1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 57struct vga_resource { 58 struct resource *vr_res; 59 int vr_refs; 60}; 61 62struct 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 68SYSCTL_DECL(_hw_pci); 69 70static struct vga_resource *lookup_res(struct vga_pci_softc *sc, int rid); 71static 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); 74static int vga_pci_release_resource(device_t dev, device_t child, int type, 75 int rid, struct resource *r); 76 77int vga_pci_default_unit = -1; 78SYSCTL_INT(_hw_pci, OID_AUTO, default_vgapci_unit, CTLFLAG_RDTUN, 79 &vga_pci_default_unit, -1, "Default VGA-compatible display"); 80 81int 82vga_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 145static void 146vga_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 163void * 164vga_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 275void 276vga_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((vm_offset_t)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 318int 319vga_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 348static int 349vga_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 370static int 371vga_pci_attach(device_t dev) 372{ 373 374 bus_generic_probe(dev); 375 376 /* Always create a drm child for now to make it easier on drm. */ 377 device_add_child(dev, "drm", -1); 378 device_add_child(dev, "drmn", -1); 379 bus_generic_attach(dev); 380 381 if (vga_pci_is_boot_display(dev)) 382 device_printf(dev, "Boot video device\n"); 383 384 return (0); 385} 386 387static int 388vga_pci_suspend(device_t dev) 389{ 390 391 return (bus_generic_suspend(dev)); 392} 393 394static int 395vga_pci_detach(device_t dev) 396{ 397 int error; 398 399 error = bus_generic_detach(dev); 400 if (error == 0) 401 error = device_delete_children(dev); 402 return (error); 403} 404 405static int 406vga_pci_resume(device_t dev) 407{ 408 409 return (bus_generic_resume(dev)); 410} 411 412/* Bus interface. */ 413 414static int 415vga_pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 416{ 417 418 return (BUS_READ_IVAR(device_get_parent(dev), dev, which, result)); 419} 420 421static int 422vga_pci_write_ivar(device_t dev, device_t child, int which, uintptr_t value) 423{ 424 425 return (EINVAL); 426} 427 428static int 429vga_pci_setup_intr(device_t dev, device_t child, struct resource *irq, 430 int flags, driver_filter_t *filter, driver_intr_t *intr, void *arg, 431 void **cookiep) 432{ 433 return (BUS_SETUP_INTR(device_get_parent(dev), dev, irq, flags, 434 filter, intr, arg, cookiep)); 435} 436 437static int 438vga_pci_teardown_intr(device_t dev, device_t child, struct resource *irq, 439 void *cookie) 440{ 441 return (BUS_TEARDOWN_INTR(device_get_parent(dev), dev, irq, cookie)); 442} 443 444static struct vga_resource * 445lookup_res(struct vga_pci_softc *sc, int rid) 446{ 447 int bar; 448 449 if (rid == PCIR_BIOS) 450 return (&sc->vga_bios); 451 bar = PCI_RID2BAR(rid); 452 if (bar >= 0 && bar <= PCIR_MAX_BAR_0) 453 return (&sc->vga_bars[bar]); 454 return (NULL); 455} 456 457static struct resource * 458vga_pci_alloc_resource(device_t dev, device_t child, int type, int *rid, 459 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 460{ 461 struct vga_resource *vr; 462 463 switch (type) { 464 case SYS_RES_MEMORY: 465 case SYS_RES_IOPORT: 466 /* 467 * For BARs, we cache the resource so that we only allocate it 468 * from the PCI bus once. 469 */ 470 vr = lookup_res(device_get_softc(dev), *rid); 471 if (vr == NULL) 472 return (NULL); 473 if (vr->vr_res == NULL) 474 vr->vr_res = bus_alloc_resource(dev, type, rid, start, 475 end, count, flags); 476 if (vr->vr_res != NULL) 477 vr->vr_refs++; 478 return (vr->vr_res); 479 } 480 return (bus_alloc_resource(dev, type, rid, start, end, count, flags)); 481} 482 483static int 484vga_pci_release_resource(device_t dev, device_t child, int type, int rid, 485 struct resource *r) 486{ 487 struct vga_resource *vr; 488 int error; 489 490 switch (type) { 491 case SYS_RES_MEMORY: 492 case SYS_RES_IOPORT: 493 /* 494 * For BARs, we release the resource from the PCI bus 495 * when the last child reference goes away. 496 */ 497 vr = lookup_res(device_get_softc(dev), rid); 498 if (vr == NULL) 499 return (EINVAL); 500 if (vr->vr_res == NULL) 501 return (EINVAL); 502 KASSERT(vr->vr_res == r, ("vga_pci resource mismatch")); 503 if (vr->vr_refs > 1) { 504 vr->vr_refs--; 505 return (0); 506 } 507 KASSERT(vr->vr_refs > 0, 508 ("vga_pci resource reference count underflow")); 509 error = bus_release_resource(dev, type, rid, r); 510 if (error == 0) { 511 vr->vr_res = NULL; 512 vr->vr_refs = 0; 513 } 514 return (error); 515 } 516 517 return (bus_release_resource(dev, type, rid, r)); 518} 519 520/* PCI interface. */ 521 522static uint32_t 523vga_pci_read_config(device_t dev, device_t child, int reg, int width) 524{ 525 526 return (pci_read_config(dev, reg, width)); 527} 528 529static void 530vga_pci_write_config(device_t dev, device_t child, int reg, 531 uint32_t val, int width) 532{ 533 534 pci_write_config(dev, reg, val, width); 535} 536 537static int 538vga_pci_enable_busmaster(device_t dev, device_t child) 539{ 540 541 return (pci_enable_busmaster(dev)); 542} 543 544static int 545vga_pci_disable_busmaster(device_t dev, device_t child) 546{ 547 548 return (pci_disable_busmaster(dev)); 549} 550 551static int 552vga_pci_enable_io(device_t dev, device_t child, int space) 553{ 554 555 device_printf(dev, "child %s requested pci_enable_io\n", 556 device_get_nameunit(child)); 557 return (pci_enable_io(dev, space)); 558} 559 560static int 561vga_pci_disable_io(device_t dev, device_t child, int space) 562{ 563 564 device_printf(dev, "child %s requested pci_disable_io\n", 565 device_get_nameunit(child)); 566 return (pci_disable_io(dev, space)); 567} 568 569static int 570vga_pci_get_vpd_ident(device_t dev, device_t child, const char **identptr) 571{ 572 573 return (pci_get_vpd_ident(dev, identptr)); 574} 575 576static int 577vga_pci_get_vpd_readonly(device_t dev, device_t child, const char *kw, 578 const char **vptr) 579{ 580 581 return (pci_get_vpd_readonly(dev, kw, vptr)); 582} 583 584static int 585vga_pci_set_powerstate(device_t dev, device_t child, int state) 586{ 587 588 device_printf(dev, "child %s requested pci_set_powerstate\n", 589 device_get_nameunit(child)); 590 return (pci_set_powerstate(dev, state)); 591} 592 593static int 594vga_pci_get_powerstate(device_t dev, device_t child) 595{ 596 597 device_printf(dev, "child %s requested pci_get_powerstate\n", 598 device_get_nameunit(child)); 599 return (pci_get_powerstate(dev)); 600} 601 602static int 603vga_pci_assign_interrupt(device_t dev, device_t child) 604{ 605 606 device_printf(dev, "child %s requested pci_assign_interrupt\n", 607 device_get_nameunit(child)); 608 return (PCI_ASSIGN_INTERRUPT(device_get_parent(dev), dev)); 609} 610 611static int 612vga_pci_find_cap(device_t dev, device_t child, int capability, 613 int *capreg) 614{ 615 616 return (pci_find_cap(dev, capability, capreg)); 617} 618 619static int 620vga_pci_find_next_cap(device_t dev, device_t child, int capability, 621 int start, int *capreg) 622{ 623 624 return (pci_find_next_cap(dev, capability, start, capreg)); 625} 626 627static int 628vga_pci_find_extcap(device_t dev, device_t child, int capability, 629 int *capreg) 630{ 631 632 return (pci_find_extcap(dev, capability, capreg)); 633} 634 635static int 636vga_pci_find_next_extcap(device_t dev, device_t child, int capability, 637 int start, int *capreg) 638{ 639 640 return (pci_find_next_extcap(dev, capability, start, capreg)); 641} 642 643static int 644vga_pci_find_htcap(device_t dev, device_t child, int capability, 645 int *capreg) 646{ 647 648 return (pci_find_htcap(dev, capability, capreg)); 649} 650 651static int 652vga_pci_find_next_htcap(device_t dev, device_t child, int capability, 653 int start, int *capreg) 654{ 655 656 return (pci_find_next_htcap(dev, capability, start, capreg)); 657} 658 659static int 660vga_pci_alloc_msi(device_t dev, device_t child, int *count) 661{ 662 struct vga_pci_softc *sc; 663 int error; 664 665 sc = device_get_softc(dev); 666 if (sc->vga_msi_child != NULL) 667 return (EBUSY); 668 error = pci_alloc_msi(dev, count); 669 if (error == 0) 670 sc->vga_msi_child = child; 671 return (error); 672} 673 674static int 675vga_pci_alloc_msix(device_t dev, device_t child, int *count) 676{ 677 struct vga_pci_softc *sc; 678 int error; 679 680 sc = device_get_softc(dev); 681 if (sc->vga_msi_child != NULL) 682 return (EBUSY); 683 error = pci_alloc_msix(dev, count); 684 if (error == 0) 685 sc->vga_msi_child = child; 686 return (error); 687} 688 689static int 690vga_pci_remap_msix(device_t dev, device_t child, int count, 691 const u_int *vectors) 692{ 693 struct vga_pci_softc *sc; 694 695 sc = device_get_softc(dev); 696 if (sc->vga_msi_child != child) 697 return (ENXIO); 698 return (pci_remap_msix(dev, count, vectors)); 699} 700 701static int 702vga_pci_release_msi(device_t dev, device_t child) 703{ 704 struct vga_pci_softc *sc; 705 int error; 706 707 sc = device_get_softc(dev); 708 if (sc->vga_msi_child != child) 709 return (ENXIO); 710 error = pci_release_msi(dev); 711 if (error == 0) 712 sc->vga_msi_child = NULL; 713 return (error); 714} 715 716static int 717vga_pci_msi_count(device_t dev, device_t child) 718{ 719 720 return (pci_msi_count(dev)); 721} 722 723static int 724vga_pci_msix_count(device_t dev, device_t child) 725{ 726 727 return (pci_msix_count(dev)); 728} 729 730static bus_dma_tag_t 731vga_pci_get_dma_tag(device_t bus, device_t child) 732{ 733 734 return (bus_get_dma_tag(bus)); 735} 736 737static device_method_t vga_pci_methods[] = { 738 /* Device interface */ 739 DEVMETHOD(device_probe, vga_pci_probe), 740 DEVMETHOD(device_attach, vga_pci_attach), 741 DEVMETHOD(device_shutdown, bus_generic_shutdown), 742 DEVMETHOD(device_suspend, vga_pci_suspend), 743 DEVMETHOD(device_detach, vga_pci_detach), 744 DEVMETHOD(device_resume, vga_pci_resume), 745 746 /* Bus interface */ 747 DEVMETHOD(bus_read_ivar, vga_pci_read_ivar), 748 DEVMETHOD(bus_write_ivar, vga_pci_write_ivar), 749 DEVMETHOD(bus_setup_intr, vga_pci_setup_intr), 750 DEVMETHOD(bus_teardown_intr, vga_pci_teardown_intr), 751 DEVMETHOD(bus_alloc_resource, vga_pci_alloc_resource), 752 DEVMETHOD(bus_release_resource, vga_pci_release_resource), 753 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 754 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 755 DEVMETHOD(bus_get_dma_tag, vga_pci_get_dma_tag), 756 757 /* PCI interface */ 758 DEVMETHOD(pci_read_config, vga_pci_read_config), 759 DEVMETHOD(pci_write_config, vga_pci_write_config), 760 DEVMETHOD(pci_enable_busmaster, vga_pci_enable_busmaster), 761 DEVMETHOD(pci_disable_busmaster, vga_pci_disable_busmaster), 762 DEVMETHOD(pci_enable_io, vga_pci_enable_io), 763 DEVMETHOD(pci_disable_io, vga_pci_disable_io), 764 DEVMETHOD(pci_get_vpd_ident, vga_pci_get_vpd_ident), 765 DEVMETHOD(pci_get_vpd_readonly, vga_pci_get_vpd_readonly), 766 DEVMETHOD(pci_get_powerstate, vga_pci_get_powerstate), 767 DEVMETHOD(pci_set_powerstate, vga_pci_set_powerstate), 768 DEVMETHOD(pci_assign_interrupt, vga_pci_assign_interrupt), 769 DEVMETHOD(pci_find_cap, vga_pci_find_cap), 770 DEVMETHOD(pci_find_next_cap, vga_pci_find_next_cap), 771 DEVMETHOD(pci_find_extcap, vga_pci_find_extcap), 772 DEVMETHOD(pci_find_next_extcap, vga_pci_find_next_extcap), 773 DEVMETHOD(pci_find_htcap, vga_pci_find_htcap), 774 DEVMETHOD(pci_find_next_htcap, vga_pci_find_next_htcap), 775 DEVMETHOD(pci_alloc_msi, vga_pci_alloc_msi), 776 DEVMETHOD(pci_alloc_msix, vga_pci_alloc_msix), 777 DEVMETHOD(pci_remap_msix, vga_pci_remap_msix), 778 DEVMETHOD(pci_release_msi, vga_pci_release_msi), 779 DEVMETHOD(pci_msi_count, vga_pci_msi_count), 780 DEVMETHOD(pci_msix_count, vga_pci_msix_count), 781 { 0, 0 } 782}; 783 784static driver_t vga_pci_driver = { 785 "vgapci", 786 vga_pci_methods, 787 sizeof(struct vga_pci_softc), 788}; 789 790static devclass_t vga_devclass; 791 792DRIVER_MODULE(vgapci, pci, vga_pci_driver, vga_devclass, 0, 0); 793MODULE_DEPEND(vgapci, x86bios, 1, 1, 1); 794