Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/drm/drm_memory.h
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1 /* drm_memory.h -- Memory management wrappers for DRM -*- linux-c -*- 2 * Created: Thu Feb 4 14:00:34 1999 by faith@valinux.com 3 * 4 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. 5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 6 * All Rights Reserved. 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a 9 * copy of this software and associated documentation files (the "Software"), 10 * to deal in the Software without restriction, including without limitation 11 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 12 * and/or sell copies of the Software, and to permit persons to whom the 13 * Software is furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice (including the next 16 * paragraph) shall be included in all copies or substantial portions of the 17 * Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 22 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 25 * OTHER DEALINGS IN THE SOFTWARE. 26 * 27 * Authors: 28 * Rickard E. (Rik) Faith <faith@valinux.com> 29 * Gareth Hughes <gareth@valinux.com> 30 * 31 * $FreeBSD: releng/5.0/sys/dev/drm/drm_memory.h 107625 2002-12-04 23:39:05Z anholt $ 32 */ 33 34 #define __NO_VERSION__ 35 #ifdef __linux__ 36 #include <linux/config.h> 37 #endif /* __linux__ */ 38 #include "dev/drm/drmP.h" 39 #ifdef __linux__ 40 #include <linux/wrapper.h> 41 #endif /* __linux__ */ 42 #ifdef __FreeBSD__ 43 #include <vm/vm.h> 44 #include <vm/pmap.h> 45 #if __REALLY_HAVE_AGP 46 #include <sys/agpio.h> 47 #endif 48 49 #define malloctype DRM(M_DRM) 50 /* The macros confliced in the MALLOC_DEFINE */ 51 52 MALLOC_DEFINE(malloctype, "drm", "DRM Data Structures"); 53 54 #undef malloctype 55 #endif /* __FreeBSD__ */ 56 57 typedef struct drm_mem_stats { 58 const char *name; 59 int succeed_count; 60 int free_count; 61 int fail_count; 62 unsigned long bytes_allocated; 63 unsigned long bytes_freed; 64 } drm_mem_stats_t; 65 66 #ifdef __linux__ 67 static spinlock_t DRM(mem_lock) = SPIN_LOCK_UNLOCKED; 68 #endif /* __linux__ */ 69 #ifdef __FreeBSD__ 70 static DRM_OS_SPINTYPE DRM(mem_lock); 71 #endif /* __FreeBSD__ */ 72 static unsigned long DRM(ram_available) = 0; /* In pages */ 73 static unsigned long DRM(ram_used) = 0; 74 static drm_mem_stats_t DRM(mem_stats)[] = { 75 [DRM_MEM_DMA] = { "dmabufs" }, 76 [DRM_MEM_SAREA] = { "sareas" }, 77 [DRM_MEM_DRIVER] = { "driver" }, 78 [DRM_MEM_MAGIC] = { "magic" }, 79 [DRM_MEM_IOCTLS] = { "ioctltab" }, 80 [DRM_MEM_MAPS] = { "maplist" }, 81 [DRM_MEM_VMAS] = { "vmalist" }, 82 [DRM_MEM_BUFS] = { "buflist" }, 83 [DRM_MEM_SEGS] = { "seglist" }, 84 [DRM_MEM_PAGES] = { "pagelist" }, 85 [DRM_MEM_FILES] = { "files" }, 86 [DRM_MEM_QUEUES] = { "queues" }, 87 [DRM_MEM_CMDS] = { "commands" }, 88 [DRM_MEM_MAPPINGS] = { "mappings" }, 89 [DRM_MEM_BUFLISTS] = { "buflists" }, 90 [DRM_MEM_AGPLISTS] = { "agplist" }, 91 [DRM_MEM_SGLISTS] = { "sglist" }, 92 [DRM_MEM_TOTALAGP] = { "totalagp" }, 93 [DRM_MEM_BOUNDAGP] = { "boundagp" }, 94 [DRM_MEM_CTXBITMAP] = { "ctxbitmap"}, 95 [DRM_MEM_STUB] = { "stub" }, 96 { NULL, 0, } /* Last entry must be null */ 97 }; 98 99 void DRM(mem_init)(void) 100 { 101 drm_mem_stats_t *mem; 102 #ifdef __linux__ 103 struct sysinfo si; 104 #endif /* __linux__ */ 105 106 #ifdef __FreeBSD__ 107 DRM_OS_SPININIT(DRM(mem_lock), "drm memory"); 108 #endif /* __FreeBSD__ */ 109 110 for (mem = DRM(mem_stats); mem->name; ++mem) { 111 mem->succeed_count = 0; 112 mem->free_count = 0; 113 mem->fail_count = 0; 114 mem->bytes_allocated = 0; 115 mem->bytes_freed = 0; 116 } 117 118 #ifdef __linux__ 119 si_meminfo(&si); 120 DRM(ram_available) = si.totalram; 121 #endif /* __linux__ */ 122 #ifdef __FreeBSD__ 123 DRM(ram_available) = 0; /* si.totalram */ 124 #endif /* __FreeBSD__ */ 125 DRM(ram_used) = 0; 126 } 127 128 #ifdef __FreeBSD__ 129 static int 130 DRM(_mem_info)(drm_mem_stats_t *stats, struct sysctl_oid *oidp, void *arg1, 131 int arg2, struct sysctl_req *req) 132 { 133 drm_mem_stats_t *pt; 134 char buf[128]; 135 int error; 136 137 DRM_SYSCTL_PRINT(" total counts " 138 " | outstanding \n"); 139 DRM_SYSCTL_PRINT("type alloc freed fail bytes freed" 140 " | allocs bytes\n\n"); 141 DRM_SYSCTL_PRINT("%-9.9s %5d %5d %4d %10lu |\n", 142 "system", 0, 0, 0, DRM(ram_available)); 143 DRM_SYSCTL_PRINT("%-9.9s %5d %5d %4d %10lu |\n", 144 "locked", 0, 0, 0, DRM(ram_used)); 145 DRM_SYSCTL_PRINT("\n"); 146 for (pt = stats; pt->name; pt++) { 147 DRM_SYSCTL_PRINT("%-9.9s %5d %5d %4d %10lu %10lu | %6d %10ld\n", 148 pt->name, 149 pt->succeed_count, 150 pt->free_count, 151 pt->fail_count, 152 pt->bytes_allocated, 153 pt->bytes_freed, 154 pt->succeed_count - pt->free_count, 155 (long)pt->bytes_allocated 156 - (long)pt->bytes_freed); 157 } 158 SYSCTL_OUT(req, "", 1); 159 160 return 0; 161 } 162 163 int DRM(mem_info) DRM_SYSCTL_HANDLER_ARGS 164 { 165 int ret; 166 drm_mem_stats_t *stats; 167 168 stats = malloc(sizeof(DRM(mem_stats)), DRM(M_DRM), M_NOWAIT); 169 if (stats == NULL) 170 return ENOMEM; 171 172 DRM_OS_SPINLOCK(&DRM(mem_lock)); 173 bcopy(DRM(mem_stats), stats, sizeof(DRM(mem_stats))); 174 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 175 176 ret = DRM(_mem_info)(stats, oidp, arg1, arg2, req); 177 178 free(stats, DRM(M_DRM)); 179 return ret; 180 } 181 #endif /* __FreeBSD__ */ 182 183 void *DRM(alloc)(size_t size, int area) 184 { 185 void *pt; 186 187 if (!size) { 188 DRM_MEM_ERROR(area, "Allocating 0 bytes\n"); 189 return NULL; 190 } 191 192 #ifdef __linux__ 193 if (!(pt = kmalloc(size, GFP_KERNEL))) { 194 #endif /* __linux__ */ 195 #ifdef __FreeBSD__ 196 if (!(pt = malloc(size, DRM(M_DRM), M_NOWAIT))) { 197 #endif /* __FreeBSD__ */ 198 DRM_OS_SPINLOCK(&DRM(mem_lock)); 199 ++DRM(mem_stats)[area].fail_count; 200 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 201 return NULL; 202 } 203 DRM_OS_SPINLOCK(&DRM(mem_lock)); 204 ++DRM(mem_stats)[area].succeed_count; 205 DRM(mem_stats)[area].bytes_allocated += size; 206 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 207 return pt; 208 } 209 210 void *DRM(realloc)(void *oldpt, size_t oldsize, size_t size, int area) 211 { 212 void *pt; 213 214 if (!(pt = DRM(alloc)(size, area))) return NULL; 215 if (oldpt && oldsize) { 216 memcpy(pt, oldpt, oldsize); 217 DRM(free)(oldpt, oldsize, area); 218 } 219 return pt; 220 } 221 222 char *DRM(strdup)(const char *s, int area) 223 { 224 char *pt; 225 int length = s ? strlen(s) : 0; 226 227 if (!(pt = DRM(alloc)(length+1, area))) return NULL; 228 strcpy(pt, s); 229 return pt; 230 } 231 232 void DRM(strfree)(char *s, int area) 233 { 234 unsigned int size; 235 236 if (!s) return; 237 238 size = 1 + strlen(s); 239 DRM(free)((void *)s, size, area); 240 } 241 242 void DRM(free)(void *pt, size_t size, int area) 243 { 244 int alloc_count; 245 int free_count; 246 247 if (!pt) DRM_MEM_ERROR(area, "Attempt to free NULL pointer\n"); 248 #ifdef __linux__ 249 else kfree(pt); 250 #endif /* __linux__ */ 251 #ifdef __FreeBSD__ 252 else free(pt, DRM(M_DRM)); 253 #endif /* __FreeBSD__ */ 254 DRM_OS_SPINLOCK(&DRM(mem_lock)); 255 DRM(mem_stats)[area].bytes_freed += size; 256 free_count = ++DRM(mem_stats)[area].free_count; 257 alloc_count = DRM(mem_stats)[area].succeed_count; 258 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 259 if (free_count > alloc_count) { 260 DRM_MEM_ERROR(area, "Excess frees: %d frees, %d allocs\n", 261 free_count, alloc_count); 262 } 263 } 264 265 unsigned long DRM(alloc_pages)(int order, int area) 266 { 267 #ifdef __linux__ 268 unsigned long address; 269 unsigned long addr; 270 unsigned int sz; 271 #endif /* __linux__ */ 272 #ifdef __FreeBSD__ 273 vm_offset_t address; 274 #endif /* __FreeBSD__ */ 275 unsigned long bytes = PAGE_SIZE << order; 276 277 #ifdef __linux__ 278 DRM_OS_SPINLOCK(&DRM(mem_lock)); 279 if ((DRM(ram_used) >> PAGE_SHIFT) 280 > (DRM_RAM_PERCENT * DRM(ram_available)) / 100) { 281 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 282 return 0; 283 } 284 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 285 #endif /* __linux__ */ 286 287 #ifdef __linux__ 288 address = __get_free_pages(GFP_KERNEL, order); 289 #endif /* __linux__ */ 290 #ifdef __FreeBSD__ 291 address = (vm_offset_t) contigmalloc(bytes, DRM(M_DRM), M_WAITOK, 0, ~0, 1, 0); 292 #endif /* __FreeBSD__ */ 293 if (!address) { 294 DRM_OS_SPINLOCK(&DRM(mem_lock)); 295 ++DRM(mem_stats)[area].fail_count; 296 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 297 return 0; 298 } 299 DRM_OS_SPINLOCK(&DRM(mem_lock)); 300 ++DRM(mem_stats)[area].succeed_count; 301 DRM(mem_stats)[area].bytes_allocated += bytes; 302 DRM(ram_used) += bytes; 303 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 304 305 306 /* Zero outside the lock */ 307 memset((void *)address, 0, bytes); 308 309 #ifdef __linux__ 310 /* Reserve */ 311 for (addr = address, sz = bytes; 312 sz > 0; 313 addr += PAGE_SIZE, sz -= PAGE_SIZE) { 314 mem_map_reserve(virt_to_page(addr)); 315 } 316 #endif /* __linux__ */ 317 318 return address; 319 } 320 321 void DRM(free_pages)(unsigned long address, int order, int area) 322 { 323 unsigned long bytes = PAGE_SIZE << order; 324 int alloc_count; 325 int free_count; 326 327 if (!address) { 328 DRM_MEM_ERROR(area, "Attempt to free address 0\n"); 329 } else { 330 #ifdef __linux__ 331 unsigned long addr; 332 unsigned int sz; 333 /* Unreserve */ 334 for (addr = address, sz = bytes; 335 sz > 0; 336 addr += PAGE_SIZE, sz -= PAGE_SIZE) { 337 mem_map_unreserve(virt_to_page(addr)); 338 } 339 free_pages(address, order); 340 #endif /* __linux__ */ 341 #ifdef __FreeBSD__ 342 contigfree((void *) address, bytes, DRM(M_DRM)); 343 #endif /* __FreeBSD__ */ 344 } 345 346 DRM_OS_SPINLOCK(&DRM(mem_lock)); 347 free_count = ++DRM(mem_stats)[area].free_count; 348 alloc_count = DRM(mem_stats)[area].succeed_count; 349 DRM(mem_stats)[area].bytes_freed += bytes; 350 DRM(ram_used) -= bytes; 351 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 352 if (free_count > alloc_count) { 353 DRM_MEM_ERROR(area, 354 "Excess frees: %d frees, %d allocs\n", 355 free_count, alloc_count); 356 } 357 } 358 359 void *DRM(ioremap)(unsigned long offset, unsigned long size) 360 { 361 void *pt; 362 363 if (!size) { 364 DRM_MEM_ERROR(DRM_MEM_MAPPINGS, 365 "Mapping 0 bytes at 0x%08lx\n", offset); 366 return NULL; 367 } 368 369 #ifdef __linux__ 370 if (!(pt = ioremap(offset, size))) { 371 #endif /* __linux__ */ 372 #ifdef __FreeBSD__ 373 if (!(pt = pmap_mapdev(offset, size))) { 374 #endif /* __FreeBSD__ */ 375 DRM_OS_SPINLOCK(&DRM(mem_lock)); 376 ++DRM(mem_stats)[DRM_MEM_MAPPINGS].fail_count; 377 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 378 return NULL; 379 } 380 DRM_OS_SPINLOCK(&DRM(mem_lock)); 381 ++DRM(mem_stats)[DRM_MEM_MAPPINGS].succeed_count; 382 DRM(mem_stats)[DRM_MEM_MAPPINGS].bytes_allocated += size; 383 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 384 return pt; 385 } 386 387 void DRM(ioremapfree)(void *pt, unsigned long size) 388 { 389 int alloc_count; 390 int free_count; 391 392 if (!pt) 393 DRM_MEM_ERROR(DRM_MEM_MAPPINGS, 394 "Attempt to free NULL pointer\n"); 395 else 396 #ifdef __linux__ 397 iounmap(pt); 398 #endif /* __linux__ */ 399 #ifdef __FreeBSD__ 400 pmap_unmapdev((vm_offset_t) pt, size); 401 #endif /* __FreeBSD__ */ 402 403 DRM_OS_SPINLOCK(&DRM(mem_lock)); 404 DRM(mem_stats)[DRM_MEM_MAPPINGS].bytes_freed += size; 405 free_count = ++DRM(mem_stats)[DRM_MEM_MAPPINGS].free_count; 406 alloc_count = DRM(mem_stats)[DRM_MEM_MAPPINGS].succeed_count; 407 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 408 if (free_count > alloc_count) { 409 DRM_MEM_ERROR(DRM_MEM_MAPPINGS, 410 "Excess frees: %d frees, %d allocs\n", 411 free_count, alloc_count); 412 } 413 } 414 415 #if __REALLY_HAVE_AGP 416 agp_memory *DRM(alloc_agp)(int pages, u32 type) 417 { 418 agp_memory *handle; 419 420 if (!pages) { 421 DRM_MEM_ERROR(DRM_MEM_TOTALAGP, "Allocating 0 pages\n"); 422 return NULL; 423 } 424 425 if ((handle = DRM(agp_allocate_memory)(pages, type))) { 426 DRM_OS_SPINLOCK(&DRM(mem_lock)); 427 ++DRM(mem_stats)[DRM_MEM_TOTALAGP].succeed_count; 428 DRM(mem_stats)[DRM_MEM_TOTALAGP].bytes_allocated 429 += pages << PAGE_SHIFT; 430 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 431 return handle; 432 } 433 DRM_OS_SPINLOCK(&DRM(mem_lock)); 434 ++DRM(mem_stats)[DRM_MEM_TOTALAGP].fail_count; 435 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 436 return NULL; 437 } 438 439 int DRM(free_agp)(agp_memory *handle, int pages) 440 { 441 int alloc_count; 442 int free_count; 443 444 if (!handle) { 445 DRM_MEM_ERROR(DRM_MEM_TOTALAGP, 446 "Attempt to free NULL AGP handle\n"); 447 return DRM_OS_ERR(EINVAL); 448 } 449 450 if (DRM(agp_free_memory)(handle)) { 451 DRM_OS_SPINLOCK(&DRM(mem_lock)); 452 free_count = ++DRM(mem_stats)[DRM_MEM_TOTALAGP].free_count; 453 alloc_count = DRM(mem_stats)[DRM_MEM_TOTALAGP].succeed_count; 454 DRM(mem_stats)[DRM_MEM_TOTALAGP].bytes_freed 455 += pages << PAGE_SHIFT; 456 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 457 if (free_count > alloc_count) { 458 DRM_MEM_ERROR(DRM_MEM_TOTALAGP, 459 "Excess frees: %d frees, %d allocs\n", 460 free_count, alloc_count); 461 } 462 return 0; 463 } 464 return DRM_OS_ERR(EINVAL); 465 } 466 467 int DRM(bind_agp)(agp_memory *handle, unsigned int start) 468 { 469 int retcode; 470 #ifdef __FreeBSD__ 471 device_t dev = agp_find_device(); 472 struct agp_memory_info info; 473 474 if (!dev) 475 return DRM_OS_ERR(EINVAL); 476 #endif /* __FreeBSD__ */ 477 478 if (!handle) { 479 DRM_MEM_ERROR(DRM_MEM_BOUNDAGP, 480 "Attempt to bind NULL AGP handle\n"); 481 return DRM_OS_ERR(EINVAL); 482 } 483 484 if (!(retcode = DRM(agp_bind_memory)(handle, start))) { 485 DRM_OS_SPINLOCK(&DRM(mem_lock)); 486 ++DRM(mem_stats)[DRM_MEM_BOUNDAGP].succeed_count; 487 #ifdef __linux__ 488 DRM(mem_stats)[DRM_MEM_BOUNDAGP].bytes_allocated 489 += handle->page_count << PAGE_SHIFT; 490 #endif /* __linux__ */ 491 #ifdef __FreeBSD__ 492 agp_memory_info(dev, handle, &info); 493 DRM(mem_stats)[DRM_MEM_BOUNDAGP].bytes_allocated 494 += info.ami_size; 495 #endif /* __FreeBSD__ */ 496 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 497 return 0; 498 } 499 DRM_OS_SPINLOCK(&DRM(mem_lock)); 500 ++DRM(mem_stats)[DRM_MEM_BOUNDAGP].fail_count; 501 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 502 return retcode; 503 } 504 505 int DRM(unbind_agp)(agp_memory *handle) 506 { 507 int alloc_count; 508 int free_count; 509 int retcode = DRM_OS_ERR(EINVAL); 510 #ifdef __FreeBSD__ 511 device_t dev = agp_find_device(); 512 struct agp_memory_info info; 513 514 if (!dev) 515 return DRM_OS_ERR(EINVAL); 516 #endif /* __FreeBSD__ */ 517 518 if (!handle) { 519 DRM_MEM_ERROR(DRM_MEM_BOUNDAGP, 520 "Attempt to unbind NULL AGP handle\n"); 521 return retcode; 522 } 523 524 #ifdef __FreeBSD__ 525 agp_memory_info(dev, handle, &info); 526 #endif /* __FreeBSD__ */ 527 528 if ((retcode = DRM(agp_unbind_memory)(handle))) 529 return retcode; 530 531 DRM_OS_SPINLOCK(&DRM(mem_lock)); 532 free_count = ++DRM(mem_stats)[DRM_MEM_BOUNDAGP].free_count; 533 alloc_count = DRM(mem_stats)[DRM_MEM_BOUNDAGP].succeed_count; 534 #ifdef __linux__ 535 DRM(mem_stats)[DRM_MEM_BOUNDAGP].bytes_freed 536 += handle->page_count << PAGE_SHIFT; 537 #endif /* __linux__ */ 538 #ifdef __FreeBSD__ 539 DRM(mem_stats)[DRM_MEM_BOUNDAGP].bytes_freed 540 += info.ami_size; 541 #endif /* __FreeBSD__ */ 542 DRM_OS_SPINUNLOCK(&DRM(mem_lock)); 543 if (free_count > alloc_count) { 544 DRM_MEM_ERROR(DRM_MEM_BOUNDAGP, 545 "Excess frees: %d frees, %d allocs\n", 546 free_count, alloc_count); 547 } 548 return retcode; 549 } 550 #endif
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