822 | |
| 3823 | return ret; |
| 3824 | } |
| 3825 | |
| 3826 | static long sparse_bind_range(struct kgsl_process_private *private, |
| 3827 | struct kgsl_sparse_binding_object *obj, |
| 3828 | struct kgsl_mem_entry *virt_entry) |
| 3829 | { |
| 3830 | struct kgsl_mem_entry *phys_entry; |
| 3831 | int ret; |
| 3832 | |
| 3833 | phys_entry = kgsl_sharedmem_find_id_flags(private, obj->id, |
| 3834 | KGSL_MEMFLAGS_SPARSE_PHYS); |
| 3835 | if (phys_entry == NULL) |
| 3836 | return -EINVAL; |
| 3837 | |
| 3838 | if (!_is_phys_bindable(phys_entry, obj->physoffset, obj->size, |
| 3839 | obj->flags)) { |
| 3840 | kgsl_mem_entry_put(phys_entry); |
| 3841 | return -EINVAL; |
| 3842 | } |
| 3843 | |
| 3844 | if (kgsl_memdesc_get_align(&virt_entry->memdesc) != |
| 3845 | kgsl_memdesc_get_align(&phys_entry->memdesc)) { |
| 3846 | kgsl_mem_entry_put(phys_entry); |
| 3847 | return -EINVAL; |
| 3848 | } |
| 3849 | |
| 3850 | ret = sparse_unbind_range(obj, virt_entry); |
| 3851 | if (ret) { |
| 3852 | kgsl_mem_entry_put(phys_entry); |
| 3853 | return -EINVAL; |
| 3854 | } |
| 3855 | |
| 3856 | ret = _sparse_bind(private, virt_entry, obj->virtoffset, |
| 3857 | phys_entry, obj->physoffset, obj->size, |
| 3858 | obj->flags & KGSL_SPARSE_BIND_MULTIPLE_TO_PHYS); |
| 3859 | if (ret == 0) { |
| 3860 | KGSL_STATS_ADD(obj->size, &kgsl_driver.stats.mapped, |
| 3861 | &kgsl_driver.stats.mapped_max); |
| 3862 | |
| 3863 | trace_sparse_bind(virt_entry->id, obj->virtoffset, |
| 3864 | phys_entry->id, obj->physoffset, |
| 3865 | obj->size, obj->flags); |
| 3866 | } |
| 3867 | |
| 3868 | kgsl_mem_entry_put(phys_entry); |
| 3869 | |
| 3870 | return ret; |
| 3871 | } |
| 3872 | |
| 3873 | long kgsl_ioctl_sparse_bind(struct kgsl_device_private *dev_priv, |
| 3874 | unsigned int cmd, void *data) |
| 3875 | { |
| 3876 | struct kgsl_process_private *private = dev_priv->process_priv; |
Harshdeep Dhatt | 67d23bf | 2019-09-09 11:05:48 -0600 | [diff] [blame] | 3877 | struct kgsl_device *device = dev_priv->device; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3878 | struct kgsl_sparse_bind *param = data; |
| 3879 | struct kgsl_sparse_binding_object obj; |
| 3880 | struct kgsl_mem_entry *virt_entry; |
| 3881 | int pg_sz; |
| 3882 | void __user *ptr; |
| 3883 | int ret = 0; |
| 3884 | int i = 0; |
| 3885 | |
Harshdeep Dhatt | 67d23bf | 2019-09-09 11:05:48 -0600 | [diff] [blame] | 3886 | if (!(device->flags & KGSL_FLAG_SPARSE)) |
| 3887 | return -ENOTSUPP; |
| 3888 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3889 | ptr = (void __user *) (uintptr_t) param->list; |
| 3890 | |
| 3891 | if (param->size > sizeof(struct kgsl_sparse_binding_object) || |
| 3892 | param->count == 0 || ptr == NULL) |
| 3893 | return -EINVAL; |
| 3894 | |
| 3895 | virt_entry = kgsl_sharedmem_find_id_flags(private, param->id, |
| 3896 | KGSL_MEMFLAGS_SPARSE_VIRT); |
| 3897 | if (virt_entry == NULL) |
| 3898 | return -EINVAL; |
| 3899 | |
| 3900 | pg_sz = kgsl_memdesc_get_pagesize(&virt_entry->memdesc); |
| 3901 | |
| 3902 | for (i = 0; i < param->count; i++) { |
| 3903 | memset(&obj, 0, sizeof(obj)); |
| 3904 | ret = _copy_from_user(&obj, ptr, sizeof(obj), param->size); |
| 3905 | if (ret) |
| 3906 | break; |
| 3907 | |
| 3908 | /* Sanity check initial range */ |
Sudeep Yedalapure | 8ff9799 | 2017-01-20 20:12:51 +0530 | [diff] [blame] | 3909 | if (obj.size == 0 || obj.virtoffset + obj.size < obj.size || |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 3910 | obj.virtoffset + obj.size > virt_entry->memdesc.size || |
| 3911 | !(IS_ALIGNED(obj.virtoffset | obj.size, pg_sz))) { |
| 3912 | ret = -EINVAL; |
| 3913 | break; |
| 3914 | } |
| 3915 | |
| 3916 | if (obj.flags & KGSL_SPARSE_BIND) |
| 3917 | ret = sparse_bind_range(private, &obj, virt_entry); |
| 3918 | else if (obj.flags & KGSL_SPARSE_UNBIND) |
| 3919 | ret = sparse_unbind_range(&obj, virt_entry); |
| 3920 | else |
| 3921 | ret = -EINVAL; |
| 3922 | if (ret) |
| 3923 | break; |
| 3924 | |
| 3925 | ptr += sizeof(obj); |
| 3926 | } |
| 3927 | |
| 3928 | kgsl_mem_entry_put(virt_entry); |
| 3929 | |
| 3930 | return ret; |
| 3931 | } |
| 3932 | |
Tarun Karra | 2b8b363 | 2016-11-14 16:38:27 -0800 | [diff] [blame] | 3933 | long kgsl_ioctl_gpu_sparse_command(struct kgsl_device_private *dev_priv, |
| 3934 | unsigned int cmd, void *data) |
| 3935 | { |
| 3936 | struct kgsl_gpu_sparse_command *param = data; |
| 3937 | struct kgsl_device *device = dev_priv->device; |
| 3938 | struct kgsl_context *context; |
| 3939 | struct kgsl_drawobj *drawobj[2]; |
| 3940 | struct kgsl_drawobj_sparse *sparseobj; |
| 3941 | long result; |
| 3942 | unsigned int i = 0; |
| 3943 | |
Harshdeep Dhatt | 67d23bf | 2019-09-09 11:05:48 -0600 | [diff] [blame] | 3944 | if (!(device->flags & KGSL_FLAG_SPARSE)) |
| 3945 | return -ENOTSUPP; |
| 3946 | |
Tarun Karra | 2b8b363 | 2016-11-14 16:38:27 -0800 | [diff] [blame] | 3947 | /* Make sure sparse and syncpoint count isn't too big */ |
| 3948 | if (param->numsparse > KGSL_MAX_SPARSE || |
| 3949 | param->numsyncs > KGSL_MAX_SYNCPOINTS) |
| 3950 | return -EINVAL; |
| 3951 | |
| 3952 | /* Make sure there is atleast one sparse or sync */ |
| 3953 | if (param->numsparse == 0 && param->numsyncs == 0) |
| 3954 | return -EINVAL; |
| 3955 | |
| 3956 | /* Only Sparse commands are supported in this ioctl */ |
| 3957 | if (!(param->flags & KGSL_DRAWOBJ_SPARSE) || (param->flags & |
| 3958 | (KGSL_DRAWOBJ_SUBMIT_IB_LIST | KGSL_DRAWOBJ_MARKER |
| 3959 | | KGSL_DRAWOBJ_SYNC))) |
| 3960 | return -EINVAL; |
| 3961 | |
| 3962 | context = kgsl_context_get_owner(dev_priv, param->context_id); |
| 3963 | if (context == NULL) |
| 3964 | return -EINVAL; |
| 3965 | |
| 3966 | /* Restrict bind commands to bind context */ |
| 3967 | if (!(context->flags & KGSL_CONTEXT_SPARSE)) { |
| 3968 | kgsl_context_put(context); |
| 3969 | return -EINVAL; |
| 3970 | } |
| 3971 | |
| 3972 | if (param->numsyncs) { |
| 3973 | struct kgsl_drawobj_sync *syncobj = kgsl_drawobj_sync_create( |
| 3974 | device, context); |
| 3975 | if (IS_ERR(syncobj)) { |
| 3976 | result = PTR_ERR(syncobj); |
| 3977 | goto done; |
| 3978 | } |
| 3979 | |
| 3980 | drawobj[i++] = DRAWOBJ(syncobj); |
| 3981 | result = kgsl_drawobj_sync_add_synclist(device, syncobj, |
| 3982 | to_user_ptr(param->synclist), |
| 3983 | param->syncsize, param->numsyncs); |
| 3984 | if (result) |
| 3985 | goto done; |
| 3986 | } |
| 3987 | |
| 3988 | if (param->numsparse) { |
| 3989 | sparseobj = kgsl_drawobj_sparse_create(device, context, |
| 3990 | param->flags); |
| 3991 | if (IS_ERR(sparseobj)) { |
| 3992 | result = PTR_ERR(sparseobj); |
| 3993 | goto done; |
| 3994 | } |
| 3995 | |
| 3996 | sparseobj->id = param->id; |
| 3997 | drawobj[i++] = DRAWOBJ(sparseobj); |
| 3998 | result = kgsl_drawobj_sparse_add_sparselist(device, sparseobj, |
| 3999 | param->id, to_user_ptr(param->sparselist), |
| 4000 | param->sparsesize, param->numsparse); |
| 4001 | if (result) |
| 4002 | goto done; |
| 4003 | } |
| 4004 | |
| 4005 | result = dev_priv->device->ftbl->queue_cmds(dev_priv, context, |
| 4006 | drawobj, i, ¶m->timestamp); |
| 4007 | |
| 4008 | done: |
| 4009 | /* |
| 4010 | * -EPROTO is a "success" error - it just tells the user that the |
| 4011 | * context had previously faulted |
| 4012 | */ |
| 4013 | if (result && result != -EPROTO) |
| 4014 | while (i--) |
| 4015 | kgsl_drawobj_destroy(drawobj[i]); |
| 4016 | |
| 4017 | kgsl_context_put(context); |
| 4018 | return result; |
| 4019 | } |
| 4020 | |
| 4021 | void kgsl_sparse_bind(struct kgsl_process_private *private, |
| 4022 | struct kgsl_drawobj_sparse *sparseobj) |
| 4023 | { |
| 4024 | struct kgsl_sparseobj_node *sparse_node; |
| 4025 | struct kgsl_mem_entry *virt_entry = NULL; |
| 4026 | long ret = 0; |
| 4027 | char *name; |
| 4028 | |
| 4029 | virt_entry = kgsl_sharedmem_find_id_flags(private, sparseobj->id, |
| 4030 | KGSL_MEMFLAGS_SPARSE_VIRT); |
| 4031 | if (virt_entry == NULL) |
| 4032 | return; |
| 4033 | |
| 4034 | list_for_each_entry(sparse_node, &sparseobj->sparselist, node) { |
| 4035 | if (sparse_node->obj.flags & KGSL_SPARSE_BIND) { |
| 4036 | ret = sparse_bind_range(private, &sparse_node->obj, |
| 4037 | virt_entry); |
| 4038 | name = "bind"; |
| 4039 | } else { |
| 4040 | ret = sparse_unbind_range(&sparse_node->obj, |
| 4041 | virt_entry); |
| 4042 | name = "unbind"; |
| 4043 | } |
| 4044 | |
| 4045 | if (ret) |
| 4046 | KGSL_CORE_ERR("kgsl: Unable to '%s' ret %ld virt_id %d, phys_id %d, virt_offset %16.16llX, phys_offset %16.16llX, size %16.16llX, flags %16.16llX\n", |
| 4047 | name, ret, sparse_node->virt_id, |
| 4048 | sparse_node->obj.id, |
| 4049 | sparse_node->obj.virtoffset, |
| 4050 | sparse_node->obj.physoffset, |
| 4051 | sparse_node->obj.size, sparse_node->obj.flags); |
| 4052 | } |
| 4053 | |
| 4054 | kgsl_mem_entry_put(virt_entry); |
| 4055 | } |
| 4056 | EXPORT_SYMBOL(kgsl_sparse_bind); |
| 4057 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4058 | long kgsl_ioctl_gpuobj_info(struct kgsl_device_private *dev_priv, |
| 4059 | unsigned int cmd, void *data) |
| 4060 | { |
| 4061 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 4062 | struct kgsl_gpuobj_info *param = data; |
| 4063 | struct kgsl_mem_entry *entry; |
| 4064 | |
| 4065 | if (param->id == 0) |
| 4066 | return -EINVAL; |
| 4067 | |
| 4068 | entry = kgsl_sharedmem_find_id(private, param->id); |
| 4069 | if (entry == NULL) |
| 4070 | return -EINVAL; |
| 4071 | |
| 4072 | param->id = entry->id; |
| 4073 | param->gpuaddr = entry->memdesc.gpuaddr; |
| 4074 | param->flags = entry->memdesc.flags; |
| 4075 | param->size = entry->memdesc.size; |
| 4076 | param->va_len = kgsl_memdesc_footprint(&entry->memdesc); |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 4077 | /* |
| 4078 | * Entries can have multiple user mappings so thre isn't any one address |
| 4079 | * we can report. Plus, the user should already know their mappings, so |
| 4080 | * there isn't any value in reporting it back to them. |
| 4081 | */ |
| 4082 | param->va_addr = 0; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4083 | |
| 4084 | kgsl_mem_entry_put(entry); |
| 4085 | return 0; |
| 4086 | } |
| 4087 | |
| 4088 | long kgsl_ioctl_gpuobj_set_info(struct kgsl_device_private *dev_priv, |
| 4089 | unsigned int cmd, void *data) |
| 4090 | { |
| 4091 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 4092 | struct kgsl_gpuobj_set_info *param = data; |
| 4093 | struct kgsl_mem_entry *entry; |
Deepak Kumar | 7d13ed2 | 2018-02-23 16:31:46 +0530 | [diff] [blame] | 4094 | int ret = 0; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4095 | |
| 4096 | if (param->id == 0) |
| 4097 | return -EINVAL; |
| 4098 | |
| 4099 | entry = kgsl_sharedmem_find_id(private, param->id); |
| 4100 | if (entry == NULL) |
| 4101 | return -EINVAL; |
| 4102 | |
| 4103 | if (param->flags & KGSL_GPUOBJ_SET_INFO_METADATA) |
| 4104 | copy_metadata(entry, param->metadata, param->metadata_len); |
| 4105 | |
| 4106 | if (param->flags & KGSL_GPUOBJ_SET_INFO_TYPE) { |
Deepak Kumar | 7d13ed2 | 2018-02-23 16:31:46 +0530 | [diff] [blame] | 4107 | if (param->type <= (KGSL_MEMTYPE_MASK >> KGSL_MEMTYPE_SHIFT)) { |
| 4108 | entry->memdesc.flags &= ~((uint64_t) KGSL_MEMTYPE_MASK); |
| 4109 | entry->memdesc.flags |= (uint64_t)((param->type << |
| 4110 | KGSL_MEMTYPE_SHIFT) & KGSL_MEMTYPE_MASK); |
| 4111 | } else |
| 4112 | ret = -EINVAL; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4113 | } |
| 4114 | |
| 4115 | kgsl_mem_entry_put(entry); |
Deepak Kumar | 7d13ed2 | 2018-02-23 16:31:46 +0530 | [diff] [blame] | 4116 | return ret; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4117 | } |
| 4118 | |
| 4119 | /** |
| 4120 | * kgsl_ioctl_timestamp_event - Register a new timestamp event from userspace |
| 4121 | * @dev_priv - pointer to the private device structure |
| 4122 | * @cmd - the ioctl cmd passed from kgsl_ioctl |
| 4123 | * @data - the user data buffer from kgsl_ioctl |
| 4124 | * @returns 0 on success or error code on failure |
| 4125 | */ |
| 4126 | |
| 4127 | long kgsl_ioctl_timestamp_event(struct kgsl_device_private *dev_priv, |
| 4128 | unsigned int cmd, void *data) |
| 4129 | { |
| 4130 | struct kgsl_timestamp_event *param = data; |
| 4131 | int ret; |
| 4132 | |
| 4133 | switch (param->type) { |
| 4134 | case KGSL_TIMESTAMP_EVENT_FENCE: |
| 4135 | ret = kgsl_add_fence_event(dev_priv->device, |
| 4136 | param->context_id, param->timestamp, param->priv, |
| 4137 | param->len, dev_priv); |
| 4138 | break; |
| 4139 | default: |
| 4140 | ret = -EINVAL; |
| 4141 | } |
| 4142 | |
| 4143 | return ret; |
| 4144 | } |
| 4145 | |
| 4146 | static int |
| 4147 | kgsl_mmap_memstore(struct kgsl_device *device, struct vm_area_struct *vma) |
| 4148 | { |
| 4149 | struct kgsl_memdesc *memdesc = &device->memstore; |
| 4150 | int result; |
| 4151 | unsigned int vma_size = vma->vm_end - vma->vm_start; |
| 4152 | |
| 4153 | /* The memstore can only be mapped as read only */ |
| 4154 | |
| 4155 | if (vma->vm_flags & VM_WRITE) |
| 4156 | return -EPERM; |
| 4157 | |
Indira Biruduraju | 1e6b63e | 2020-08-11 15:24:16 +0530 | [diff] [blame] | 4158 | vma->vm_flags &= ~VM_MAYWRITE; |
| 4159 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4160 | if (memdesc->size != vma_size) { |
| 4161 | KGSL_MEM_ERR(device, "memstore bad size: %d should be %llu\n", |
| 4162 | vma_size, memdesc->size); |
| 4163 | return -EINVAL; |
| 4164 | } |
| 4165 | |
| 4166 | vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); |
| 4167 | |
| 4168 | result = remap_pfn_range(vma, vma->vm_start, |
| 4169 | device->memstore.physaddr >> PAGE_SHIFT, |
| 4170 | vma_size, vma->vm_page_prot); |
| 4171 | if (result != 0) |
| 4172 | KGSL_MEM_ERR(device, "remap_pfn_range failed: %d\n", |
| 4173 | result); |
| 4174 | |
| 4175 | return result; |
| 4176 | } |
| 4177 | |
| 4178 | /* |
| 4179 | * kgsl_gpumem_vm_open is called whenever a vma region is copied or split. |
| 4180 | * Increase the refcount to make sure that the accounting stays correct |
| 4181 | */ |
| 4182 | |
| 4183 | static void kgsl_gpumem_vm_open(struct vm_area_struct *vma) |
| 4184 | { |
| 4185 | struct kgsl_mem_entry *entry = vma->vm_private_data; |
| 4186 | |
| 4187 | if (kgsl_mem_entry_get(entry) == 0) |
| 4188 | vma->vm_private_data = NULL; |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 4189 | |
| 4190 | atomic_inc(&entry->map_count); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4191 | } |
| 4192 | |
| 4193 | static int |
| 4194 | kgsl_gpumem_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) |
| 4195 | { |
| 4196 | struct kgsl_mem_entry *entry = vma->vm_private_data; |
| 4197 | |
| 4198 | if (!entry) |
| 4199 | return VM_FAULT_SIGBUS; |
| 4200 | if (!entry->memdesc.ops || !entry->memdesc.ops->vmfault) |
| 4201 | return VM_FAULT_SIGBUS; |
| 4202 | |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 4203 | return entry->memdesc.ops->vmfault(&entry->memdesc, vma, vmf); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4204 | } |
| 4205 | |
| 4206 | static void |
| 4207 | kgsl_gpumem_vm_close(struct vm_area_struct *vma) |
| 4208 | { |
| 4209 | struct kgsl_mem_entry *entry = vma->vm_private_data; |
| 4210 | |
| 4211 | if (!entry) |
| 4212 | return; |
| 4213 | |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 4214 | /* |
| 4215 | * Remove the memdesc from the mapped stat once all the mappings have |
| 4216 | * gone away |
| 4217 | */ |
| 4218 | if (!atomic_dec_return(&entry->map_count)) |
| 4219 | entry->priv->gpumem_mapped -= entry->memdesc.size; |
| 4220 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4221 | kgsl_mem_entry_put(entry); |
| 4222 | } |
| 4223 | |
| 4224 | static const struct vm_operations_struct kgsl_gpumem_vm_ops = { |
| 4225 | .open = kgsl_gpumem_vm_open, |
| 4226 | .fault = kgsl_gpumem_vm_fault, |
| 4227 | .close = kgsl_gpumem_vm_close, |
| 4228 | }; |
| 4229 | |
| 4230 | static int |
| 4231 | get_mmap_entry(struct kgsl_process_private *private, |
| 4232 | struct kgsl_mem_entry **out_entry, unsigned long pgoff, |
| 4233 | unsigned long len) |
| 4234 | { |
| 4235 | int ret = 0; |
| 4236 | struct kgsl_mem_entry *entry; |
| 4237 | |
| 4238 | entry = kgsl_sharedmem_find_id(private, pgoff); |
| 4239 | if (entry == NULL) |
| 4240 | entry = kgsl_sharedmem_find(private, pgoff << PAGE_SHIFT); |
| 4241 | |
| 4242 | if (!entry) |
| 4243 | return -EINVAL; |
| 4244 | |
| 4245 | if (!entry->memdesc.ops || |
| 4246 | !entry->memdesc.ops->vmflags || |
| 4247 | !entry->memdesc.ops->vmfault) { |
| 4248 | ret = -EINVAL; |
| 4249 | goto err_put; |
| 4250 | } |
| 4251 | |
| 4252 | if (entry->memdesc.flags & KGSL_MEMFLAGS_SPARSE_PHYS) { |
| 4253 | if (len != entry->memdesc.size) { |
| 4254 | ret = -EINVAL; |
| 4255 | goto err_put; |
| 4256 | } |
| 4257 | } |
| 4258 | |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 4259 | /* Don't allow ourselves to remap user memory */ |
| 4260 | if (entry->memdesc.flags & KGSL_MEMFLAGS_USERMEM_ADDR) { |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4261 | ret = -EBUSY; |
| 4262 | goto err_put; |
| 4263 | } |
| 4264 | |
| 4265 | if (kgsl_memdesc_use_cpu_map(&entry->memdesc)) { |
| 4266 | if (len != kgsl_memdesc_footprint(&entry->memdesc)) { |
| 4267 | ret = -ERANGE; |
| 4268 | goto err_put; |
| 4269 | } |
| 4270 | } else if (len != kgsl_memdesc_footprint(&entry->memdesc) && |
| 4271 | len != entry->memdesc.size) { |
| 4272 | /* |
| 4273 | * If cpu_map != gpumap then user can map either the |
| 4274 | * footprint or the entry size |
| 4275 | */ |
| 4276 | ret = -ERANGE; |
| 4277 | goto err_put; |
| 4278 | } |
| 4279 | |
| 4280 | *out_entry = entry; |
| 4281 | return 0; |
| 4282 | err_put: |
| 4283 | kgsl_mem_entry_put(entry); |
| 4284 | return ret; |
| 4285 | } |
| 4286 | |
| 4287 | static unsigned long _gpu_set_svm_region(struct kgsl_process_private *private, |
| 4288 | struct kgsl_mem_entry *entry, unsigned long addr, |
| 4289 | unsigned long size) |
| 4290 | { |
| 4291 | int ret; |
| 4292 | |
| 4293 | ret = kgsl_mmu_set_svm_region(private->pagetable, (uint64_t) addr, |
| 4294 | (uint64_t) size); |
| 4295 | |
| 4296 | if (ret != 0) |
| 4297 | return ret; |
| 4298 | |
| 4299 | entry->memdesc.gpuaddr = (uint64_t) addr; |
| 4300 | entry->memdesc.pagetable = private->pagetable; |
| 4301 | |
| 4302 | ret = kgsl_mmu_map(private->pagetable, &entry->memdesc); |
| 4303 | if (ret) { |
| 4304 | kgsl_mmu_put_gpuaddr(&entry->memdesc); |
| 4305 | return ret; |
| 4306 | } |
| 4307 | |
| 4308 | kgsl_memfree_purge(private->pagetable, entry->memdesc.gpuaddr, |
| 4309 | entry->memdesc.size); |
| 4310 | |
| 4311 | return addr; |
| 4312 | } |
| 4313 | |
| 4314 | static unsigned long _gpu_find_svm(struct kgsl_process_private *private, |
| 4315 | unsigned long start, unsigned long end, unsigned long len, |
| 4316 | unsigned int align) |
| 4317 | { |
| 4318 | uint64_t addr = kgsl_mmu_find_svm_region(private->pagetable, |
| 4319 | (uint64_t) start, (uint64_t)end, (uint64_t) len, align); |
| 4320 | |
| 4321 | BUG_ON(!IS_ERR_VALUE((unsigned long)addr) && (addr > ULONG_MAX)); |
| 4322 | |
| 4323 | return (unsigned long) addr; |
| 4324 | } |
| 4325 | |
| 4326 | /* Search top down in the CPU VM region for a free address */ |
| 4327 | static unsigned long _cpu_get_unmapped_area(unsigned long bottom, |
| 4328 | unsigned long top, unsigned long len, unsigned long align) |
| 4329 | { |
| 4330 | struct vm_unmapped_area_info info; |
| 4331 | unsigned long addr, err; |
| 4332 | |
| 4333 | info.flags = VM_UNMAPPED_AREA_TOPDOWN; |
| 4334 | info.low_limit = bottom; |
| 4335 | info.high_limit = top; |
| 4336 | info.length = len; |
| 4337 | info.align_offset = 0; |
| 4338 | info.align_mask = align - 1; |
| 4339 | |
| 4340 | addr = vm_unmapped_area(&info); |
| 4341 | |
| 4342 | if (IS_ERR_VALUE(addr)) |
| 4343 | return addr; |
| 4344 | |
| 4345 | err = security_mmap_addr(addr); |
| 4346 | return err ? err : addr; |
| 4347 | } |
| 4348 | |
| 4349 | static unsigned long _search_range(struct kgsl_process_private *private, |
| 4350 | struct kgsl_mem_entry *entry, |
| 4351 | unsigned long start, unsigned long end, |
| 4352 | unsigned long len, uint64_t align) |
| 4353 | { |
| 4354 | unsigned long cpu, gpu = end, result = -ENOMEM; |
| 4355 | |
| 4356 | while (gpu > start) { |
| 4357 | /* find a new empty spot on the CPU below the last one */ |
| 4358 | cpu = _cpu_get_unmapped_area(start, gpu, len, |
| 4359 | (unsigned long) align); |
| 4360 | if (IS_ERR_VALUE(cpu)) { |
| 4361 | result = cpu; |
| 4362 | break; |
| 4363 | } |
| 4364 | /* try to map it on the GPU */ |
| 4365 | result = _gpu_set_svm_region(private, entry, cpu, len); |
| 4366 | if (!IS_ERR_VALUE(result)) |
| 4367 | break; |
| 4368 | |
| 4369 | trace_kgsl_mem_unmapped_area_collision(entry, cpu, len); |
| 4370 | |
| 4371 | if (cpu <= start) { |
| 4372 | result = -ENOMEM; |
| 4373 | break; |
| 4374 | } |
| 4375 | |
| 4376 | /* move downward to the next empty spot on the GPU */ |
| 4377 | gpu = _gpu_find_svm(private, start, cpu, len, align); |
| 4378 | if (IS_ERR_VALUE(gpu)) { |
| 4379 | result = gpu; |
| 4380 | break; |
| 4381 | } |
| 4382 | |
| 4383 | /* Check that_gpu_find_svm doesn't put us in a loop */ |
| 4384 | if (gpu >= cpu) { |
| 4385 | result = -ENOMEM; |
| 4386 | break; |
| 4387 | } |
| 4388 | |
| 4389 | /* Break if the recommended GPU address is out of range */ |
| 4390 | if (gpu < start) { |
| 4391 | result = -ENOMEM; |
| 4392 | break; |
| 4393 | } |
| 4394 | |
| 4395 | /* |
| 4396 | * Add the length of the chunk to the GPU address to yield the |
| 4397 | * upper bound for the CPU search |
| 4398 | */ |
| 4399 | gpu += len; |
| 4400 | } |
| 4401 | return result; |
| 4402 | } |
| 4403 | |
| 4404 | static unsigned long _get_svm_area(struct kgsl_process_private *private, |
| 4405 | struct kgsl_mem_entry *entry, unsigned long hint, |
| 4406 | unsigned long len, unsigned long flags) |
| 4407 | { |
| 4408 | uint64_t start, end; |
| 4409 | int align_shift = kgsl_memdesc_get_align(&entry->memdesc); |
| 4410 | uint64_t align; |
| 4411 | unsigned long result; |
| 4412 | unsigned long addr; |
| 4413 | |
| 4414 | if (align_shift >= ilog2(SZ_2M)) |
| 4415 | align = SZ_2M; |
| 4416 | else if (align_shift >= ilog2(SZ_1M)) |
| 4417 | align = SZ_1M; |
| 4418 | else if (align_shift >= ilog2(SZ_64K)) |
| 4419 | align = SZ_64K; |
| 4420 | else |
| 4421 | align = SZ_4K; |
| 4422 | |
| 4423 | /* get the GPU pagetable's SVM range */ |
| 4424 | if (kgsl_mmu_svm_range(private->pagetable, &start, &end, |
| 4425 | entry->memdesc.flags)) |
| 4426 | return -ERANGE; |
| 4427 | |
| 4428 | /* now clamp the range based on the CPU's requirements */ |
| 4429 | start = max_t(uint64_t, start, mmap_min_addr); |
| 4430 | end = min_t(uint64_t, end, current->mm->mmap_base); |
| 4431 | if (start >= end) |
| 4432 | return -ERANGE; |
| 4433 | |
| 4434 | if (flags & MAP_FIXED) { |
| 4435 | /* we must use addr 'hint' or fail */ |
| 4436 | return _gpu_set_svm_region(private, entry, hint, len); |
| 4437 | } else if (hint != 0) { |
| 4438 | struct vm_area_struct *vma; |
| 4439 | |
| 4440 | /* |
| 4441 | * See if the hint is usable, if not we will use |
| 4442 | * it as the start point for searching. |
| 4443 | */ |
| 4444 | addr = clamp_t(unsigned long, hint & ~(align - 1), |
| 4445 | start, (end - len) & ~(align - 1)); |
| 4446 | |
| 4447 | vma = find_vma(current->mm, addr); |
| 4448 | |
| 4449 | if (vma == NULL || ((addr + len) <= vma->vm_start)) { |
| 4450 | result = _gpu_set_svm_region(private, entry, addr, len); |
| 4451 | |
| 4452 | /* On failure drop down to keep searching */ |
| 4453 | if (!IS_ERR_VALUE(result)) |
| 4454 | return result; |
| 4455 | } |
| 4456 | } else { |
| 4457 | /* no hint, start search at the top and work down */ |
| 4458 | addr = end & ~(align - 1); |
| 4459 | } |
| 4460 | |
| 4461 | /* |
| 4462 | * Search downwards from the hint first. If that fails we |
| 4463 | * must try to search above it. |
| 4464 | */ |
| 4465 | result = _search_range(private, entry, start, addr, len, align); |
| 4466 | if (IS_ERR_VALUE(result) && hint != 0) |
| 4467 | result = _search_range(private, entry, addr, end, len, align); |
| 4468 | |
| 4469 | return result; |
| 4470 | } |
| 4471 | |
| 4472 | static unsigned long |
| 4473 | kgsl_get_unmapped_area(struct file *file, unsigned long addr, |
| 4474 | unsigned long len, unsigned long pgoff, |
| 4475 | unsigned long flags) |
| 4476 | { |
| 4477 | unsigned long val; |
| 4478 | unsigned long vma_offset = pgoff << PAGE_SHIFT; |
| 4479 | struct kgsl_device_private *dev_priv = file->private_data; |
| 4480 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 4481 | struct kgsl_device *device = dev_priv->device; |
| 4482 | struct kgsl_mem_entry *entry = NULL; |
| 4483 | |
| 4484 | if (vma_offset == (unsigned long) device->memstore.gpuaddr) |
| 4485 | return get_unmapped_area(NULL, addr, len, pgoff, flags); |
| 4486 | |
| 4487 | val = get_mmap_entry(private, &entry, pgoff, len); |
| 4488 | if (val) |
| 4489 | return val; |
| 4490 | |
| 4491 | /* Do not allow CPU mappings for secure buffers */ |
| 4492 | if (kgsl_memdesc_is_secured(&entry->memdesc)) { |
| 4493 | val = -EPERM; |
| 4494 | goto put; |
| 4495 | } |
| 4496 | |
| 4497 | if (!kgsl_memdesc_use_cpu_map(&entry->memdesc)) { |
| 4498 | val = get_unmapped_area(NULL, addr, len, 0, flags); |
| 4499 | if (IS_ERR_VALUE(val)) |
Venkateswara Rao Tadikonda | d57f7e5 | 2017-08-29 11:02:38 +0530 | [diff] [blame] | 4500 | KGSL_DRV_ERR_RATELIMIT(device, |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4501 | "get_unmapped_area: pid %d addr %lx pgoff %lx len %ld failed error %d\n", |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 4502 | pid_nr(private->pid), addr, |
| 4503 | pgoff, len, (int) val); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4504 | } else { |
| 4505 | val = _get_svm_area(private, entry, addr, len, flags); |
| 4506 | if (IS_ERR_VALUE(val)) |
Venkateswara Rao Tadikonda | d57f7e5 | 2017-08-29 11:02:38 +0530 | [diff] [blame] | 4507 | KGSL_DRV_ERR_RATELIMIT(device, |
Hareesh Gundu | ca522a1 | 2017-02-15 16:02:06 +0530 | [diff] [blame] | 4508 | "_get_svm_area: pid %d mmap_base %lx addr %lx pgoff %lx len %ld failed error %d\n", |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 4509 | pid_nr(private->pid), |
| 4510 | current->mm->mmap_base, addr, |
Hareesh Gundu | ca522a1 | 2017-02-15 16:02:06 +0530 | [diff] [blame] | 4511 | pgoff, len, (int) val); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4512 | } |
| 4513 | |
| 4514 | put: |
| 4515 | kgsl_mem_entry_put(entry); |
| 4516 | return val; |
| 4517 | } |
| 4518 | |
| 4519 | static int kgsl_mmap(struct file *file, struct vm_area_struct *vma) |
| 4520 | { |
| 4521 | unsigned int ret, cache; |
| 4522 | unsigned long vma_offset = vma->vm_pgoff << PAGE_SHIFT; |
| 4523 | struct kgsl_device_private *dev_priv = file->private_data; |
| 4524 | struct kgsl_process_private *private = dev_priv->process_priv; |
| 4525 | struct kgsl_mem_entry *entry = NULL; |
| 4526 | struct kgsl_device *device = dev_priv->device; |
| 4527 | |
| 4528 | /* Handle leagacy behavior for memstore */ |
| 4529 | |
| 4530 | if (vma_offset == (unsigned long) device->memstore.gpuaddr) |
| 4531 | return kgsl_mmap_memstore(device, vma); |
| 4532 | |
| 4533 | /* |
| 4534 | * The reference count on the entry that we get from |
| 4535 | * get_mmap_entry() will be held until kgsl_gpumem_vm_close(). |
| 4536 | */ |
| 4537 | ret = get_mmap_entry(private, &entry, vma->vm_pgoff, |
| 4538 | vma->vm_end - vma->vm_start); |
| 4539 | if (ret) |
| 4540 | return ret; |
| 4541 | |
| 4542 | vma->vm_flags |= entry->memdesc.ops->vmflags; |
| 4543 | |
| 4544 | vma->vm_private_data = entry; |
| 4545 | |
| 4546 | /* Determine user-side caching policy */ |
| 4547 | |
| 4548 | cache = kgsl_memdesc_get_cachemode(&entry->memdesc); |
| 4549 | |
| 4550 | switch (cache) { |
| 4551 | case KGSL_CACHEMODE_UNCACHED: |
| 4552 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
| 4553 | break; |
| 4554 | case KGSL_CACHEMODE_WRITETHROUGH: |
| 4555 | vma->vm_page_prot = pgprot_writethroughcache(vma->vm_page_prot); |
| 4556 | if (pgprot_val(vma->vm_page_prot) == |
| 4557 | pgprot_val(pgprot_writebackcache(vma->vm_page_prot))) |
| 4558 | WARN_ONCE(1, "WRITETHROUGH is deprecated for arm64"); |
| 4559 | break; |
| 4560 | case KGSL_CACHEMODE_WRITEBACK: |
| 4561 | vma->vm_page_prot = pgprot_writebackcache(vma->vm_page_prot); |
| 4562 | break; |
| 4563 | case KGSL_CACHEMODE_WRITECOMBINE: |
| 4564 | default: |
| 4565 | vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); |
| 4566 | break; |
| 4567 | } |
| 4568 | |
| 4569 | vma->vm_ops = &kgsl_gpumem_vm_ops; |
| 4570 | |
| 4571 | if (cache == KGSL_CACHEMODE_WRITEBACK |
| 4572 | || cache == KGSL_CACHEMODE_WRITETHROUGH) { |
| 4573 | int i; |
| 4574 | unsigned long addr = vma->vm_start; |
| 4575 | struct kgsl_memdesc *m = &entry->memdesc; |
| 4576 | |
| 4577 | for (i = 0; i < m->page_count; i++) { |
| 4578 | struct page *page = m->pages[i]; |
| 4579 | |
| 4580 | vm_insert_page(vma, addr, page); |
| 4581 | addr += PAGE_SIZE; |
| 4582 | } |
| 4583 | } |
| 4584 | |
| 4585 | vma->vm_file = file; |
| 4586 | |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 4587 | if (atomic_inc_return(&entry->map_count) == 1) |
| 4588 | entry->priv->gpumem_mapped += entry->memdesc.size; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4589 | |
Jordan Crouse | 6bce65c | 2020-12-28 16:06:42 +0530 | [diff] [blame] | 4590 | trace_kgsl_mem_mmap(entry, vma->vm_start); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4591 | return 0; |
| 4592 | } |
| 4593 | |
| 4594 | static irqreturn_t kgsl_irq_handler(int irq, void *data) |
| 4595 | { |
| 4596 | struct kgsl_device *device = data; |
| 4597 | |
| 4598 | return device->ftbl->irq_handler(device); |
| 4599 | |
| 4600 | } |
| 4601 | |
| 4602 | #define KGSL_READ_MESSAGE "OH HAI GPU\n" |
| 4603 | |
| 4604 | static ssize_t kgsl_read(struct file *filep, char __user *buf, size_t count, |
| 4605 | loff_t *pos) |
| 4606 | { |
| 4607 | return simple_read_from_buffer(buf, count, pos, |
| 4608 | KGSL_READ_MESSAGE, strlen(KGSL_READ_MESSAGE) + 1); |
| 4609 | } |
| 4610 | |
| 4611 | static const struct file_operations kgsl_fops = { |
| 4612 | .owner = THIS_MODULE, |
| 4613 | .release = kgsl_release, |
| 4614 | .open = kgsl_open, |
| 4615 | .mmap = kgsl_mmap, |
| 4616 | .read = kgsl_read, |
| 4617 | .get_unmapped_area = kgsl_get_unmapped_area, |
| 4618 | .unlocked_ioctl = kgsl_ioctl, |
| 4619 | .compat_ioctl = kgsl_compat_ioctl, |
| 4620 | }; |
| 4621 | |
| 4622 | struct kgsl_driver kgsl_driver = { |
| 4623 | .process_mutex = __MUTEX_INITIALIZER(kgsl_driver.process_mutex), |
| 4624 | .ptlock = __SPIN_LOCK_UNLOCKED(kgsl_driver.ptlock), |
| 4625 | .devlock = __MUTEX_INITIALIZER(kgsl_driver.devlock), |
| 4626 | /* |
| 4627 | * Full cache flushes are faster than line by line on at least |
| 4628 | * 8064 and 8974 once the region to be flushed is > 16mb. |
| 4629 | */ |
| 4630 | .full_cache_threshold = SZ_16M, |
| 4631 | |
| 4632 | .stats.vmalloc = ATOMIC_LONG_INIT(0), |
| 4633 | .stats.vmalloc_max = ATOMIC_LONG_INIT(0), |
| 4634 | .stats.page_alloc = ATOMIC_LONG_INIT(0), |
| 4635 | .stats.page_alloc_max = ATOMIC_LONG_INIT(0), |
| 4636 | .stats.coherent = ATOMIC_LONG_INIT(0), |
| 4637 | .stats.coherent_max = ATOMIC_LONG_INIT(0), |
| 4638 | .stats.secure = ATOMIC_LONG_INIT(0), |
| 4639 | .stats.secure_max = ATOMIC_LONG_INIT(0), |
| 4640 | .stats.mapped = ATOMIC_LONG_INIT(0), |
| 4641 | .stats.mapped_max = ATOMIC_LONG_INIT(0), |
| 4642 | }; |
| 4643 | EXPORT_SYMBOL(kgsl_driver); |
| 4644 | |
| 4645 | static void _unregister_device(struct kgsl_device *device) |
| 4646 | { |
| 4647 | int minor; |
| 4648 | |
| 4649 | mutex_lock(&kgsl_driver.devlock); |
| 4650 | for (minor = 0; minor < KGSL_DEVICE_MAX; minor++) { |
| 4651 | if (device == kgsl_driver.devp[minor]) |
| 4652 | break; |
| 4653 | } |
| 4654 | if (minor != KGSL_DEVICE_MAX) { |
| 4655 | device_destroy(kgsl_driver.class, |
| 4656 | MKDEV(MAJOR(kgsl_driver.major), minor)); |
| 4657 | kgsl_driver.devp[minor] = NULL; |
| 4658 | } |
| 4659 | mutex_unlock(&kgsl_driver.devlock); |
| 4660 | } |
| 4661 | |
| 4662 | static int _register_device(struct kgsl_device *device) |
| 4663 | { |
| 4664 | int minor, ret; |
| 4665 | dev_t dev; |
| 4666 | |
| 4667 | /* Find a minor for the device */ |
| 4668 | |
| 4669 | mutex_lock(&kgsl_driver.devlock); |
| 4670 | for (minor = 0; minor < KGSL_DEVICE_MAX; minor++) { |
| 4671 | if (kgsl_driver.devp[minor] == NULL) { |
| 4672 | kgsl_driver.devp[minor] = device; |
| 4673 | break; |
| 4674 | } |
| 4675 | } |
| 4676 | mutex_unlock(&kgsl_driver.devlock); |
| 4677 | |
| 4678 | if (minor == KGSL_DEVICE_MAX) { |
| 4679 | KGSL_CORE_ERR("minor devices exhausted\n"); |
| 4680 | return -ENODEV; |
| 4681 | } |
| 4682 | |
| 4683 | /* Create the device */ |
| 4684 | dev = MKDEV(MAJOR(kgsl_driver.major), minor); |
| 4685 | device->dev = device_create(kgsl_driver.class, |
| 4686 | &device->pdev->dev, |
| 4687 | dev, device, |
| 4688 | device->name); |
| 4689 | |
| 4690 | if (IS_ERR(device->dev)) { |
| 4691 | mutex_lock(&kgsl_driver.devlock); |
| 4692 | kgsl_driver.devp[minor] = NULL; |
| 4693 | mutex_unlock(&kgsl_driver.devlock); |
| 4694 | ret = PTR_ERR(device->dev); |
| 4695 | KGSL_CORE_ERR("device_create(%s): %d\n", device->name, ret); |
| 4696 | return ret; |
| 4697 | } |
| 4698 | |
| 4699 | dev_set_drvdata(&device->pdev->dev, device); |
| 4700 | return 0; |
| 4701 | } |
| 4702 | |
| 4703 | int kgsl_device_platform_probe(struct kgsl_device *device) |
| 4704 | { |
| 4705 | int status = -EINVAL; |
| 4706 | struct resource *res; |
| 4707 | int cpu; |
| 4708 | |
| 4709 | status = _register_device(device); |
| 4710 | if (status) |
| 4711 | return status; |
| 4712 | |
| 4713 | /* Initialize logging first, so that failures below actually print. */ |
| 4714 | kgsl_device_debugfs_init(device); |
| 4715 | |
Harshdeep Dhatt | 67d23bf | 2019-09-09 11:05:48 -0600 | [diff] [blame] | 4716 | /* Disable the sparse ioctl invocation as they are not used */ |
| 4717 | device->flags &= ~KGSL_FLAG_SPARSE; |
| 4718 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4719 | status = kgsl_pwrctrl_init(device); |
| 4720 | if (status) |
| 4721 | goto error; |
| 4722 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4723 | /* |
| 4724 | * Check if a shadermemname is defined, and then get shader memory |
| 4725 | * details including shader memory starting physical address |
| 4726 | * and shader memory length |
| 4727 | */ |
| 4728 | if (device->shadermemname != NULL) { |
| 4729 | res = platform_get_resource_byname(device->pdev, IORESOURCE_MEM, |
| 4730 | device->shadermemname); |
| 4731 | |
| 4732 | if (res == NULL) { |
| 4733 | KGSL_DRV_WARN(device, |
| 4734 | "Shader memory: platform_get_resource_byname failed\n"); |
| 4735 | } |
| 4736 | |
| 4737 | else { |
| 4738 | device->shader_mem_phys = res->start; |
| 4739 | device->shader_mem_len = resource_size(res); |
| 4740 | } |
| 4741 | |
| 4742 | if (!devm_request_mem_region(device->dev, |
| 4743 | device->shader_mem_phys, |
| 4744 | device->shader_mem_len, |
| 4745 | device->name)) { |
| 4746 | KGSL_DRV_WARN(device, "request_mem_region_failed\n"); |
| 4747 | } |
| 4748 | } |
| 4749 | |
| 4750 | if (!devm_request_mem_region(device->dev, device->reg_phys, |
| 4751 | device->reg_len, device->name)) { |
| 4752 | KGSL_DRV_ERR(device, "request_mem_region failed\n"); |
| 4753 | status = -ENODEV; |
| 4754 | goto error_pwrctrl_close; |
| 4755 | } |
| 4756 | |
| 4757 | device->reg_virt = devm_ioremap(device->dev, device->reg_phys, |
| 4758 | device->reg_len); |
| 4759 | |
| 4760 | if (device->reg_virt == NULL) { |
| 4761 | KGSL_DRV_ERR(device, "ioremap failed\n"); |
| 4762 | status = -ENODEV; |
| 4763 | goto error_pwrctrl_close; |
| 4764 | } |
| 4765 | /*acquire interrupt */ |
| 4766 | device->pwrctrl.interrupt_num = |
| 4767 | platform_get_irq_byname(device->pdev, device->pwrctrl.irq_name); |
| 4768 | |
| 4769 | if (device->pwrctrl.interrupt_num <= 0) { |
| 4770 | KGSL_DRV_ERR(device, "platform_get_irq_byname failed: %d\n", |
| 4771 | device->pwrctrl.interrupt_num); |
| 4772 | status = -EINVAL; |
| 4773 | goto error_pwrctrl_close; |
| 4774 | } |
| 4775 | |
| 4776 | status = devm_request_irq(device->dev, device->pwrctrl.interrupt_num, |
| 4777 | kgsl_irq_handler, IRQF_TRIGGER_HIGH, |
| 4778 | device->name, device); |
| 4779 | if (status) { |
| 4780 | KGSL_DRV_ERR(device, "request_irq(%d) failed: %d\n", |
| 4781 | device->pwrctrl.interrupt_num, status); |
| 4782 | goto error_pwrctrl_close; |
| 4783 | } |
| 4784 | disable_irq(device->pwrctrl.interrupt_num); |
| 4785 | |
| 4786 | KGSL_DRV_INFO(device, |
| 4787 | "dev_id %d regs phys 0x%08lx size 0x%08x\n", |
| 4788 | device->id, device->reg_phys, device->reg_len); |
| 4789 | |
| 4790 | rwlock_init(&device->context_lock); |
Hareesh Gundu | 2eb74d7 | 2017-06-07 14:50:15 +0530 | [diff] [blame] | 4791 | spin_lock_init(&device->submit_lock); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4792 | |
| 4793 | setup_timer(&device->idle_timer, kgsl_timer, (unsigned long) device); |
| 4794 | |
| 4795 | status = kgsl_mmu_probe(device, kgsl_mmu_type); |
| 4796 | if (status != 0) |
| 4797 | goto error_pwrctrl_close; |
| 4798 | |
| 4799 | /* Check to see if our device can perform DMA correctly */ |
| 4800 | status = dma_set_coherent_mask(&device->pdev->dev, KGSL_DMA_BIT_MASK); |
| 4801 | if (status) |
| 4802 | goto error_close_mmu; |
| 4803 | |
| 4804 | /* Initialize the memory pools */ |
| 4805 | kgsl_init_page_pools(device->pdev); |
| 4806 | |
| 4807 | status = kgsl_allocate_global(device, &device->memstore, |
| 4808 | KGSL_MEMSTORE_SIZE, 0, KGSL_MEMDESC_CONTIG, "memstore"); |
| 4809 | |
| 4810 | if (status != 0) |
| 4811 | goto error_close_mmu; |
| 4812 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4813 | /* |
| 4814 | * The default request type PM_QOS_REQ_ALL_CORES is |
| 4815 | * applicable to all CPU cores that are online and |
| 4816 | * would have a power impact when there are more |
| 4817 | * number of CPUs. PM_QOS_REQ_AFFINE_IRQ request |
| 4818 | * type shall update/apply the vote only to that CPU to |
| 4819 | * which IRQ's affinity is set to. |
| 4820 | */ |
| 4821 | #ifdef CONFIG_SMP |
| 4822 | |
| 4823 | device->pwrctrl.pm_qos_req_dma.type = PM_QOS_REQ_AFFINE_IRQ; |
| 4824 | device->pwrctrl.pm_qos_req_dma.irq = device->pwrctrl.interrupt_num; |
| 4825 | |
| 4826 | #endif |
| 4827 | pm_qos_add_request(&device->pwrctrl.pm_qos_req_dma, |
| 4828 | PM_QOS_CPU_DMA_LATENCY, |
| 4829 | PM_QOS_DEFAULT_VALUE); |
| 4830 | |
| 4831 | if (device->pwrctrl.l2pc_cpus_mask) { |
| 4832 | |
| 4833 | device->pwrctrl.l2pc_cpus_qos.type = |
| 4834 | PM_QOS_REQ_AFFINE_CORES; |
| 4835 | cpumask_empty(&device->pwrctrl.l2pc_cpus_qos.cpus_affine); |
| 4836 | for_each_possible_cpu(cpu) { |
| 4837 | if ((1 << cpu) & device->pwrctrl.l2pc_cpus_mask) |
| 4838 | cpumask_set_cpu(cpu, &device->pwrctrl. |
| 4839 | l2pc_cpus_qos.cpus_affine); |
| 4840 | } |
| 4841 | |
| 4842 | pm_qos_add_request(&device->pwrctrl.l2pc_cpus_qos, |
| 4843 | PM_QOS_CPU_DMA_LATENCY, |
| 4844 | PM_QOS_DEFAULT_VALUE); |
| 4845 | } |
| 4846 | |
| 4847 | device->events_wq = alloc_workqueue("kgsl-events", |
| 4848 | WQ_UNBOUND | WQ_MEM_RECLAIM | WQ_SYSFS, 0); |
| 4849 | |
| 4850 | /* Initialize the snapshot engine */ |
| 4851 | kgsl_device_snapshot_init(device); |
| 4852 | |
| 4853 | /* Initialize common sysfs entries */ |
| 4854 | kgsl_pwrctrl_init_sysfs(device); |
| 4855 | |
| 4856 | return 0; |
| 4857 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4858 | error_close_mmu: |
| 4859 | kgsl_mmu_close(device); |
| 4860 | error_pwrctrl_close: |
| 4861 | kgsl_pwrctrl_close(device); |
| 4862 | error: |
Lynus Vaz | 519dacfd | 2017-02-14 12:17:37 +0530 | [diff] [blame] | 4863 | kgsl_device_debugfs_close(device); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4864 | _unregister_device(device); |
| 4865 | return status; |
| 4866 | } |
| 4867 | EXPORT_SYMBOL(kgsl_device_platform_probe); |
| 4868 | |
| 4869 | void kgsl_device_platform_remove(struct kgsl_device *device) |
| 4870 | { |
| 4871 | destroy_workqueue(device->events_wq); |
| 4872 | |
| 4873 | kgsl_device_snapshot_close(device); |
| 4874 | |
| 4875 | kgsl_exit_page_pools(); |
| 4876 | |
| 4877 | kgsl_pwrctrl_uninit_sysfs(device); |
| 4878 | |
| 4879 | pm_qos_remove_request(&device->pwrctrl.pm_qos_req_dma); |
| 4880 | if (device->pwrctrl.l2pc_cpus_mask) |
| 4881 | pm_qos_remove_request(&device->pwrctrl.l2pc_cpus_qos); |
| 4882 | |
| 4883 | idr_destroy(&device->context_idr); |
| 4884 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4885 | kgsl_free_global(device, &device->memstore); |
| 4886 | |
| 4887 | kgsl_mmu_close(device); |
| 4888 | |
| 4889 | kgsl_pwrctrl_close(device); |
| 4890 | |
Lynus Vaz | 519dacfd | 2017-02-14 12:17:37 +0530 | [diff] [blame] | 4891 | kgsl_device_debugfs_close(device); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4892 | _unregister_device(device); |
| 4893 | } |
| 4894 | EXPORT_SYMBOL(kgsl_device_platform_remove); |
| 4895 | |
| 4896 | static void kgsl_core_exit(void) |
| 4897 | { |
| 4898 | kgsl_events_exit(); |
| 4899 | kgsl_core_debugfs_close(); |
| 4900 | |
| 4901 | /* |
| 4902 | * We call kgsl_sharedmem_uninit_sysfs() and device_unregister() |
| 4903 | * only if kgsl_driver.virtdev has been populated. |
| 4904 | * We check at least one member of kgsl_driver.virtdev to |
| 4905 | * see if it is not NULL (and thus, has been populated). |
| 4906 | */ |
| 4907 | if (kgsl_driver.virtdev.class) { |
| 4908 | kgsl_sharedmem_uninit_sysfs(); |
| 4909 | device_unregister(&kgsl_driver.virtdev); |
| 4910 | } |
| 4911 | |
| 4912 | if (kgsl_driver.class) { |
| 4913 | class_destroy(kgsl_driver.class); |
| 4914 | kgsl_driver.class = NULL; |
| 4915 | } |
| 4916 | |
Tarun Karra | 2b8b363 | 2016-11-14 16:38:27 -0800 | [diff] [blame] | 4917 | kgsl_drawobjs_cache_exit(); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4918 | |
| 4919 | kgsl_memfree_exit(); |
| 4920 | unregister_chrdev_region(kgsl_driver.major, KGSL_DEVICE_MAX); |
| 4921 | } |
| 4922 | |
| 4923 | static int __init kgsl_core_init(void) |
| 4924 | { |
| 4925 | int result = 0; |
Tim Murray | 8504043 | 2017-02-20 15:59:32 +0530 | [diff] [blame] | 4926 | struct sched_param param = { .sched_priority = 2 }; |
| 4927 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4928 | /* alloc major and minor device numbers */ |
| 4929 | result = alloc_chrdev_region(&kgsl_driver.major, 0, KGSL_DEVICE_MAX, |
| 4930 | "kgsl"); |
| 4931 | |
| 4932 | if (result < 0) { |
| 4933 | |
| 4934 | KGSL_CORE_ERR("alloc_chrdev_region failed err = %d\n", result); |
| 4935 | goto err; |
| 4936 | } |
| 4937 | |
| 4938 | cdev_init(&kgsl_driver.cdev, &kgsl_fops); |
| 4939 | kgsl_driver.cdev.owner = THIS_MODULE; |
| 4940 | kgsl_driver.cdev.ops = &kgsl_fops; |
| 4941 | result = cdev_add(&kgsl_driver.cdev, MKDEV(MAJOR(kgsl_driver.major), 0), |
| 4942 | KGSL_DEVICE_MAX); |
| 4943 | |
| 4944 | if (result) { |
| 4945 | KGSL_CORE_ERR("kgsl: cdev_add() failed, dev_num= %d, result= %d\n", |
| 4946 | kgsl_driver.major, result); |
| 4947 | goto err; |
| 4948 | } |
| 4949 | |
| 4950 | kgsl_driver.class = class_create(THIS_MODULE, "kgsl"); |
| 4951 | |
| 4952 | if (IS_ERR(kgsl_driver.class)) { |
| 4953 | result = PTR_ERR(kgsl_driver.class); |
| 4954 | KGSL_CORE_ERR("failed to create class for kgsl"); |
| 4955 | goto err; |
| 4956 | } |
| 4957 | |
| 4958 | /* |
| 4959 | * Make a virtual device for managing core related things |
| 4960 | * in sysfs |
| 4961 | */ |
| 4962 | kgsl_driver.virtdev.class = kgsl_driver.class; |
| 4963 | dev_set_name(&kgsl_driver.virtdev, "kgsl"); |
| 4964 | result = device_register(&kgsl_driver.virtdev); |
| 4965 | if (result) { |
| 4966 | KGSL_CORE_ERR("driver_register failed\n"); |
| 4967 | goto err; |
| 4968 | } |
| 4969 | |
| 4970 | /* Make kobjects in the virtual device for storing statistics */ |
| 4971 | |
| 4972 | kgsl_driver.ptkobj = |
| 4973 | kobject_create_and_add("pagetables", |
| 4974 | &kgsl_driver.virtdev.kobj); |
| 4975 | |
| 4976 | kgsl_driver.prockobj = |
| 4977 | kobject_create_and_add("proc", |
| 4978 | &kgsl_driver.virtdev.kobj); |
| 4979 | |
| 4980 | kgsl_core_debugfs_init(); |
| 4981 | |
| 4982 | kgsl_sharedmem_init_sysfs(); |
| 4983 | |
| 4984 | INIT_LIST_HEAD(&kgsl_driver.process_list); |
| 4985 | |
| 4986 | INIT_LIST_HEAD(&kgsl_driver.pagetable_list); |
| 4987 | |
| 4988 | kgsl_driver.workqueue = alloc_workqueue("kgsl-workqueue", |
| 4989 | WQ_UNBOUND | WQ_MEM_RECLAIM | WQ_SYSFS, 0); |
| 4990 | |
| 4991 | kgsl_driver.mem_workqueue = alloc_workqueue("kgsl-mementry", |
Hareesh Gundu | 615439d | 2017-06-16 17:06:57 +0530 | [diff] [blame] | 4992 | WQ_UNBOUND | WQ_MEM_RECLAIM, 0); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 4993 | |
Tim Murray | 8504043 | 2017-02-20 15:59:32 +0530 | [diff] [blame] | 4994 | kthread_init_worker(&kgsl_driver.worker); |
| 4995 | |
| 4996 | kgsl_driver.worker_thread = kthread_run(kthread_worker_fn, |
| 4997 | &kgsl_driver.worker, "kgsl_worker_thread"); |
| 4998 | |
| 4999 | if (IS_ERR(kgsl_driver.worker_thread)) { |
| 5000 | pr_err("unable to start kgsl thread\n"); |
| 5001 | goto err; |
| 5002 | } |
| 5003 | |
| 5004 | sched_setscheduler(kgsl_driver.worker_thread, SCHED_FIFO, ¶m); |
| 5005 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 5006 | kgsl_events_init(); |
| 5007 | |
Tarun Karra | 2b8b363 | 2016-11-14 16:38:27 -0800 | [diff] [blame] | 5008 | result = kgsl_drawobjs_cache_init(); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 5009 | if (result) |
| 5010 | goto err; |
| 5011 | |
| 5012 | kgsl_memfree_init(); |
| 5013 | |
| 5014 | return 0; |
| 5015 | |
| 5016 | err: |
| 5017 | kgsl_core_exit(); |
| 5018 | return result; |
| 5019 | } |
| 5020 | |
| 5021 | module_init(kgsl_core_init); |
| 5022 | module_exit(kgsl_core_exit); |
| 5023 | |
| 5024 | MODULE_DESCRIPTION("MSM GPU driver"); |
| 5025 | MODULE_LICENSE("GPL"); |