agp_i810.c revision 1.38
1 /* $NetBSD: agp_i810.c,v 1.38 2007/03/23 16:27:59 jmcneill 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 1.38 2007/03/23 16:27:59 jmcneill 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 pci_mapreg_info(isc->vga_pa.pa_pc, isc->vga_pa.pa_tag, 222 AGP_I915_MMADR, PCI_MAPREG_TYPE_MEM, NULL, 223 &mmadrsize, NULL); 224 error = pci_mapreg_map(&isc->vga_pa, AGP_I915_MMADR, 225 PCI_MAPREG_TYPE_MEM, 0, &isc->bst, &isc->bsh, NULL, NULL); 226 if (error != 0) { 227 aprint_error(": can't map mmadr registers\n"); 228 agp_generic_detach(sc); 229 return error; 230 } 231 error = pci_mapreg_map(&isc->vga_pa, AGP_I915_GTTADR, 232 PCI_MAPREG_TYPE_MEM, 0, &isc->gtt_bst, &isc->gtt_bsh, 233 NULL, NULL); 234 if (error != 0) { 235 aprint_error(": can't map gttadr registers\n"); 236 /* XXX we should release mmadr here */ 237 agp_generic_detach(sc); 238 return error; 239 } 240 } else { 241 pci_mapreg_info(isc->vga_pa.pa_pc, isc->vga_pa.pa_tag, 242 AGP_I810_MMADR, PCI_MAPREG_TYPE_MEM, NULL, 243 &mmadrsize, NULL); 244 error = pci_mapreg_map(&isc->vga_pa, AGP_I810_MMADR, 245 PCI_MAPREG_TYPE_MEM, 0, &isc->bst, &isc->bsh, NULL, NULL); 246 if (error != 0) { 247 aprint_error(": can't map mmadr registers\n"); 248 agp_generic_detach(sc); 249 return error; 250 } 251 } 252 253 isc->initial_aperture = AGP_GET_APERTURE(sc); 254 255 gatt = malloc(sizeof(struct agp_gatt), M_AGP, M_NOWAIT); 256 if (!gatt) { 257 agp_generic_detach(sc); 258 return ENOMEM; 259 } 260 isc->gatt = gatt; 261 262 gatt->ag_entries = AGP_GET_APERTURE(sc) >> AGP_PAGE_SHIFT; 263 264 if (isc->chiptype == CHIP_I810) { 265 void *virtual; 266 int dummyseg; 267 268 /* Some i810s have on-chip memory called dcache */ 269 if (READ1(AGP_I810_DRT) & AGP_I810_DRT_POPULATED) 270 isc->dcache_size = 4 * 1024 * 1024; 271 else 272 isc->dcache_size = 0; 273 274 /* According to the specs the gatt on the i810 must be 64k */ 275 if (agp_alloc_dmamem(sc->as_dmat, 64 * 1024, 276 0, &gatt->ag_dmamap, &virtual, &gatt->ag_physical, 277 &gatt->ag_dmaseg, 1, &dummyseg) != 0) { 278 free(gatt, M_AGP); 279 agp_generic_detach(sc); 280 return ENOMEM; 281 } 282 gatt->ag_virtual = (uint32_t *)virtual; 283 284 gatt->ag_size = gatt->ag_entries * sizeof(u_int32_t); 285 memset(gatt->ag_virtual, 0, gatt->ag_size); 286 287 agp_flush_cache(); 288 /* Install the GATT. */ 289 WRITE4(AGP_I810_PGTBL_CTL, gatt->ag_physical | 1); 290 } else if (isc->chiptype == CHIP_I830) { 291 /* The i830 automatically initializes the 128k gatt on boot. */ 292 pcireg_t reg; 293 u_int32_t pgtblctl; 294 u_int16_t gcc1; 295 296 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0); 297 gcc1 = (u_int16_t)(reg >> 16); 298 switch (gcc1 & AGP_I830_GCC1_GMS) { 299 case AGP_I830_GCC1_GMS_STOLEN_512: 300 isc->stolen = (512 - 132) * 1024 / 4096; 301 break; 302 case AGP_I830_GCC1_GMS_STOLEN_1024: 303 isc->stolen = (1024 - 132) * 1024 / 4096; 304 break; 305 case AGP_I830_GCC1_GMS_STOLEN_8192: 306 isc->stolen = (8192 - 132) * 1024 / 4096; 307 break; 308 default: 309 isc->stolen = 0; 310 aprint_error( 311 ": unknown memory configuration, disabling\n"); 312 agp_generic_detach(sc); 313 return EINVAL; 314 } 315 if (isc->stolen > 0) { 316 aprint_error(": detected %dk stolen memory\n%s", 317 isc->stolen * 4, sc->as_dev.dv_xname); 318 } 319 320 /* GATT address is already in there, make sure it's enabled */ 321 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 322 pgtblctl |= 1; 323 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 324 325 gatt->ag_physical = pgtblctl & ~1; 326 } else if (isc->chiptype == CHIP_I855) { 327 /* The 855GM automatically initializes the 128k gatt on boot. */ 328 pcireg_t reg; 329 u_int32_t pgtblctl; 330 u_int16_t gcc1; 331 332 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I855_GCC1); 333 gcc1 = (u_int16_t)(reg >> 16); 334 switch (gcc1 & AGP_I855_GCC1_GMS) { 335 case AGP_I855_GCC1_GMS_STOLEN_1M: 336 isc->stolen = (1024 - 132) * 1024 / 4096; 337 break; 338 case AGP_I855_GCC1_GMS_STOLEN_4M: 339 isc->stolen = (4096 - 132) * 1024 / 4096; 340 break; 341 case AGP_I855_GCC1_GMS_STOLEN_8M: 342 isc->stolen = (8192 - 132) * 1024 / 4096; 343 break; 344 case AGP_I855_GCC1_GMS_STOLEN_16M: 345 isc->stolen = (16384 - 132) * 1024 / 4096; 346 break; 347 case AGP_I855_GCC1_GMS_STOLEN_32M: 348 isc->stolen = (32768 - 132) * 1024 / 4096; 349 break; 350 default: 351 isc->stolen = 0; 352 aprint_error( 353 ": unknown memory configuration, disabling\n"); 354 agp_generic_detach(sc); 355 return EINVAL; 356 } 357 if (isc->stolen > 0) { 358 aprint_error(": detected %dk stolen memory\n%s", 359 isc->stolen * 4, sc->as_dev.dv_xname); 360 } 361 362 /* GATT address is already in there, make sure it's enabled */ 363 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 364 pgtblctl |= 1; 365 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 366 367 gatt->ag_physical = pgtblctl & ~1; 368 } else { /* CHIP_I915 */ 369 /* The 915G automatically initializes the 256k gatt on boot. */ 370 pcireg_t reg; 371 u_int32_t pgtblctl; 372 u_int16_t gcc1; 373 374 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I915_GCC1); 375 gcc1 = (u_int16_t)(reg >> 16); 376 switch (gcc1 & AGP_I915_GCC1_GMS) { 377 case AGP_I915_GCC1_GMS_STOLEN_0M: 378 isc->stolen = 0; 379 break; 380 case AGP_I915_GCC1_GMS_STOLEN_1M: 381 isc->stolen = (1024 - 260) * 1024 / 4096; 382 break; 383 case AGP_I915_GCC1_GMS_STOLEN_8M: 384 isc->stolen = (8192 - 260) * 1024 / 4096; 385 break; 386 default: 387 isc->stolen = 0; 388 aprint_error( 389 ": unknown memory configuration, disabling\n"); 390 agp_generic_detach(sc); 391 return EINVAL; 392 } 393 if (isc->stolen > 0) { 394 aprint_error(": detected %dk stolen memory\n%s", 395 isc->stolen * 4, sc->as_dev.dv_xname); 396 } 397 398 /* GATT address is already in there, make sure it's enabled */ 399 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 400 pgtblctl |= 1; 401 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 402 403 gatt->ag_physical = pgtblctl & ~1; 404 } 405 406 /* 407 * Make sure the chipset can see everything. 408 */ 409 agp_flush_cache(); 410 411 isc->sc_powerhook = powerhook_establish(sc->as_dev.dv_xname, 412 agp_i810_powerhook, sc); 413 if (isc->sc_powerhook == NULL) 414 printf("%s: WARNING: unable to establish PCI power hook\n", 415 sc->as_dev.dv_xname); 416 417 /* 418 * another device (drm) may need access to this region 419 * we do not need it anymore 420 */ 421 bus_space_unmap(isc->bst, isc->bsh, mmadrsize); 422 423 return 0; 424 } 425 426 #if 0 427 static int 428 agp_i810_detach(struct agp_softc *sc) 429 { 430 int error; 431 struct agp_i810_softc *isc = sc->as_chipc; 432 433 error = agp_generic_detach(sc); 434 if (error) 435 return error; 436 437 /* Clear the GATT base. */ 438 if (sc->chiptype == CHIP_I810) { 439 WRITE4(AGP_I810_PGTBL_CTL, 0); 440 } else { 441 unsigned int pgtblctl; 442 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 443 pgtblctl &= ~1; 444 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 445 } 446 447 /* Put the aperture back the way it started. */ 448 AGP_SET_APERTURE(sc, isc->initial_aperture); 449 450 if (sc->chiptype == CHIP_I810) { 451 agp_free_dmamem(sc->as_dmat, gatt->ag_size, gatt->ag_dmamap, 452 (void *)gatt->ag_virtual, &gatt->ag_dmaseg, 1); 453 } 454 free(sc->gatt, M_AGP); 455 456 return 0; 457 } 458 #endif 459 460 static u_int32_t 461 agp_i810_get_aperture(struct agp_softc *sc) 462 { 463 struct agp_i810_softc *isc = sc->as_chipc; 464 pcireg_t reg; 465 466 if (isc->chiptype == CHIP_I810) { 467 u_int16_t miscc; 468 469 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I810_SMRAM); 470 miscc = (u_int16_t)(reg >> 16); 471 if ((miscc & AGP_I810_MISCC_WINSIZE) == 472 AGP_I810_MISCC_WINSIZE_32) 473 return 32 * 1024 * 1024; 474 else 475 return 64 * 1024 * 1024; 476 } else if (isc->chiptype == CHIP_I830) { 477 u_int16_t gcc1; 478 479 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0); 480 gcc1 = (u_int16_t)(reg >> 16); 481 if ((gcc1 & AGP_I830_GCC1_GMASIZE) == AGP_I830_GCC1_GMASIZE_64) 482 return 64 * 1024 * 1024; 483 else 484 return 128 * 1024 * 1024; 485 } else if (isc->chiptype == CHIP_I855) { 486 return 128 * 1024 * 1024; 487 } else { /* CHIP_I915 */ 488 u_int16_t msac; 489 490 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I915_MSAC); 491 msac = (u_int16_t)(reg >> 16); 492 if (msac & AGP_I915_MSAC_APER_128M) 493 return 128 * 1024 * 1024; 494 else 495 return 256 * 1024 * 1024; 496 } 497 } 498 499 static int 500 agp_i810_set_aperture(struct agp_softc *sc, u_int32_t aperture) 501 { 502 struct agp_i810_softc *isc = sc->as_chipc; 503 pcireg_t reg; 504 505 if (isc->chiptype == CHIP_I810) { 506 u_int16_t miscc; 507 508 /* 509 * Double check for sanity. 510 */ 511 if (aperture != (32 * 1024 * 1024) && 512 aperture != (64 * 1024 * 1024)) { 513 printf("%s: bad aperture size %d\n", 514 sc->as_dev.dv_xname, aperture); 515 return EINVAL; 516 } 517 518 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I810_SMRAM); 519 miscc = (u_int16_t)(reg >> 16); 520 miscc &= ~AGP_I810_MISCC_WINSIZE; 521 if (aperture == 32 * 1024 * 1024) 522 miscc |= AGP_I810_MISCC_WINSIZE_32; 523 else 524 miscc |= AGP_I810_MISCC_WINSIZE_64; 525 526 reg &= 0x0000ffff; 527 reg |= ((pcireg_t)miscc) << 16; 528 pci_conf_write(sc->as_pc, sc->as_tag, AGP_I810_SMRAM, reg); 529 } else if (isc->chiptype == CHIP_I830) { 530 u_int16_t gcc1; 531 532 if (aperture != (64 * 1024 * 1024) && 533 aperture != (128 * 1024 * 1024)) { 534 printf("%s: bad aperture size %d\n", 535 sc->as_dev.dv_xname, aperture); 536 return EINVAL; 537 } 538 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0); 539 gcc1 = (u_int16_t)(reg >> 16); 540 gcc1 &= ~AGP_I830_GCC1_GMASIZE; 541 if (aperture == 64 * 1024 * 1024) 542 gcc1 |= AGP_I830_GCC1_GMASIZE_64; 543 else 544 gcc1 |= AGP_I830_GCC1_GMASIZE_128; 545 546 reg &= 0x0000ffff; 547 reg |= ((pcireg_t)gcc1) << 16; 548 pci_conf_write(sc->as_pc, sc->as_tag, AGP_I830_GCC0, reg); 549 } else { /* CHIP_I855 or CHIP_I915 */ 550 if (aperture != agp_i810_get_aperture(sc)) { 551 printf("%s: bad aperture size %d\n", 552 sc->as_dev.dv_xname, aperture); 553 return EINVAL; 554 } 555 } 556 557 return 0; 558 } 559 560 static int 561 agp_i810_bind_page(struct agp_softc *sc, off_t offset, bus_addr_t physical) 562 { 563 struct agp_i810_softc *isc = sc->as_chipc; 564 565 if (offset < 0 || offset >= (isc->gatt->ag_entries << AGP_PAGE_SHIFT)) { 566 #ifdef AGP_DEBUG 567 printf("%s: failed: offset 0x%08x, shift %d, entries %d\n", 568 sc->as_dev.dv_xname, (int)offset, AGP_PAGE_SHIFT, 569 isc->gatt->ag_entries); 570 #endif 571 return EINVAL; 572 } 573 574 if (isc->chiptype != CHIP_I830) { 575 if ((offset >> AGP_PAGE_SHIFT) < isc->stolen) { 576 #ifdef AGP_DEBUG 577 printf("%s: trying to bind into stolen memory", 578 sc->as_dev.dv_xname); 579 #endif 580 return EINVAL; 581 } 582 } 583 584 WRITEGTT(offset, physical | 1); 585 return 0; 586 } 587 588 static int 589 agp_i810_unbind_page(struct agp_softc *sc, off_t offset) 590 { 591 struct agp_i810_softc *isc = sc->as_chipc; 592 593 if (offset < 0 || offset >= (isc->gatt->ag_entries << AGP_PAGE_SHIFT)) 594 return EINVAL; 595 596 if (isc->chiptype != CHIP_I810 ) { 597 if ((offset >> AGP_PAGE_SHIFT) < isc->stolen) { 598 #ifdef AGP_DEBUG 599 printf("%s: trying to unbind from stolen memory", 600 sc->as_dev.dv_xname); 601 #endif 602 return EINVAL; 603 } 604 } 605 606 WRITEGTT(offset, 0); 607 return 0; 608 } 609 610 /* 611 * Writing via memory mapped registers already flushes all TLBs. 612 */ 613 static void 614 agp_i810_flush_tlb(struct agp_softc *sc) 615 { 616 } 617 618 static int 619 agp_i810_enable(struct agp_softc *sc, u_int32_t mode) 620 { 621 622 return 0; 623 } 624 625 static struct agp_memory * 626 agp_i810_alloc_memory(struct agp_softc *sc, int type, vsize_t size) 627 { 628 struct agp_i810_softc *isc = sc->as_chipc; 629 struct agp_memory *mem; 630 631 #ifdef AGP_DEBUG 632 printf("AGP: alloc(%d, 0x%x)\n", type, (int) size); 633 #endif 634 635 if ((size & (AGP_PAGE_SIZE - 1)) != 0) 636 return 0; 637 638 if (sc->as_allocated + size > sc->as_maxmem) 639 return 0; 640 641 if (type == 1) { 642 /* 643 * Mapping local DRAM into GATT. 644 */ 645 if (isc->chiptype != CHIP_I810 ) 646 return 0; 647 if (size != isc->dcache_size) 648 return 0; 649 } else if (type == 2) { 650 /* 651 * Bogus mapping for the hardware cursor. 652 */ 653 if (size != AGP_PAGE_SIZE && size != 4 * AGP_PAGE_SIZE) 654 return 0; 655 } 656 657 mem = malloc(sizeof *mem, M_AGP, M_WAITOK|M_ZERO); 658 if (mem == NULL) 659 return NULL; 660 mem->am_id = sc->as_nextid++; 661 mem->am_size = size; 662 mem->am_type = type; 663 664 if (type == 2) { 665 /* 666 * Allocate and wire down the memory now so that we can 667 * get its physical address. 668 */ 669 mem->am_dmaseg = malloc(sizeof *mem->am_dmaseg, M_AGP, 670 M_WAITOK); 671 if (mem->am_dmaseg == NULL) { 672 free(mem, M_AGP); 673 return NULL; 674 } 675 if (agp_alloc_dmamem(sc->as_dmat, size, 0, 676 &mem->am_dmamap, &mem->am_virtual, &mem->am_physical, 677 mem->am_dmaseg, 1, &mem->am_nseg) != 0) { 678 free(mem->am_dmaseg, M_AGP); 679 free(mem, M_AGP); 680 return NULL; 681 } 682 memset(mem->am_virtual, 0, size); 683 } else if (type != 1) { 684 if (bus_dmamap_create(sc->as_dmat, size, size / PAGE_SIZE + 1, 685 size, 0, BUS_DMA_NOWAIT, 686 &mem->am_dmamap) != 0) { 687 free(mem, M_AGP); 688 return NULL; 689 } 690 } 691 692 TAILQ_INSERT_TAIL(&sc->as_memory, mem, am_link); 693 sc->as_allocated += size; 694 695 return mem; 696 } 697 698 static int 699 agp_i810_free_memory(struct agp_softc *sc, struct agp_memory *mem) 700 { 701 if (mem->am_is_bound) 702 return EBUSY; 703 704 if (mem->am_type == 2) { 705 agp_free_dmamem(sc->as_dmat, mem->am_size, mem->am_dmamap, 706 mem->am_virtual, mem->am_dmaseg, mem->am_nseg); 707 free(mem->am_dmaseg, M_AGP); 708 } 709 710 sc->as_allocated -= mem->am_size; 711 TAILQ_REMOVE(&sc->as_memory, mem, am_link); 712 free(mem, M_AGP); 713 return 0; 714 } 715 716 static int 717 agp_i810_bind_memory(struct agp_softc *sc, struct agp_memory *mem, 718 off_t offset) 719 { 720 struct agp_i810_softc *isc = sc->as_chipc; 721 u_int32_t regval, i; 722 723 /* 724 * XXX evil hack: the PGTBL_CTL appearently gets overwritten by the 725 * X server for mysterious reasons which leads to crashes if we write 726 * to the GTT through the MMIO window. 727 * Until the issue is solved, simply restore it. 728 */ 729 730 #if 0 731 regval = bus_space_read_4(isc->bst, isc->bsh, AGP_I810_PGTBL_CTL); 732 if (regval != (isc->gatt->ag_physical | 1)) { 733 printf("agp_i810_bind_memory: PGTBL_CTL is 0x%x - fixing\n", 734 regval); 735 bus_space_write_4(isc->bst, isc->bsh, AGP_I810_PGTBL_CTL, 736 isc->gatt->ag_physical | 1); 737 } 738 #endif 739 regval = 0; 740 741 if (mem->am_type == 2) { 742 WRITEGTT(offset, mem->am_physical | 1); 743 mem->am_offset = offset; 744 mem->am_is_bound = 1; 745 return 0; 746 } 747 748 if (mem->am_type != 1) 749 return agp_generic_bind_memory(sc, mem, offset); 750 751 if (isc->chiptype != CHIP_I810) 752 return EINVAL; 753 754 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) 755 WRITEGTT(offset, i | 3); 756 mem->am_is_bound = 1; 757 return 0; 758 } 759 760 static int 761 agp_i810_unbind_memory(struct agp_softc *sc, struct agp_memory *mem) 762 { 763 struct agp_i810_softc *isc = sc->as_chipc; 764 u_int32_t i; 765 766 if (mem->am_type == 2) { 767 WRITEGTT(mem->am_offset, 0); 768 mem->am_offset = 0; 769 mem->am_is_bound = 0; 770 return 0; 771 } 772 773 if (mem->am_type != 1) 774 return agp_generic_unbind_memory(sc, mem); 775 776 if (isc->chiptype != CHIP_I810) 777 return EINVAL; 778 779 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) 780 WRITEGTT(i, 0); 781 mem->am_is_bound = 0; 782 return 0; 783 } 784 785 static void 786 agp_i810_powerhook(int why, void *arg) 787 { 788 struct agp_softc *sc = (struct agp_softc *)arg; 789 struct agp_i810_softc *isc = sc->as_chipc; 790 791 if (why == PWR_RESUME) { 792 pci_conf_restore(sc->as_pc, sc->as_tag, &isc->sc_pciconf); 793 agp_flush_cache(); 794 } else if ((why == PWR_STANDBY) || (why == PWR_SUSPEND)) 795 pci_conf_capture(sc->as_pc, sc->as_tag, &isc->sc_pciconf); 796 797 return; 798 } 799
Indexes created Tue Oct 07 21:09:53 GMT 2025