1 /*- 2 * Copyright (c) 2000 Doug Rabson 3 * Copyright (c) 2000 Ruslan Ermilov 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 /* 29 * Fixes for 830/845G support: David Dawes <dawes@xfree86.org> 30 * 852GM/855GM/865G support added by David Dawes <dawes@xfree86.org> 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include "opt_bus.h" 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/malloc.h> 41 #include <sys/kernel.h> 42 #include <sys/bus.h> 43 #include <sys/lock.h> 44 #include <sys/lockmgr.h> 45 #include <sys/mutex.h> 46 #include <sys/proc.h> 47 48 #include <dev/pci/pcivar.h> 49 #include <dev/pci/pcireg.h> 50 #include <pci/agppriv.h> 51 #include <pci/agpreg.h> 52 53 #include <vm/vm.h> 54 #include <vm/vm_object.h> 55 #include <vm/vm_page.h> 56 #include <vm/vm_pageout.h> 57 #include <vm/pmap.h> 58 59 #include <machine/bus.h> 60 #include <machine/resource.h> 61 #include <sys/rman.h> 62 63 MALLOC_DECLARE(M_AGP); 64 65 #define READ1(off) bus_space_read_1(sc->bst, sc->bsh, off) 66 #define READ4(off) bus_space_read_4(sc->bst, sc->bsh, off) 67 #define WRITE4(off,v) bus_space_write_4(sc->bst, sc->bsh, off, v) 68 69 #define CHIP_I810 0 /* i810/i815 */ 70 #define CHIP_I830 1 /* 830M/845G */ 71 #define CHIP_I855 2 /* 852GM/855GM/865G */ 72 73 struct agp_i810_softc { 74 struct agp_softc agp; 75 u_int32_t initial_aperture; /* aperture size at startup */ 76 struct agp_gatt *gatt; 77 int chiptype; /* i810-like or i830 */ 78 u_int32_t dcache_size; /* i810 only */ 79 u_int32_t stolen; /* number of i830/845 gtt entries for stolen memory */ 80 device_t bdev; /* bridge device */ 81 struct resource *regs; /* memory mapped GC registers */ 82 bus_space_tag_t bst; /* bus_space tag */ 83 bus_space_handle_t bsh; /* bus_space handle */ 84 }; 85 86 static const char* 87 agp_i810_match(device_t dev) 88 { 89 if (pci_get_class(dev) != PCIC_DISPLAY 90 || pci_get_subclass(dev) != PCIS_DISPLAY_VGA) 91 return NULL; 92 93 switch (pci_get_devid(dev)) { 94 case 0x71218086: 95 return ("Intel 82810 (i810 GMCH) SVGA controller"); 96 97 case 0x71238086: 98 return ("Intel 82810-DC100 (i810-DC100 GMCH) SVGA controller"); 99 100 case 0x71258086: 101 return ("Intel 82810E (i810E GMCH) SVGA controller"); 102 103 case 0x11328086: 104 return ("Intel 82815 (i815 GMCH) SVGA controller"); 105 106 case 0x35778086: 107 return ("Intel 82830M (830M GMCH) SVGA controller"); 108 109 case 0x25628086: 110 return ("Intel 82845G (845G GMCH) SVGA controller"); 111 112 case 0x35828086: 113 switch (pci_read_config(dev, AGP_I85X_CAPID, 1)) { 114 case AGP_I855_GME: 115 return ("Intel 82855GME (855GME GMCH) SVGA controller"); 116 117 case AGP_I855_GM: 118 return ("Intel 82855GM (855GM GMCH) SVGA controller"); 119 120 case AGP_I852_GME: 121 return ("Intel 82852GME (852GME GMCH) SVGA controller"); 122 123 case AGP_I852_GM: 124 return ("Intel 82852GM (852GM GMCH) SVGA controller"); 125 126 default: 127 return ("Intel 8285xM (85xGM GMCH) SVGA controller"); 128 } 129 130 case 0x25728086: 131 return ("Intel 82865G (865G GMCH) SVGA controller"); 132 }; 133 134 return NULL; 135 } 136 137 /* 138 * Find bridge device. 139 */ 140 static device_t 141 agp_i810_find_bridge(device_t dev) 142 { 143 device_t *children, child; 144 int nchildren, i; 145 u_int32_t devid; 146 147 /* 148 * Calculate bridge device's ID. 149 */ 150 devid = pci_get_devid(dev); 151 switch (devid) { 152 case 0x71218086: 153 case 0x71238086: 154 case 0x71258086: 155 devid -= 0x10000; 156 break; 157 158 case 0x11328086: 159 case 0x35778086: 160 case 0x25628086: 161 case 0x35828086: 162 case 0x25728086: 163 devid -= 0x20000; 164 break; 165 }; 166 if (device_get_children(device_get_parent(dev), &children, &nchildren)) 167 return 0; 168 169 for (i = 0; i < nchildren; i++) { 170 child = children[i]; 171 172 if (pci_get_devid(child) == devid) { 173 free(children, M_TEMP); 174 return child; 175 } 176 } 177 free(children, M_TEMP); 178 return 0; 179 } 180 181 static int 182 agp_i810_probe(device_t dev) 183 { 184 const char *desc; 185 186 desc = agp_i810_match(dev); 187 if (desc) { 188 device_t bdev; 189 u_int8_t smram; 190 unsigned int gcc1; 191 int devid = pci_get_devid(dev); 192 193 bdev = agp_i810_find_bridge(dev); 194 if (!bdev) { 195 if (bootverbose) 196 printf("I810: can't find bridge device\n"); 197 return ENXIO; 198 } 199 200 /* 201 * checking whether internal graphics device has been activated. 202 */ 203 switch (devid) { 204 /* i810 */ 205 case 0x71218086: 206 case 0x71238086: 207 case 0x71258086: 208 case 0x11328086: 209 smram = pci_read_config(bdev, AGP_I810_SMRAM, 1); 210 if ((smram & AGP_I810_SMRAM_GMS) 211 == AGP_I810_SMRAM_GMS_DISABLED) { 212 if (bootverbose) 213 printf("I810: disabled, not probing\n"); 214 return ENXIO; 215 } 216 break; 217 218 /* i830 */ 219 case 0x35778086: 220 case 0x35828086: 221 case 0x25628086: 222 case 0x25728086: 223 gcc1 = pci_read_config(bdev, AGP_I830_GCC1, 1); 224 if ((gcc1 & AGP_I830_GCC1_DEV2) == AGP_I830_GCC1_DEV2_DISABLED) { 225 if (bootverbose) 226 printf("I830: disabled, not probing\n"); 227 return ENXIO; 228 } 229 break; 230 231 default: 232 return ENXIO; 233 } 234 235 device_verbose(dev); 236 device_set_desc(dev, desc); 237 return 0; 238 } 239 240 return ENXIO; 241 } 242 243 static int 244 agp_i810_attach(device_t dev) 245 { 246 struct agp_i810_softc *sc = device_get_softc(dev); 247 struct agp_gatt *gatt; 248 int error, rid; 249 250 sc->bdev = agp_i810_find_bridge(dev); 251 if (!sc->bdev) 252 return ENOENT; 253 254 error = agp_generic_attach(dev); 255 if (error) 256 return error; 257 258 switch (pci_get_devid(dev)) { 259 case 0x71218086: 260 case 0x71238086: 261 case 0x71258086: 262 case 0x11328086: 263 sc->chiptype = CHIP_I810; 264 break; 265 case 0x35778086: 266 case 0x25628086: 267 sc->chiptype = CHIP_I830; 268 break; 269 case 0x35828086: 270 case 0x25728086: 271 sc->chiptype = CHIP_I855; 272 break; 273 }; 274 275 /* Same for i810 and i830 */ 276 rid = AGP_I810_MMADR; 277 sc->regs = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 278 0, ~0, 1, RF_ACTIVE); 279 if (!sc->regs) { 280 agp_generic_detach(dev); 281 return ENOMEM; 282 } 283 sc->bst = rman_get_bustag(sc->regs); 284 sc->bsh = rman_get_bushandle(sc->regs); 285 286 sc->initial_aperture = AGP_GET_APERTURE(dev); 287 288 gatt = malloc( sizeof(struct agp_gatt), M_AGP, M_NOWAIT); 289 if (!gatt) { 290 agp_generic_detach(dev); 291 return ENOMEM; 292 } 293 sc->gatt = gatt; 294 295 gatt->ag_entries = AGP_GET_APERTURE(dev) >> AGP_PAGE_SHIFT; 296 297 if ( sc->chiptype == CHIP_I810 ) { 298 /* Some i810s have on-chip memory called dcache */ 299 if (READ1(AGP_I810_DRT) & AGP_I810_DRT_POPULATED) 300 sc->dcache_size = 4 * 1024 * 1024; 301 else 302 sc->dcache_size = 0; 303 304 /* According to the specs the gatt on the i810 must be 64k */ 305 gatt->ag_virtual = contigmalloc( 64 * 1024, M_AGP, 0, 306 0, ~0, PAGE_SIZE, 0); 307 if (!gatt->ag_virtual) { 308 if (bootverbose) 309 device_printf(dev, "contiguous allocation failed\n"); 310 free(gatt, M_AGP); 311 agp_generic_detach(dev); 312 return ENOMEM; 313 } 314 bzero(gatt->ag_virtual, gatt->ag_entries * sizeof(u_int32_t)); 315 316 gatt->ag_physical = vtophys((vm_offset_t) gatt->ag_virtual); 317 agp_flush_cache(); 318 /* Install the GATT. */ 319 WRITE4(AGP_I810_PGTBL_CTL, gatt->ag_physical | 1); 320 } else if ( sc->chiptype == CHIP_I830 ) { 321 /* The i830 automatically initializes the 128k gatt on boot. */ 322 unsigned int gcc1, pgtblctl; 323 324 gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 1); 325 switch (gcc1 & AGP_I830_GCC1_GMS) { 326 case AGP_I830_GCC1_GMS_STOLEN_512: 327 sc->stolen = (512 - 132) * 1024 / 4096; 328 break; 329 case AGP_I830_GCC1_GMS_STOLEN_1024: 330 sc->stolen = (1024 - 132) * 1024 / 4096; 331 break; 332 case AGP_I830_GCC1_GMS_STOLEN_8192: 333 sc->stolen = (8192 - 132) * 1024 / 4096; 334 break; 335 default: 336 sc->stolen = 0; 337 device_printf(dev, "unknown memory configuration, disabling\n"); 338 agp_generic_detach(dev); 339 return EINVAL; 340 } 341 if (sc->stolen > 0) 342 device_printf(dev, "detected %dk stolen memory\n", sc->stolen * 4); 343 device_printf(dev, "aperture size is %dM\n", sc->initial_aperture / 1024 / 1024); 344 345 /* GATT address is already in there, make sure it's enabled */ 346 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 347 pgtblctl |= 1; 348 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 349 350 gatt->ag_physical = pgtblctl & ~1; 351 } else { /* CHIP_I855 */ 352 /* The i855 automatically initializes the 128k gatt on boot. */ 353 unsigned int gcc1, pgtblctl; 354 355 gcc1 = pci_read_config(sc->bdev, AGP_I855_GCC1, 1); 356 switch (gcc1 & AGP_I855_GCC1_GMS) { 357 case AGP_I855_GCC1_GMS_STOLEN_1M: 358 sc->stolen = (1024 - 132) * 1024 / 4096; 359 break; 360 case AGP_I855_GCC1_GMS_STOLEN_4M: 361 sc->stolen = (4096 - 132) * 1024 / 4096; 362 break; 363 case AGP_I855_GCC1_GMS_STOLEN_8M: 364 sc->stolen = (8192 - 132) * 1024 / 4096; 365 break; 366 case AGP_I855_GCC1_GMS_STOLEN_16M: 367 sc->stolen = (16384 - 132) * 1024 / 4096; 368 break; 369 case AGP_I855_GCC1_GMS_STOLEN_32M: 370 sc->stolen = (32768 - 132) * 1024 / 4096; 371 break; 372 default: 373 sc->stolen = 0; 374 device_printf(dev, "unknown memory configuration, disabling\n"); 375 agp_generic_detach(dev); 376 return EINVAL; 377 } 378 if (sc->stolen > 0) 379 device_printf(dev, "detected %dk stolen memory\n", sc->stolen * 4); 380 device_printf(dev, "aperture size is %dM\n", sc->initial_aperture / 1024 / 1024); 381 382 /* GATT address is already in there, make sure it's enabled */ 383 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 384 pgtblctl |= 1; 385 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 386 387 gatt->ag_physical = pgtblctl & ~1; 388 } 389 390 /* Add a device for the drm to attach to */ 391 if (!device_add_child( dev, "drmsub", -1 )) 392 printf("out of memory...\n"); 393 394 return bus_generic_attach(dev); 395 } 396 397 static int 398 agp_i810_detach(device_t dev) 399 { 400 struct agp_i810_softc *sc = device_get_softc(dev); 401 int error; 402 device_t child; 403 404 error = agp_generic_detach(dev); 405 if (error) 406 return error; 407 408 /* Clear the GATT base. */ 409 if ( sc->chiptype == CHIP_I810 ) { 410 WRITE4(AGP_I810_PGTBL_CTL, 0); 411 } else { 412 unsigned int pgtblctl; 413 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 414 pgtblctl &= ~1; 415 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 416 } 417 418 /* Put the aperture back the way it started. */ 419 AGP_SET_APERTURE(dev, sc->initial_aperture); 420 421 if ( sc->chiptype == CHIP_I810 ) { 422 contigfree(sc->gatt->ag_virtual, 64 * 1024, M_AGP); 423 } 424 free(sc->gatt, M_AGP); 425 426 bus_release_resource(dev, SYS_RES_MEMORY, 427 AGP_I810_MMADR, sc->regs); 428 429 child = device_find_child( dev, "drmsub", 0 ); 430 if (child) 431 device_delete_child( dev, child ); 432 433 return 0; 434 } 435 436 static u_int32_t 437 agp_i810_get_aperture(device_t dev) 438 { 439 struct agp_i810_softc *sc = device_get_softc(dev); 440 441 if ( sc->chiptype == CHIP_I810 ) { 442 u_int16_t miscc; 443 miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2); 444 if ((miscc & AGP_I810_MISCC_WINSIZE) == AGP_I810_MISCC_WINSIZE_32) 445 return 32 * 1024 * 1024; 446 else 447 return 64 * 1024 * 1024; 448 } else if ( sc->chiptype == CHIP_I830 ) { 449 unsigned int gcc1; 450 451 gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 2); 452 if ((gcc1 & AGP_I830_GCC1_GMASIZE) == AGP_I830_GCC1_GMASIZE_64) 453 return 64 * 1024 * 1024; 454 else 455 return 128 * 1024 * 1024; 456 } else { /* CHIP_I855 */ 457 return 128 * 1024 * 1024; 458 } 459 } 460 461 static int 462 agp_i810_set_aperture(device_t dev, u_int32_t aperture) 463 { 464 struct agp_i810_softc *sc = device_get_softc(dev); 465 u_int16_t miscc; 466 467 if ( sc->chiptype == CHIP_I810 ) { 468 /* 469 * Double check for sanity. 470 */ 471 if (aperture != 32 * 1024 * 1024 && aperture != 64 * 1024 * 1024) { 472 device_printf(dev, "bad aperture size %d\n", aperture); 473 return EINVAL; 474 } 475 476 miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2); 477 miscc &= ~AGP_I810_MISCC_WINSIZE; 478 if (aperture == 32 * 1024 * 1024) 479 miscc |= AGP_I810_MISCC_WINSIZE_32; 480 else 481 miscc |= AGP_I810_MISCC_WINSIZE_64; 482 483 pci_write_config(sc->bdev, AGP_I810_MISCC, miscc, 2); 484 } else if ( sc->chiptype == CHIP_I830 ) { 485 unsigned int gcc1; 486 487 if (aperture != 64 * 1024 * 1024 && aperture != 128 * 1024 * 1024) { 488 device_printf(dev, "bad aperture size %d\n", aperture); 489 return EINVAL; 490 } 491 gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 2); 492 gcc1 &= ~AGP_I830_GCC1_GMASIZE; 493 if (aperture == 64 * 1024 * 1024) 494 gcc1 |= AGP_I830_GCC1_GMASIZE_64; 495 else 496 gcc1 |= AGP_I830_GCC1_GMASIZE_128; 497 498 pci_write_config(sc->bdev, AGP_I830_GCC1, gcc1, 2); 499 } else { /* CHIP_I855 */ 500 if (aperture != 128 * 1024 * 1024) { 501 device_printf(dev, "bad aperture size %d\n", aperture); 502 return EINVAL; 503 } 504 } 505 506 return 0; 507 } 508 509 static int 510 agp_i810_bind_page(device_t dev, int offset, vm_offset_t physical) 511 { 512 struct agp_i810_softc *sc = device_get_softc(dev); 513 514 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) { 515 device_printf(dev, "failed: offset is 0x%08x, shift is %d, entries is %d\n", offset, AGP_PAGE_SHIFT, sc->gatt->ag_entries); 516 return EINVAL; 517 } 518 519 if ( sc->chiptype != CHIP_I810 ) { 520 if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) { 521 device_printf(dev, "trying to bind into stolen memory"); 522 return EINVAL; 523 } 524 } 525 526 WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, physical | 1); 527 return 0; 528 } 529 530 static int 531 agp_i810_unbind_page(device_t dev, int offset) 532 { 533 struct agp_i810_softc *sc = device_get_softc(dev); 534 535 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 536 return EINVAL; 537 538 if ( sc->chiptype != CHIP_I810 ) { 539 if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) { 540 device_printf(dev, "trying to unbind from stolen memory"); 541 return EINVAL; 542 } 543 } 544 545 WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, 0); 546 return 0; 547 } 548 549 /* 550 * Writing via memory mapped registers already flushes all TLBs. 551 */ 552 static void 553 agp_i810_flush_tlb(device_t dev) 554 { 555 } 556 557 static int 558 agp_i810_enable(device_t dev, u_int32_t mode) 559 { 560 561 return 0; 562 } 563 564 static struct agp_memory * 565 agp_i810_alloc_memory(device_t dev, int type, vm_size_t size) 566 { 567 struct agp_i810_softc *sc = device_get_softc(dev); 568 struct agp_memory *mem; 569 570 if ((size & (AGP_PAGE_SIZE - 1)) != 0) 571 return 0; 572 573 if (sc->agp.as_allocated + size > sc->agp.as_maxmem) 574 return 0; 575 576 if (type == 1) { 577 /* 578 * Mapping local DRAM into GATT. 579 */ 580 if ( sc->chiptype != CHIP_I810 ) 581 return 0; 582 if (size != sc->dcache_size) 583 return 0; 584 } else if (type == 2) { 585 /* 586 * Bogus mapping of a single page for the hardware cursor. 587 */ 588 if (size != AGP_PAGE_SIZE) 589 return 0; 590 } 591 592 mem = malloc(sizeof *mem, M_AGP, M_WAITOK); 593 mem->am_id = sc->agp.as_nextid++; 594 mem->am_size = size; 595 mem->am_type = type; 596 if (type != 1) 597 mem->am_obj = vm_object_allocate(OBJT_DEFAULT, 598 atop(round_page(size))); 599 else 600 mem->am_obj = 0; 601 602 if (type == 2) { 603 /* 604 * Allocate and wire down the page now so that we can 605 * get its physical address. 606 */ 607 vm_page_t m; 608 609 VM_OBJECT_LOCK(mem->am_obj); 610 m = vm_page_grab(mem->am_obj, 0, 611 VM_ALLOC_WIRED | VM_ALLOC_ZERO | VM_ALLOC_RETRY); 612 VM_OBJECT_UNLOCK(mem->am_obj); 613 if ((m->flags & PG_ZERO) == 0) 614 pmap_zero_page(m); 615 vm_page_lock_queues(); 616 mem->am_physical = VM_PAGE_TO_PHYS(m); 617 vm_page_wakeup(m); 618 vm_page_unlock_queues(); 619 } else { 620 mem->am_physical = 0; 621 } 622 623 mem->am_offset = 0; 624 mem->am_is_bound = 0; 625 TAILQ_INSERT_TAIL(&sc->agp.as_memory, mem, am_link); 626 sc->agp.as_allocated += size; 627 628 return mem; 629 } 630 631 static int 632 agp_i810_free_memory(device_t dev, struct agp_memory *mem) 633 { 634 struct agp_i810_softc *sc = device_get_softc(dev); 635 636 if (mem->am_is_bound) 637 return EBUSY; 638 639 if (mem->am_type == 2) { 640 /* 641 * Unwire the page which we wired in alloc_memory. 642 */ 643 vm_page_t m; 644 645 VM_OBJECT_LOCK(mem->am_obj); 646 m = vm_page_lookup(mem->am_obj, 0); 647 VM_OBJECT_UNLOCK(mem->am_obj); 648 vm_page_lock_queues(); 649 vm_page_unwire(m, 0); 650 vm_page_unlock_queues(); 651 } 652 653 sc->agp.as_allocated -= mem->am_size; 654 TAILQ_REMOVE(&sc->agp.as_memory, mem, am_link); 655 if (mem->am_obj) 656 vm_object_deallocate(mem->am_obj); 657 free(mem, M_AGP); 658 return 0; 659 } 660 661 static int 662 agp_i810_bind_memory(device_t dev, struct agp_memory *mem, 663 vm_offset_t offset) 664 { 665 struct agp_i810_softc *sc = device_get_softc(dev); 666 vm_offset_t i; 667 668 if (mem->am_type != 1) 669 return agp_generic_bind_memory(dev, mem, offset); 670 671 if ( sc->chiptype != CHIP_I810 ) 672 return EINVAL; 673 674 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) { 675 WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, 676 i | 3); 677 } 678 679 return 0; 680 } 681 682 static int 683 agp_i810_unbind_memory(device_t dev, struct agp_memory *mem) 684 { 685 struct agp_i810_softc *sc = device_get_softc(dev); 686 vm_offset_t i; 687 688 if (mem->am_type != 1) 689 return agp_generic_unbind_memory(dev, mem); 690 691 if ( sc->chiptype != CHIP_I810 ) 692 return EINVAL; 693 694 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) 695 WRITE4(AGP_I810_GTT + (i >> AGP_PAGE_SHIFT) * 4, 0); 696 697 return 0; 698 } 699 700 static int 701 agp_i810_print_child(device_t dev, device_t child) 702 { 703 int retval = 0; 704 705 retval += bus_print_child_header(dev, child); 706 retval += printf(": (child of agp_i810.c)"); 707 retval += bus_print_child_footer(dev, child); 708 709 return retval; 710 } 711 712 static device_method_t agp_i810_methods[] = { 713 /* Device interface */ 714 DEVMETHOD(device_probe, agp_i810_probe), 715 DEVMETHOD(device_attach, agp_i810_attach), 716 DEVMETHOD(device_detach, agp_i810_detach), 717 DEVMETHOD(device_shutdown, bus_generic_shutdown), 718 DEVMETHOD(device_suspend, bus_generic_suspend), 719 DEVMETHOD(device_resume, bus_generic_resume), 720 721 /* AGP interface */ 722 DEVMETHOD(agp_get_aperture, agp_i810_get_aperture), 723 DEVMETHOD(agp_set_aperture, agp_i810_set_aperture), 724 DEVMETHOD(agp_bind_page, agp_i810_bind_page), 725 DEVMETHOD(agp_unbind_page, agp_i810_unbind_page), 726 DEVMETHOD(agp_flush_tlb, agp_i810_flush_tlb), 727 DEVMETHOD(agp_enable, agp_i810_enable), 728 DEVMETHOD(agp_alloc_memory, agp_i810_alloc_memory), 729 DEVMETHOD(agp_free_memory, agp_i810_free_memory), 730 DEVMETHOD(agp_bind_memory, agp_i810_bind_memory), 731 DEVMETHOD(agp_unbind_memory, agp_i810_unbind_memory), 732 733 /* bus methods */ 734 DEVMETHOD(bus_print_child, agp_i810_print_child), 735 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), 736 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 737 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 738 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 739 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 740 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 741 { 0, 0 } 742 }; 743 744 static driver_t agp_i810_driver = { 745 "agp", 746 agp_i810_methods, 747 sizeof(struct agp_i810_softc), 748 }; 749 750 static devclass_t agp_devclass; 751 752 DRIVER_MODULE(agp_i810, pci, agp_i810_driver, agp_devclass, 0, 0); 753 MODULE_DEPEND(agp_i810, agp, 1, 1, 1); 754 MODULE_DEPEND(agp_i810, pci, 1, 1, 1); 755