1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2005 John Baldwin <jhb@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 /* 32 * Simple driver for PCI VGA display devices. Drivers such as agp(4) and 33 * drm(4) should attach as children of this device. 34 * 35 * XXX: The vgapci name is a hack until we somehow merge the isa vga driver 36 * in or rename it. 37 */ 38 39 #include <sys/param.h> 40 #include <sys/bus.h> 41 #include <sys/kernel.h> 42 #include <sys/module.h> 43 #include <sys/rman.h> 44 #include <sys/sysctl.h> 45 #include <sys/systm.h> 46 47 #if defined(__amd64__) || defined(__i386__) 48 #include <vm/vm.h> 49 #include <vm/pmap.h> 50 #endif 51 52 #include <dev/pci/pcireg.h> 53 #include <dev/pci/pcivar.h> 54 55 #include <compat/x86bios/x86bios.h> /* To re-POST the card. */ 56 57 struct vga_resource { 58 struct resource *vr_res; 59 int vr_refs; 60 }; 61 62 struct vga_pci_softc { 63 device_t vga_msi_child; /* Child driver using MSI. */ 64 struct vga_resource vga_bars[PCIR_MAX_BAR_0 + 1]; 65 struct vga_resource vga_bios; 66 }; 67 68 SYSCTL_DECL(_hw_pci); 69 70 static struct vga_resource *lookup_res(struct vga_pci_softc *sc, int rid); 71 static struct resource *vga_pci_alloc_resource(device_t dev, device_t child, 72 int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count, 73 u_int flags); 74 static int vga_pci_release_resource(device_t dev, device_t child, int type, 75 int rid, struct resource *r); 76 77 int vga_pci_default_unit = -1; 78 SYSCTL_INT(_hw_pci, OID_AUTO, default_vgapci_unit, CTLFLAG_RDTUN, 79 &vga_pci_default_unit, -1, "Default VGA-compatible display"); 80 81 int 82 vga_pci_is_boot_display(device_t dev) 83 { 84 int unit; 85 device_t pcib; 86 uint16_t config; 87 88 /* Check that the given device is a video card */ 89 if ((pci_get_class(dev) != PCIC_DISPLAY && 90 (pci_get_class(dev) != PCIC_OLD || 91 pci_get_subclass(dev) != PCIS_OLD_VGA))) 92 return (0); 93 94 unit = device_get_unit(dev); 95 96 if (vga_pci_default_unit >= 0) { 97 /* 98 * The boot display device was determined by a previous 99 * call to this function, or the user forced it using 100 * the hw.pci.default_vgapci_unit tunable. 101 */ 102 return (vga_pci_default_unit == unit); 103 } 104 105 /* 106 * The primary video card used as a boot display must have the 107 * "I/O" and "Memory Address Space Decoding" bits set in its 108 * Command register. 109 * 110 * Furthermore, if the card is attached to a bridge, instead of 111 * the root PCI bus, the bridge must have the "VGA Enable" bit 112 * set in its Control register. 113 */ 114 115 pcib = device_get_parent(device_get_parent(dev)); 116 if (device_get_devclass(device_get_parent(pcib)) == 117 devclass_find("pci")) { 118 /* 119 * The parent bridge is a PCI-to-PCI bridge: check the 120 * value of the "VGA Enable" bit. 121 */ 122 config = pci_read_config(pcib, PCIR_BRIDGECTL_1, 2); 123 if ((config & PCIB_BCR_VGA_ENABLE) == 0) 124 return (0); 125 } 126 127 config = pci_read_config(dev, PCIR_COMMAND, 2); 128 if ((config & (PCIM_CMD_PORTEN | PCIM_CMD_MEMEN)) == 0) 129 return (0); 130 131 /* 132 * Disable interrupts until a chipset driver is loaded for 133 * this PCI device. Else unhandled display adapter interrupts 134 * might freeze the CPU. 135 */ 136 pci_write_config(dev, PCIR_COMMAND, config | PCIM_CMD_INTxDIS, 2); 137 138 /* This video card is the boot display: record its unit number. */ 139 vga_pci_default_unit = unit; 140 device_set_flags(dev, 1); 141 142 return (1); 143 } 144 145 static void 146 vga_pci_reset(device_t dev) 147 { 148 int ps; 149 /* 150 * FLR is unsupported on GPUs so attempt a power-management reset by cycling 151 * the device in/out of D3 state. 152 * PCI spec says we can only go into D3 state from D0 state. 153 * Transition from D[12] into D0 before going to D3 state. 154 */ 155 ps = pci_get_powerstate(dev); 156 if (ps != PCI_POWERSTATE_D0 && ps != PCI_POWERSTATE_D3) 157 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 158 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D3) 159 pci_set_powerstate(dev, PCI_POWERSTATE_D3); 160 pci_set_powerstate(dev, ps); 161 } 162 163 void * 164 vga_pci_map_bios(device_t dev, size_t *size) 165 { 166 struct vga_resource *vr; 167 struct resource *res; 168 device_t pcib; 169 uint32_t rom_addr; 170 uint16_t config; 171 volatile unsigned char *bios; 172 int i, rid, found; 173 174 #if defined(__amd64__) || defined(__i386__) 175 if (vga_pci_is_boot_display(dev)) { 176 /* 177 * On x86, the System BIOS copy the default display 178 * device's Video BIOS at a fixed location in system 179 * memory (0xC0000, 128 kBytes long) at boot time. 180 * 181 * We use this copy for the default boot device, because 182 * the original ROM may not be valid after boot. 183 */ 184 185 *size = VGA_PCI_BIOS_SHADOW_SIZE; 186 return (pmap_mapbios(VGA_PCI_BIOS_SHADOW_ADDR, *size)); 187 } 188 #endif 189 190 pcib = device_get_parent(device_get_parent(dev)); 191 if (device_get_devclass(device_get_parent(pcib)) == 192 devclass_find("pci")) { 193 /* 194 * The parent bridge is a PCI-to-PCI bridge: check the 195 * value of the "VGA Enable" bit. 196 */ 197 config = pci_read_config(pcib, PCIR_BRIDGECTL_1, 2); 198 if ((config & PCIB_BCR_VGA_ENABLE) == 0) { 199 config |= PCIB_BCR_VGA_ENABLE; 200 pci_write_config(pcib, PCIR_BRIDGECTL_1, config, 2); 201 } 202 } 203 204 switch(pci_read_config(dev, PCIR_HDRTYPE, 1)) { 205 case PCIM_HDRTYPE_BRIDGE: 206 rid = PCIR_BIOS_1; 207 break; 208 case PCIM_HDRTYPE_CARDBUS: 209 rid = 0; 210 break; 211 default: 212 rid = PCIR_BIOS; 213 break; 214 } 215 if (rid == 0) 216 return (NULL); 217 res = vga_pci_alloc_resource(dev, NULL, SYS_RES_MEMORY, &rid, 0, 218 ~0, 1, RF_ACTIVE); 219 220 if (res == NULL) { 221 device_printf(dev, "vga_pci_alloc_resource failed\n"); 222 return (NULL); 223 } 224 bios = rman_get_virtual(res); 225 *size = rman_get_size(res); 226 for (found = i = 0; i < hz; i++) { 227 found = (bios[0] == 0x55 && bios[1] == 0xaa); 228 if (found) 229 break; 230 pause("vgabios", 1); 231 } 232 if (found) 233 return (__DEVOLATILE(void *, bios)); 234 if (bootverbose) 235 device_printf(dev, "initial ROM mapping failed -- resetting\n"); 236 237 /* 238 * Enable ROM decode 239 */ 240 vga_pci_reset(dev); 241 rom_addr = pci_read_config(dev, rid, 4); 242 rom_addr &= 0x7ff; 243 rom_addr |= rman_get_start(res) | 0x1; 244 pci_write_config(dev, rid, rom_addr, 4); 245 vr = lookup_res(device_get_softc(dev), rid); 246 vga_pci_release_resource(dev, NULL, SYS_RES_MEMORY, rid, 247 vr->vr_res); 248 249 /* 250 * re-allocate 251 */ 252 res = vga_pci_alloc_resource(dev, NULL, SYS_RES_MEMORY, &rid, 0, 253 ~0, 1, RF_ACTIVE); 254 if (res == NULL) { 255 device_printf(dev, "vga_pci_alloc_resource failed\n"); 256 return (NULL); 257 } 258 bios = rman_get_virtual(res); 259 *size = rman_get_size(res); 260 for (found = i = 0; i < 3*hz; i++) { 261 found = (bios[0] == 0x55 && bios[1] == 0xaa); 262 if (found) 263 break; 264 pause("vgabios", 1); 265 } 266 if (found) 267 return (__DEVOLATILE(void *, bios)); 268 device_printf(dev, "ROM mapping failed\n"); 269 vr = lookup_res(device_get_softc(dev), rid); 270 vga_pci_release_resource(dev, NULL, SYS_RES_MEMORY, rid, 271 vr->vr_res); 272 return (NULL); 273 } 274 275 void 276 vga_pci_unmap_bios(device_t dev, void *bios) 277 { 278 struct vga_resource *vr; 279 int rid; 280 281 if (bios == NULL) { 282 return; 283 } 284 285 #if defined(__amd64__) || defined(__i386__) 286 if (vga_pci_is_boot_display(dev)) { 287 /* We mapped the BIOS shadow copy located at 0xC0000. */ 288 pmap_unmapdev(bios, VGA_PCI_BIOS_SHADOW_SIZE); 289 290 return; 291 } 292 #endif 293 switch(pci_read_config(dev, PCIR_HDRTYPE, 1)) { 294 case PCIM_HDRTYPE_BRIDGE: 295 rid = PCIR_BIOS_1; 296 break; 297 case PCIM_HDRTYPE_CARDBUS: 298 rid = 0; 299 break; 300 default: 301 rid = PCIR_BIOS; 302 break; 303 } 304 if (rid == 0) 305 return; 306 /* 307 * Look up the PCIR_BIOS resource in our softc. It should match 308 * the address we returned previously. 309 */ 310 vr = lookup_res(device_get_softc(dev), rid); 311 KASSERT(vr->vr_res != NULL, ("vga_pci_unmap_bios: bios not mapped")); 312 KASSERT(rman_get_virtual(vr->vr_res) == bios, 313 ("vga_pci_unmap_bios: mismatch")); 314 vga_pci_release_resource(dev, NULL, SYS_RES_MEMORY, rid, 315 vr->vr_res); 316 } 317 318 int 319 vga_pci_repost(device_t dev) 320 { 321 #if defined(__amd64__) || defined(__i386__) 322 x86regs_t regs; 323 324 if (!vga_pci_is_boot_display(dev)) 325 return (EINVAL); 326 327 if (x86bios_get_orm(VGA_PCI_BIOS_SHADOW_ADDR) == NULL) 328 return (ENOTSUP); 329 330 x86bios_init_regs(®s); 331 332 regs.R_AH = pci_get_bus(dev); 333 regs.R_AL = (pci_get_slot(dev) << 3) | (pci_get_function(dev) & 0x07); 334 regs.R_DL = 0x80; 335 336 device_printf(dev, "REPOSTing\n"); 337 x86bios_call(®s, X86BIOS_PHYSTOSEG(VGA_PCI_BIOS_SHADOW_ADDR + 3), 338 X86BIOS_PHYSTOOFF(VGA_PCI_BIOS_SHADOW_ADDR + 3)); 339 340 x86bios_get_intr(0x10); 341 342 return (0); 343 #else 344 return (ENOTSUP); 345 #endif 346 } 347 348 static int 349 vga_pci_probe(device_t dev) 350 { 351 352 switch (pci_get_class(dev)) { 353 case PCIC_DISPLAY: 354 break; 355 case PCIC_OLD: 356 if (pci_get_subclass(dev) != PCIS_OLD_VGA) 357 return (ENXIO); 358 break; 359 default: 360 return (ENXIO); 361 } 362 363 /* Probe default display. */ 364 vga_pci_is_boot_display(dev); 365 366 device_set_desc(dev, "VGA-compatible display"); 367 return (BUS_PROBE_GENERIC); 368 } 369 370 static int 371 vga_pci_attach(device_t dev) 372 { 373 374 bus_generic_probe(dev); 375 376 /* Always create a drmn child for now to make it easier on drm. */ 377 device_add_child(dev, "drmn", -1); 378 bus_generic_attach(dev); 379 380 if (vga_pci_is_boot_display(dev)) 381 device_printf(dev, "Boot video device\n"); 382 383 return (0); 384 } 385 386 static int 387 vga_pci_suspend(device_t dev) 388 { 389 390 return (bus_generic_suspend(dev)); 391 } 392 393 static int 394 vga_pci_detach(device_t dev) 395 { 396 int error; 397 398 error = bus_generic_detach(dev); 399 if (error == 0) 400 error = device_delete_children(dev); 401 return (error); 402 } 403 404 static int 405 vga_pci_resume(device_t dev) 406 { 407 408 return (bus_generic_resume(dev)); 409 } 410 411 /* Bus interface. */ 412 413 static int 414 vga_pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 415 { 416 417 return (BUS_READ_IVAR(device_get_parent(dev), dev, which, result)); 418 } 419 420 static int 421 vga_pci_write_ivar(device_t dev, device_t child, int which, uintptr_t value) 422 { 423 424 return (EINVAL); 425 } 426 427 static int 428 vga_pci_setup_intr(device_t dev, device_t child, struct resource *irq, 429 int flags, driver_filter_t *filter, driver_intr_t *intr, void *arg, 430 void **cookiep) 431 { 432 return (BUS_SETUP_INTR(device_get_parent(dev), dev, irq, flags, 433 filter, intr, arg, cookiep)); 434 } 435 436 static int 437 vga_pci_teardown_intr(device_t dev, device_t child, struct resource *irq, 438 void *cookie) 439 { 440 return (BUS_TEARDOWN_INTR(device_get_parent(dev), dev, irq, cookie)); 441 } 442 443 static struct vga_resource * 444 lookup_res(struct vga_pci_softc *sc, int rid) 445 { 446 int bar; 447 448 if (rid == PCIR_BIOS) 449 return (&sc->vga_bios); 450 bar = PCI_RID2BAR(rid); 451 if (bar >= 0 && bar <= PCIR_MAX_BAR_0) 452 return (&sc->vga_bars[bar]); 453 return (NULL); 454 } 455 456 static struct resource * 457 vga_pci_alloc_resource(device_t dev, device_t child, int type, int *rid, 458 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 459 { 460 struct vga_resource *vr; 461 462 switch (type) { 463 case SYS_RES_MEMORY: 464 case SYS_RES_IOPORT: 465 /* 466 * For BARs, we cache the resource so that we only allocate it 467 * from the PCI bus once. 468 */ 469 vr = lookup_res(device_get_softc(dev), *rid); 470 if (vr == NULL) 471 return (NULL); 472 if (vr->vr_res == NULL) 473 vr->vr_res = bus_alloc_resource(dev, type, rid, start, 474 end, count, flags); 475 if (vr->vr_res != NULL) 476 vr->vr_refs++; 477 return (vr->vr_res); 478 } 479 return (bus_alloc_resource(dev, type, rid, start, end, count, flags)); 480 } 481 482 static int 483 vga_pci_release_resource(device_t dev, device_t child, int type, int rid, 484 struct resource *r) 485 { 486 struct vga_resource *vr; 487 int error; 488 489 switch (type) { 490 case SYS_RES_MEMORY: 491 case SYS_RES_IOPORT: 492 /* 493 * For BARs, we release the resource from the PCI bus 494 * when the last child reference goes away. 495 */ 496 vr = lookup_res(device_get_softc(dev), rid); 497 if (vr == NULL) 498 return (EINVAL); 499 if (vr->vr_res == NULL) 500 return (EINVAL); 501 KASSERT(vr->vr_res == r, ("vga_pci resource mismatch")); 502 if (vr->vr_refs > 1) { 503 vr->vr_refs--; 504 return (0); 505 } 506 KASSERT(vr->vr_refs > 0, 507 ("vga_pci resource reference count underflow")); 508 error = bus_release_resource(dev, type, rid, r); 509 if (error == 0) { 510 vr->vr_res = NULL; 511 vr->vr_refs = 0; 512 } 513 return (error); 514 } 515 516 return (bus_release_resource(dev, type, rid, r)); 517 } 518 519 /* PCI interface. */ 520 521 static uint32_t 522 vga_pci_read_config(device_t dev, device_t child, int reg, int width) 523 { 524 525 return (pci_read_config(dev, reg, width)); 526 } 527 528 static void 529 vga_pci_write_config(device_t dev, device_t child, int reg, 530 uint32_t val, int width) 531 { 532 533 pci_write_config(dev, reg, val, width); 534 } 535 536 static int 537 vga_pci_enable_busmaster(device_t dev, device_t child) 538 { 539 540 return (pci_enable_busmaster(dev)); 541 } 542 543 static int 544 vga_pci_disable_busmaster(device_t dev, device_t child) 545 { 546 547 return (pci_disable_busmaster(dev)); 548 } 549 550 static int 551 vga_pci_enable_io(device_t dev, device_t child, int space) 552 { 553 554 device_printf(dev, "child %s requested pci_enable_io\n", 555 device_get_nameunit(child)); 556 return (pci_enable_io(dev, space)); 557 } 558 559 static int 560 vga_pci_disable_io(device_t dev, device_t child, int space) 561 { 562 563 device_printf(dev, "child %s requested pci_disable_io\n", 564 device_get_nameunit(child)); 565 return (pci_disable_io(dev, space)); 566 } 567 568 static int 569 vga_pci_get_vpd_ident(device_t dev, device_t child, const char **identptr) 570 { 571 572 return (pci_get_vpd_ident(dev, identptr)); 573 } 574 575 static int 576 vga_pci_get_vpd_readonly(device_t dev, device_t child, const char *kw, 577 const char **vptr) 578 { 579 580 return (pci_get_vpd_readonly(dev, kw, vptr)); 581 } 582 583 static int 584 vga_pci_set_powerstate(device_t dev, device_t child, int state) 585 { 586 587 device_printf(dev, "child %s requested pci_set_powerstate\n", 588 device_get_nameunit(child)); 589 return (pci_set_powerstate(dev, state)); 590 } 591 592 static int 593 vga_pci_get_powerstate(device_t dev, device_t child) 594 { 595 596 device_printf(dev, "child %s requested pci_get_powerstate\n", 597 device_get_nameunit(child)); 598 return (pci_get_powerstate(dev)); 599 } 600 601 static int 602 vga_pci_assign_interrupt(device_t dev, device_t child) 603 { 604 605 device_printf(dev, "child %s requested pci_assign_interrupt\n", 606 device_get_nameunit(child)); 607 return (PCI_ASSIGN_INTERRUPT(device_get_parent(dev), dev)); 608 } 609 610 static int 611 vga_pci_find_cap(device_t dev, device_t child, int capability, 612 int *capreg) 613 { 614 615 return (pci_find_cap(dev, capability, capreg)); 616 } 617 618 static int 619 vga_pci_find_next_cap(device_t dev, device_t child, int capability, 620 int start, int *capreg) 621 { 622 623 return (pci_find_next_cap(dev, capability, start, capreg)); 624 } 625 626 static int 627 vga_pci_find_extcap(device_t dev, device_t child, int capability, 628 int *capreg) 629 { 630 631 return (pci_find_extcap(dev, capability, capreg)); 632 } 633 634 static int 635 vga_pci_find_next_extcap(device_t dev, device_t child, int capability, 636 int start, int *capreg) 637 { 638 639 return (pci_find_next_extcap(dev, capability, start, capreg)); 640 } 641 642 static int 643 vga_pci_find_htcap(device_t dev, device_t child, int capability, 644 int *capreg) 645 { 646 647 return (pci_find_htcap(dev, capability, capreg)); 648 } 649 650 static int 651 vga_pci_find_next_htcap(device_t dev, device_t child, int capability, 652 int start, int *capreg) 653 { 654 655 return (pci_find_next_htcap(dev, capability, start, capreg)); 656 } 657 658 static int 659 vga_pci_alloc_msi(device_t dev, device_t child, int *count) 660 { 661 struct vga_pci_softc *sc; 662 int error; 663 664 sc = device_get_softc(dev); 665 if (sc->vga_msi_child != NULL) 666 return (EBUSY); 667 error = pci_alloc_msi(dev, count); 668 if (error == 0) 669 sc->vga_msi_child = child; 670 return (error); 671 } 672 673 static int 674 vga_pci_alloc_msix(device_t dev, device_t child, int *count) 675 { 676 struct vga_pci_softc *sc; 677 int error; 678 679 sc = device_get_softc(dev); 680 if (sc->vga_msi_child != NULL) 681 return (EBUSY); 682 error = pci_alloc_msix(dev, count); 683 if (error == 0) 684 sc->vga_msi_child = child; 685 return (error); 686 } 687 688 static int 689 vga_pci_remap_msix(device_t dev, device_t child, int count, 690 const u_int *vectors) 691 { 692 struct vga_pci_softc *sc; 693 694 sc = device_get_softc(dev); 695 if (sc->vga_msi_child != child) 696 return (ENXIO); 697 return (pci_remap_msix(dev, count, vectors)); 698 } 699 700 static int 701 vga_pci_release_msi(device_t dev, device_t child) 702 { 703 struct vga_pci_softc *sc; 704 int error; 705 706 sc = device_get_softc(dev); 707 if (sc->vga_msi_child != child) 708 return (ENXIO); 709 error = pci_release_msi(dev); 710 if (error == 0) 711 sc->vga_msi_child = NULL; 712 return (error); 713 } 714 715 static int 716 vga_pci_msi_count(device_t dev, device_t child) 717 { 718 719 return (pci_msi_count(dev)); 720 } 721 722 static int 723 vga_pci_msix_count(device_t dev, device_t child) 724 { 725 726 return (pci_msix_count(dev)); 727 } 728 729 static bus_dma_tag_t 730 vga_pci_get_dma_tag(device_t bus, device_t child) 731 { 732 733 return (bus_get_dma_tag(bus)); 734 } 735 736 static device_method_t vga_pci_methods[] = { 737 /* Device interface */ 738 DEVMETHOD(device_probe, vga_pci_probe), 739 DEVMETHOD(device_attach, vga_pci_attach), 740 DEVMETHOD(device_shutdown, bus_generic_shutdown), 741 DEVMETHOD(device_suspend, vga_pci_suspend), 742 DEVMETHOD(device_detach, vga_pci_detach), 743 DEVMETHOD(device_resume, vga_pci_resume), 744 745 /* Bus interface */ 746 DEVMETHOD(bus_read_ivar, vga_pci_read_ivar), 747 DEVMETHOD(bus_write_ivar, vga_pci_write_ivar), 748 DEVMETHOD(bus_setup_intr, vga_pci_setup_intr), 749 DEVMETHOD(bus_teardown_intr, vga_pci_teardown_intr), 750 DEVMETHOD(bus_alloc_resource, vga_pci_alloc_resource), 751 DEVMETHOD(bus_release_resource, vga_pci_release_resource), 752 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 753 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 754 DEVMETHOD(bus_get_dma_tag, vga_pci_get_dma_tag), 755 756 /* PCI interface */ 757 DEVMETHOD(pci_read_config, vga_pci_read_config), 758 DEVMETHOD(pci_write_config, vga_pci_write_config), 759 DEVMETHOD(pci_enable_busmaster, vga_pci_enable_busmaster), 760 DEVMETHOD(pci_disable_busmaster, vga_pci_disable_busmaster), 761 DEVMETHOD(pci_enable_io, vga_pci_enable_io), 762 DEVMETHOD(pci_disable_io, vga_pci_disable_io), 763 DEVMETHOD(pci_get_vpd_ident, vga_pci_get_vpd_ident), 764 DEVMETHOD(pci_get_vpd_readonly, vga_pci_get_vpd_readonly), 765 DEVMETHOD(pci_get_powerstate, vga_pci_get_powerstate), 766 DEVMETHOD(pci_set_powerstate, vga_pci_set_powerstate), 767 DEVMETHOD(pci_assign_interrupt, vga_pci_assign_interrupt), 768 DEVMETHOD(pci_find_cap, vga_pci_find_cap), 769 DEVMETHOD(pci_find_next_cap, vga_pci_find_next_cap), 770 DEVMETHOD(pci_find_extcap, vga_pci_find_extcap), 771 DEVMETHOD(pci_find_next_extcap, vga_pci_find_next_extcap), 772 DEVMETHOD(pci_find_htcap, vga_pci_find_htcap), 773 DEVMETHOD(pci_find_next_htcap, vga_pci_find_next_htcap), 774 DEVMETHOD(pci_alloc_msi, vga_pci_alloc_msi), 775 DEVMETHOD(pci_alloc_msix, vga_pci_alloc_msix), 776 DEVMETHOD(pci_remap_msix, vga_pci_remap_msix), 777 DEVMETHOD(pci_release_msi, vga_pci_release_msi), 778 DEVMETHOD(pci_msi_count, vga_pci_msi_count), 779 DEVMETHOD(pci_msix_count, vga_pci_msix_count), 780 { 0, 0 } 781 }; 782 783 static driver_t vga_pci_driver = { 784 "vgapci", 785 vga_pci_methods, 786 sizeof(struct vga_pci_softc), 787 }; 788 789 DRIVER_MODULE(vgapci, pci, vga_pci_driver, 0, 0); 790 MODULE_DEPEND(vgapci, x86bios, 1, 1, 1); 791