agp_i810.c revision 1.40
1 /* $NetBSD: agp_i810.c,v 1.40 2007/03/24 23:02:24 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 Doug Rabson 5 * Copyright (c) 2000 Ruslan Ermilov 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/sys/pci/agp_i810.c,v 1.4 2001/07/05 21:28:47 jhb Exp $ 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: agp_i810.c,v 1.40 2007/03/24 23:02:24 christos Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/malloc.h> 38 #include <sys/kernel.h> 39 #include <sys/lock.h> 40 #include <sys/proc.h> 41 #include <sys/device.h> 42 #include <sys/conf.h> 43 44 #include <uvm/uvm_extern.h> 45 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pcireg.h> 48 #include <dev/pci/pcidevs.h> 49 #include <dev/pci/agpvar.h> 50 #include <dev/pci/agpreg.h> 51 52 #include <sys/agpio.h> 53 54 #include <machine/bus.h> 55 56 #include "agp_intel.h" 57 58 #define READ1(off) bus_space_read_1(isc->bst, isc->bsh, off) 59 #define READ4(off) bus_space_read_4(isc->bst, isc->bsh, off) 60 #define WRITE4(off,v) bus_space_write_4(isc->bst, isc->bsh, off, v) 61 #define WRITEGTT(off, v) \ 62 do { \ 63 if (isc->chiptype == CHIP_I915) { \ 64 bus_space_write_4(isc->gtt_bst, isc->gtt_bsh, \ 65 (u_int32_t)((off) >> AGP_PAGE_SHIFT) * 4, \ 66 (v)); \ 67 } else { \ 68 WRITE4(AGP_I810_GTT + \ 69 (u_int32_t)((off) >> AGP_PAGE_SHIFT) * 4, \ 70 (v)); \ 71 } \ 72 } while (0) 73 74 #define CHIP_I810 0 /* i810/i815 */ 75 #define CHIP_I830 1 /* 830M/845G */ 76 #define CHIP_I855 2 /* 852GM/855GM/865G */ 77 #define CHIP_I915 3 /* 915G/915GM/945G/945GM */ 78 79 struct agp_i810_softc { 80 u_int32_t initial_aperture; /* aperture size at startup */ 81 struct agp_gatt *gatt; 82 int chiptype; /* i810-like or i830 */ 83 u_int32_t dcache_size; /* i810 only */ 84 u_int32_t stolen; /* number of i830/845 gtt entries 85 for stolen memory */ 86 bus_space_tag_t bst; /* register bus_space tag */ 87 bus_space_handle_t bsh; /* register bus_space handle */ 88 bus_space_tag_t gtt_bst; /* GTT bus_space tag */ 89 bus_space_handle_t gtt_bsh; /* GTT bus_space handle */ 90 struct pci_attach_args vga_pa; 91 92 void *sc_powerhook; 93 struct pci_conf_state sc_pciconf; 94 }; 95 96 static u_int32_t agp_i810_get_aperture(struct agp_softc *); 97 static int agp_i810_set_aperture(struct agp_softc *, u_int32_t); 98 static int agp_i810_bind_page(struct agp_softc *, off_t, bus_addr_t); 99 static int agp_i810_unbind_page(struct agp_softc *, off_t); 100 static void agp_i810_flush_tlb(struct agp_softc *); 101 static int agp_i810_enable(struct agp_softc *, u_int32_t mode); 102 static struct agp_memory *agp_i810_alloc_memory(struct agp_softc *, int, 103 vsize_t); 104 static int agp_i810_free_memory(struct agp_softc *, struct agp_memory *); 105 static int agp_i810_bind_memory(struct agp_softc *, struct agp_memory *, off_t); 106 static int agp_i810_unbind_memory(struct agp_softc *, struct agp_memory *); 107 static void agp_i810_powerhook(int, void *); 108 109 static struct agp_methods agp_i810_methods = { 110 agp_i810_get_aperture, 111 agp_i810_set_aperture, 112 agp_i810_bind_page, 113 agp_i810_unbind_page, 114 agp_i810_flush_tlb, 115 agp_i810_enable, 116 agp_i810_alloc_memory, 117 agp_i810_free_memory, 118 agp_i810_bind_memory, 119 agp_i810_unbind_memory, 120 }; 121 122 /* XXXthorpej -- duplicated code (see arch/i386/pci/pchb.c) */ 123 static int 124 agp_i810_vgamatch(struct pci_attach_args *pa) 125 { 126 127 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY || 128 PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_DISPLAY_VGA) 129 return (0); 130 131 switch (PCI_PRODUCT(pa->pa_id)) { 132 case PCI_PRODUCT_INTEL_82810_GC: 133 case PCI_PRODUCT_INTEL_82810_DC100_GC: 134 case PCI_PRODUCT_INTEL_82810E_GC: 135 case PCI_PRODUCT_INTEL_82815_FULL_GRAPH: 136 case PCI_PRODUCT_INTEL_82830MP_IV: 137 case PCI_PRODUCT_INTEL_82845G_IGD: 138 case PCI_PRODUCT_INTEL_82855GM_IGD: 139 case PCI_PRODUCT_INTEL_82865_IGD: 140 case PCI_PRODUCT_INTEL_82915G_IGD: 141 case PCI_PRODUCT_INTEL_82915GM_IGD: 142 case PCI_PRODUCT_INTEL_82945P_IGD: 143 case PCI_PRODUCT_INTEL_82945GM_IGD: 144 case PCI_PRODUCT_INTEL_82945GM_IGD_1: 145 return (1); 146 } 147 148 return (0); 149 } 150 151 int 152 agp_i810_attach(struct device *parent, struct device *self, void *aux) 153 { 154 struct agp_softc *sc = (void *)self; 155 struct agp_i810_softc *isc; 156 struct agp_gatt *gatt; 157 int error, apbase; 158 bus_size_t mmadrsize; 159 160 isc = malloc(sizeof *isc, M_AGP, M_NOWAIT|M_ZERO); 161 if (isc == NULL) { 162 aprint_error(": can't allocate chipset-specific softc\n"); 163 return ENOMEM; 164 } 165 sc->as_chipc = isc; 166 sc->as_methods = &agp_i810_methods; 167 168 if (pci_find_device(&isc->vga_pa, agp_i810_vgamatch) == 0) { 169 #if NAGP_INTEL > 0 170 const struct pci_attach_args *pa = aux; 171 172 switch (PCI_PRODUCT(pa->pa_id)) { 173 case PCI_PRODUCT_INTEL_82840_HB: 174 case PCI_PRODUCT_INTEL_82865_HB: 175 case PCI_PRODUCT_INTEL_82845G_DRAM: 176 case PCI_PRODUCT_INTEL_82815_FULL_HUB: 177 return agp_intel_attach(parent, self, aux); 178 } 179 #endif 180 aprint_error(": can't find internal VGA device config space\n"); 181 free(isc, M_AGP); 182 return ENOENT; 183 } 184 185 /* XXXfvdl */ 186 sc->as_dmat = isc->vga_pa.pa_dmat; 187 188 switch (PCI_PRODUCT(isc->vga_pa.pa_id)) { 189 case PCI_PRODUCT_INTEL_82810_GC: 190 case PCI_PRODUCT_INTEL_82810_DC100_GC: 191 case PCI_PRODUCT_INTEL_82810E_GC: 192 case PCI_PRODUCT_INTEL_82815_FULL_GRAPH: 193 isc->chiptype = CHIP_I810; 194 break; 195 case PCI_PRODUCT_INTEL_82830MP_IV: 196 case PCI_PRODUCT_INTEL_82845G_IGD: 197 isc->chiptype = CHIP_I830; 198 break; 199 case PCI_PRODUCT_INTEL_82855GM_IGD: 200 case PCI_PRODUCT_INTEL_82865_IGD: 201 isc->chiptype = CHIP_I855; 202 break; 203 case PCI_PRODUCT_INTEL_82915G_IGD: 204 case PCI_PRODUCT_INTEL_82915GM_IGD: 205 case PCI_PRODUCT_INTEL_82945P_IGD: 206 case PCI_PRODUCT_INTEL_82945GM_IGD: 207 case PCI_PRODUCT_INTEL_82945GM_IGD_1: 208 isc->chiptype = CHIP_I915; 209 break; 210 } 211 212 apbase = isc->chiptype == CHIP_I915 ? AGP_I915_GMADR : AGP_I810_GMADR; 213 error = agp_map_aperture(&isc->vga_pa, sc, apbase); 214 if (error != 0) { 215 aprint_error(": can't map aperture\n"); 216 free(isc, M_AGP); 217 return error; 218 } 219 220 if (isc->chiptype == CHIP_I915) { 221 error = pci_mapreg_map(&isc->vga_pa, AGP_I915_MMADR, 222 PCI_MAPREG_TYPE_MEM, 0, &isc->bst, &isc->bsh, 223 NULL, &mmadrsize); 224 if (error != 0) { 225 aprint_error(": can't map mmadr registers\n"); 226 agp_generic_detach(sc); 227 return error; 228 } 229 error = pci_mapreg_map(&isc->vga_pa, AGP_I915_GTTADR, 230 PCI_MAPREG_TYPE_MEM, 0, &isc->gtt_bst, &isc->gtt_bsh, 231 NULL, NULL); 232 if (error != 0) { 233 aprint_error(": can't map gttadr registers\n"); 234 /* XXX we should release mmadr here */ 235 agp_generic_detach(sc); 236 return error; 237 } 238 } else { 239 error = pci_mapreg_map(&isc->vga_pa, AGP_I810_MMADR, 240 PCI_MAPREG_TYPE_MEM, 0, &isc->bst, &isc->bsh, 241 NULL, &mmadrsize); 242 if (error != 0) { 243 aprint_error(": can't map mmadr registers\n"); 244 agp_generic_detach(sc); 245 return error; 246 } 247 } 248 249 isc->initial_aperture = AGP_GET_APERTURE(sc); 250 251 gatt = malloc(sizeof(struct agp_gatt), M_AGP, M_NOWAIT); 252 if (!gatt) { 253 agp_generic_detach(sc); 254 return ENOMEM; 255 } 256 isc->gatt = gatt; 257 258 gatt->ag_entries = AGP_GET_APERTURE(sc) >> AGP_PAGE_SHIFT; 259 260 if (isc->chiptype == CHIP_I810) { 261 void *virtual; 262 int dummyseg; 263 264 /* Some i810s have on-chip memory called dcache */ 265 if (READ1(AGP_I810_DRT) & AGP_I810_DRT_POPULATED) 266 isc->dcache_size = 4 * 1024 * 1024; 267 else 268 isc->dcache_size = 0; 269 270 /* According to the specs the gatt on the i810 must be 64k */ 271 if (agp_alloc_dmamem(sc->as_dmat, 64 * 1024, 272 0, &gatt->ag_dmamap, &virtual, &gatt->ag_physical, 273 &gatt->ag_dmaseg, 1, &dummyseg) != 0) { 274 free(gatt, M_AGP); 275 agp_generic_detach(sc); 276 return ENOMEM; 277 } 278 gatt->ag_virtual = (uint32_t *)virtual; 279 280 gatt->ag_size = gatt->ag_entries * sizeof(u_int32_t); 281 memset(gatt->ag_virtual, 0, gatt->ag_size); 282 283 agp_flush_cache(); 284 /* Install the GATT. */ 285 WRITE4(AGP_I810_PGTBL_CTL, gatt->ag_physical | 1); 286 } else if (isc->chiptype == CHIP_I830) { 287 /* The i830 automatically initializes the 128k gatt on boot. */ 288 pcireg_t reg; 289 u_int32_t pgtblctl; 290 u_int16_t gcc1; 291 292 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0); 293 gcc1 = (u_int16_t)(reg >> 16); 294 switch (gcc1 & AGP_I830_GCC1_GMS) { 295 case AGP_I830_GCC1_GMS_STOLEN_512: 296 isc->stolen = (512 - 132) * 1024 / 4096; 297 break; 298 case AGP_I830_GCC1_GMS_STOLEN_1024: 299 isc->stolen = (1024 - 132) * 1024 / 4096; 300 break; 301 case AGP_I830_GCC1_GMS_STOLEN_8192: 302 isc->stolen = (8192 - 132) * 1024 / 4096; 303 break; 304 default: 305 isc->stolen = 0; 306 aprint_error( 307 ": unknown memory configuration, disabling\n"); 308 agp_generic_detach(sc); 309 return EINVAL; 310 } 311 if (isc->stolen > 0) { 312 aprint_error(": detected %dk stolen memory\n%s", 313 isc->stolen * 4, sc->as_dev.dv_xname); 314 } 315 316 /* GATT address is already in there, make sure it's enabled */ 317 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 318 pgtblctl |= 1; 319 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 320 321 gatt->ag_physical = pgtblctl & ~1; 322 } else if (isc->chiptype == CHIP_I855) { 323 /* The 855GM automatically initializes the 128k gatt on boot. */ 324 pcireg_t reg; 325 u_int32_t pgtblctl; 326 u_int16_t gcc1; 327 328 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I855_GCC1); 329 gcc1 = (u_int16_t)(reg >> 16); 330 switch (gcc1 & AGP_I855_GCC1_GMS) { 331 case AGP_I855_GCC1_GMS_STOLEN_1M: 332 isc->stolen = (1024 - 132) * 1024 / 4096; 333 break; 334 case AGP_I855_GCC1_GMS_STOLEN_4M: 335 isc->stolen = (4096 - 132) * 1024 / 4096; 336 break; 337 case AGP_I855_GCC1_GMS_STOLEN_8M: 338 isc->stolen = (8192 - 132) * 1024 / 4096; 339 break; 340 case AGP_I855_GCC1_GMS_STOLEN_16M: 341 isc->stolen = (16384 - 132) * 1024 / 4096; 342 break; 343 case AGP_I855_GCC1_GMS_STOLEN_32M: 344 isc->stolen = (32768 - 132) * 1024 / 4096; 345 break; 346 default: 347 isc->stolen = 0; 348 aprint_error( 349 ": unknown memory configuration, disabling\n"); 350 agp_generic_detach(sc); 351 return EINVAL; 352 } 353 if (isc->stolen > 0) { 354 aprint_error(": detected %dk stolen memory\n%s", 355 isc->stolen * 4, sc->as_dev.dv_xname); 356 } 357 358 /* GATT address is already in there, make sure it's enabled */ 359 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 360 pgtblctl |= 1; 361 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 362 363 gatt->ag_physical = pgtblctl & ~1; 364 } else { /* CHIP_I915 */ 365 /* The 915G automatically initializes the 256k gatt on boot. */ 366 pcireg_t reg; 367 u_int32_t pgtblctl; 368 u_int16_t gcc1; 369 370 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I915_GCC1); 371 gcc1 = (u_int16_t)(reg >> 16); 372 switch (gcc1 & AGP_I915_GCC1_GMS) { 373 case AGP_I915_GCC1_GMS_STOLEN_0M: 374 isc->stolen = 0; 375 break; 376 case AGP_I915_GCC1_GMS_STOLEN_1M: 377 isc->stolen = (1024 - 260) * 1024 / 4096; 378 break; 379 case AGP_I915_GCC1_GMS_STOLEN_8M: 380 isc->stolen = (8192 - 260) * 1024 / 4096; 381 break; 382 default: 383 isc->stolen = 0; 384 aprint_error( 385 ": unknown memory configuration, disabling\n"); 386 agp_generic_detach(sc); 387 return EINVAL; 388 } 389 if (isc->stolen > 0) { 390 aprint_error(": detected %dk stolen memory\n%s", 391 isc->stolen * 4, sc->as_dev.dv_xname); 392 } 393 394 /* GATT address is already in there, make sure it's enabled */ 395 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 396 pgtblctl |= 1; 397 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 398 399 gatt->ag_physical = pgtblctl & ~1; 400 } 401 402 /* 403 * Make sure the chipset can see everything. 404 */ 405 agp_flush_cache(); 406 407 isc->sc_powerhook = powerhook_establish(sc->as_dev.dv_xname, 408 agp_i810_powerhook, sc); 409 if (isc->sc_powerhook == NULL) 410 printf("%s: WARNING: unable to establish PCI power hook\n", 411 sc->as_dev.dv_xname); 412 413 #if 0 414 /* 415 * another device (drm) may need access to this region 416 * we do not need it anymore 417 */ 418 bus_space_unmap(isc->bst, isc->bsh, mmadrsize); 419 #endif 420 421 return 0; 422 } 423 424 #if 0 425 static int 426 agp_i810_detach(struct agp_softc *sc) 427 { 428 int error; 429 struct agp_i810_softc *isc = sc->as_chipc; 430 431 error = agp_generic_detach(sc); 432 if (error) 433 return error; 434 435 /* Clear the GATT base. */ 436 if (sc->chiptype == CHIP_I810) { 437 WRITE4(AGP_I810_PGTBL_CTL, 0); 438 } else { 439 unsigned int pgtblctl; 440 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 441 pgtblctl &= ~1; 442 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 443 } 444 445 /* Put the aperture back the way it started. */ 446 AGP_SET_APERTURE(sc, isc->initial_aperture); 447 448 if (sc->chiptype == CHIP_I810) { 449 agp_free_dmamem(sc->as_dmat, gatt->ag_size, gatt->ag_dmamap, 450 (void *)gatt->ag_virtual, &gatt->ag_dmaseg, 1); 451 } 452 free(sc->gatt, M_AGP); 453 454 return 0; 455 } 456 #endif 457 458 static u_int32_t 459 agp_i810_get_aperture(struct agp_softc *sc) 460 { 461 struct agp_i810_softc *isc = sc->as_chipc; 462 pcireg_t reg; 463 464 if (isc->chiptype == CHIP_I810) { 465 u_int16_t miscc; 466 467 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I810_SMRAM); 468 miscc = (u_int16_t)(reg >> 16); 469 if ((miscc & AGP_I810_MISCC_WINSIZE) == 470 AGP_I810_MISCC_WINSIZE_32) 471 return 32 * 1024 * 1024; 472 else 473 return 64 * 1024 * 1024; 474 } else if (isc->chiptype == CHIP_I830) { 475 u_int16_t gcc1; 476 477 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0); 478 gcc1 = (u_int16_t)(reg >> 16); 479 if ((gcc1 & AGP_I830_GCC1_GMASIZE) == AGP_I830_GCC1_GMASIZE_64) 480 return 64 * 1024 * 1024; 481 else 482 return 128 * 1024 * 1024; 483 } else if (isc->chiptype == CHIP_I855) { 484 return 128 * 1024 * 1024; 485 } else { /* CHIP_I915 */ 486 u_int16_t msac; 487 488 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I915_MSAC); 489 msac = (u_int16_t)(reg >> 16); 490 if (msac & AGP_I915_MSAC_APER_128M) 491 return 128 * 1024 * 1024; 492 else 493 return 256 * 1024 * 1024; 494 } 495 } 496 497 static int 498 agp_i810_set_aperture(struct agp_softc *sc, u_int32_t aperture) 499 { 500 struct agp_i810_softc *isc = sc->as_chipc; 501 pcireg_t reg; 502 503 if (isc->chiptype == CHIP_I810) { 504 u_int16_t miscc; 505 506 /* 507 * Double check for sanity. 508 */ 509 if (aperture != (32 * 1024 * 1024) && 510 aperture != (64 * 1024 * 1024)) { 511 printf("%s: bad aperture size %d\n", 512 sc->as_dev.dv_xname, aperture); 513 return EINVAL; 514 } 515 516 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I810_SMRAM); 517 miscc = (u_int16_t)(reg >> 16); 518 miscc &= ~AGP_I810_MISCC_WINSIZE; 519 if (aperture == 32 * 1024 * 1024) 520 miscc |= AGP_I810_MISCC_WINSIZE_32; 521 else 522 miscc |= AGP_I810_MISCC_WINSIZE_64; 523 524 reg &= 0x0000ffff; 525 reg |= ((pcireg_t)miscc) << 16; 526 pci_conf_write(sc->as_pc, sc->as_tag, AGP_I810_SMRAM, reg); 527 } else if (isc->chiptype == CHIP_I830) { 528 u_int16_t gcc1; 529 530 if (aperture != (64 * 1024 * 1024) && 531 aperture != (128 * 1024 * 1024)) { 532 printf("%s: bad aperture size %d\n", 533 sc->as_dev.dv_xname, aperture); 534 return EINVAL; 535 } 536 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0); 537 gcc1 = (u_int16_t)(reg >> 16); 538 gcc1 &= ~AGP_I830_GCC1_GMASIZE; 539 if (aperture == 64 * 1024 * 1024) 540 gcc1 |= AGP_I830_GCC1_GMASIZE_64; 541 else 542 gcc1 |= AGP_I830_GCC1_GMASIZE_128; 543 544 reg &= 0x0000ffff; 545 reg |= ((pcireg_t)gcc1) << 16; 546 pci_conf_write(sc->as_pc, sc->as_tag, AGP_I830_GCC0, reg); 547 } else { /* CHIP_I855 or CHIP_I915 */ 548 if (aperture != agp_i810_get_aperture(sc)) { 549 printf("%s: bad aperture size %d\n", 550 sc->as_dev.dv_xname, aperture); 551 return EINVAL; 552 } 553 } 554 555 return 0; 556 } 557 558 static int 559 agp_i810_bind_page(struct agp_softc *sc, off_t offset, bus_addr_t physical) 560 { 561 struct agp_i810_softc *isc = sc->as_chipc; 562 563 if (offset < 0 || offset >= (isc->gatt->ag_entries << AGP_PAGE_SHIFT)) { 564 #ifdef AGP_DEBUG 565 printf("%s: failed: offset 0x%08x, shift %d, entries %d\n", 566 sc->as_dev.dv_xname, (int)offset, AGP_PAGE_SHIFT, 567 isc->gatt->ag_entries); 568 #endif 569 return EINVAL; 570 } 571 572 if (isc->chiptype != CHIP_I830) { 573 if ((offset >> AGP_PAGE_SHIFT) < isc->stolen) { 574 #ifdef AGP_DEBUG 575 printf("%s: trying to bind into stolen memory", 576 sc->as_dev.dv_xname); 577 #endif 578 return EINVAL; 579 } 580 } 581 582 WRITEGTT(offset, physical | 1); 583 return 0; 584 } 585 586 static int 587 agp_i810_unbind_page(struct agp_softc *sc, off_t offset) 588 { 589 struct agp_i810_softc *isc = sc->as_chipc; 590 591 if (offset < 0 || offset >= (isc->gatt->ag_entries << AGP_PAGE_SHIFT)) 592 return EINVAL; 593 594 if (isc->chiptype != CHIP_I810 ) { 595 if ((offset >> AGP_PAGE_SHIFT) < isc->stolen) { 596 #ifdef AGP_DEBUG 597 printf("%s: trying to unbind from stolen memory", 598 sc->as_dev.dv_xname); 599 #endif 600 return EINVAL; 601 } 602 } 603 604 WRITEGTT(offset, 0); 605 return 0; 606 } 607 608 /* 609 * Writing via memory mapped registers already flushes all TLBs. 610 */ 611 static void 612 agp_i810_flush_tlb(struct agp_softc *sc) 613 { 614 } 615 616 static int 617 agp_i810_enable(struct agp_softc *sc, u_int32_t mode) 618 { 619 620 return 0; 621 } 622 623 static struct agp_memory * 624 agp_i810_alloc_memory(struct agp_softc *sc, int type, vsize_t size) 625 { 626 struct agp_i810_softc *isc = sc->as_chipc; 627 struct agp_memory *mem; 628 629 #ifdef AGP_DEBUG 630 printf("AGP: alloc(%d, 0x%x)\n", type, (int) size); 631 #endif 632 633 if ((size & (AGP_PAGE_SIZE - 1)) != 0) 634 return 0; 635 636 if (sc->as_allocated + size > sc->as_maxmem) 637 return 0; 638 639 if (type == 1) { 640 /* 641 * Mapping local DRAM into GATT. 642 */ 643 if (isc->chiptype != CHIP_I810 ) 644 return 0; 645 if (size != isc->dcache_size) 646 return 0; 647 } else if (type == 2) { 648 /* 649 * Bogus mapping for the hardware cursor. 650 */ 651 if (size != AGP_PAGE_SIZE && size != 4 * AGP_PAGE_SIZE) 652 return 0; 653 } 654 655 mem = malloc(sizeof *mem, M_AGP, M_WAITOK|M_ZERO); 656 if (mem == NULL) 657 return NULL; 658 mem->am_id = sc->as_nextid++; 659 mem->am_size = size; 660 mem->am_type = type; 661 662 if (type == 2) { 663 /* 664 * Allocate and wire down the memory now so that we can 665 * get its physical address. 666 */ 667 mem->am_dmaseg = malloc(sizeof *mem->am_dmaseg, M_AGP, 668 M_WAITOK); 669 if (mem->am_dmaseg == NULL) { 670 free(mem, M_AGP); 671 return NULL; 672 } 673 if (agp_alloc_dmamem(sc->as_dmat, size, 0, 674 &mem->am_dmamap, &mem->am_virtual, &mem->am_physical, 675 mem->am_dmaseg, 1, &mem->am_nseg) != 0) { 676 free(mem->am_dmaseg, M_AGP); 677 free(mem, M_AGP); 678 return NULL; 679 } 680 memset(mem->am_virtual, 0, size); 681 } else if (type != 1) { 682 if (bus_dmamap_create(sc->as_dmat, size, size / PAGE_SIZE + 1, 683 size, 0, BUS_DMA_NOWAIT, 684 &mem->am_dmamap) != 0) { 685 free(mem, M_AGP); 686 return NULL; 687 } 688 } 689 690 TAILQ_INSERT_TAIL(&sc->as_memory, mem, am_link); 691 sc->as_allocated += size; 692 693 return mem; 694 } 695 696 static int 697 agp_i810_free_memory(struct agp_softc *sc, struct agp_memory *mem) 698 { 699 if (mem->am_is_bound) 700 return EBUSY; 701 702 if (mem->am_type == 2) { 703 agp_free_dmamem(sc->as_dmat, mem->am_size, mem->am_dmamap, 704 mem->am_virtual, mem->am_dmaseg, mem->am_nseg); 705 free(mem->am_dmaseg, M_AGP); 706 } 707 708 sc->as_allocated -= mem->am_size; 709 TAILQ_REMOVE(&sc->as_memory, mem, am_link); 710 free(mem, M_AGP); 711 return 0; 712 } 713 714 static int 715 agp_i810_bind_memory(struct agp_softc *sc, struct agp_memory *mem, 716 off_t offset) 717 { 718 struct agp_i810_softc *isc = sc->as_chipc; 719 u_int32_t regval, i; 720 721 /* 722 * XXX evil hack: the PGTBL_CTL appearently gets overwritten by the 723 * X server for mysterious reasons which leads to crashes if we write 724 * to the GTT through the MMIO window. 725 * Until the issue is solved, simply restore it. 726 */ 727 728 #if 0 729 regval = bus_space_read_4(isc->bst, isc->bsh, AGP_I810_PGTBL_CTL); 730 if (regval != (isc->gatt->ag_physical | 1)) { 731 printf("agp_i810_bind_memory: PGTBL_CTL is 0x%x - fixing\n", 732 regval); 733 bus_space_write_4(isc->bst, isc->bsh, AGP_I810_PGTBL_CTL, 734 isc->gatt->ag_physical | 1); 735 } 736 #endif 737 regval = 0; 738 739 if (mem->am_type == 2) { 740 WRITEGTT(offset, mem->am_physical | 1); 741 mem->am_offset = offset; 742 mem->am_is_bound = 1; 743 return 0; 744 } 745 746 if (mem->am_type != 1) 747 return agp_generic_bind_memory(sc, mem, offset); 748 749 if (isc->chiptype != CHIP_I810) 750 return EINVAL; 751 752 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) 753 WRITEGTT(offset, i | 3); 754 mem->am_is_bound = 1; 755 return 0; 756 } 757 758 static int 759 agp_i810_unbind_memory(struct agp_softc *sc, struct agp_memory *mem) 760 { 761 struct agp_i810_softc *isc = sc->as_chipc; 762 u_int32_t i; 763 764 if (mem->am_type == 2) { 765 WRITEGTT(mem->am_offset, 0); 766 mem->am_offset = 0; 767 mem->am_is_bound = 0; 768 return 0; 769 } 770 771 if (mem->am_type != 1) 772 return agp_generic_unbind_memory(sc, mem); 773 774 if (isc->chiptype != CHIP_I810) 775 return EINVAL; 776 777 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) 778 WRITEGTT(i, 0); 779 mem->am_is_bound = 0; 780 return 0; 781 } 782 783 static void 784 agp_i810_powerhook(int why, void *arg) 785 { 786 struct agp_softc *sc = (struct agp_softc *)arg; 787 struct agp_i810_softc *isc = sc->as_chipc; 788 789 if (why == PWR_RESUME) { 790 pci_conf_restore(sc->as_pc, sc->as_tag, &isc->sc_pciconf); 791 agp_flush_cache(); 792 } else if ((why == PWR_STANDBY) || (why == PWR_SUSPEND)) 793 pci_conf_capture(sc->as_pc, sc->as_tag, &isc->sc_pciconf); 794 795 return; 796 } 797
Indexes created Wed Sep 24 15:09:51 GMT 2025