agp_i810.c revision 116192
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: head/sys/dev/agp/agp_i810.c 116192 2003-06-11 06:34:30Z obrien $"); 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 <pci/pcivar.h> 49#include <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 63MALLOC_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 73struct 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 86static const char* 87agp_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 */ 140static device_t 141agp_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 181static int 182agp_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 int devid = pci_get_devid(dev); 191 192 bdev = agp_i810_find_bridge(dev); 193 if (!bdev) { 194 if (bootverbose) 195 printf("I810: can't find bridge device\n"); 196 return ENXIO; 197 } 198 199 /* 200 * checking whether internal graphics device has been activated. 201 */ 202 if ( (devid == 0x71218086 ) || 203 (devid == 0x71238086 ) || 204 (devid == 0x71258086 ) || 205 (devid == 0x11328086 ) ) { 206 smram = pci_read_config(bdev, AGP_I810_SMRAM, 1); 207 if ((smram & AGP_I810_SMRAM_GMS) 208 == AGP_I810_SMRAM_GMS_DISABLED) { 209 if (bootverbose) 210 printf("I810: disabled, not probing\n"); 211 return ENXIO; 212 } 213 } else { /* I830MG */ 214 unsigned int gcc1; 215 gcc1 = pci_read_config(bdev, AGP_I830_GCC1, 1); 216 if ((gcc1 & AGP_I830_GCC1_DEV2) == AGP_I830_GCC1_DEV2_DISABLED) { 217 if (bootverbose) 218 printf("I830: disabled, not probing\n"); 219 return ENXIO; 220 } 221 } 222 223 device_verbose(dev); 224 device_set_desc(dev, desc); 225 return 0; 226 } 227 228 return ENXIO; 229} 230 231static int 232agp_i810_attach(device_t dev) 233{ 234 struct agp_i810_softc *sc = device_get_softc(dev); 235 struct agp_gatt *gatt; 236 int error, rid; 237 238 sc->bdev = agp_i810_find_bridge(dev); 239 if (!sc->bdev) 240 return ENOENT; 241 242 error = agp_generic_attach(dev); 243 if (error) 244 return error; 245 246 switch (pci_get_devid(dev)) { 247 case 0x71218086: 248 case 0x71238086: 249 case 0x71258086: 250 case 0x11328086: 251 sc->chiptype = CHIP_I810; 252 break; 253 case 0x35778086: 254 case 0x25628086: 255 sc->chiptype = CHIP_I830; 256 break; 257 case 0x35828086: 258 case 0x25728086: 259 sc->chiptype = CHIP_I855; 260 break; 261 }; 262 263 /* Same for i810 and i830 */ 264 rid = AGP_I810_MMADR; 265 sc->regs = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 266 0, ~0, 1, RF_ACTIVE); 267 if (!sc->regs) { 268 agp_generic_detach(dev); 269 return ENOMEM; 270 } 271 sc->bst = rman_get_bustag(sc->regs); 272 sc->bsh = rman_get_bushandle(sc->regs); 273 274 sc->initial_aperture = AGP_GET_APERTURE(dev); 275 276 gatt = malloc( sizeof(struct agp_gatt), M_AGP, M_NOWAIT); 277 if (!gatt) { 278 agp_generic_detach(dev); 279 return ENOMEM; 280 } 281 sc->gatt = gatt; 282 283 gatt->ag_entries = AGP_GET_APERTURE(dev) >> AGP_PAGE_SHIFT; 284 285 if ( sc->chiptype == CHIP_I810 ) { 286 /* Some i810s have on-chip memory called dcache */ 287 if (READ1(AGP_I810_DRT) & AGP_I810_DRT_POPULATED) 288 sc->dcache_size = 4 * 1024 * 1024; 289 else 290 sc->dcache_size = 0; 291 292 /* According to the specs the gatt on the i810 must be 64k */ 293 gatt->ag_virtual = contigmalloc( 64 * 1024, M_AGP, 0, 294 0, ~0, PAGE_SIZE, 0); 295 if (!gatt->ag_virtual) { 296 if (bootverbose) 297 device_printf(dev, "contiguous allocation failed\n"); 298 free(gatt, M_AGP); 299 agp_generic_detach(dev); 300 return ENOMEM; 301 } 302 bzero(gatt->ag_virtual, gatt->ag_entries * sizeof(u_int32_t)); 303 304 gatt->ag_physical = vtophys((vm_offset_t) gatt->ag_virtual); 305 agp_flush_cache(); 306 /* Install the GATT. */ 307 WRITE4(AGP_I810_PGTBL_CTL, gatt->ag_physical | 1); 308 } else if ( sc->chiptype == CHIP_I830 ) { 309 /* The i830 automatically initializes the 128k gatt on boot. */ 310 unsigned int gcc1, pgtblctl; 311 312 gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 1); 313 switch (gcc1 & AGP_I830_GCC1_GMS) { 314 case AGP_I830_GCC1_GMS_STOLEN_512: 315 sc->stolen = (512 - 132) * 1024 / 4096; 316 break; 317 case AGP_I830_GCC1_GMS_STOLEN_1024: 318 sc->stolen = (1024 - 132) * 1024 / 4096; 319 break; 320 case AGP_I830_GCC1_GMS_STOLEN_8192: 321 sc->stolen = (8192 - 132) * 1024 / 4096; 322 break; 323 default: 324 sc->stolen = 0; 325 device_printf(dev, "unknown memory configuration, disabling\n"); 326 agp_generic_detach(dev); 327 return EINVAL; 328 } 329 if (sc->stolen > 0) 330 device_printf(dev, "detected %dk stolen memory\n", sc->stolen * 4); 331 device_printf(dev, "aperture size is %dM\n", sc->initial_aperture / 1024 / 1024); 332 333 /* GATT address is already in there, make sure it's enabled */ 334 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 335 pgtblctl |= 1; 336 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 337 338 gatt->ag_physical = pgtblctl & ~1; 339 } else { /* CHIP_I855 */ 340 /* The 855GM automatically initializes the 128k gatt on boot. */ 341 unsigned int gcc1, pgtblctl; 342 343 gcc1 = pci_read_config(sc->bdev, AGP_I855_GCC1, 1); 344 switch (gcc1 & AGP_I855_GCC1_GMS) { 345 case AGP_I855_GCC1_GMS_STOLEN_1M: 346 sc->stolen = (1024 - 132) * 1024 / 4096; 347 break; 348 case AGP_I855_GCC1_GMS_STOLEN_4M: 349 sc->stolen = (4096 - 132) * 1024 / 4096; 350 break; 351 case AGP_I855_GCC1_GMS_STOLEN_8M: 352 sc->stolen = (8192 - 132) * 1024 / 4096; 353 break; 354 case AGP_I855_GCC1_GMS_STOLEN_16M: 355 sc->stolen = (16384 - 132) * 1024 / 4096; 356 break; 357 case AGP_I855_GCC1_GMS_STOLEN_32M: 358 sc->stolen = (32768 - 132) * 1024 / 4096; 359 break; 360 default: 361 sc->stolen = 0; 362 device_printf(dev, "unknown memory configuration, disabling\n"); 363 agp_generic_detach(dev); 364 return EINVAL; 365 } 366 if (sc->stolen > 0) 367 device_printf(dev, "detected %dk stolen memory\n", sc->stolen * 4); 368 device_printf(dev, "aperture size is %dM\n", sc->initial_aperture / 1024 / 1024); 369 370 /* GATT address is already in there, make sure it's enabled */ 371 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 372 pgtblctl |= 1; 373 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 374 375 gatt->ag_physical = pgtblctl & ~1; 376 } 377 378 return 0; 379} 380 381static int 382agp_i810_detach(device_t dev) 383{ 384 struct agp_i810_softc *sc = device_get_softc(dev); 385 int error; 386 387 error = agp_generic_detach(dev); 388 if (error) 389 return error; 390 391 /* Clear the GATT base. */ 392 if ( sc->chiptype == CHIP_I810 ) { 393 WRITE4(AGP_I810_PGTBL_CTL, 0); 394 } else { 395 unsigned int pgtblctl; 396 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 397 pgtblctl &= ~1; 398 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 399 } 400 401 /* Put the aperture back the way it started. */ 402 AGP_SET_APERTURE(dev, sc->initial_aperture); 403 404 if ( sc->chiptype == CHIP_I810 ) { 405 contigfree(sc->gatt->ag_virtual, 64 * 1024, M_AGP); 406 } 407 free(sc->gatt, M_AGP); 408 409 bus_release_resource(dev, SYS_RES_MEMORY, 410 AGP_I810_MMADR, sc->regs); 411 412 return 0; 413} 414 415static u_int32_t 416agp_i810_get_aperture(device_t dev) 417{ 418 struct agp_i810_softc *sc = device_get_softc(dev); 419 420 if ( sc->chiptype == CHIP_I810 ) { 421 u_int16_t miscc; 422 miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2); 423 if ((miscc & AGP_I810_MISCC_WINSIZE) == AGP_I810_MISCC_WINSIZE_32) 424 return 32 * 1024 * 1024; 425 else 426 return 64 * 1024 * 1024; 427 } else if ( sc->chiptype == CHIP_I830 ) { 428 unsigned int gcc1; 429 430 gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 2); 431 if ((gcc1 & AGP_I830_GCC1_GMASIZE) == AGP_I830_GCC1_GMASIZE_64) 432 return 64 * 1024 * 1024; 433 else 434 return 128 * 1024 * 1024; 435 } else { /* CHIP_I855 */ 436 return 128 * 1024 * 1024; 437 } 438} 439 440static int 441agp_i810_set_aperture(device_t dev, u_int32_t aperture) 442{ 443 struct agp_i810_softc *sc = device_get_softc(dev); 444 u_int16_t miscc; 445 446 if ( sc->chiptype == CHIP_I810 ) { 447 /* 448 * Double check for sanity. 449 */ 450 if (aperture != 32 * 1024 * 1024 && aperture != 64 * 1024 * 1024) { 451 device_printf(dev, "bad aperture size %d\n", aperture); 452 return EINVAL; 453 } 454 455 miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2); 456 miscc &= ~AGP_I810_MISCC_WINSIZE; 457 if (aperture == 32 * 1024 * 1024) 458 miscc |= AGP_I810_MISCC_WINSIZE_32; 459 else 460 miscc |= AGP_I810_MISCC_WINSIZE_64; 461 462 pci_write_config(sc->bdev, AGP_I810_MISCC, miscc, 2); 463 } else if ( sc->chiptype == CHIP_I830 ) { 464 unsigned int gcc1; 465 466 if (aperture != 64 * 1024 * 1024 && aperture != 128 * 1024 * 1024) { 467 device_printf(dev, "bad aperture size %d\n", aperture); 468 return EINVAL; 469 } 470 gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 2); 471 gcc1 &= ~AGP_I830_GCC1_GMASIZE; 472 if (aperture == 64 * 1024 * 1024) 473 gcc1 |= AGP_I830_GCC1_GMASIZE_64; 474 else 475 gcc1 |= AGP_I830_GCC1_GMASIZE_128; 476 477 pci_write_config(sc->bdev, AGP_I830_GCC1, gcc1, 2); 478 } else { /* CHIP_I855 */ 479 if (aperture != 128 * 1024 * 1024) { 480 device_printf(dev, "bad aperture size %d\n", aperture); 481 return EINVAL; 482 } 483 } 484 485 return 0; 486} 487 488static int 489agp_i810_bind_page(device_t dev, int offset, vm_offset_t physical) 490{ 491 struct agp_i810_softc *sc = device_get_softc(dev); 492 493 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) { 494 device_printf(dev, "failed: offset is 0x%08x, shift is %d, entries is %d\n", offset, AGP_PAGE_SHIFT, sc->gatt->ag_entries); 495 return EINVAL; 496 } 497 498 if ( sc->chiptype != CHIP_I810 ) { 499 if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) { 500 device_printf(dev, "trying to bind into stolen memory"); 501 return EINVAL; 502 } 503 } 504 505 WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, physical | 1); 506 return 0; 507} 508 509static int 510agp_i810_unbind_page(device_t dev, int offset) 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 return EINVAL; 516 517 if ( sc->chiptype != CHIP_I810 ) { 518 if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) { 519 device_printf(dev, "trying to unbind from stolen memory"); 520 return EINVAL; 521 } 522 } 523 524 WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, 0); 525 return 0; 526} 527 528/* 529 * Writing via memory mapped registers already flushes all TLBs. 530 */ 531static void 532agp_i810_flush_tlb(device_t dev) 533{ 534} 535 536static int 537agp_i810_enable(device_t dev, u_int32_t mode) 538{ 539 540 return 0; 541} 542 543static struct agp_memory * 544agp_i810_alloc_memory(device_t dev, int type, vm_size_t size) 545{ 546 struct agp_i810_softc *sc = device_get_softc(dev); 547 struct agp_memory *mem; 548 549 if ((size & (AGP_PAGE_SIZE - 1)) != 0) 550 return 0; 551 552 if (sc->agp.as_allocated + size > sc->agp.as_maxmem) 553 return 0; 554 555 if (type == 1) { 556 /* 557 * Mapping local DRAM into GATT. 558 */ 559 if ( sc->chiptype != CHIP_I810 ) 560 return 0; 561 if (size != sc->dcache_size) 562 return 0; 563 } else if (type == 2) { 564 /* 565 * Bogus mapping of a single page for the hardware cursor. 566 */ 567 if (size != AGP_PAGE_SIZE) 568 return 0; 569 } 570 571 mem = malloc(sizeof *mem, M_AGP, M_WAITOK); 572 mem->am_id = sc->agp.as_nextid++; 573 mem->am_size = size; 574 mem->am_type = type; 575 if (type != 1) 576 mem->am_obj = vm_object_allocate(OBJT_DEFAULT, 577 atop(round_page(size))); 578 else 579 mem->am_obj = 0; 580 581 if (type == 2) { 582 /* 583 * Allocate and wire down the page now so that we can 584 * get its physical address. 585 */ 586 vm_page_t m; 587 m = vm_page_grab(mem->am_obj, 0, 588 VM_ALLOC_WIRED | VM_ALLOC_ZERO | VM_ALLOC_RETRY); 589 if ((m->flags & PG_ZERO) == 0) 590 pmap_zero_page(m); 591 vm_page_lock_queues(); 592 mem->am_physical = VM_PAGE_TO_PHYS(m); 593 vm_page_wakeup(m); 594 vm_page_unlock_queues(); 595 } else { 596 mem->am_physical = 0; 597 } 598 599 mem->am_offset = 0; 600 mem->am_is_bound = 0; 601 TAILQ_INSERT_TAIL(&sc->agp.as_memory, mem, am_link); 602 sc->agp.as_allocated += size; 603 604 return mem; 605} 606 607static int 608agp_i810_free_memory(device_t dev, struct agp_memory *mem) 609{ 610 struct agp_i810_softc *sc = device_get_softc(dev); 611 612 if (mem->am_is_bound) 613 return EBUSY; 614 615 if (mem->am_type == 2) { 616 /* 617 * Unwire the page which we wired in alloc_memory. 618 */ 619 vm_page_t m = vm_page_lookup(mem->am_obj, 0); 620 vm_page_lock_queues(); 621 vm_page_unwire(m, 0); 622 vm_page_unlock_queues(); 623 } 624 625 sc->agp.as_allocated -= mem->am_size; 626 TAILQ_REMOVE(&sc->agp.as_memory, mem, am_link); 627 if (mem->am_obj) 628 vm_object_deallocate(mem->am_obj); 629 free(mem, M_AGP); 630 return 0; 631} 632 633static int 634agp_i810_bind_memory(device_t dev, struct agp_memory *mem, 635 vm_offset_t offset) 636{ 637 struct agp_i810_softc *sc = device_get_softc(dev); 638 vm_offset_t i; 639 640 if (mem->am_type != 1) 641 return agp_generic_bind_memory(dev, mem, offset); 642 643 if ( sc->chiptype != CHIP_I810 ) 644 return EINVAL; 645 646 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) { 647 WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, 648 i | 3); 649 } 650 651 return 0; 652} 653 654static int 655agp_i810_unbind_memory(device_t dev, struct agp_memory *mem) 656{ 657 struct agp_i810_softc *sc = device_get_softc(dev); 658 vm_offset_t i; 659 660 if (mem->am_type != 1) 661 return agp_generic_unbind_memory(dev, mem); 662 663 if ( sc->chiptype != CHIP_I810 ) 664 return EINVAL; 665 666 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) 667 WRITE4(AGP_I810_GTT + (i >> AGP_PAGE_SHIFT) * 4, 0); 668 669 return 0; 670} 671 672static device_method_t agp_i810_methods[] = { 673 /* Device interface */ 674 DEVMETHOD(device_probe, agp_i810_probe), 675 DEVMETHOD(device_attach, agp_i810_attach), 676 DEVMETHOD(device_detach, agp_i810_detach), 677 DEVMETHOD(device_shutdown, bus_generic_shutdown), 678 DEVMETHOD(device_suspend, bus_generic_suspend), 679 DEVMETHOD(device_resume, bus_generic_resume), 680 681 /* AGP interface */ 682 DEVMETHOD(agp_get_aperture, agp_i810_get_aperture), 683 DEVMETHOD(agp_set_aperture, agp_i810_set_aperture), 684 DEVMETHOD(agp_bind_page, agp_i810_bind_page), 685 DEVMETHOD(agp_unbind_page, agp_i810_unbind_page), 686 DEVMETHOD(agp_flush_tlb, agp_i810_flush_tlb), 687 DEVMETHOD(agp_enable, agp_i810_enable), 688 DEVMETHOD(agp_alloc_memory, agp_i810_alloc_memory), 689 DEVMETHOD(agp_free_memory, agp_i810_free_memory), 690 DEVMETHOD(agp_bind_memory, agp_i810_bind_memory), 691 DEVMETHOD(agp_unbind_memory, agp_i810_unbind_memory), 692 693 { 0, 0 } 694}; 695 696static driver_t agp_i810_driver = { 697 "agp", 698 agp_i810_methods, 699 sizeof(struct agp_i810_softc), 700}; 701 702static devclass_t agp_devclass; 703 704DRIVER_MODULE(agp_i810, pci, agp_i810_driver, agp_devclass, 0, 0); 705MODULE_DEPEND(agp_i810, agp, 1, 1, 1); 706MODULE_DEPEND(agp_i810, pci, 1, 1, 1); 707