agp_i810.c revision 153031
1183863Snwhitehorn/*- 2183863Snwhitehorn * Copyright (c) 2000 Doug Rabson 3183863Snwhitehorn * Copyright (c) 2000 Ruslan Ermilov 4183863Snwhitehorn * All rights reserved. 5183863Snwhitehorn * 6183863Snwhitehorn * Redistribution and use in source and binary forms, with or without 7183863Snwhitehorn * modification, are permitted provided that the following conditions 8183863Snwhitehorn * are met: 9183863Snwhitehorn * 1. Redistributions of source code must retain the above copyright 10183863Snwhitehorn * notice, this list of conditions and the following disclaimer. 11183863Snwhitehorn * 2. Redistributions in binary form must reproduce the above copyright 12183863Snwhitehorn * notice, this list of conditions and the following disclaimer in the 13183863Snwhitehorn * documentation and/or other materials provided with the distribution. 14183863Snwhitehorn * 15183863Snwhitehorn * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16183863Snwhitehorn * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17183863Snwhitehorn * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18183863Snwhitehorn * 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 153031 2005-12-02 23:51:36Z anholt $"); 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#define WRITEGTT(off,v) bus_space_write_4(sc->gtt_bst, sc->gtt_bsh, off, v) 69 70#define CHIP_I810 0 /* i810/i815 */ 71#define CHIP_I830 1 /* 830M/845G */ 72#define CHIP_I855 2 /* 852GM/855GM/865G */ 73#define CHIP_I915 3 /* 915G/915GM */ 74 75struct agp_i810_softc { 76 struct agp_softc agp; 77 u_int32_t initial_aperture; /* aperture size at startup */ 78 struct agp_gatt *gatt; 79 int chiptype; /* i810-like or i830 */ 80 u_int32_t dcache_size; /* i810 only */ 81 u_int32_t stolen; /* number of i830/845 gtt entries for stolen memory */ 82 device_t bdev; /* bridge device */ 83 84 struct resource *regs; /* memory mapped GC registers */ 85 bus_space_tag_t bst; /* bus_space tag */ 86 bus_space_handle_t bsh; /* bus_space handle */ 87 88 struct resource *gtt; /* memory mapped GATT entries */ 89 bus_space_tag_t gtt_bst; /* bus_space tag */ 90 bus_space_handle_t gtt_bsh; /* bus_space handle */ 91}; 92 93static const char* 94agp_i810_match(device_t dev) 95{ 96 if (pci_get_class(dev) != PCIC_DISPLAY 97 || pci_get_subclass(dev) != PCIS_DISPLAY_VGA) 98 return NULL; 99 100 switch (pci_get_devid(dev)) { 101 case 0x71218086: 102 return ("Intel 82810 (i810 GMCH) SVGA controller"); 103 104 case 0x71238086: 105 return ("Intel 82810-DC100 (i810-DC100 GMCH) SVGA controller"); 106 107 case 0x71258086: 108 return ("Intel 82810E (i810E GMCH) SVGA controller"); 109 110 case 0x11328086: 111 return ("Intel 82815 (i815 GMCH) SVGA controller"); 112 113 case 0x35778086: 114 return ("Intel 82830M (830M GMCH) SVGA controller"); 115 116 case 0x25628086: 117 return ("Intel 82845G (845G GMCH) SVGA controller"); 118 119 case 0x35828086: 120 switch (pci_read_config(dev, AGP_I85X_CAPID, 1)) { 121 case AGP_I855_GME: 122 return ("Intel 82855GME (855GME GMCH) SVGA controller"); 123 124 case AGP_I855_GM: 125 return ("Intel 82855GM (855GM GMCH) SVGA controller"); 126 127 case AGP_I852_GME: 128 return ("Intel 82852GME (852GME GMCH) SVGA controller"); 129 130 case AGP_I852_GM: 131 return ("Intel 82852GM (852GM GMCH) SVGA controller"); 132 133 default: 134 return ("Intel 8285xM (85xGM GMCH) SVGA controller"); 135 } 136 137 case 0x25728086: 138 return ("Intel 82865G (865G GMCH) SVGA controller"); 139 140 case 0x25828086: 141 return ("Intel 82915G (915G GMCH) SVGA controller"); 142 143 case 0x25928086: 144 return ("Intel 82915GM (915GM GMCH) SVGA controller"); 145 }; 146 147 return NULL; 148} 149 150/* 151 * Find bridge device. 152 */ 153static device_t 154agp_i810_find_bridge(device_t dev) 155{ 156 device_t *children, child; 157 int nchildren, i; 158 u_int32_t devid; 159 160 /* 161 * Calculate bridge device's ID. 162 */ 163 devid = pci_get_devid(dev); 164 switch (devid) { 165 case 0x71218086: 166 case 0x71238086: 167 case 0x71258086: 168 devid -= 0x10000; 169 break; 170 171 case 0x11328086: 172 case 0x35778086: 173 case 0x25628086: 174 case 0x35828086: 175 case 0x25728086: 176 case 0x25828086: 177 case 0x25928086: 178 devid -= 0x20000; 179 break; 180 }; 181 if (device_get_children(device_get_parent(dev), &children, &nchildren)) 182 return 0; 183 184 for (i = 0; i < nchildren; i++) { 185 child = children[i]; 186 187 if (pci_get_devid(child) == devid) { 188 free(children, M_TEMP); 189 return child; 190 } 191 } 192 free(children, M_TEMP); 193 return 0; 194} 195 196static int 197agp_i810_probe(device_t dev) 198{ 199 const char *desc; 200 201 if (resource_disabled("agp", device_get_unit(dev))) 202 return (ENXIO); 203 desc = agp_i810_match(dev); 204 if (desc) { 205 device_t bdev; 206 u_int8_t smram; 207 unsigned int gcc1; 208 int devid = pci_get_devid(dev); 209 210 bdev = agp_i810_find_bridge(dev); 211 if (!bdev) { 212 if (bootverbose) 213 printf("I810: can't find bridge device\n"); 214 return ENXIO; 215 } 216 217 /* 218 * checking whether internal graphics device has been activated. 219 */ 220 switch (devid) { 221 /* i810 */ 222 case 0x71218086: 223 case 0x71238086: 224 case 0x71258086: 225 case 0x11328086: 226 smram = pci_read_config(bdev, AGP_I810_SMRAM, 1); 227 if ((smram & AGP_I810_SMRAM_GMS) 228 == AGP_I810_SMRAM_GMS_DISABLED) { 229 if (bootverbose) 230 printf("I810: disabled, not probing\n"); 231 return ENXIO; 232 } 233 break; 234 235 /* i830 */ 236 case 0x35778086: 237 case 0x35828086: 238 case 0x25628086: 239 case 0x25728086: 240 gcc1 = pci_read_config(bdev, AGP_I830_GCC1, 1); 241 if ((gcc1 & AGP_I830_GCC1_DEV2) == AGP_I830_GCC1_DEV2_DISABLED) { 242 if (bootverbose) 243 printf("I830: disabled, not probing\n"); 244 return ENXIO; 245 } 246 break; 247 248 /* i915 */ 249 case 0x25828086: 250 case 0x25928086: 251 gcc1 = pci_read_config(bdev, AGP_I915_DEVEN, 4); 252 if ((gcc1 & AGP_I915_DEVEN_D2F0) == 253 AGP_I915_DEVEN_D2F0_DISABLED) { 254 if (bootverbose) 255 printf("I915: disabled, not probing\n"); 256 return ENXIO; 257 } 258 break; 259 260 default: 261 return ENXIO; 262 } 263 264 device_verbose(dev); 265 device_set_desc(dev, desc); 266 return BUS_PROBE_DEFAULT; 267 } 268 269 return ENXIO; 270} 271 272static int 273agp_i810_attach(device_t dev) 274{ 275 struct agp_i810_softc *sc = device_get_softc(dev); 276 struct agp_gatt *gatt; 277 int error, rid; 278 279 sc->bdev = agp_i810_find_bridge(dev); 280 if (!sc->bdev) 281 return ENOENT; 282 283 error = agp_generic_attach(dev); 284 if (error) 285 return error; 286 287 switch (pci_get_devid(dev)) { 288 case 0x71218086: 289 case 0x71238086: 290 case 0x71258086: 291 case 0x11328086: 292 sc->chiptype = CHIP_I810; 293 break; 294 case 0x35778086: 295 case 0x25628086: 296 sc->chiptype = CHIP_I830; 297 break; 298 case 0x35828086: 299 case 0x25728086: 300 sc->chiptype = CHIP_I855; 301 break; 302 case 0x25828086: 303 case 0x25928086: 304 sc->chiptype = CHIP_I915; 305 break; 306 }; 307 308 /* Same for i810 and i830 */ 309 if (sc->chiptype == CHIP_I915) 310 rid = AGP_I915_MMADR; 311 else 312 rid = AGP_I810_MMADR; 313 314 sc->regs = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 315 RF_ACTIVE); 316 if (!sc->regs) { 317 agp_generic_detach(dev); 318 return ENODEV; 319 } 320 sc->bst = rman_get_bustag(sc->regs); 321 sc->bsh = rman_get_bushandle(sc->regs); 322 323 if (sc->chiptype == CHIP_I915) { 324 rid = AGP_I915_GTTADR; 325 sc->gtt = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 326 RF_ACTIVE); 327 if (!sc->gtt) { 328 bus_release_resource(dev, SYS_RES_MEMORY, 329 AGP_I810_MMADR, sc->regs); 330 agp_generic_detach(dev); 331 return ENODEV; 332 } 333 sc->gtt_bst = rman_get_bustag(sc->gtt); 334 sc->gtt_bsh = rman_get_bushandle(sc->gtt); 335 } 336 337 sc->initial_aperture = AGP_GET_APERTURE(dev); 338 339 gatt = malloc( sizeof(struct agp_gatt), M_AGP, M_NOWAIT); 340 if (!gatt) { 341 agp_generic_detach(dev); 342 return ENOMEM; 343 } 344 sc->gatt = gatt; 345 346 gatt->ag_entries = AGP_GET_APERTURE(dev) >> AGP_PAGE_SHIFT; 347 348 if ( sc->chiptype == CHIP_I810 ) { 349 /* Some i810s have on-chip memory called dcache */ 350 if (READ1(AGP_I810_DRT) & AGP_I810_DRT_POPULATED) 351 sc->dcache_size = 4 * 1024 * 1024; 352 else 353 sc->dcache_size = 0; 354 355 /* According to the specs the gatt on the i810 must be 64k */ 356 gatt->ag_virtual = contigmalloc( 64 * 1024, M_AGP, 0, 357 0, ~0, PAGE_SIZE, 0); 358 if (!gatt->ag_virtual) { 359 if (bootverbose) 360 device_printf(dev, "contiguous allocation failed\n"); 361 free(gatt, M_AGP); 362 agp_generic_detach(dev); 363 return ENOMEM; 364 } 365 bzero(gatt->ag_virtual, gatt->ag_entries * sizeof(u_int32_t)); 366 367 gatt->ag_physical = vtophys((vm_offset_t) gatt->ag_virtual); 368 agp_flush_cache(); 369 /* Install the GATT. */ 370 WRITE4(AGP_I810_PGTBL_CTL, gatt->ag_physical | 1); 371 } else if ( sc->chiptype == CHIP_I830 ) { 372 /* The i830 automatically initializes the 128k gatt on boot. */ 373 unsigned int gcc1, pgtblctl; 374 375 gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 1); 376 switch (gcc1 & AGP_I830_GCC1_GMS) { 377 case AGP_I830_GCC1_GMS_STOLEN_512: 378 sc->stolen = (512 - 132) * 1024 / 4096; 379 break; 380 case AGP_I830_GCC1_GMS_STOLEN_1024: 381 sc->stolen = (1024 - 132) * 1024 / 4096; 382 break; 383 case AGP_I830_GCC1_GMS_STOLEN_8192: 384 sc->stolen = (8192 - 132) * 1024 / 4096; 385 break; 386 default: 387 sc->stolen = 0; 388 device_printf(dev, "unknown memory configuration, disabling\n"); 389 agp_generic_detach(dev); 390 return EINVAL; 391 } 392 if (sc->stolen > 0) 393 device_printf(dev, "detected %dk stolen memory\n", sc->stolen * 4); 394 device_printf(dev, "aperture size is %dM\n", sc->initial_aperture / 1024 / 1024); 395 396 /* GATT address is already in there, make sure it's enabled */ 397 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 398 pgtblctl |= 1; 399 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 400 401 gatt->ag_physical = pgtblctl & ~1; 402 } else if (sc->chiptype == CHIP_I855 || sc->chiptype == CHIP_I915) { /* CHIP_I855 */ 403 unsigned int gcc1, pgtblctl, stolen; 404 405 /* Stolen memory is set up at the beginning of the aperture by 406 * the BIOS, consisting of the GATT followed by 4kb for the BIOS 407 * display. 408 */ 409 if (sc->chiptype == CHIP_I855) 410 stolen = 132; 411 else 412 stolen = 260; 413 414 gcc1 = pci_read_config(sc->bdev, AGP_I855_GCC1, 1); 415 switch (gcc1 & AGP_I855_GCC1_GMS) { 416 case AGP_I855_GCC1_GMS_STOLEN_1M: 417 sc->stolen = (1024 - stolen) * 1024 / 4096; 418 break; 419 case AGP_I855_GCC1_GMS_STOLEN_4M: 420 sc->stolen = (4096 - stolen) * 1024 / 4096; 421 break; 422 case AGP_I855_GCC1_GMS_STOLEN_8M: 423 sc->stolen = (8192 - stolen) * 1024 / 4096; 424 break; 425 case AGP_I855_GCC1_GMS_STOLEN_16M: 426 sc->stolen = (16384 - stolen) * 1024 / 4096; 427 break; 428 case AGP_I855_GCC1_GMS_STOLEN_32M: 429 sc->stolen = (32768 - stolen) * 1024 / 4096; 430 break; 431 case AGP_I915_GCC1_GMS_STOLEN_48M: 432 sc->stolen = (49152 - stolen) * 1024 / 4096; 433 break; 434 case AGP_I915_GCC1_GMS_STOLEN_64M: 435 sc->stolen = (65536 - stolen) * 1024 / 4096; 436 break; 437 default: 438 sc->stolen = 0; 439 device_printf(dev, "unknown memory configuration, disabling\n"); 440 agp_generic_detach(dev); 441 return EINVAL; 442 } 443 if (sc->stolen > 0) 444 device_printf(dev, "detected %dk stolen memory\n", sc->stolen * 4); 445 device_printf(dev, "aperture size is %dM\n", sc->initial_aperture / 1024 / 1024); 446 447 /* GATT address is already in there, make sure it's enabled */ 448 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 449 pgtblctl |= 1; 450 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 451 452 gatt->ag_physical = pgtblctl & ~1; 453 } 454 455 /* Add a device for the drm to attach to */ 456 if (!device_add_child( dev, "drmsub", -1 )) 457 printf("out of memory...\n"); 458 459 return bus_generic_attach(dev); 460} 461 462static int 463agp_i810_detach(device_t dev) 464{ 465 struct agp_i810_softc *sc = device_get_softc(dev); 466 int error; 467 device_t child; 468 469 error = agp_generic_detach(dev); 470 if (error) 471 return error; 472 473 /* Clear the GATT base. */ 474 if ( sc->chiptype == CHIP_I810 ) { 475 WRITE4(AGP_I810_PGTBL_CTL, 0); 476 } else { 477 unsigned int pgtblctl; 478 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 479 pgtblctl &= ~1; 480 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 481 } 482 483 /* Put the aperture back the way it started. */ 484 AGP_SET_APERTURE(dev, sc->initial_aperture); 485 486 if ( sc->chiptype == CHIP_I810 ) { 487 contigfree(sc->gatt->ag_virtual, 64 * 1024, M_AGP); 488 } 489 free(sc->gatt, M_AGP); 490 491 if (sc->chiptype == CHIP_I915) { 492 bus_release_resource(dev, SYS_RES_MEMORY, AGP_I915_GTTADR, 493 sc->gtt); 494 bus_release_resource(dev, SYS_RES_MEMORY, AGP_I915_MMADR, 495 sc->regs); 496 } else { 497 bus_release_resource(dev, SYS_RES_MEMORY, AGP_I810_MMADR, 498 sc->regs); 499 } 500 501 child = device_find_child( dev, "drmsub", 0 ); 502 if (child) 503 device_delete_child( dev, child ); 504 505 return 0; 506} 507 508static u_int32_t 509agp_i810_get_aperture(device_t dev) 510{ 511 struct agp_i810_softc *sc = device_get_softc(dev); 512 uint32_t temp; 513 u_int16_t miscc; 514 515 switch (sc->chiptype) { 516 case CHIP_I810: 517 miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2); 518 if ((miscc & AGP_I810_MISCC_WINSIZE) == AGP_I810_MISCC_WINSIZE_32) 519 return 32 * 1024 * 1024; 520 else 521 return 64 * 1024 * 1024; 522 case CHIP_I830: 523 temp = pci_read_config(sc->bdev, AGP_I830_GCC1, 2); 524 if ((temp & AGP_I830_GCC1_GMASIZE) == AGP_I830_GCC1_GMASIZE_64) 525 return 64 * 1024 * 1024; 526 else 527 return 128 * 1024 * 1024; 528 case CHIP_I855: 529 return 128 * 1024 * 1024; 530 case CHIP_I915: 531 temp = pci_read_config(dev, AGP_I915_MSAC, 1); 532 if ((temp & AGP_I915_MSAC_GMASIZE) == 533 AGP_I915_MSAC_GMASIZE_128) { 534 return 128 * 1024 * 1024; 535 } else { 536 return 256 * 1024 * 1024; 537 } 538 } 539 540 return 0; 541} 542 543static int 544agp_i810_set_aperture(device_t dev, u_int32_t aperture) 545{ 546 struct agp_i810_softc *sc = device_get_softc(dev); 547 u_int16_t miscc, gcc1; 548 u_int32_t temp; 549 550 switch (sc->chiptype) { 551 case CHIP_I810: 552 /* 553 * Double check for sanity. 554 */ 555 if (aperture != 32 * 1024 * 1024 && aperture != 64 * 1024 * 1024) { 556 device_printf(dev, "bad aperture size %d\n", aperture); 557 return EINVAL; 558 } 559 560 miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2); 561 miscc &= ~AGP_I810_MISCC_WINSIZE; 562 if (aperture == 32 * 1024 * 1024) 563 miscc |= AGP_I810_MISCC_WINSIZE_32; 564 else 565 miscc |= AGP_I810_MISCC_WINSIZE_64; 566 567 pci_write_config(sc->bdev, AGP_I810_MISCC, miscc, 2); 568 break; 569 case CHIP_I830: 570 if (aperture != 64 * 1024 * 1024 && 571 aperture != 128 * 1024 * 1024) { 572 device_printf(dev, "bad aperture size %d\n", aperture); 573 return EINVAL; 574 } 575 gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 2); 576 gcc1 &= ~AGP_I830_GCC1_GMASIZE; 577 if (aperture == 64 * 1024 * 1024) 578 gcc1 |= AGP_I830_GCC1_GMASIZE_64; 579 else 580 gcc1 |= AGP_I830_GCC1_GMASIZE_128; 581 582 pci_write_config(sc->bdev, AGP_I830_GCC1, gcc1, 2); 583 break; 584 case CHIP_I855: 585 if (aperture != 128 * 1024 * 1024) { 586 device_printf(dev, "bad aperture size %d\n", aperture); 587 return EINVAL; 588 } 589 break; 590 case CHIP_I915: 591 temp = pci_read_config(dev, AGP_I915_MSAC, 1); 592 temp &= ~AGP_I915_MSAC_GMASIZE; 593 594 switch (aperture) { 595 case 128 * 1024 * 1024: 596 temp |= AGP_I915_MSAC_GMASIZE_128; 597 break; 598 case 256 * 1024 * 1024: 599 temp |= AGP_I915_MSAC_GMASIZE_256; 600 break; 601 default: 602 device_printf(dev, "bad aperture size %d\n", aperture); 603 return EINVAL; 604 } 605 606 pci_write_config(dev, AGP_I915_MSAC, temp, 1); 607 break; 608 } 609 610 return 0; 611} 612 613static int 614agp_i810_bind_page(device_t dev, int offset, vm_offset_t physical) 615{ 616 struct agp_i810_softc *sc = device_get_softc(dev); 617 618 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) { 619 device_printf(dev, "failed: offset is 0x%08x, shift is %d, entries is %d\n", offset, AGP_PAGE_SHIFT, sc->gatt->ag_entries); 620 return EINVAL; 621 } 622 623 if ( sc->chiptype != CHIP_I810 ) { 624 if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) { 625 device_printf(dev, "trying to bind into stolen memory"); 626 return EINVAL; 627 } 628 } 629 630 if (sc->chiptype == CHIP_I915) { 631 WRITEGTT((offset >> AGP_PAGE_SHIFT) * 4, physical | 1); 632 } else { 633 WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, physical | 1); 634 } 635 636 return 0; 637} 638 639static int 640agp_i810_unbind_page(device_t dev, int offset) 641{ 642 struct agp_i810_softc *sc = device_get_softc(dev); 643 644 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 645 return EINVAL; 646 647 if ( sc->chiptype != CHIP_I810 ) { 648 if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) { 649 device_printf(dev, "trying to unbind from stolen memory"); 650 return EINVAL; 651 } 652 } 653 654 if (sc->chiptype == CHIP_I915) { 655 WRITEGTT((offset >> AGP_PAGE_SHIFT) * 4, 0); 656 } else { 657 WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, 0); 658 } 659 660 return 0; 661} 662 663/* 664 * Writing via memory mapped registers already flushes all TLBs. 665 */ 666static void 667agp_i810_flush_tlb(device_t dev) 668{ 669} 670 671static int 672agp_i810_enable(device_t dev, u_int32_t mode) 673{ 674 675 return 0; 676} 677 678static struct agp_memory * 679agp_i810_alloc_memory(device_t dev, int type, vm_size_t size) 680{ 681 struct agp_i810_softc *sc = device_get_softc(dev); 682 struct agp_memory *mem; 683 684 if ((size & (AGP_PAGE_SIZE - 1)) != 0) 685 return 0; 686 687 if (sc->agp.as_allocated + size > sc->agp.as_maxmem) 688 return 0; 689 690 if (type == 1) { 691 /* 692 * Mapping local DRAM into GATT. 693 */ 694 if ( sc->chiptype != CHIP_I810 ) 695 return 0; 696 if (size != sc->dcache_size) 697 return 0; 698 } else if (type == 2) { 699 /* 700 * Bogus mapping of a single page for the hardware cursor. 701 */ 702 if (size != AGP_PAGE_SIZE) 703 return 0; 704 } 705 706 mem = malloc(sizeof *mem, M_AGP, M_WAITOK); 707 mem->am_id = sc->agp.as_nextid++; 708 mem->am_size = size; 709 mem->am_type = type; 710 if (type != 1) 711 mem->am_obj = vm_object_allocate(OBJT_DEFAULT, 712 atop(round_page(size))); 713 else 714 mem->am_obj = 0; 715 716 if (type == 2) { 717 /* 718 * Allocate and wire down the page now so that we can 719 * get its physical address. 720 */ 721 vm_page_t m; 722 723 VM_OBJECT_LOCK(mem->am_obj); 724 m = vm_page_grab(mem->am_obj, 0, VM_ALLOC_NOBUSY | 725 VM_ALLOC_WIRED | VM_ALLOC_ZERO | VM_ALLOC_RETRY); 726 VM_OBJECT_UNLOCK(mem->am_obj); 727 mem->am_physical = VM_PAGE_TO_PHYS(m); 728 } else { 729 mem->am_physical = 0; 730 } 731 732 mem->am_offset = 0; 733 mem->am_is_bound = 0; 734 TAILQ_INSERT_TAIL(&sc->agp.as_memory, mem, am_link); 735 sc->agp.as_allocated += size; 736 737 return mem; 738} 739 740static int 741agp_i810_free_memory(device_t dev, struct agp_memory *mem) 742{ 743 struct agp_i810_softc *sc = device_get_softc(dev); 744 745 if (mem->am_is_bound) 746 return EBUSY; 747 748 if (mem->am_type == 2) { 749 /* 750 * Unwire the page which we wired in alloc_memory. 751 */ 752 vm_page_t m; 753 754 VM_OBJECT_LOCK(mem->am_obj); 755 m = vm_page_lookup(mem->am_obj, 0); 756 VM_OBJECT_UNLOCK(mem->am_obj); 757 vm_page_lock_queues(); 758 vm_page_unwire(m, 0); 759 vm_page_unlock_queues(); 760 } 761 762 sc->agp.as_allocated -= mem->am_size; 763 TAILQ_REMOVE(&sc->agp.as_memory, mem, am_link); 764 if (mem->am_obj) 765 vm_object_deallocate(mem->am_obj); 766 free(mem, M_AGP); 767 return 0; 768} 769 770static int 771agp_i810_bind_memory(device_t dev, struct agp_memory *mem, 772 vm_offset_t offset) 773{ 774 struct agp_i810_softc *sc = device_get_softc(dev); 775 vm_offset_t i; 776 777 if (mem->am_type != 1) 778 return agp_generic_bind_memory(dev, mem, offset); 779 780 if ( sc->chiptype != CHIP_I810 ) 781 return EINVAL; 782 783 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) { 784 WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, 785 i | 3); 786 } 787 788 return 0; 789} 790 791static int 792agp_i810_unbind_memory(device_t dev, struct agp_memory *mem) 793{ 794 struct agp_i810_softc *sc = device_get_softc(dev); 795 vm_offset_t i; 796 797 if (mem->am_type != 1) 798 return agp_generic_unbind_memory(dev, mem); 799 800 if ( sc->chiptype != CHIP_I810 ) 801 return EINVAL; 802 803 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) 804 WRITE4(AGP_I810_GTT + (i >> AGP_PAGE_SHIFT) * 4, 0); 805 806 return 0; 807} 808 809static int 810agp_i810_print_child(device_t dev, device_t child) 811{ 812 int retval = 0; 813 814 retval += bus_print_child_header(dev, child); 815 retval += printf(": (child of agp_i810.c)"); 816 retval += bus_print_child_footer(dev, child); 817 818 return retval; 819} 820 821static device_method_t agp_i810_methods[] = { 822 /* Device interface */ 823 DEVMETHOD(device_probe, agp_i810_probe), 824 DEVMETHOD(device_attach, agp_i810_attach), 825 DEVMETHOD(device_detach, agp_i810_detach), 826 DEVMETHOD(device_shutdown, bus_generic_shutdown), 827 DEVMETHOD(device_suspend, bus_generic_suspend), 828 DEVMETHOD(device_resume, bus_generic_resume), 829 830 /* AGP interface */ 831 DEVMETHOD(agp_get_aperture, agp_i810_get_aperture), 832 DEVMETHOD(agp_set_aperture, agp_i810_set_aperture), 833 DEVMETHOD(agp_bind_page, agp_i810_bind_page), 834 DEVMETHOD(agp_unbind_page, agp_i810_unbind_page), 835 DEVMETHOD(agp_flush_tlb, agp_i810_flush_tlb), 836 DEVMETHOD(agp_enable, agp_i810_enable), 837 DEVMETHOD(agp_alloc_memory, agp_i810_alloc_memory), 838 DEVMETHOD(agp_free_memory, agp_i810_free_memory), 839 DEVMETHOD(agp_bind_memory, agp_i810_bind_memory), 840 DEVMETHOD(agp_unbind_memory, agp_i810_unbind_memory), 841 842 /* bus methods */ 843 DEVMETHOD(bus_print_child, agp_i810_print_child), 844 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), 845 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 846 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 847 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 848 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 849 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 850 { 0, 0 } 851}; 852 853static driver_t agp_i810_driver = { 854 "agp", 855 agp_i810_methods, 856 sizeof(struct agp_i810_softc), 857}; 858 859static devclass_t agp_devclass; 860 861DRIVER_MODULE(agp_i810, pci, agp_i810_driver, agp_devclass, 0, 0); 862MODULE_DEPEND(agp_i810, agp, 1, 1, 1); 863MODULE_DEPEND(agp_i810, pci, 1, 1, 1); 864