| 1 | /* |
| 2 | * Copyright © 2006 Intel Corporation |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 21 | * SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Eric Anholt <eric@anholt.net> |
| 25 | * Michel Dänzer <michel@tungstengraphics.com> |
| 26 | * |
| 27 | */ |
| 28 | |
| 29 | #ifdef HAVE_DIX_CONFIG_H |
| 30 | #include <dix-config.h> |
| 31 | #endif |
| 32 | |
| 33 | #include <string.h> |
| 34 | |
| 35 | #include "exa_priv.h" |
| 36 | #include "exa.h" |
| 37 | |
| 38 | #if DEBUG_MIGRATE |
| 39 | #define DBG_MIGRATE(a) ErrorF a |
| 40 | #else |
| 41 | #define DBG_MIGRATE(a) |
| 42 | #endif |
| 43 | |
| 44 | /** |
| 45 | * The fallback path for UTS/DFS failing is to just memcpy. exaCopyDirtyToSys |
| 46 | * and exaCopyDirtyToFb both needed to do this loop. |
| 47 | */ |
| 48 | static void |
| 49 | exaMemcpyBox(PixmapPtr pPixmap, BoxPtr pbox, CARD8 *src, int src_pitch, |
| 50 | CARD8 *dst, int dst_pitch) |
| 51 | { |
| 52 | int i, cpp = pPixmap->drawable.bitsPerPixel / 8; |
| 53 | int bytes = (pbox->x2 - pbox->x1) * cpp; |
| 54 | |
| 55 | src += pbox->y1 * src_pitch + pbox->x1 * cpp; |
| 56 | dst += pbox->y1 * dst_pitch + pbox->x1 * cpp; |
| 57 | |
| 58 | for (i = pbox->y2 - pbox->y1; i; i--) { |
| 59 | memcpy(dst, src, bytes); |
| 60 | src += src_pitch; |
| 61 | dst += dst_pitch; |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Returns TRUE if the pixmap is dirty (has been modified in its current |
| 67 | * location compared to the other), or lacks a private for tracking |
| 68 | * dirtiness. |
| 69 | */ |
| 70 | static Bool |
| 71 | exaPixmapIsDirty(PixmapPtr pPix) |
| 72 | { |
| 73 | ExaPixmapPriv(pPix); |
| 74 | |
| 75 | if (pExaPixmap == NULL) |
| 76 | EXA_FatalErrorDebugWithRet(("EXA bug: exaPixmapIsDirty was called on a non-exa pixmap.\n"), TRUE); |
| 77 | |
| 78 | if (!pExaPixmap->pDamage) |
| 79 | return FALSE; |
| 80 | |
| 81 | return RegionNotEmpty(DamageRegion(pExaPixmap->pDamage)) || |
| 82 | !RegionEqual(&pExaPixmap->validSys, &pExaPixmap->validFB); |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * Returns TRUE if the pixmap is either pinned in FB, or has a sufficient score |
| 87 | * to be considered "should be in framebuffer". That's just anything that has |
| 88 | * had more acceleration than fallbacks, or has no score yet. |
| 89 | * |
| 90 | * Only valid if using a migration scheme that tracks score. |
| 91 | */ |
| 92 | static Bool |
| 93 | exaPixmapShouldBeInFB(PixmapPtr pPix) |
| 94 | { |
| 95 | ExaPixmapPriv(pPix); |
| 96 | |
| 97 | if (exaPixmapIsPinned(pPix)) |
| 98 | return TRUE; |
| 99 | |
| 100 | return pExaPixmap->score >= 0; |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * If the pixmap is currently dirty, this copies at least the dirty area from |
| 105 | * FB to system or vice versa. Both areas must be allocated. |
| 106 | */ |
| 107 | static void |
| 108 | exaCopyDirty(ExaMigrationPtr migrate, RegionPtr pValidDst, RegionPtr pValidSrc, |
| 109 | Bool (*transfer) (PixmapPtr pPix, int x, int y, int w, int h, |
| 110 | char *sys, int sys_pitch), int fallback_index, |
| 111 | void (*sync) (ScreenPtr pScreen)) |
| 112 | { |
| 113 | PixmapPtr pPixmap = migrate->pPix; |
| 114 | |
| 115 | ExaPixmapPriv(pPixmap); |
| 116 | RegionPtr damage = DamageRegion(pExaPixmap->pDamage); |
| 117 | RegionRec CopyReg; |
| 118 | Bool save_use_gpu_copy; |
| 119 | int save_pitch; |
| 120 | BoxPtr pBox; |
| 121 | int nbox; |
| 122 | Bool access_prepared = FALSE; |
| 123 | Bool need_sync = FALSE; |
| 124 | |
| 125 | /* Damaged bits are valid in current copy but invalid in other one */ |
| 126 | if (pExaPixmap->use_gpu_copy) { |
| 127 | RegionUnion(&pExaPixmap->validFB, &pExaPixmap->validFB, damage); |
| 128 | RegionSubtract(&pExaPixmap->validSys, &pExaPixmap->validSys, damage); |
| 129 | } |
| 130 | else { |
| 131 | RegionUnion(&pExaPixmap->validSys, &pExaPixmap->validSys, damage); |
| 132 | RegionSubtract(&pExaPixmap->validFB, &pExaPixmap->validFB, damage); |
| 133 | } |
| 134 | |
| 135 | RegionEmpty(damage); |
| 136 | |
| 137 | /* Copy bits valid in source but not in destination */ |
| 138 | RegionNull(&CopyReg); |
| 139 | RegionSubtract(&CopyReg, pValidSrc, pValidDst); |
| 140 | |
| 141 | if (migrate->as_dst) { |
| 142 | ExaScreenPriv(pPixmap->drawable.pScreen); |
| 143 | |
| 144 | /* XXX: The pending damage region will be marked as damaged after the |
| 145 | * operation, so it should serve as an upper bound for the region that |
| 146 | * needs to be synchronized for the operation. Unfortunately, this |
| 147 | * causes corruption in some cases, e.g. when starting compiz. See |
| 148 | * https://bugs.freedesktop.org/show_bug.cgi?id=12916 . |
| 149 | */ |
| 150 | if (pExaScr->optimize_migration) { |
| 151 | RegionPtr pending_damage = DamagePendingRegion(pExaPixmap->pDamage); |
| 152 | |
| 153 | #if DEBUG_MIGRATE |
| 154 | if (RegionNil(pending_damage)) { |
| 155 | static Bool firsttime = TRUE; |
| 156 | |
| 157 | if (firsttime) { |
| 158 | ErrorF("%s: Pending damage region empty!\n", __func__); |
| 159 | firsttime = FALSE; |
| 160 | } |
| 161 | } |
| 162 | #endif |
| 163 | |
| 164 | /* Try to prevent destination valid region from growing too many |
| 165 | * rects by filling it up to the extents of the union of the |
| 166 | * destination valid region and the pending damage region. |
| 167 | */ |
| 168 | if (RegionNumRects(pValidDst) > 10) { |
| 169 | BoxRec box; |
| 170 | BoxPtr pValidExt, pDamageExt; |
| 171 | RegionRec closure; |
| 172 | |
| 173 | pValidExt = RegionExtents(pValidDst); |
| 174 | pDamageExt = RegionExtents(pending_damage); |
| 175 | |
| 176 | box.x1 = min(pValidExt->x1, pDamageExt->x1); |
| 177 | box.y1 = min(pValidExt->y1, pDamageExt->y1); |
| 178 | box.x2 = max(pValidExt->x2, pDamageExt->x2); |
| 179 | box.y2 = max(pValidExt->y2, pDamageExt->y2); |
| 180 | |
| 181 | RegionInit(&closure, &box, 0); |
| 182 | RegionIntersect(&CopyReg, &CopyReg, &closure); |
| 183 | } |
| 184 | else |
| 185 | RegionIntersect(&CopyReg, &CopyReg, pending_damage); |
| 186 | } |
| 187 | |
| 188 | /* The caller may provide a region to be subtracted from the calculated |
| 189 | * dirty region. This is to avoid migration of bits that don't |
| 190 | * contribute to the result of the operation. |
| 191 | */ |
| 192 | if (migrate->pReg) |
| 193 | RegionSubtract(&CopyReg, &CopyReg, migrate->pReg); |
| 194 | } |
| 195 | else { |
| 196 | /* The caller may restrict the region to be migrated for source pixmaps |
| 197 | * to what's relevant for the operation. |
| 198 | */ |
| 199 | if (migrate->pReg) |
| 200 | RegionIntersect(&CopyReg, &CopyReg, migrate->pReg); |
| 201 | } |
| 202 | |
| 203 | pBox = RegionRects(&CopyReg); |
| 204 | nbox = RegionNumRects(&CopyReg); |
| 205 | |
| 206 | save_use_gpu_copy = pExaPixmap->use_gpu_copy; |
| 207 | save_pitch = pPixmap->devKind; |
| 208 | pExaPixmap->use_gpu_copy = TRUE; |
| 209 | pPixmap->devKind = pExaPixmap->fb_pitch; |
| 210 | |
| 211 | while (nbox--) { |
| 212 | pBox->x1 = max(pBox->x1, 0); |
| 213 | pBox->y1 = max(pBox->y1, 0); |
| 214 | pBox->x2 = min(pBox->x2, pPixmap->drawable.width); |
| 215 | pBox->y2 = min(pBox->y2, pPixmap->drawable.height); |
| 216 | |
| 217 | if (pBox->x1 >= pBox->x2 || pBox->y1 >= pBox->y2) |
| 218 | continue; |
| 219 | |
| 220 | if (!transfer || !transfer(pPixmap, |
| 221 | pBox->x1, pBox->y1, |
| 222 | pBox->x2 - pBox->x1, |
| 223 | pBox->y2 - pBox->y1, |
| 224 | (char *) (pExaPixmap->sys_ptr |
| 225 | + pBox->y1 * pExaPixmap->sys_pitch |
| 226 | + |
| 227 | pBox->x1 * |
| 228 | pPixmap->drawable.bitsPerPixel / |
| 229 | 8), pExaPixmap->sys_pitch)) { |
| 230 | if (!access_prepared) { |
| 231 | ExaDoPrepareAccess(pPixmap, fallback_index); |
| 232 | access_prepared = TRUE; |
| 233 | } |
| 234 | if (fallback_index == EXA_PREPARE_DEST) { |
| 235 | exaMemcpyBox(pPixmap, pBox, |
| 236 | pExaPixmap->sys_ptr, pExaPixmap->sys_pitch, |
| 237 | pPixmap->devPrivate.ptr, pPixmap->devKind); |
| 238 | } |
| 239 | else { |
| 240 | exaMemcpyBox(pPixmap, pBox, |
| 241 | pPixmap->devPrivate.ptr, pPixmap->devKind, |
| 242 | pExaPixmap->sys_ptr, pExaPixmap->sys_pitch); |
| 243 | } |
| 244 | } |
| 245 | else |
| 246 | need_sync = TRUE; |
| 247 | |
| 248 | pBox++; |
| 249 | } |
| 250 | |
| 251 | pExaPixmap->use_gpu_copy = save_use_gpu_copy; |
| 252 | pPixmap->devKind = save_pitch; |
| 253 | |
| 254 | /* Try to prevent source valid region from growing too many rects by |
| 255 | * removing parts of it which are also in the destination valid region. |
| 256 | * Removing anything beyond that would lead to data loss. |
| 257 | */ |
| 258 | if (RegionNumRects(pValidSrc) > 20) |
| 259 | RegionSubtract(pValidSrc, pValidSrc, pValidDst); |
| 260 | |
| 261 | /* The copied bits are now valid in destination */ |
| 262 | RegionUnion(pValidDst, pValidDst, &CopyReg); |
| 263 | |
| 264 | RegionUninit(&CopyReg); |
| 265 | |
| 266 | if (access_prepared) |
| 267 | exaFinishAccess(&pPixmap->drawable, fallback_index); |
| 268 | else if (need_sync && sync) |
| 269 | sync(pPixmap->drawable.pScreen); |
| 270 | } |
| 271 | |
| 272 | /** |
| 273 | * If the pixmap is currently dirty, this copies at least the dirty area from |
| 274 | * the framebuffer memory copy to the system memory copy. Both areas must be |
| 275 | * allocated. |
| 276 | */ |
| 277 | void |
| 278 | exaCopyDirtyToSys(ExaMigrationPtr migrate) |
| 279 | { |
| 280 | PixmapPtr pPixmap = migrate->pPix; |
| 281 | |
| 282 | ExaScreenPriv(pPixmap->drawable.pScreen); |
| 283 | ExaPixmapPriv(pPixmap); |
| 284 | |
| 285 | exaCopyDirty(migrate, &pExaPixmap->validSys, &pExaPixmap->validFB, |
| 286 | pExaScr->info->DownloadFromScreen, EXA_PREPARE_SRC, |
| 287 | exaWaitSync); |
| 288 | } |
| 289 | |
| 290 | /** |
| 291 | * If the pixmap is currently dirty, this copies at least the dirty area from |
| 292 | * the system memory copy to the framebuffer memory copy. Both areas must be |
| 293 | * allocated. |
| 294 | */ |
| 295 | void |
| 296 | exaCopyDirtyToFb(ExaMigrationPtr migrate) |
| 297 | { |
| 298 | PixmapPtr pPixmap = migrate->pPix; |
| 299 | |
| 300 | ExaScreenPriv(pPixmap->drawable.pScreen); |
| 301 | ExaPixmapPriv(pPixmap); |
| 302 | |
| 303 | exaCopyDirty(migrate, &pExaPixmap->validFB, &pExaPixmap->validSys, |
| 304 | pExaScr->info->UploadToScreen, EXA_PREPARE_DEST, NULL); |
| 305 | } |
| 306 | |
| 307 | /** |
| 308 | * Allocates a framebuffer copy of the pixmap if necessary, and then copies |
| 309 | * any necessary pixmap data into the framebuffer copy and points the pixmap at |
| 310 | * it. |
| 311 | * |
| 312 | * Note that when first allocated, a pixmap will have FALSE dirty flag. |
| 313 | * This is intentional because pixmap data starts out undefined. So if we move |
| 314 | * it in due to the first operation against it being accelerated, it will have |
| 315 | * undefined framebuffer contents that we didn't have to upload. If we do |
| 316 | * moveouts (and moveins) after the first movein, then we will only have to copy |
| 317 | * back and forth if the pixmap was written to after the last synchronization of |
| 318 | * the two copies. Then, at exaPixmapSave (when the framebuffer copy goes away) |
| 319 | * we mark the pixmap dirty, so that the next exaMoveInPixmap will actually move |
| 320 | * all the data, since it's almost surely all valid now. |
| 321 | */ |
| 322 | static void |
| 323 | exaDoMoveInPixmap(ExaMigrationPtr migrate) |
| 324 | { |
| 325 | PixmapPtr pPixmap = migrate->pPix; |
| 326 | ScreenPtr pScreen = pPixmap->drawable.pScreen; |
| 327 | |
| 328 | ExaScreenPriv(pScreen); |
| 329 | ExaPixmapPriv(pPixmap); |
| 330 | |
| 331 | /* If we're VT-switched away, no touching card memory allowed. */ |
| 332 | if (pExaScr->swappedOut) |
| 333 | return; |
| 334 | |
| 335 | /* If we're not allowed to move, then fail. */ |
| 336 | if (exaPixmapIsPinned(pPixmap)) |
| 337 | return; |
| 338 | |
| 339 | /* Don't migrate in pixmaps which are less than 8bpp. This avoids a lot of |
| 340 | * fragility in EXA, and <8bpp is probably not used enough any more to care |
| 341 | * (at least, not in acceleratd paths). |
| 342 | */ |
| 343 | if (pPixmap->drawable.bitsPerPixel < 8) |
| 344 | return; |
| 345 | |
| 346 | if (pExaPixmap->accel_blocked) |
| 347 | return; |
| 348 | |
| 349 | if (pExaPixmap->area == NULL) { |
| 350 | pExaPixmap->area = |
| 351 | exaOffscreenAlloc(pScreen, pExaPixmap->fb_size, |
| 352 | pExaScr->info->pixmapOffsetAlign, FALSE, |
| 353 | exaPixmapSave, (pointer) pPixmap); |
| 354 | if (pExaPixmap->area == NULL) |
| 355 | return; |
| 356 | |
| 357 | pExaPixmap->fb_ptr = (CARD8 *) pExaScr->info->memoryBase + |
| 358 | pExaPixmap->area->offset; |
| 359 | } |
| 360 | |
| 361 | exaCopyDirtyToFb(migrate); |
| 362 | |
| 363 | if (exaPixmapHasGpuCopy(pPixmap)) |
| 364 | return; |
| 365 | |
| 366 | DBG_MIGRATE(("-> %p (0x%x) (%dx%d) (%c)\n", pPixmap, |
| 367 | (ExaGetPixmapPriv(pPixmap)->area ? |
| 368 | ExaGetPixmapPriv(pPixmap)->area->offset : 0), |
| 369 | pPixmap->drawable.width, |
| 370 | pPixmap->drawable.height, |
| 371 | exaPixmapIsDirty(pPixmap) ? 'd' : 'c')); |
| 372 | |
| 373 | pExaPixmap->use_gpu_copy = TRUE; |
| 374 | |
| 375 | pPixmap->devKind = pExaPixmap->fb_pitch; |
| 376 | pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER; |
| 377 | } |
| 378 | |
| 379 | void |
| 380 | exaMoveInPixmap_classic(PixmapPtr pPixmap) |
| 381 | { |
| 382 | static ExaMigrationRec migrate = {.as_dst = FALSE,.as_src = TRUE, |
| 383 | .pReg = NULL |
| 384 | }; |
| 385 | |
| 386 | migrate.pPix = pPixmap; |
| 387 | exaDoMoveInPixmap(&migrate); |
| 388 | } |
| 389 | |
| 390 | /** |
| 391 | * Switches the current active location of the pixmap to system memory, copying |
| 392 | * updated data out if necessary. |
| 393 | */ |
| 394 | static void |
| 395 | exaDoMoveOutPixmap(ExaMigrationPtr migrate) |
| 396 | { |
| 397 | PixmapPtr pPixmap = migrate->pPix; |
| 398 | |
| 399 | ExaPixmapPriv(pPixmap); |
| 400 | |
| 401 | if (!pExaPixmap->area || exaPixmapIsPinned(pPixmap)) |
| 402 | return; |
| 403 | |
| 404 | exaCopyDirtyToSys(migrate); |
| 405 | |
| 406 | if (exaPixmapHasGpuCopy(pPixmap)) { |
| 407 | |
| 408 | DBG_MIGRATE(("<- %p (%p) (%dx%d) (%c)\n", pPixmap, |
| 409 | (void *) (ExaGetPixmapPriv(pPixmap)->area ? |
| 410 | ExaGetPixmapPriv(pPixmap)->area->offset : 0), |
| 411 | pPixmap->drawable.width, |
| 412 | pPixmap->drawable.height, |
| 413 | exaPixmapIsDirty(pPixmap) ? 'd' : 'c')); |
| 414 | |
| 415 | pExaPixmap->use_gpu_copy = FALSE; |
| 416 | |
| 417 | pPixmap->devKind = pExaPixmap->sys_pitch; |
| 418 | pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER; |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | void |
| 423 | exaMoveOutPixmap_classic(PixmapPtr pPixmap) |
| 424 | { |
| 425 | static ExaMigrationRec migrate = {.as_dst = FALSE,.as_src = TRUE, |
| 426 | .pReg = NULL |
| 427 | }; |
| 428 | |
| 429 | migrate.pPix = pPixmap; |
| 430 | exaDoMoveOutPixmap(&migrate); |
| 431 | } |
| 432 | |
| 433 | /** |
| 434 | * Copies out important pixmap data and removes references to framebuffer area. |
| 435 | * Called when the memory manager decides it's time to kick the pixmap out of |
| 436 | * framebuffer entirely. |
| 437 | */ |
| 438 | void |
| 439 | exaPixmapSave(ScreenPtr pScreen, ExaOffscreenArea * area) |
| 440 | { |
| 441 | PixmapPtr pPixmap = area->privData; |
| 442 | |
| 443 | ExaPixmapPriv(pPixmap); |
| 444 | |
| 445 | exaMoveOutPixmap(pPixmap); |
| 446 | |
| 447 | pExaPixmap->fb_ptr = NULL; |
| 448 | pExaPixmap->area = NULL; |
| 449 | |
| 450 | /* Mark all FB bits as invalid, so all valid system bits get copied to FB |
| 451 | * next time */ |
| 452 | RegionEmpty(&pExaPixmap->validFB); |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * For the "greedy" migration scheme, pushes the pixmap toward being located in |
| 457 | * framebuffer memory. |
| 458 | */ |
| 459 | static void |
| 460 | exaMigrateTowardFb(ExaMigrationPtr migrate) |
| 461 | { |
| 462 | PixmapPtr pPixmap = migrate->pPix; |
| 463 | |
| 464 | ExaPixmapPriv(pPixmap); |
| 465 | |
| 466 | if (pExaPixmap->score == EXA_PIXMAP_SCORE_PINNED) { |
| 467 | DBG_MIGRATE(("UseScreen: not migrating pinned pixmap %p\n", |
| 468 | (pointer) pPixmap)); |
| 469 | return; |
| 470 | } |
| 471 | |
| 472 | DBG_MIGRATE(("UseScreen %p score %d\n", |
| 473 | (pointer) pPixmap, pExaPixmap->score)); |
| 474 | |
| 475 | if (pExaPixmap->score == EXA_PIXMAP_SCORE_INIT) { |
| 476 | exaDoMoveInPixmap(migrate); |
| 477 | pExaPixmap->score = 0; |
| 478 | } |
| 479 | |
| 480 | if (pExaPixmap->score < EXA_PIXMAP_SCORE_MAX) |
| 481 | pExaPixmap->score++; |
| 482 | |
| 483 | if (pExaPixmap->score >= EXA_PIXMAP_SCORE_MOVE_IN && |
| 484 | !exaPixmapHasGpuCopy(pPixmap)) { |
| 485 | exaDoMoveInPixmap(migrate); |
| 486 | } |
| 487 | |
| 488 | if (exaPixmapHasGpuCopy(pPixmap)) { |
| 489 | exaCopyDirtyToFb(migrate); |
| 490 | ExaOffscreenMarkUsed(pPixmap); |
| 491 | } |
| 492 | else |
| 493 | exaCopyDirtyToSys(migrate); |
| 494 | } |
| 495 | |
| 496 | /** |
| 497 | * For the "greedy" migration scheme, pushes the pixmap toward being located in |
| 498 | * system memory. |
| 499 | */ |
| 500 | static void |
| 501 | exaMigrateTowardSys(ExaMigrationPtr migrate) |
| 502 | { |
| 503 | PixmapPtr pPixmap = migrate->pPix; |
| 504 | |
| 505 | ExaPixmapPriv(pPixmap); |
| 506 | |
| 507 | DBG_MIGRATE(("UseMem: %p score %d\n", (pointer) pPixmap, |
| 508 | pExaPixmap->score)); |
| 509 | |
| 510 | if (pExaPixmap->score == EXA_PIXMAP_SCORE_PINNED) |
| 511 | return; |
| 512 | |
| 513 | if (pExaPixmap->score == EXA_PIXMAP_SCORE_INIT) |
| 514 | pExaPixmap->score = 0; |
| 515 | |
| 516 | if (pExaPixmap->score > EXA_PIXMAP_SCORE_MIN) |
| 517 | pExaPixmap->score--; |
| 518 | |
| 519 | if (pExaPixmap->score <= EXA_PIXMAP_SCORE_MOVE_OUT && pExaPixmap->area) |
| 520 | exaDoMoveOutPixmap(migrate); |
| 521 | |
| 522 | if (exaPixmapHasGpuCopy(pPixmap)) { |
| 523 | exaCopyDirtyToFb(migrate); |
| 524 | ExaOffscreenMarkUsed(pPixmap); |
| 525 | } |
| 526 | else |
| 527 | exaCopyDirtyToSys(migrate); |
| 528 | } |
| 529 | |
| 530 | /** |
| 531 | * If the pixmap has both a framebuffer and system memory copy, this function |
| 532 | * asserts that both of them are the same. |
| 533 | */ |
| 534 | static Bool |
| 535 | exaAssertNotDirty(PixmapPtr pPixmap) |
| 536 | { |
| 537 | ExaPixmapPriv(pPixmap); |
| 538 | CARD8 *dst, *src; |
| 539 | RegionRec ValidReg; |
| 540 | int dst_pitch, src_pitch, cpp, y, nbox, save_pitch; |
| 541 | BoxPtr pBox; |
| 542 | Bool ret = TRUE, save_use_gpu_copy; |
| 543 | |
| 544 | if (exaPixmapIsPinned(pPixmap) || pExaPixmap->area == NULL) |
| 545 | return ret; |
| 546 | |
| 547 | RegionNull(&ValidReg); |
| 548 | RegionIntersect(&ValidReg, &pExaPixmap->validFB, &pExaPixmap->validSys); |
| 549 | nbox = RegionNumRects(&ValidReg); |
| 550 | |
| 551 | if (!nbox) |
| 552 | goto out; |
| 553 | |
| 554 | pBox = RegionRects(&ValidReg); |
| 555 | |
| 556 | dst_pitch = pExaPixmap->sys_pitch; |
| 557 | src_pitch = pExaPixmap->fb_pitch; |
| 558 | cpp = pPixmap->drawable.bitsPerPixel / 8; |
| 559 | |
| 560 | save_use_gpu_copy = pExaPixmap->use_gpu_copy; |
| 561 | save_pitch = pPixmap->devKind; |
| 562 | pExaPixmap->use_gpu_copy = TRUE; |
| 563 | pPixmap->devKind = pExaPixmap->fb_pitch; |
| 564 | |
| 565 | if (!ExaDoPrepareAccess(pPixmap, EXA_PREPARE_SRC)) |
| 566 | goto skip; |
| 567 | |
| 568 | while (nbox--) { |
| 569 | int rowbytes; |
| 570 | |
| 571 | pBox->x1 = max(pBox->x1, 0); |
| 572 | pBox->y1 = max(pBox->y1, 0); |
| 573 | pBox->x2 = min(pBox->x2, pPixmap->drawable.width); |
| 574 | pBox->y2 = min(pBox->y2, pPixmap->drawable.height); |
| 575 | |
| 576 | if (pBox->x1 >= pBox->x2 || pBox->y1 >= pBox->y2) |
| 577 | continue; |
| 578 | |
| 579 | rowbytes = (pBox->x2 - pBox->x1) * cpp; |
| 580 | src = |
| 581 | (CARD8 *) pPixmap->devPrivate.ptr + pBox->y1 * src_pitch + |
| 582 | pBox->x1 * cpp; |
| 583 | dst = pExaPixmap->sys_ptr + pBox->y1 * dst_pitch + pBox->x1 * cpp; |
| 584 | |
| 585 | for (y = pBox->y1; y < pBox->y2; |
| 586 | y++, src += src_pitch, dst += dst_pitch) { |
| 587 | if (memcmp(dst, src, rowbytes) != 0) { |
| 588 | ret = FALSE; |
| 589 | exaPixmapDirty(pPixmap, pBox->x1, pBox->y1, pBox->x2, pBox->y2); |
| 590 | break; |
| 591 | } |
| 592 | } |
| 593 | } |
| 594 | |
| 595 | skip: |
| 596 | exaFinishAccess(&pPixmap->drawable, EXA_PREPARE_SRC); |
| 597 | |
| 598 | pExaPixmap->use_gpu_copy = save_use_gpu_copy; |
| 599 | pPixmap->devKind = save_pitch; |
| 600 | |
| 601 | out: |
| 602 | RegionUninit(&ValidReg); |
| 603 | return ret; |
| 604 | } |
| 605 | |
| 606 | /** |
| 607 | * Performs migration of the pixmaps according to the operation information |
| 608 | * provided in pixmaps and can_accel and the migration scheme chosen in the |
| 609 | * config file. |
| 610 | */ |
| 611 | void |
| 612 | exaDoMigration_classic(ExaMigrationPtr pixmaps, int npixmaps, Bool can_accel) |
| 613 | { |
| 614 | ScreenPtr pScreen = pixmaps[0].pPix->drawable.pScreen; |
| 615 | |
| 616 | ExaScreenPriv(pScreen); |
| 617 | int i, j; |
| 618 | |
| 619 | /* If this debugging flag is set, check each pixmap for whether it is marked |
| 620 | * as clean, and if so, actually check if that's the case. This should help |
| 621 | * catch issues with failing to mark a drawable as dirty. While it will |
| 622 | * catch them late (after the operation happened), it at least explains what |
| 623 | * went wrong, and instrumenting the code to find what operation happened |
| 624 | * to the pixmap last shouldn't be hard. |
| 625 | */ |
| 626 | if (pExaScr->checkDirtyCorrectness) { |
| 627 | for (i = 0; i < npixmaps; i++) { |
| 628 | if (!exaPixmapIsDirty(pixmaps[i].pPix) && |
| 629 | !exaAssertNotDirty(pixmaps[i].pPix)) |
| 630 | ErrorF("%s: Pixmap %d dirty but not marked as such!\n", |
| 631 | __func__, i); |
| 632 | } |
| 633 | } |
| 634 | /* If anything is pinned in system memory, we won't be able to |
| 635 | * accelerate. |
| 636 | */ |
| 637 | for (i = 0; i < npixmaps; i++) { |
| 638 | if (exaPixmapIsPinned(pixmaps[i].pPix) && |
| 639 | !exaPixmapHasGpuCopy(pixmaps[i].pPix)) { |
| 640 | EXA_FALLBACK(("Pixmap %p (%dx%d) pinned in sys\n", pixmaps[i].pPix, |
| 641 | pixmaps[i].pPix->drawable.width, |
| 642 | pixmaps[i].pPix->drawable.height)); |
| 643 | can_accel = FALSE; |
| 644 | break; |
| 645 | } |
| 646 | } |
| 647 | |
| 648 | if (pExaScr->migration == ExaMigrationSmart) { |
| 649 | /* If we've got something as a destination that we shouldn't cause to |
| 650 | * become newly dirtied, take the unaccelerated route. |
| 651 | */ |
| 652 | for (i = 0; i < npixmaps; i++) { |
| 653 | if (pixmaps[i].as_dst && !exaPixmapShouldBeInFB(pixmaps[i].pPix) && |
| 654 | !exaPixmapIsDirty(pixmaps[i].pPix)) { |
| 655 | for (i = 0; i < npixmaps; i++) { |
| 656 | if (!exaPixmapIsDirty(pixmaps[i].pPix)) |
| 657 | exaDoMoveOutPixmap(pixmaps + i); |
| 658 | } |
| 659 | return; |
| 660 | } |
| 661 | } |
| 662 | |
| 663 | /* If we aren't going to accelerate, then we migrate everybody toward |
| 664 | * system memory, and kick out if it's free. |
| 665 | */ |
| 666 | if (!can_accel) { |
| 667 | for (i = 0; i < npixmaps; i++) { |
| 668 | exaMigrateTowardSys(pixmaps + i); |
| 669 | if (!exaPixmapIsDirty(pixmaps[i].pPix)) |
| 670 | exaDoMoveOutPixmap(pixmaps + i); |
| 671 | } |
| 672 | return; |
| 673 | } |
| 674 | |
| 675 | /* Finally, the acceleration path. Move them all in. */ |
| 676 | for (i = 0; i < npixmaps; i++) { |
| 677 | exaMigrateTowardFb(pixmaps + i); |
| 678 | exaDoMoveInPixmap(pixmaps + i); |
| 679 | } |
| 680 | } |
| 681 | else if (pExaScr->migration == ExaMigrationGreedy) { |
| 682 | /* If we can't accelerate, either because the driver can't or because one of |
| 683 | * the pixmaps is pinned in system memory, then we migrate everybody toward |
| 684 | * system memory. |
| 685 | * |
| 686 | * We also migrate toward system if all pixmaps involved are currently in |
| 687 | * system memory -- this can mitigate thrashing when there are significantly |
| 688 | * more pixmaps active than would fit in memory. |
| 689 | * |
| 690 | * If not, then we migrate toward FB so that hopefully acceleration can |
| 691 | * happen. |
| 692 | */ |
| 693 | if (!can_accel) { |
| 694 | for (i = 0; i < npixmaps; i++) |
| 695 | exaMigrateTowardSys(pixmaps + i); |
| 696 | return; |
| 697 | } |
| 698 | |
| 699 | for (i = 0; i < npixmaps; i++) { |
| 700 | if (exaPixmapHasGpuCopy(pixmaps[i].pPix)) { |
| 701 | /* Found one in FB, so move all to FB. */ |
| 702 | for (j = 0; j < npixmaps; j++) |
| 703 | exaMigrateTowardFb(pixmaps + i); |
| 704 | return; |
| 705 | } |
| 706 | } |
| 707 | |
| 708 | /* Nobody's in FB, so move all away from FB. */ |
| 709 | for (i = 0; i < npixmaps; i++) |
| 710 | exaMigrateTowardSys(pixmaps + i); |
| 711 | } |
| 712 | else if (pExaScr->migration == ExaMigrationAlways) { |
| 713 | /* Always move the pixmaps out if we can't accelerate. If we can |
| 714 | * accelerate, try to move them all in. If that fails, then move them |
| 715 | * back out. |
| 716 | */ |
| 717 | if (!can_accel) { |
| 718 | for (i = 0; i < npixmaps; i++) |
| 719 | exaDoMoveOutPixmap(pixmaps + i); |
| 720 | return; |
| 721 | } |
| 722 | |
| 723 | /* Now, try to move them all into FB */ |
| 724 | for (i = 0; i < npixmaps; i++) { |
| 725 | exaDoMoveInPixmap(pixmaps + i); |
| 726 | } |
| 727 | |
| 728 | /* If we couldn't fit everything in, abort */ |
| 729 | for (i = 0; i < npixmaps; i++) { |
| 730 | if (!exaPixmapHasGpuCopy(pixmaps[i].pPix)) { |
| 731 | return; |
| 732 | } |
| 733 | } |
| 734 | |
| 735 | /* Yay, everything has a gpu copy, mark memory as used */ |
| 736 | for (i = 0; i < npixmaps; i++) { |
| 737 | ExaOffscreenMarkUsed(pixmaps[i].pPix); |
| 738 | } |
| 739 | } |
| 740 | } |
| 741 | |
| 742 | void |
| 743 | exaPrepareAccessReg_classic(PixmapPtr pPixmap, int index, RegionPtr pReg) |
| 744 | { |
| 745 | ExaMigrationRec pixmaps[1]; |
| 746 | |
| 747 | if (index == EXA_PREPARE_DEST || index == EXA_PREPARE_AUX_DEST) { |
| 748 | pixmaps[0].as_dst = TRUE; |
| 749 | pixmaps[0].as_src = FALSE; |
| 750 | } |
| 751 | else { |
| 752 | pixmaps[0].as_dst = FALSE; |
| 753 | pixmaps[0].as_src = TRUE; |
| 754 | } |
| 755 | pixmaps[0].pPix = pPixmap; |
| 756 | pixmaps[0].pReg = pReg; |
| 757 | |
| 758 | exaDoMigration(pixmaps, 1, FALSE); |
| 759 | |
| 760 | (void) ExaDoPrepareAccess(pPixmap, index); |
| 761 | } |