agp_i810.c revision 1.32
1 /* $NetBSD: agp_i810.c,v 1.32 2006/07/30 04:23:44 simonb 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 1.32 2006/07/30 04:23:44 simonb 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; 158 159 isc = malloc(sizeof *isc, M_AGP, M_NOWAIT|M_ZERO); 160 if (isc == NULL) { 161 aprint_error(": can't allocate chipset-specific softc\n"); 162 return ENOMEM; 163 } 164 sc->as_chipc = isc; 165 sc->as_methods = &agp_i810_methods; 166 167 if (pci_find_device(&isc->vga_pa, agp_i810_vgamatch) == 0) { 168 #if NAGP_INTEL > 0 169 const struct pci_attach_args *pa = aux; 170 171 switch (PCI_PRODUCT(pa->pa_id)) { 172 case PCI_PRODUCT_INTEL_82840_HB: 173 case PCI_PRODUCT_INTEL_82865_HB: 174 case PCI_PRODUCT_INTEL_82845G_DRAM: 175 case PCI_PRODUCT_INTEL_82815_FULL_HUB: 176 return agp_intel_attach(parent, self, aux); 177 } 178 #endif 179 aprint_error(": can't find internal VGA device config space\n"); 180 free(isc, M_AGP); 181 return ENOENT; 182 } 183 184 /* XXXfvdl */ 185 sc->as_dmat = isc->vga_pa.pa_dmat; 186 187 switch (PCI_PRODUCT(isc->vga_pa.pa_id)) { 188 case PCI_PRODUCT_INTEL_82810_GC: 189 case PCI_PRODUCT_INTEL_82810_DC100_GC: 190 case PCI_PRODUCT_INTEL_82810E_GC: 191 case PCI_PRODUCT_INTEL_82815_FULL_GRAPH: 192 isc->chiptype = CHIP_I810; 193 break; 194 case PCI_PRODUCT_INTEL_82830MP_IV: 195 case PCI_PRODUCT_INTEL_82845G_IGD: 196 isc->chiptype = CHIP_I830; 197 break; 198 case PCI_PRODUCT_INTEL_82855GM_IGD: 199 case PCI_PRODUCT_INTEL_82865_IGD: 200 isc->chiptype = CHIP_I855; 201 break; 202 case PCI_PRODUCT_INTEL_82915G_IGD: 203 case PCI_PRODUCT_INTEL_82915GM_IGD: 204 case PCI_PRODUCT_INTEL_82945P_IGD: 205 case PCI_PRODUCT_INTEL_82945GM_IGD: 206 case PCI_PRODUCT_INTEL_82945GM_IGD_1: 207 isc->chiptype = CHIP_I915; 208 break; 209 } 210 211 apbase = isc->chiptype == CHIP_I915 ? AGP_I915_GMADR : AGP_I810_GMADR; 212 error = agp_map_aperture(&isc->vga_pa, sc, apbase); 213 if (error != 0) { 214 aprint_error(": can't map aperture\n"); 215 free(isc, M_AGP); 216 return error; 217 } 218 219 if (isc->chiptype == CHIP_I915) { 220 error = pci_mapreg_map(&isc->vga_pa, AGP_I915_MMADR, 221 PCI_MAPREG_TYPE_MEM, 0, &isc->bst, &isc->bsh, NULL, NULL); 222 if (error != 0) { 223 aprint_error(": can't map mmadr registers\n"); 224 agp_generic_detach(sc); 225 return error; 226 } 227 error = pci_mapreg_map(&isc->vga_pa, AGP_I915_GTTADR, 228 PCI_MAPREG_TYPE_MEM, 0, &isc->gtt_bst, &isc->gtt_bsh, 229 NULL, NULL); 230 if (error != 0) { 231 aprint_error(": can't map gttadr registers\n"); 232 /* XXX we should release mmadr here */ 233 agp_generic_detach(sc); 234 return error; 235 } 236 } else { 237 error = pci_mapreg_map(&isc->vga_pa, AGP_I810_MMADR, 238 PCI_MAPREG_TYPE_MEM, 0, &isc->bst, &isc->bsh, NULL, NULL); 239 if (error != 0) { 240 aprint_error(": can't map mmadr registers\n"); 241 agp_generic_detach(sc); 242 return error; 243 } 244 } 245 246 isc->initial_aperture = AGP_GET_APERTURE(sc); 247 248 gatt = malloc(sizeof(struct agp_gatt), M_AGP, M_NOWAIT); 249 if (!gatt) { 250 agp_generic_detach(sc); 251 return ENOMEM; 252 } 253 isc->gatt = gatt; 254 255 gatt->ag_entries = AGP_GET_APERTURE(sc) >> AGP_PAGE_SHIFT; 256 257 if (isc->chiptype == CHIP_I810) { 258 caddr_t virtual; 259 int dummyseg; 260 261 /* Some i810s have on-chip memory called dcache */ 262 if (READ1(AGP_I810_DRT) & AGP_I810_DRT_POPULATED) 263 isc->dcache_size = 4 * 1024 * 1024; 264 else 265 isc->dcache_size = 0; 266 267 /* According to the specs the gatt on the i810 must be 64k */ 268 if (agp_alloc_dmamem(sc->as_dmat, 64 * 1024, 269 0, &gatt->ag_dmamap, &virtual, &gatt->ag_physical, 270 &gatt->ag_dmaseg, 1, &dummyseg) != 0) { 271 free(gatt, M_AGP); 272 agp_generic_detach(sc); 273 return ENOMEM; 274 } 275 gatt->ag_virtual = (uint32_t *)virtual; 276 277 gatt->ag_size = gatt->ag_entries * sizeof(u_int32_t); 278 memset(gatt->ag_virtual, 0, gatt->ag_size); 279 280 agp_flush_cache(); 281 /* Install the GATT. */ 282 WRITE4(AGP_I810_PGTBL_CTL, gatt->ag_physical | 1); 283 } else if (isc->chiptype == CHIP_I830) { 284 /* The i830 automatically initializes the 128k gatt on boot. */ 285 pcireg_t reg; 286 u_int32_t pgtblctl; 287 u_int16_t gcc1; 288 289 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0); 290 gcc1 = (u_int16_t)(reg >> 16); 291 switch (gcc1 & AGP_I830_GCC1_GMS) { 292 case AGP_I830_GCC1_GMS_STOLEN_512: 293 isc->stolen = (512 - 132) * 1024 / 4096; 294 break; 295 case AGP_I830_GCC1_GMS_STOLEN_1024: 296 isc->stolen = (1024 - 132) * 1024 / 4096; 297 break; 298 case AGP_I830_GCC1_GMS_STOLEN_8192: 299 isc->stolen = (8192 - 132) * 1024 / 4096; 300 break; 301 default: 302 isc->stolen = 0; 303 aprint_error( 304 ": unknown memory configuration, disabling\n"); 305 agp_generic_detach(sc); 306 return EINVAL; 307 } 308 if (isc->stolen > 0) { 309 aprint_error(": detected %dk stolen memory\n%s", 310 isc->stolen * 4, sc->as_dev.dv_xname); 311 } 312 313 /* GATT address is already in there, make sure it's enabled */ 314 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 315 pgtblctl |= 1; 316 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 317 318 gatt->ag_physical = pgtblctl & ~1; 319 } else if (isc->chiptype == CHIP_I855) { 320 /* The 855GM automatically initializes the 128k gatt on boot. */ 321 pcireg_t reg; 322 u_int32_t pgtblctl; 323 u_int16_t gcc1; 324 325 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I855_GCC1); 326 gcc1 = (u_int16_t)(reg >> 16); 327 switch (gcc1 & AGP_I855_GCC1_GMS) { 328 case AGP_I855_GCC1_GMS_STOLEN_1M: 329 isc->stolen = (1024 - 132) * 1024 / 4096; 330 break; 331 case AGP_I855_GCC1_GMS_STOLEN_4M: 332 isc->stolen = (4096 - 132) * 1024 / 4096; 333 break; 334 case AGP_I855_GCC1_GMS_STOLEN_8M: 335 isc->stolen = (8192 - 132) * 1024 / 4096; 336 break; 337 case AGP_I855_GCC1_GMS_STOLEN_16M: 338 isc->stolen = (16384 - 132) * 1024 / 4096; 339 break; 340 case AGP_I855_GCC1_GMS_STOLEN_32M: 341 isc->stolen = (32768 - 132) * 1024 / 4096; 342 break; 343 default: 344 isc->stolen = 0; 345 aprint_error( 346 ": unknown memory configuration, disabling\n"); 347 agp_generic_detach(sc); 348 return EINVAL; 349 } 350 if (isc->stolen > 0) { 351 aprint_error(": detected %dk stolen memory\n%s", 352 isc->stolen * 4, sc->as_dev.dv_xname); 353 } 354 355 /* GATT address is already in there, make sure it's enabled */ 356 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 357 pgtblctl |= 1; 358 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 359 360 gatt->ag_physical = pgtblctl & ~1; 361 } else { /* CHIP_I915 */ 362 /* The 915G automatically initializes the 256k gatt on boot. */ 363 pcireg_t reg; 364 u_int32_t pgtblctl; 365 u_int16_t gcc1; 366 367 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I915_GCC1); 368 gcc1 = (u_int16_t)(reg >> 16); 369 switch (gcc1 & AGP_I915_GCC1_GMS) { 370 case AGP_I915_GCC1_GMS_STOLEN_0M: 371 isc->stolen = 0; 372 break; 373 case AGP_I915_GCC1_GMS_STOLEN_1M: 374 isc->stolen = (1024 - 260) * 1024 / 4096; 375 break; 376 case AGP_I915_GCC1_GMS_STOLEN_8M: 377 isc->stolen = (8192 - 260) * 1024 / 4096; 378 break; 379 default: 380 isc->stolen = 0; 381 aprint_error( 382 ": unknown memory configuration, disabling\n"); 383 agp_generic_detach(sc); 384 return EINVAL; 385 } 386 if (isc->stolen > 0) { 387 aprint_error(": detected %dk stolen memory\n%s", 388 isc->stolen * 4, sc->as_dev.dv_xname); 389 } 390 391 /* GATT address is already in there, make sure it's enabled */ 392 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 393 pgtblctl |= 1; 394 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 395 396 gatt->ag_physical = pgtblctl & ~1; 397 } 398 399 /* 400 * Make sure the chipset can see everything. 401 */ 402 agp_flush_cache(); 403 404 isc->sc_powerhook = powerhook_establish(agp_i810_powerhook, sc); 405 if (isc->sc_powerhook == NULL) 406 printf("%s: WARNING: unable to establish PCI power hook\n", 407 sc->as_dev.dv_xname); 408 409 return 0; 410 } 411 412 #if 0 413 static int 414 agp_i810_detach(struct agp_softc *sc) 415 { 416 int error; 417 struct agp_i810_softc *isc = sc->as_chipc; 418 419 error = agp_generic_detach(sc); 420 if (error) 421 return error; 422 423 /* Clear the GATT base. */ 424 if (sc->chiptype == CHIP_I810) { 425 WRITE4(AGP_I810_PGTBL_CTL, 0); 426 } else { 427 unsigned int pgtblctl; 428 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 429 pgtblctl &= ~1; 430 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 431 } 432 433 /* Put the aperture back the way it started. */ 434 AGP_SET_APERTURE(sc, isc->initial_aperture); 435 436 if (sc->chiptype == CHIP_I810) { 437 agp_free_dmamem(sc->as_dmat, gatt->ag_size, gatt->ag_dmamap, 438 (caddr_t)gatt->ag_virtual, &gatt->ag_dmaseg, 1); 439 } 440 free(sc->gatt, M_AGP); 441 442 return 0; 443 } 444 #endif 445 446 static u_int32_t 447 agp_i810_get_aperture(struct agp_softc *sc) 448 { 449 struct agp_i810_softc *isc = sc->as_chipc; 450 pcireg_t reg; 451 452 if (isc->chiptype == CHIP_I810) { 453 u_int16_t miscc; 454 455 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I810_SMRAM); 456 miscc = (u_int16_t)(reg >> 16); 457 if ((miscc & AGP_I810_MISCC_WINSIZE) == 458 AGP_I810_MISCC_WINSIZE_32) 459 return 32 * 1024 * 1024; 460 else 461 return 64 * 1024 * 1024; 462 } else if (isc->chiptype == CHIP_I830) { 463 u_int16_t gcc1; 464 465 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0); 466 gcc1 = (u_int16_t)(reg >> 16); 467 if ((gcc1 & AGP_I830_GCC1_GMASIZE) == AGP_I830_GCC1_GMASIZE_64) 468 return 64 * 1024 * 1024; 469 else 470 return 128 * 1024 * 1024; 471 } else if (isc->chiptype == CHIP_I855) { 472 return 128 * 1024 * 1024; 473 } else { /* CHIP_I915 */ 474 u_int16_t msac; 475 476 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I915_MSAC); 477 msac = (u_int16_t)(reg >> 16); 478 if (msac & AGP_I915_MSAC_APER_128M) 479 return 128 * 1024 * 1024; 480 else 481 return 256 * 1024 * 1024; 482 } 483 } 484 485 static int 486 agp_i810_set_aperture(struct agp_softc *sc, u_int32_t aperture) 487 { 488 struct agp_i810_softc *isc = sc->as_chipc; 489 pcireg_t reg; 490 491 if (isc->chiptype == CHIP_I810) { 492 u_int16_t miscc; 493 494 /* 495 * Double check for sanity. 496 */ 497 if (aperture != (32 * 1024 * 1024) && 498 aperture != (64 * 1024 * 1024)) { 499 printf("%s: bad aperture size %d\n", 500 sc->as_dev.dv_xname, aperture); 501 return EINVAL; 502 } 503 504 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I810_SMRAM); 505 miscc = (u_int16_t)(reg >> 16); 506 miscc &= ~AGP_I810_MISCC_WINSIZE; 507 if (aperture == 32 * 1024 * 1024) 508 miscc |= AGP_I810_MISCC_WINSIZE_32; 509 else 510 miscc |= AGP_I810_MISCC_WINSIZE_64; 511 512 reg &= 0x0000ffff; 513 reg |= ((pcireg_t)miscc) << 16; 514 pci_conf_write(sc->as_pc, sc->as_tag, AGP_I810_SMRAM, reg); 515 } else if (isc->chiptype == CHIP_I830) { 516 u_int16_t gcc1; 517 518 if (aperture != (64 * 1024 * 1024) && 519 aperture != (128 * 1024 * 1024)) { 520 printf("%s: bad aperture size %d\n", 521 sc->as_dev.dv_xname, aperture); 522 return EINVAL; 523 } 524 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0); 525 gcc1 = (u_int16_t)(reg >> 16); 526 gcc1 &= ~AGP_I830_GCC1_GMASIZE; 527 if (aperture == 64 * 1024 * 1024) 528 gcc1 |= AGP_I830_GCC1_GMASIZE_64; 529 else 530 gcc1 |= AGP_I830_GCC1_GMASIZE_128; 531 532 reg &= 0x0000ffff; 533 reg |= ((pcireg_t)gcc1) << 16; 534 pci_conf_write(sc->as_pc, sc->as_tag, AGP_I830_GCC0, reg); 535 } else { /* CHIP_I855 or CHIP_I915 */ 536 if (aperture != agp_i810_get_aperture(sc)) { 537 printf("%s: bad aperture size %d\n", 538 sc->as_dev.dv_xname, aperture); 539 return EINVAL; 540 } 541 } 542 543 return 0; 544 } 545 546 static int 547 agp_i810_bind_page(struct agp_softc *sc, off_t offset, bus_addr_t physical) 548 { 549 struct agp_i810_softc *isc = sc->as_chipc; 550 551 if (offset < 0 || offset >= (isc->gatt->ag_entries << AGP_PAGE_SHIFT)) { 552 #ifdef AGP_DEBUG 553 printf("%s: failed: offset 0x%08x, shift %d, entries %d\n", 554 sc->as_dev.dv_xname, (int)offset, AGP_PAGE_SHIFT, 555 isc->gatt->ag_entries); 556 #endif 557 return EINVAL; 558 } 559 560 if (isc->chiptype != CHIP_I830) { 561 if ((offset >> AGP_PAGE_SHIFT) < isc->stolen) { 562 #ifdef AGP_DEBUG 563 printf("%s: trying to bind into stolen memory", 564 sc->as_dev.dv_xname); 565 #endif 566 return EINVAL; 567 } 568 } 569 570 WRITEGTT(offset, physical | 1); 571 return 0; 572 } 573 574 static int 575 agp_i810_unbind_page(struct agp_softc *sc, off_t offset) 576 { 577 struct agp_i810_softc *isc = sc->as_chipc; 578 579 if (offset < 0 || offset >= (isc->gatt->ag_entries << AGP_PAGE_SHIFT)) 580 return EINVAL; 581 582 if (isc->chiptype != CHIP_I810 ) { 583 if ((offset >> AGP_PAGE_SHIFT) < isc->stolen) { 584 #ifdef AGP_DEBUG 585 printf("%s: trying to unbind from stolen memory", 586 sc->as_dev.dv_xname); 587 #endif 588 return EINVAL; 589 } 590 } 591 592 WRITEGTT(offset, 0); 593 return 0; 594 } 595 596 /* 597 * Writing via memory mapped registers already flushes all TLBs. 598 */ 599 static void 600 agp_i810_flush_tlb(struct agp_softc *sc) 601 { 602 } 603 604 static int 605 agp_i810_enable(struct agp_softc *sc, u_int32_t mode) 606 { 607 608 return 0; 609 } 610 611 static struct agp_memory * 612 agp_i810_alloc_memory(struct agp_softc *sc, int type, vsize_t size) 613 { 614 struct agp_i810_softc *isc = sc->as_chipc; 615 struct agp_memory *mem; 616 617 #ifdef AGP_DEBUG 618 printf("AGP: alloc(%d, 0x%x)\n", type, (int) size); 619 #endif 620 621 if ((size & (AGP_PAGE_SIZE - 1)) != 0) 622 return 0; 623 624 if (sc->as_allocated + size > sc->as_maxmem) 625 return 0; 626 627 if (type == 1) { 628 /* 629 * Mapping local DRAM into GATT. 630 */ 631 if (isc->chiptype != CHIP_I810 ) 632 return 0; 633 if (size != isc->dcache_size) 634 return 0; 635 } else if (type == 2) { 636 /* 637 * Bogus mapping for the hardware cursor. 638 */ 639 if (size != AGP_PAGE_SIZE && size != 4 * AGP_PAGE_SIZE) 640 return 0; 641 } 642 643 mem = malloc(sizeof *mem, M_AGP, M_WAITOK|M_ZERO); 644 if (mem == NULL) 645 return NULL; 646 mem->am_id = sc->as_nextid++; 647 mem->am_size = size; 648 mem->am_type = type; 649 650 if (type == 2) { 651 /* 652 * Allocate and wire down the memory now so that we can 653 * get its physical address. 654 */ 655 mem->am_dmaseg = malloc(sizeof *mem->am_dmaseg, M_AGP, 656 M_WAITOK); 657 if (mem->am_dmaseg == NULL) { 658 free(mem, M_AGP); 659 return NULL; 660 } 661 if (agp_alloc_dmamem(sc->as_dmat, size, 0, 662 &mem->am_dmamap, &mem->am_virtual, &mem->am_physical, 663 mem->am_dmaseg, 1, &mem->am_nseg) != 0) { 664 free(mem->am_dmaseg, M_AGP); 665 free(mem, M_AGP); 666 return NULL; 667 } 668 memset(mem->am_virtual, 0, size); 669 } else if (type != 1) { 670 if (bus_dmamap_create(sc->as_dmat, size, size / PAGE_SIZE + 1, 671 size, 0, BUS_DMA_NOWAIT, 672 &mem->am_dmamap) != 0) { 673 free(mem, M_AGP); 674 return NULL; 675 } 676 } 677 678 TAILQ_INSERT_TAIL(&sc->as_memory, mem, am_link); 679 sc->as_allocated += size; 680 681 return mem; 682 } 683 684 static int 685 agp_i810_free_memory(struct agp_softc *sc, struct agp_memory *mem) 686 { 687 if (mem->am_is_bound) 688 return EBUSY; 689 690 if (mem->am_type == 2) { 691 agp_free_dmamem(sc->as_dmat, mem->am_size, mem->am_dmamap, 692 mem->am_virtual, mem->am_dmaseg, mem->am_nseg); 693 free(mem->am_dmaseg, M_AGP); 694 } 695 696 sc->as_allocated -= mem->am_size; 697 TAILQ_REMOVE(&sc->as_memory, mem, am_link); 698 free(mem, M_AGP); 699 return 0; 700 } 701 702 static int 703 agp_i810_bind_memory(struct agp_softc *sc, struct agp_memory *mem, 704 off_t offset) 705 { 706 struct agp_i810_softc *isc = sc->as_chipc; 707 u_int32_t regval, i; 708 709 /* 710 * XXX evil hack: the PGTBL_CTL appearently gets overwritten by the 711 * X server for mysterious reasons which leads to crashes if we write 712 * to the GTT through the MMIO window. 713 * Until the issue is solved, simply restore it. 714 */ 715 regval = bus_space_read_4(isc->bst, isc->bsh, AGP_I810_PGTBL_CTL); 716 if (regval != (isc->gatt->ag_physical | 1)) { 717 printf("agp_i810_bind_memory: PGTBL_CTL is 0x%x - fixing\n", 718 regval); 719 bus_space_write_4(isc->bst, isc->bsh, AGP_I810_PGTBL_CTL, 720 isc->gatt->ag_physical | 1); 721 } 722 723 if (mem->am_type == 2) { 724 WRITEGTT(offset, mem->am_physical | 1); 725 mem->am_offset = offset; 726 mem->am_is_bound = 1; 727 return 0; 728 } 729 730 if (mem->am_type != 1) 731 return agp_generic_bind_memory(sc, mem, offset); 732 733 if (isc->chiptype != CHIP_I810) 734 return EINVAL; 735 736 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) 737 WRITEGTT(offset, i | 3); 738 mem->am_is_bound = 1; 739 return 0; 740 } 741 742 static int 743 agp_i810_unbind_memory(struct agp_softc *sc, struct agp_memory *mem) 744 { 745 struct agp_i810_softc *isc = sc->as_chipc; 746 u_int32_t i; 747 748 if (mem->am_type == 2) { 749 WRITEGTT(mem->am_offset, 0); 750 mem->am_offset = 0; 751 mem->am_is_bound = 0; 752 return 0; 753 } 754 755 if (mem->am_type != 1) 756 return agp_generic_unbind_memory(sc, mem); 757 758 if (isc->chiptype != CHIP_I810) 759 return EINVAL; 760 761 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) 762 WRITEGTT(i, 0); 763 mem->am_is_bound = 0; 764 return 0; 765 } 766 767 static void 768 agp_i810_powerhook(int why, void *arg) 769 { 770 struct agp_softc *sc = (struct agp_softc *)arg; 771 struct agp_i810_softc *isc = sc->as_chipc; 772 773 if (why == PWR_RESUME) { 774 pci_conf_restore(sc->as_pc, sc->as_tag, &isc->sc_pciconf); 775 agp_flush_cache(); 776 } else if ((why == PWR_STANDBY) || (why == PWR_SUSPEND)) 777 pci_conf_capture(sc->as_pc, sc->as_tag, &isc->sc_pciconf); 778 779 return; 780 } 781
Indexes created Wed Sep 24 15:09:51 GMT 2025