1 /* $NetBSD: agp_i810.c,v 1.73 2011/04/04 20:37:56 dyoung 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 1.73 2011/04/04 20:37:56 dyoung 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/proc.h> 40 #include <sys/device.h> 41 #include <sys/conf.h> 42 43 #include <dev/pci/pcivar.h> 44 #include <dev/pci/pcireg.h> 45 #include <dev/pci/pcidevs.h> 46 #include <dev/pci/agpvar.h> 47 #include <dev/pci/agpreg.h> 48 49 #include <sys/agpio.h> 50 51 #include <sys/bus.h> 52 53 #include "agp_intel.h" 54 55 #define READ1(off) bus_space_read_1(isc->bst, isc->bsh, off) 56 #define READ4(off) bus_space_read_4(isc->bst, isc->bsh, off) 57 #define WRITE4(off,v) bus_space_write_4(isc->bst, isc->bsh, off, v) 58 59 #define CHIP_I810 0 /* i810/i815 */ 60 #define CHIP_I830 1 /* 830M/845G */ 61 #define CHIP_I855 2 /* 852GM/855GM/865G */ 62 #define CHIP_I915 3 /* 915G/915GM/945G/945GM/945GME */ 63 #define CHIP_I965 4 /* 965Q/965PM */ 64 #define CHIP_G33 5 /* G33/Q33/Q35 */ 65 #define CHIP_G4X 6 /* G45/Q45 */ 66 67 struct agp_i810_softc { 68 u_int32_t initial_aperture; /* aperture size at startup */ 69 struct agp_gatt *gatt; 70 int chiptype; /* i810-like or i830 */ 71 u_int32_t dcache_size; /* i810 only */ 72 u_int32_t stolen; /* number of i830/845 gtt entries 73 for stolen memory */ 74 bus_space_tag_t bst; /* register bus_space tag */ 75 bus_space_handle_t bsh; /* register bus_space handle */ 76 bus_space_tag_t gtt_bst; /* GTT bus_space tag */ 77 bus_space_handle_t gtt_bsh; /* GTT bus_space handle */ 78 struct pci_attach_args vga_pa; 79 80 u_int32_t pgtblctl; 81 }; 82 83 /* XXX hack, see below */ 84 static bus_addr_t agp_i810_vga_regbase; 85 static bus_space_handle_t agp_i810_vga_bsh; 86 87 static u_int32_t agp_i810_get_aperture(struct agp_softc *); 88 static int agp_i810_set_aperture(struct agp_softc *, u_int32_t); 89 static int agp_i810_bind_page(struct agp_softc *, off_t, bus_addr_t); 90 static int agp_i810_unbind_page(struct agp_softc *, off_t); 91 static void agp_i810_flush_tlb(struct agp_softc *); 92 static int agp_i810_enable(struct agp_softc *, u_int32_t mode); 93 static struct agp_memory *agp_i810_alloc_memory(struct agp_softc *, int, 94 vsize_t); 95 static int agp_i810_free_memory(struct agp_softc *, struct agp_memory *); 96 static int agp_i810_bind_memory(struct agp_softc *, struct agp_memory *, off_t); 97 static int agp_i810_unbind_memory(struct agp_softc *, struct agp_memory *); 98 99 static bool agp_i810_resume(device_t, const pmf_qual_t *); 100 static int agp_i810_init(struct agp_softc *); 101 102 static int agp_i810_init(struct agp_softc *); 103 static int agp_i810_write_gtt_entry(struct agp_i810_softc *, off_t, 104 bus_addr_t); 105 106 static struct agp_methods agp_i810_methods = { 107 agp_i810_get_aperture, 108 agp_i810_set_aperture, 109 agp_i810_bind_page, 110 agp_i810_unbind_page, 111 agp_i810_flush_tlb, 112 agp_i810_enable, 113 agp_i810_alloc_memory, 114 agp_i810_free_memory, 115 agp_i810_bind_memory, 116 agp_i810_unbind_memory, 117 }; 118 119 static int 120 agp_i810_write_gtt_entry(struct agp_i810_softc *isc, off_t off, bus_addr_t v) 121 { 122 u_int32_t pte; 123 bus_size_t base_off, wroff; 124 125 /* Bits 11:4 (physical start address extension) should be zero. */ 126 if ((v & 0xff0) != 0) 127 return EINVAL; 128 129 pte = (u_int32_t)v; 130 /* 131 * We need to massage the pte if bus_addr_t is wider than 32 bits. 132 * The compiler isn't smart enough, hence the casts to uintmax_t. 133 */ 134 if (sizeof(bus_addr_t) > sizeof(u_int32_t)) { 135 /* 965+ can do 36-bit addressing, add in the extra bits. */ 136 if (isc->chiptype == CHIP_I965 || 137 isc->chiptype == CHIP_G33 || 138 isc->chiptype == CHIP_G4X) { 139 if (((uintmax_t)v >> 36) != 0) 140 return EINVAL; 141 pte |= (v >> 28) & 0xf0; 142 } else { 143 if (((uintmax_t)v >> 32) != 0) 144 return EINVAL; 145 } 146 } 147 148 base_off = 0; 149 wroff = (off >> AGP_PAGE_SHIFT) * 4; 150 151 switch (isc->chiptype) { 152 case CHIP_I810: 153 case CHIP_I830: 154 case CHIP_I855: 155 base_off = AGP_I810_GTT; 156 break; 157 case CHIP_I965: 158 base_off = AGP_I965_GTT; 159 break; 160 case CHIP_G4X: 161 base_off = AGP_G4X_GTT; 162 break; 163 case CHIP_I915: 164 case CHIP_G33: 165 bus_space_write_4(isc->gtt_bst, isc->gtt_bsh, wroff, pte); 166 return 0; 167 } 168 169 WRITE4(base_off + wroff, pte); 170 return 0; 171 } 172 173 /* XXXthorpej -- duplicated code (see arch/x86/pci/pchb.c) */ 174 static int 175 agp_i810_vgamatch(const struct pci_attach_args *pa) 176 { 177 178 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY || 179 PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_DISPLAY_VGA) 180 return (0); 181 182 switch (PCI_PRODUCT(pa->pa_id)) { 183 case PCI_PRODUCT_INTEL_82810_GC: 184 case PCI_PRODUCT_INTEL_82810_DC100_GC: 185 case PCI_PRODUCT_INTEL_82810E_GC: 186 case PCI_PRODUCT_INTEL_82815_FULL_GRAPH: 187 case PCI_PRODUCT_INTEL_82830MP_IV: 188 case PCI_PRODUCT_INTEL_82845G_IGD: 189 case PCI_PRODUCT_INTEL_82855GM_IGD: 190 case PCI_PRODUCT_INTEL_82865_IGD: 191 case PCI_PRODUCT_INTEL_82915G_IGD: 192 case PCI_PRODUCT_INTEL_82915GM_IGD: 193 case PCI_PRODUCT_INTEL_82945P_IGD: 194 case PCI_PRODUCT_INTEL_82945GM_IGD: 195 case PCI_PRODUCT_INTEL_82945GM_IGD_1: 196 case PCI_PRODUCT_INTEL_82945GME_IGD: 197 case PCI_PRODUCT_INTEL_E7221_IGD: 198 case PCI_PRODUCT_INTEL_82965Q_IGD: 199 case PCI_PRODUCT_INTEL_82965Q_IGD_1: 200 case PCI_PRODUCT_INTEL_82965PM_IGD: 201 case PCI_PRODUCT_INTEL_82965PM_IGD_1: 202 case PCI_PRODUCT_INTEL_82G33_IGD: 203 case PCI_PRODUCT_INTEL_82G33_IGD_1: 204 case PCI_PRODUCT_INTEL_82965G_IGD: 205 case PCI_PRODUCT_INTEL_82965G_IGD_1: 206 case PCI_PRODUCT_INTEL_82965GME_IGD: 207 case PCI_PRODUCT_INTEL_82Q35_IGD: 208 case PCI_PRODUCT_INTEL_82Q35_IGD_1: 209 case PCI_PRODUCT_INTEL_82Q33_IGD: 210 case PCI_PRODUCT_INTEL_82Q33_IGD_1: 211 case PCI_PRODUCT_INTEL_82G35_IGD: 212 case PCI_PRODUCT_INTEL_82G35_IGD_1: 213 case PCI_PRODUCT_INTEL_82946GZ_IGD: 214 case PCI_PRODUCT_INTEL_82GM45_IGD: 215 case PCI_PRODUCT_INTEL_82GM45_IGD_1: 216 case PCI_PRODUCT_INTEL_82IGD_E_IGD: 217 case PCI_PRODUCT_INTEL_82Q45_IGD: 218 case PCI_PRODUCT_INTEL_82G45_IGD: 219 case PCI_PRODUCT_INTEL_82G41_IGD: 220 case PCI_PRODUCT_INTEL_82B43_IGD: 221 case PCI_PRODUCT_INTEL_IRONLAKE_D_IGD: 222 case PCI_PRODUCT_INTEL_IRONLAKE_M_IGD: 223 case PCI_PRODUCT_INTEL_PINEVIEW_IGD: 224 case PCI_PRODUCT_INTEL_PINEVIEW_M_IGD: 225 return (1); 226 } 227 228 return (0); 229 } 230 231 static int 232 agp_i965_map_aperture(struct pci_attach_args *pa, struct agp_softc *sc, int reg) 233 { 234 /* 235 * Find the aperture. Don't map it (yet), this would 236 * eat KVA. 237 */ 238 if (pci_mapreg_info(pa->pa_pc, pa->pa_tag, reg, 239 PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_64BIT, &sc->as_apaddr, &sc->as_apsize, 240 &sc->as_apflags) != 0) 241 return ENXIO; 242 243 sc->as_apt = pa->pa_memt; 244 245 return 0; 246 } 247 248 int 249 agp_i810_attach(device_t parent, device_t self, void *aux) 250 { 251 struct agp_softc *sc = device_private(self); 252 struct agp_i810_softc *isc; 253 struct agp_gatt *gatt; 254 int error, apbase; 255 bus_addr_t mmadr; 256 bus_size_t mmadrsize; 257 258 isc = malloc(sizeof *isc, M_AGP, M_NOWAIT|M_ZERO); 259 if (isc == NULL) { 260 aprint_error(": can't allocate chipset-specific softc\n"); 261 return ENOMEM; 262 } 263 sc->as_chipc = isc; 264 sc->as_methods = &agp_i810_methods; 265 266 if (pci_find_device(&isc->vga_pa, agp_i810_vgamatch) == 0) { 267 #if NAGP_INTEL > 0 268 const struct pci_attach_args *pa = aux; 269 270 switch (PCI_PRODUCT(pa->pa_id)) { 271 case PCI_PRODUCT_INTEL_82840_HB: 272 case PCI_PRODUCT_INTEL_82865_HB: 273 case PCI_PRODUCT_INTEL_82845G_DRAM: 274 case PCI_PRODUCT_INTEL_82815_FULL_HUB: 275 case PCI_PRODUCT_INTEL_82855GM_MCH: 276 return agp_intel_attach(parent, self, aux); 277 } 278 #endif 279 aprint_error(": can't find internal VGA device config space\n"); 280 free(isc, M_AGP); 281 return ENOENT; 282 } 283 284 /* XXXfvdl */ 285 sc->as_dmat = isc->vga_pa.pa_dmat; 286 287 switch (PCI_PRODUCT(isc->vga_pa.pa_id)) { 288 case PCI_PRODUCT_INTEL_82810_GC: 289 case PCI_PRODUCT_INTEL_82810_DC100_GC: 290 case PCI_PRODUCT_INTEL_82810E_GC: 291 case PCI_PRODUCT_INTEL_82815_FULL_GRAPH: 292 isc->chiptype = CHIP_I810; 293 break; 294 case PCI_PRODUCT_INTEL_82830MP_IV: 295 case PCI_PRODUCT_INTEL_82845G_IGD: 296 isc->chiptype = CHIP_I830; 297 break; 298 case PCI_PRODUCT_INTEL_82855GM_IGD: 299 case PCI_PRODUCT_INTEL_82865_IGD: 300 isc->chiptype = CHIP_I855; 301 break; 302 case PCI_PRODUCT_INTEL_82915G_IGD: 303 case PCI_PRODUCT_INTEL_82915GM_IGD: 304 case PCI_PRODUCT_INTEL_82945P_IGD: 305 case PCI_PRODUCT_INTEL_82945GM_IGD: 306 case PCI_PRODUCT_INTEL_82945GM_IGD_1: 307 case PCI_PRODUCT_INTEL_82945GME_IGD: 308 case PCI_PRODUCT_INTEL_E7221_IGD: 309 case PCI_PRODUCT_INTEL_PINEVIEW_IGD: 310 case PCI_PRODUCT_INTEL_PINEVIEW_M_IGD: 311 isc->chiptype = CHIP_I915; 312 break; 313 case PCI_PRODUCT_INTEL_82965Q_IGD: 314 case PCI_PRODUCT_INTEL_82965Q_IGD_1: 315 case PCI_PRODUCT_INTEL_82965PM_IGD: 316 case PCI_PRODUCT_INTEL_82965PM_IGD_1: 317 case PCI_PRODUCT_INTEL_82965G_IGD: 318 case PCI_PRODUCT_INTEL_82965G_IGD_1: 319 case PCI_PRODUCT_INTEL_82965GME_IGD: 320 case PCI_PRODUCT_INTEL_82946GZ_IGD: 321 case PCI_PRODUCT_INTEL_82G35_IGD: 322 case PCI_PRODUCT_INTEL_82G35_IGD_1: 323 isc->chiptype = CHIP_I965; 324 break; 325 case PCI_PRODUCT_INTEL_82Q35_IGD: 326 case PCI_PRODUCT_INTEL_82Q35_IGD_1: 327 case PCI_PRODUCT_INTEL_82G33_IGD: 328 case PCI_PRODUCT_INTEL_82G33_IGD_1: 329 case PCI_PRODUCT_INTEL_82Q33_IGD: 330 case PCI_PRODUCT_INTEL_82Q33_IGD_1: 331 isc->chiptype = CHIP_G33; 332 break; 333 case PCI_PRODUCT_INTEL_82GM45_IGD: 334 case PCI_PRODUCT_INTEL_82GM45_IGD_1: 335 case PCI_PRODUCT_INTEL_82IGD_E_IGD: 336 case PCI_PRODUCT_INTEL_82Q45_IGD: 337 case PCI_PRODUCT_INTEL_82G45_IGD: 338 case PCI_PRODUCT_INTEL_82G41_IGD: 339 case PCI_PRODUCT_INTEL_82B43_IGD: 340 case PCI_PRODUCT_INTEL_IRONLAKE_D_IGD: 341 case PCI_PRODUCT_INTEL_IRONLAKE_M_IGD: 342 isc->chiptype = CHIP_G4X; 343 break; 344 } 345 346 switch (isc->chiptype) { 347 case CHIP_I915: 348 case CHIP_G33: 349 apbase = AGP_I915_GMADR; 350 break; 351 case CHIP_I965: 352 case CHIP_G4X: 353 apbase = AGP_I965_GMADR; 354 break; 355 default: 356 apbase = AGP_I810_GMADR; 357 break; 358 } 359 360 if (isc->chiptype == CHIP_I965 || isc->chiptype == CHIP_G4X) { 361 error = agp_i965_map_aperture(&isc->vga_pa, sc, apbase); 362 } else { 363 error = agp_map_aperture(&isc->vga_pa, sc, apbase); 364 } 365 if (error != 0) { 366 aprint_error(": can't map aperture\n"); 367 free(isc, M_AGP); 368 return error; 369 } 370 371 if (isc->chiptype == CHIP_I915 || isc->chiptype == CHIP_G33) { 372 error = pci_mapreg_map(&isc->vga_pa, AGP_I915_MMADR, 373 PCI_MAPREG_TYPE_MEM, 0, &isc->bst, &isc->bsh, 374 &mmadr, &mmadrsize); 375 if (error != 0) { 376 aprint_error(": can't map mmadr registers\n"); 377 agp_generic_detach(sc); 378 return error; 379 } 380 error = pci_mapreg_map(&isc->vga_pa, AGP_I915_GTTADR, 381 PCI_MAPREG_TYPE_MEM, 0, &isc->gtt_bst, &isc->gtt_bsh, 382 NULL, NULL); 383 if (error != 0) { 384 aprint_error(": can't map gttadr registers\n"); 385 /* XXX we should release mmadr here */ 386 agp_generic_detach(sc); 387 return error; 388 } 389 } else if (isc->chiptype == CHIP_I965 || isc->chiptype == CHIP_G4X) { 390 error = pci_mapreg_map(&isc->vga_pa, AGP_I965_MMADR, 391 PCI_MAPREG_TYPE_MEM, 0, &isc->bst, &isc->bsh, 392 &mmadr, &mmadrsize); 393 if (error != 0) { 394 aprint_error(": can't map mmadr registers\n"); 395 agp_generic_detach(sc); 396 return error; 397 } 398 } else { 399 error = pci_mapreg_map(&isc->vga_pa, AGP_I810_MMADR, 400 PCI_MAPREG_TYPE_MEM, 0, &isc->bst, &isc->bsh, 401 &mmadr, &mmadrsize); 402 if (error != 0) { 403 aprint_error(": can't map mmadr registers\n"); 404 agp_generic_detach(sc); 405 return error; 406 } 407 } 408 409 isc->initial_aperture = AGP_GET_APERTURE(sc); 410 411 gatt = malloc(sizeof(struct agp_gatt), M_AGP, M_NOWAIT); 412 if (!gatt) { 413 agp_generic_detach(sc); 414 return ENOMEM; 415 } 416 isc->gatt = gatt; 417 418 gatt->ag_entries = AGP_GET_APERTURE(sc) >> AGP_PAGE_SHIFT; 419 420 if (!pmf_device_register(self, NULL, agp_i810_resume)) 421 aprint_error_dev(self, "couldn't establish power handler\n"); 422 423 /* 424 * XXX horrible hack to allow drm code to use our mapping 425 * of VGA chip registers 426 */ 427 agp_i810_vga_regbase = mmadr; 428 agp_i810_vga_bsh = isc->bsh; 429 430 return agp_i810_init(sc); 431 } 432 433 /* 434 * XXX horrible hack to allow drm code to use our mapping 435 * of VGA chip registers 436 */ 437 int 438 agp_i810_borrow(bus_addr_t base, bus_space_handle_t *hdlp) 439 { 440 441 if (!agp_i810_vga_regbase || base != agp_i810_vga_regbase) 442 return 0; 443 *hdlp = agp_i810_vga_bsh; 444 return 1; 445 } 446 447 static int agp_i810_init(struct agp_softc *sc) 448 { 449 struct agp_i810_softc *isc; 450 struct agp_gatt *gatt; 451 452 isc = sc->as_chipc; 453 gatt = isc->gatt; 454 455 if (isc->chiptype == CHIP_I810) { 456 void *virtual; 457 int dummyseg; 458 459 /* Some i810s have on-chip memory called dcache */ 460 if (READ1(AGP_I810_DRT) & AGP_I810_DRT_POPULATED) 461 isc->dcache_size = 4 * 1024 * 1024; 462 else 463 isc->dcache_size = 0; 464 465 /* According to the specs the gatt on the i810 must be 64k */ 466 if (agp_alloc_dmamem(sc->as_dmat, 64 * 1024, 467 0, &gatt->ag_dmamap, &virtual, &gatt->ag_physical, 468 &gatt->ag_dmaseg, 1, &dummyseg) != 0) { 469 free(gatt, M_AGP); 470 agp_generic_detach(sc); 471 return ENOMEM; 472 } 473 gatt->ag_virtual = (uint32_t *)virtual; 474 gatt->ag_size = gatt->ag_entries * sizeof(u_int32_t); 475 memset(gatt->ag_virtual, 0, gatt->ag_size); 476 477 agp_flush_cache(); 478 /* Install the GATT. */ 479 WRITE4(AGP_I810_PGTBL_CTL, gatt->ag_physical | 1); 480 } else if (isc->chiptype == CHIP_I830) { 481 /* The i830 automatically initializes the 128k gatt on boot. */ 482 pcireg_t reg; 483 u_int32_t pgtblctl; 484 u_int16_t gcc1; 485 486 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0); 487 gcc1 = (u_int16_t)(reg >> 16); 488 switch (gcc1 & AGP_I830_GCC1_GMS) { 489 case AGP_I830_GCC1_GMS_STOLEN_512: 490 isc->stolen = (512 - 132) * 1024 / 4096; 491 break; 492 case AGP_I830_GCC1_GMS_STOLEN_1024: 493 isc->stolen = (1024 - 132) * 1024 / 4096; 494 break; 495 case AGP_I830_GCC1_GMS_STOLEN_8192: 496 isc->stolen = (8192 - 132) * 1024 / 4096; 497 break; 498 default: 499 isc->stolen = 0; 500 aprint_error( 501 ": unknown memory configuration, disabling\n"); 502 agp_generic_detach(sc); 503 return EINVAL; 504 } 505 506 if (isc->stolen > 0) { 507 aprint_normal(": detected %dk stolen memory\n%s", 508 isc->stolen * 4, device_xname(sc->as_dev)); 509 } 510 511 /* GATT address is already in there, make sure it's enabled */ 512 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 513 pgtblctl |= 1; 514 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 515 516 gatt->ag_physical = pgtblctl & ~1; 517 } else if (isc->chiptype == CHIP_I855 || isc->chiptype == CHIP_I915 || 518 isc->chiptype == CHIP_I965 || isc->chiptype == CHIP_G33 || 519 isc->chiptype == CHIP_G4X) { 520 pcireg_t reg; 521 u_int32_t pgtblctl, gtt_size, stolen; 522 u_int16_t gcc1; 523 524 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I855_GCC1); 525 gcc1 = (u_int16_t)(reg >> 16); 526 527 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 528 529 /* Stolen memory is set up at the beginning of the aperture by 530 * the BIOS, consisting of the GATT followed by 4kb for the 531 * BIOS display. 532 */ 533 switch (isc->chiptype) { 534 case CHIP_I855: 535 gtt_size = 128; 536 break; 537 case CHIP_I915: 538 gtt_size = 256; 539 break; 540 case CHIP_I965: 541 switch (pgtblctl & AGP_I810_PGTBL_SIZE_MASK) { 542 case AGP_I810_PGTBL_SIZE_128KB: 543 case AGP_I810_PGTBL_SIZE_512KB: 544 gtt_size = 512; 545 break; 546 case AGP_I965_PGTBL_SIZE_1MB: 547 gtt_size = 1024; 548 break; 549 case AGP_I965_PGTBL_SIZE_2MB: 550 gtt_size = 2048; 551 break; 552 case AGP_I965_PGTBL_SIZE_1_5MB: 553 gtt_size = 1024 + 512; 554 break; 555 default: 556 aprint_error("Bad PGTBL size\n"); 557 agp_generic_detach(sc); 558 return EINVAL; 559 } 560 break; 561 case CHIP_G33: 562 switch (gcc1 & AGP_G33_PGTBL_SIZE_MASK) { 563 case AGP_G33_PGTBL_SIZE_1M: 564 gtt_size = 1024; 565 break; 566 case AGP_G33_PGTBL_SIZE_2M: 567 gtt_size = 2048; 568 break; 569 default: 570 aprint_error(": Bad PGTBL size\n"); 571 agp_generic_detach(sc); 572 return EINVAL; 573 } 574 break; 575 case CHIP_G4X: 576 gtt_size = 0; 577 break; 578 default: 579 aprint_error(": bad chiptype\n"); 580 agp_generic_detach(sc); 581 return EINVAL; 582 } 583 584 switch (gcc1 & AGP_I855_GCC1_GMS) { 585 case AGP_I855_GCC1_GMS_STOLEN_1M: 586 stolen = 1024; 587 break; 588 case AGP_I855_GCC1_GMS_STOLEN_4M: 589 stolen = 4 * 1024; 590 break; 591 case AGP_I855_GCC1_GMS_STOLEN_8M: 592 stolen = 8 * 1024; 593 break; 594 case AGP_I855_GCC1_GMS_STOLEN_16M: 595 stolen = 16 * 1024; 596 break; 597 case AGP_I855_GCC1_GMS_STOLEN_32M: 598 stolen = 32 * 1024; 599 break; 600 case AGP_I915_GCC1_GMS_STOLEN_48M: 601 stolen = 48 * 1024; 602 break; 603 case AGP_I915_GCC1_GMS_STOLEN_64M: 604 stolen = 64 * 1024; 605 break; 606 case AGP_G33_GCC1_GMS_STOLEN_128M: 607 stolen = 128 * 1024; 608 break; 609 case AGP_G33_GCC1_GMS_STOLEN_256M: 610 stolen = 256 * 1024; 611 break; 612 case AGP_G4X_GCC1_GMS_STOLEN_96M: 613 stolen = 96 * 1024; 614 break; 615 case AGP_G4X_GCC1_GMS_STOLEN_160M: 616 stolen = 160 * 1024; 617 break; 618 case AGP_G4X_GCC1_GMS_STOLEN_224M: 619 stolen = 224 * 1024; 620 break; 621 case AGP_G4X_GCC1_GMS_STOLEN_352M: 622 stolen = 352 * 1024; 623 break; 624 default: 625 aprint_error( 626 ": unknown memory configuration, disabling\n"); 627 agp_generic_detach(sc); 628 return EINVAL; 629 } 630 631 switch (gcc1 & AGP_I855_GCC1_GMS) { 632 case AGP_I915_GCC1_GMS_STOLEN_48M: 633 case AGP_I915_GCC1_GMS_STOLEN_64M: 634 if (isc->chiptype != CHIP_I915 && 635 isc->chiptype != CHIP_I965 && 636 isc->chiptype != CHIP_G33 && 637 isc->chiptype != CHIP_G4X) 638 stolen = 0; 639 break; 640 case AGP_G33_GCC1_GMS_STOLEN_128M: 641 case AGP_G33_GCC1_GMS_STOLEN_256M: 642 if (isc->chiptype != CHIP_I965 && 643 isc->chiptype != CHIP_G33 && 644 isc->chiptype != CHIP_G4X) 645 stolen = 0; 646 break; 647 case AGP_G4X_GCC1_GMS_STOLEN_96M: 648 case AGP_G4X_GCC1_GMS_STOLEN_160M: 649 case AGP_G4X_GCC1_GMS_STOLEN_224M: 650 case AGP_G4X_GCC1_GMS_STOLEN_352M: 651 if (isc->chiptype != CHIP_I965 && 652 isc->chiptype != CHIP_G4X) 653 stolen = 0; 654 break; 655 } 656 657 /* BIOS space */ 658 gtt_size += 4; 659 660 isc->stolen = (stolen - gtt_size) * 1024 / 4096; 661 662 if (isc->stolen > 0) { 663 aprint_normal(": detected %dk stolen memory\n%s", 664 isc->stolen * 4, device_xname(sc->as_dev)); 665 } 666 667 /* GATT address is already in there, make sure it's enabled */ 668 pgtblctl |= 1; 669 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 670 671 gatt->ag_physical = pgtblctl & ~1; 672 } 673 674 /* 675 * Make sure the chipset can see everything. 676 */ 677 agp_flush_cache(); 678 679 return 0; 680 } 681 682 #if 0 683 static int 684 agp_i810_detach(struct agp_softc *sc) 685 { 686 int error; 687 struct agp_i810_softc *isc = sc->as_chipc; 688 689 error = agp_generic_detach(sc); 690 if (error) 691 return error; 692 693 /* Clear the GATT base. */ 694 if (sc->chiptype == CHIP_I810) { 695 WRITE4(AGP_I810_PGTBL_CTL, 0); 696 } else { 697 unsigned int pgtblctl; 698 pgtblctl = READ4(AGP_I810_PGTBL_CTL); 699 pgtblctl &= ~1; 700 WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); 701 } 702 703 /* Put the aperture back the way it started. */ 704 AGP_SET_APERTURE(sc, isc->initial_aperture); 705 706 if (sc->chiptype == CHIP_I810) { 707 agp_free_dmamem(sc->as_dmat, gatt->ag_size, gatt->ag_dmamap, 708 (void *)gatt->ag_virtual, &gatt->ag_dmaseg, 1); 709 } 710 free(sc->gatt, M_AGP); 711 712 return 0; 713 } 714 #endif 715 716 static u_int32_t 717 agp_i810_get_aperture(struct agp_softc *sc) 718 { 719 struct agp_i810_softc *isc = sc->as_chipc; 720 pcireg_t reg; 721 u_int32_t size; 722 u_int16_t miscc, gcc1, msac; 723 724 size = 0; 725 726 switch (isc->chiptype) { 727 case CHIP_I810: 728 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I810_SMRAM); 729 miscc = (u_int16_t)(reg >> 16); 730 if ((miscc & AGP_I810_MISCC_WINSIZE) == 731 AGP_I810_MISCC_WINSIZE_32) 732 size = 32 * 1024 * 1024; 733 else 734 size = 64 * 1024 * 1024; 735 break; 736 case CHIP_I830: 737 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0); 738 gcc1 = (u_int16_t)(reg >> 16); 739 if ((gcc1 & AGP_I830_GCC1_GMASIZE) == AGP_I830_GCC1_GMASIZE_64) 740 size = 64 * 1024 * 1024; 741 else 742 size = 128 * 1024 * 1024; 743 break; 744 case CHIP_I855: 745 size = 128 * 1024 * 1024; 746 break; 747 case CHIP_I915: 748 case CHIP_G33: 749 case CHIP_G4X: 750 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I915_MSAC); 751 msac = (u_int16_t)(reg >> 16); 752 if (msac & AGP_I915_MSAC_APER_128M) 753 size = 128 * 1024 * 1024; 754 else 755 size = 256 * 1024 * 1024; 756 break; 757 case CHIP_I965: 758 size = 512 * 1024 * 1024; 759 break; 760 default: 761 aprint_error(": Unknown chipset\n"); 762 } 763 764 return size; 765 } 766 767 static int 768 agp_i810_set_aperture(struct agp_softc *sc, u_int32_t aperture) 769 { 770 struct agp_i810_softc *isc = sc->as_chipc; 771 pcireg_t reg; 772 u_int16_t miscc, gcc1; 773 774 switch (isc->chiptype) { 775 case CHIP_I810: 776 /* 777 * Double check for sanity. 778 */ 779 if (aperture != (32 * 1024 * 1024) && 780 aperture != (64 * 1024 * 1024)) { 781 aprint_error_dev(sc->as_dev, "bad aperture size %d\n", 782 aperture); 783 return EINVAL; 784 } 785 786 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I810_SMRAM); 787 miscc = (u_int16_t)(reg >> 16); 788 miscc &= ~AGP_I810_MISCC_WINSIZE; 789 if (aperture == 32 * 1024 * 1024) 790 miscc |= AGP_I810_MISCC_WINSIZE_32; 791 else 792 miscc |= AGP_I810_MISCC_WINSIZE_64; 793 794 reg &= 0x0000ffff; 795 reg |= ((pcireg_t)miscc) << 16; 796 pci_conf_write(sc->as_pc, sc->as_tag, AGP_I810_SMRAM, reg); 797 break; 798 case CHIP_I830: 799 if (aperture != (64 * 1024 * 1024) && 800 aperture != (128 * 1024 * 1024)) { 801 aprint_error_dev(sc->as_dev, "bad aperture size %d\n", 802 aperture); 803 return EINVAL; 804 } 805 reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_I830_GCC0); 806 gcc1 = (u_int16_t)(reg >> 16); 807 gcc1 &= ~AGP_I830_GCC1_GMASIZE; 808 if (aperture == 64 * 1024 * 1024) 809 gcc1 |= AGP_I830_GCC1_GMASIZE_64; 810 else 811 gcc1 |= AGP_I830_GCC1_GMASIZE_128; 812 813 reg &= 0x0000ffff; 814 reg |= ((pcireg_t)gcc1) << 16; 815 pci_conf_write(sc->as_pc, sc->as_tag, AGP_I830_GCC0, reg); 816 break; 817 case CHIP_I855: 818 case CHIP_I915: 819 if (aperture != agp_i810_get_aperture(sc)) { 820 aprint_error_dev(sc->as_dev, "bad aperture size %d\n", 821 aperture); 822 return EINVAL; 823 } 824 break; 825 case CHIP_I965: 826 if (aperture != 512 * 1024 * 1024) { 827 aprint_error_dev(sc->as_dev, "bad aperture size %d\n", 828 aperture); 829 return EINVAL; 830 } 831 break; 832 } 833 834 return 0; 835 } 836 837 static int 838 agp_i810_bind_page(struct agp_softc *sc, off_t offset, bus_addr_t physical) 839 { 840 struct agp_i810_softc *isc = sc->as_chipc; 841 842 if (offset < 0 || offset >= (isc->gatt->ag_entries << AGP_PAGE_SHIFT)) { 843 #ifdef AGP_DEBUG 844 printf("%s: failed: offset 0x%08x, shift %d, entries %d\n", 845 device_xname(sc->as_dev), (int)offset, AGP_PAGE_SHIFT, 846 isc->gatt->ag_entries); 847 #endif 848 return EINVAL; 849 } 850 851 if (isc->chiptype != CHIP_I810) { 852 if ((offset >> AGP_PAGE_SHIFT) < isc->stolen) { 853 #ifdef AGP_DEBUG 854 printf("%s: trying to bind into stolen memory\n", 855 device_xname(sc->as_dev)); 856 #endif 857 return EINVAL; 858 } 859 } 860 861 return agp_i810_write_gtt_entry(isc, offset, physical | 1); 862 } 863 864 static int 865 agp_i810_unbind_page(struct agp_softc *sc, off_t offset) 866 { 867 struct agp_i810_softc *isc = sc->as_chipc; 868 869 if (offset < 0 || offset >= (isc->gatt->ag_entries << AGP_PAGE_SHIFT)) 870 return EINVAL; 871 872 if (isc->chiptype != CHIP_I810 ) { 873 if ((offset >> AGP_PAGE_SHIFT) < isc->stolen) { 874 #ifdef AGP_DEBUG 875 printf("%s: trying to unbind from stolen memory\n", 876 device_xname(sc->as_dev)); 877 #endif 878 return EINVAL; 879 } 880 } 881 882 return agp_i810_write_gtt_entry(isc, offset, 0); 883 } 884 885 /* 886 * Writing via memory mapped registers already flushes all TLBs. 887 */ 888 static void 889 agp_i810_flush_tlb(struct agp_softc *sc) 890 { 891 } 892 893 static int 894 agp_i810_enable(struct agp_softc *sc, u_int32_t mode) 895 { 896 897 return 0; 898 } 899 900 static struct agp_memory * 901 agp_i810_alloc_memory(struct agp_softc *sc, int type, vsize_t size) 902 { 903 struct agp_i810_softc *isc = sc->as_chipc; 904 struct agp_memory *mem; 905 906 #ifdef AGP_DEBUG 907 printf("AGP: alloc(%d, 0x%x)\n", type, (int) size); 908 #endif 909 910 if ((size & (AGP_PAGE_SIZE - 1)) != 0) 911 return 0; 912 913 if (sc->as_allocated + size > sc->as_maxmem) 914 return 0; 915 916 if (type == 1) { 917 /* 918 * Mapping local DRAM into GATT. 919 */ 920 if (isc->chiptype != CHIP_I810 ) 921 return 0; 922 if (size != isc->dcache_size) 923 return 0; 924 } else if (type == 2) { 925 /* 926 * Bogus mapping for the hardware cursor. 927 */ 928 if (size != AGP_PAGE_SIZE && size != 4 * AGP_PAGE_SIZE) 929 return 0; 930 } 931 932 mem = malloc(sizeof *mem, M_AGP, M_WAITOK|M_ZERO); 933 if (mem == NULL) 934 return NULL; 935 mem->am_id = sc->as_nextid++; 936 mem->am_size = size; 937 mem->am_type = type; 938 939 if (type == 2) { 940 /* 941 * Allocate and wire down the memory now so that we can 942 * get its physical address. 943 */ 944 mem->am_dmaseg = malloc(sizeof *mem->am_dmaseg, M_AGP, 945 M_WAITOK); 946 if (mem->am_dmaseg == NULL) { 947 free(mem, M_AGP); 948 return NULL; 949 } 950 if (agp_alloc_dmamem(sc->as_dmat, size, 0, 951 &mem->am_dmamap, &mem->am_virtual, &mem->am_physical, 952 mem->am_dmaseg, 1, &mem->am_nseg) != 0) { 953 free(mem->am_dmaseg, M_AGP); 954 free(mem, M_AGP); 955 return NULL; 956 } 957 memset(mem->am_virtual, 0, size); 958 } else if (type != 1) { 959 if (bus_dmamap_create(sc->as_dmat, size, size / PAGE_SIZE + 1, 960 size, 0, BUS_DMA_NOWAIT, 961 &mem->am_dmamap) != 0) { 962 free(mem, M_AGP); 963 return NULL; 964 } 965 } 966 967 TAILQ_INSERT_TAIL(&sc->as_memory, mem, am_link); 968 sc->as_allocated += size; 969 970 return mem; 971 } 972 973 static int 974 agp_i810_free_memory(struct agp_softc *sc, struct agp_memory *mem) 975 { 976 if (mem->am_is_bound) 977 return EBUSY; 978 979 if (mem->am_type == 2) { 980 agp_free_dmamem(sc->as_dmat, mem->am_size, mem->am_dmamap, 981 mem->am_virtual, mem->am_dmaseg, mem->am_nseg); 982 free(mem->am_dmaseg, M_AGP); 983 } 984 985 sc->as_allocated -= mem->am_size; 986 TAILQ_REMOVE(&sc->as_memory, mem, am_link); 987 free(mem, M_AGP); 988 return 0; 989 } 990 991 static int 992 agp_i810_bind_memory(struct agp_softc *sc, struct agp_memory *mem, 993 off_t offset) 994 { 995 struct agp_i810_softc *isc = sc->as_chipc; 996 u_int32_t regval, i; 997 998 if (mem->am_is_bound != 0) 999 return EINVAL; 1000 1001 /* 1002 * XXX evil hack: the PGTBL_CTL appearently gets overwritten by the 1003 * X server for mysterious reasons which leads to crashes if we write 1004 * to the GTT through the MMIO window. 1005 * Until the issue is solved, simply restore it. 1006 */ 1007 regval = bus_space_read_4(isc->bst, isc->bsh, AGP_I810_PGTBL_CTL); 1008 if (regval != (isc->gatt->ag_physical | 1)) { 1009 printf("agp_i810_bind_memory: PGTBL_CTL is 0x%x - fixing\n", 1010 regval); 1011 bus_space_write_4(isc->bst, isc->bsh, AGP_I810_PGTBL_CTL, 1012 isc->gatt->ag_physical | 1); 1013 } 1014 1015 if (mem->am_type == 2) { 1016 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) 1017 agp_i810_bind_page(sc, offset + i, 1018 mem->am_physical + i); 1019 mem->am_offset = offset; 1020 mem->am_is_bound = 1; 1021 return 0; 1022 } 1023 1024 if (mem->am_type != 1) 1025 return agp_generic_bind_memory(sc, mem, offset); 1026 1027 if (isc->chiptype != CHIP_I810) 1028 return EINVAL; 1029 1030 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) 1031 agp_i810_write_gtt_entry(isc, i, i | 3); 1032 mem->am_is_bound = 1; 1033 return 0; 1034 } 1035 1036 static int 1037 agp_i810_unbind_memory(struct agp_softc *sc, struct agp_memory *mem) 1038 { 1039 struct agp_i810_softc *isc = sc->as_chipc; 1040 u_int32_t i; 1041 1042 if (mem->am_is_bound == 0) 1043 return EINVAL; 1044 1045 if (mem->am_type == 2) { 1046 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) 1047 agp_i810_unbind_page(sc, mem->am_offset + i); 1048 mem->am_offset = 0; 1049 mem->am_is_bound = 0; 1050 return 0; 1051 } 1052 1053 if (mem->am_type != 1) 1054 return agp_generic_unbind_memory(sc, mem); 1055 1056 if (isc->chiptype != CHIP_I810) 1057 return EINVAL; 1058 1059 for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) 1060 agp_i810_write_gtt_entry(isc, i, 0); 1061 mem->am_is_bound = 0; 1062 return 0; 1063 } 1064 1065 static bool 1066 agp_i810_resume(device_t dv, const pmf_qual_t *qual) 1067 { 1068 struct agp_softc *sc = device_private(dv); 1069 struct agp_i810_softc *isc = sc->as_chipc; 1070 1071 isc->pgtblctl = READ4(AGP_I810_PGTBL_CTL); 1072 agp_flush_cache(); 1073 1074 return true; 1075 } 1076