agp_i810.c revision 129878
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 129878 2004-05-30 20:00:41Z phk $"); 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/module.h> 43#include <sys/bus.h> 44#include <sys/lock.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 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 if (resource_disabled("agp", device_get_unit(dev))) 187 return (ENXIO); 188 desc = agp_i810_match(dev); 189 if (desc) { 190 device_t bdev; 191 u_int8_t smram; 192 unsigned int gcc1; 193 int devid = pci_get_devid(dev); 194 195 bdev = agp_i810_find_bridge(dev); 196 if (!bdev) { 197 if (bootverbose) 198 printf("I810: can't find bridge device\n"); 199 return ENXIO; 200 } 201 202 /* 203 * checking whether internal graphics device has been activated. 204 */ 205 switch (devid) { 206 /* i810 */ 207 case 0x71218086: 208 case 0x71238086: 209 case 0x71258086: 210 case 0x11328086: 211 smram = pci_read_config(bdev, AGP_I810_SMRAM, 1); 212 if ((smram & AGP_I810_SMRAM_GMS) 213 == AGP_I810_SMRAM_GMS_DISABLED) { 214 if (bootverbose) 215 printf("I810: disabled, not probing\n"); 216 return ENXIO; 217 } 218 break; 219 220 /* i830 */ 221 case 0x35778086: 222 case 0x35828086: 223 case 0x25628086: 224 case 0x25728086: 225 gcc1 = pci_read_config(bdev, AGP_I830_GCC1, 1); 226 if ((gcc1 & AGP_I830_GCC1_DEV2) == AGP_I830_GCC1_DEV2_DISABLED) { 227 if (bootverbose) 228 printf("I830: disabled, not probing\n"); 229 return ENXIO; 230 } 231 break; 232 233 default: 234 return ENXIO; 235 } 236 237 device_verbose(dev); 238 device_set_desc(dev, desc); 239 return 0; 240 } 241 242 return ENXIO; 243} 244 245static int 246agp_i810_attach(device_t dev) 247{ 248 struct agp_i810_softc *sc = device_get_softc(dev); 249 struct agp_gatt *gatt; 250 int error, rid; 251 252 sc->bdev = agp_i810_find_bridge(dev); 253 if (!sc->bdev) 254 return ENOENT; 255 256 error = agp_generic_attach(dev); 257 if (error) 258 return error; 259 260 switch (pci_get_devid(dev)) { 261 case 0x71218086: 262 case 0x71238086: 263 case 0x71258086: 264 case 0x11328086: 265 sc->chiptype = CHIP_I810; 266 break; 267 case 0x35778086: 268 case 0x25628086: 269 sc->chiptype = CHIP_I830; 270 break; 271 case 0x35828086: 272 case 0x25728086: 273 sc->chiptype = CHIP_I855; 274 break; 275 }; 276 277 /* Same for i810 and i830 */ 278 rid = AGP_I810_MMADR; 279 sc->regs = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 280 RF_ACTIVE); 281 if (!sc->regs) { 282 agp_generic_detach(dev); 283 return ENOMEM; 284 } 285 sc->bst = rman_get_bustag(sc->regs); 286 sc->bsh = rman_get_bushandle(sc->regs); 287 288 sc->initial_aperture = AGP_GET_APERTURE(dev); 289 290 gatt = malloc( sizeof(struct agp_gatt), M_AGP, M_NOWAIT); 291 if (!gatt) { 292 agp_generic_detach(dev); 293 return ENOMEM; 294 } 295 sc->gatt = gatt; 296 297 gatt->ag_entries = AGP_GET_APERTURE(dev) >> AGP_PAGE_SHIFT; 298 299 if ( sc->chiptype == CHIP_I810 ) { 300 /* Some i810s have on-chip memory called dcache */ 301 if (READ1(AGP_I810_DRT) & AGP_I810_DRT_POPULATED) 302 sc->dcache_size = 4 * 1024 * 1024; 303 else 304 sc->dcache_size = 0; 305 306 /* According to the specs the gatt on the i810 must be 64k */ 307 gatt->ag_virtual = contigmalloc( 64 * 1024, M_AGP, 0, 308 0, ~0, PAGE_SIZE, 0); 309 if (!gatt->ag_virtual) { 310 if (bootverbose) 311 device_printf(dev, "contiguous allocation failed\n"); 312 free(gatt, M_AGP); 313 agp_generic_detach(dev); 314 return ENOMEM; 315 } 316 bzero(gatt->ag_virtual, gatt->ag_entries * sizeof(u_int32_t)); 317 318 gatt->ag_physical = vtophys((vm_offset_t) gatt->ag_virtual); 319 agp_flush_cache(); 320 /* Install the GATT. */ 321 WRITE4(AGP_I810_PGTBL_CTL, gatt->ag_physical | 1); 322 } else if ( sc->chiptype == CHIP_I830 ) { 323 /* The i830 automatically initializes the 128k gatt on boot. */ 324 unsigned int gcc1, pgtblctl; 325 326 gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 1); 327 switch (gcc1 & AGP_I830_GCC1_GMS) { 328 case AGP_I830_GCC1_GMS_STOLEN_512: 329 sc->stolen = (512 - 132) * 1024 / 4096; 330 break; 331 case AGP_I830_GCC1_GMS_STOLEN_1024: 332 sc->stolen = (1024 - 132) * 1024 / 4096; 333 break; 334 case AGP_I830_GCC1_GMS_STOLEN_8192: 335 sc->stolen = (8192 - 132) * 1024 / 4096; 336 break; 337 default: 338 sc->stolen = 0; 339 device_printf(dev, "unknown memory configuration, disabling\n"); 340 agp_generic_detach(dev); 341 return EINVAL; 342 } 343 if (sc->stolen > 0) 344 device_printf(dev, "detected %dk stolen memory\n", sc->stolen * 4); 345 device_printf(dev, "aperture size is %dM\n", sc->initial_aperture / 1024 / 1024); 346 347 /* GATT address is already in there, make sure it's enabled */ 348 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 349 pgtblctl |= 1; 350 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 351 352 gatt->ag_physical = pgtblctl & ~1; 353 } else { /* CHIP_I855 */ 354 /* The i855 automatically initializes the 128k gatt on boot. */ 355 unsigned int gcc1, pgtblctl; 356 357 gcc1 = pci_read_config(sc->bdev, AGP_I855_GCC1, 1); 358 switch (gcc1 & AGP_I855_GCC1_GMS) { 359 case AGP_I855_GCC1_GMS_STOLEN_1M: 360 sc->stolen = (1024 - 132) * 1024 / 4096; 361 break; 362 case AGP_I855_GCC1_GMS_STOLEN_4M: 363 sc->stolen = (4096 - 132) * 1024 / 4096; 364 break; 365 case AGP_I855_GCC1_GMS_STOLEN_8M: 366 sc->stolen = (8192 - 132) * 1024 / 4096; 367 break; 368 case AGP_I855_GCC1_GMS_STOLEN_16M: 369 sc->stolen = (16384 - 132) * 1024 / 4096; 370 break; 371 case AGP_I855_GCC1_GMS_STOLEN_32M: 372 sc->stolen = (32768 - 132) * 1024 / 4096; 373 break; 374 default: 375 sc->stolen = 0; 376 device_printf(dev, "unknown memory configuration, disabling\n"); 377 agp_generic_detach(dev); 378 return EINVAL; 379 } 380 if (sc->stolen > 0) 381 device_printf(dev, "detected %dk stolen memory\n", sc->stolen * 4); 382 device_printf(dev, "aperture size is %dM\n", sc->initial_aperture / 1024 / 1024); 383 384 /* GATT address is already in there, make sure it's enabled */ 385 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 386 pgtblctl |= 1; 387 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 388 389 gatt->ag_physical = pgtblctl & ~1; 390 } 391 392 /* Add a device for the drm to attach to */ 393 if (!device_add_child( dev, "drmsub", -1 )) 394 printf("out of memory...\n"); 395 396 return bus_generic_attach(dev); 397} 398 399static int 400agp_i810_detach(device_t dev) 401{ 402 struct agp_i810_softc *sc = device_get_softc(dev); 403 int error; 404 device_t child; 405 406 error = agp_generic_detach(dev); 407 if (error) 408 return error; 409 410 /* Clear the GATT base. */ 411 if ( sc->chiptype == CHIP_I810 ) { 412 WRITE4(AGP_I810_PGTBL_CTL, 0); 413 } else { 414 unsigned int pgtblctl; 415 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 416 pgtblctl &= ~1; 417 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 418 } 419 420 /* Put the aperture back the way it started. */ 421 AGP_SET_APERTURE(dev, sc->initial_aperture); 422 423 if ( sc->chiptype == CHIP_I810 ) { 424 contigfree(sc->gatt->ag_virtual, 64 * 1024, M_AGP); 425 } 426 free(sc->gatt, M_AGP); 427 428 bus_release_resource(dev, SYS_RES_MEMORY, 429 AGP_I810_MMADR, sc->regs); 430 431 child = device_find_child( dev, "drmsub", 0 ); 432 if (child) 433 device_delete_child( dev, child ); 434 435 return 0; 436} 437 438static u_int32_t 439agp_i810_get_aperture(device_t dev) 440{ 441 struct agp_i810_softc *sc = device_get_softc(dev); 442 443 if ( sc->chiptype == CHIP_I810 ) { 444 u_int16_t miscc; 445 miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2); 446 if ((miscc & AGP_I810_MISCC_WINSIZE) == AGP_I810_MISCC_WINSIZE_32) 447 return 32 * 1024 * 1024; 448 else 449 return 64 * 1024 * 1024; 450 } else if ( sc->chiptype == CHIP_I830 ) { 451 unsigned int gcc1; 452 453 gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 2); 454 if ((gcc1 & AGP_I830_GCC1_GMASIZE) == AGP_I830_GCC1_GMASIZE_64) 455 return 64 * 1024 * 1024; 456 else 457 return 128 * 1024 * 1024; 458 } else { /* CHIP_I855 */ 459 return 128 * 1024 * 1024; 460 } 461} 462 463static int 464agp_i810_set_aperture(device_t dev, u_int32_t aperture) 465{ 466 struct agp_i810_softc *sc = device_get_softc(dev); 467 u_int16_t miscc; 468 469 if ( sc->chiptype == CHIP_I810 ) { 470 /* 471 * Double check for sanity. 472 */ 473 if (aperture != 32 * 1024 * 1024 && aperture != 64 * 1024 * 1024) { 474 device_printf(dev, "bad aperture size %d\n", aperture); 475 return EINVAL; 476 } 477 478 miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2); 479 miscc &= ~AGP_I810_MISCC_WINSIZE; 480 if (aperture == 32 * 1024 * 1024) 481 miscc |= AGP_I810_MISCC_WINSIZE_32; 482 else 483 miscc |= AGP_I810_MISCC_WINSIZE_64; 484 485 pci_write_config(sc->bdev, AGP_I810_MISCC, miscc, 2); 486 } else if ( sc->chiptype == CHIP_I830 ) { 487 unsigned int gcc1; 488 489 if (aperture != 64 * 1024 * 1024 && aperture != 128 * 1024 * 1024) { 490 device_printf(dev, "bad aperture size %d\n", aperture); 491 return EINVAL; 492 } 493 gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 2); 494 gcc1 &= ~AGP_I830_GCC1_GMASIZE; 495 if (aperture == 64 * 1024 * 1024) 496 gcc1 |= AGP_I830_GCC1_GMASIZE_64; 497 else 498 gcc1 |= AGP_I830_GCC1_GMASIZE_128; 499 500 pci_write_config(sc->bdev, AGP_I830_GCC1, gcc1, 2); 501 } else { /* CHIP_I855 */ 502 if (aperture != 128 * 1024 * 1024) { 503 device_printf(dev, "bad aperture size %d\n", aperture); 504 return EINVAL; 505 } 506 } 507 508 return 0; 509} 510 511static int 512agp_i810_bind_page(device_t dev, int offset, vm_offset_t physical) 513{ 514 struct agp_i810_softc *sc = device_get_softc(dev); 515 516 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) { 517 device_printf(dev, "failed: offset is 0x%08x, shift is %d, entries is %d\n", offset, AGP_PAGE_SHIFT, sc->gatt->ag_entries); 518 return EINVAL; 519 } 520 521 if ( sc->chiptype != CHIP_I810 ) { 522 if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) { 523 device_printf(dev, "trying to bind into stolen memory"); 524 return EINVAL; 525 } 526 } 527 528 WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, physical | 1); 529 return 0; 530} 531 532static int 533agp_i810_unbind_page(device_t dev, int offset) 534{ 535 struct agp_i810_softc *sc = device_get_softc(dev); 536 537 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 538 return EINVAL; 539 540 if ( sc->chiptype != CHIP_I810 ) { 541 if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) { 542 device_printf(dev, "trying to unbind from stolen memory"); 543 return EINVAL; 544 } 545 } 546 547 WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, 0); 548 return 0; 549} 550 551/* 552 * Writing via memory mapped registers already flushes all TLBs. 553 */ 554static void 555agp_i810_flush_tlb(device_t dev) 556{ 557} 558 559static int 560agp_i810_enable(device_t dev, u_int32_t mode) 561{ 562 563 return 0; 564} 565 566static struct agp_memory * 567agp_i810_alloc_memory(device_t dev, int type, vm_size_t size) 568{ 569 struct agp_i810_softc *sc = device_get_softc(dev); 570 struct agp_memory *mem; 571 572 if ((size & (AGP_PAGE_SIZE - 1)) != 0) 573 return 0; 574 575 if (sc->agp.as_allocated + size > sc->agp.as_maxmem) 576 return 0; 577 578 if (type == 1) { 579 /* 580 * Mapping local DRAM into GATT. 581 */ 582 if ( sc->chiptype != CHIP_I810 ) 583 return 0; 584 if (size != sc->dcache_size) 585 return 0; 586 } else if (type == 2) { 587 /* 588 * Bogus mapping of a single page for the hardware cursor. 589 */ 590 if (size != AGP_PAGE_SIZE) 591 return 0; 592 } 593 594 mem = malloc(sizeof *mem, M_AGP, M_WAITOK); 595 mem->am_id = sc->agp.as_nextid++; 596 mem->am_size = size; 597 mem->am_type = type; 598 if (type != 1) 599 mem->am_obj = vm_object_allocate(OBJT_DEFAULT, 600 atop(round_page(size))); 601 else 602 mem->am_obj = 0; 603 604 if (type == 2) { 605 /* 606 * Allocate and wire down the page now so that we can 607 * get its physical address. 608 */ 609 vm_page_t m; 610 611 VM_OBJECT_LOCK(mem->am_obj); 612 m = vm_page_grab(mem->am_obj, 0, 613 VM_ALLOC_WIRED | VM_ALLOC_ZERO | VM_ALLOC_RETRY); 614 VM_OBJECT_UNLOCK(mem->am_obj); 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 631static int 632agp_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 661static int 662agp_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 682static int 683agp_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 700static int 701agp_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 712static 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 744static driver_t agp_i810_driver = { 745 "agp", 746 agp_i810_methods, 747 sizeof(struct agp_i810_softc), 748}; 749 750static devclass_t agp_devclass; 751 752DRIVER_MODULE(agp_i810, pci, agp_i810_driver, agp_devclass, 0, 0); 753MODULE_DEPEND(agp_i810, agp, 1, 1, 1); 754MODULE_DEPEND(agp_i810, pci, 1, 1, 1); 755