1 /*- 2 * Copyright (c) 1997, Stefan Esser <se@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * 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 ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 * 28 */ 29 30 #ifndef _PCIVAR_H_ 31 #define _PCIVAR_H_ 32 33 #include <sys/queue.h> 34 35 /* some PCI bus constants */ 36 #define PCI_MAXMAPS_0 6 /* max. no. of memory/port maps */ 37 #define PCI_MAXMAPS_1 2 /* max. no. of maps for PCI to PCI bridge */ 38 #define PCI_MAXMAPS_2 1 /* max. no. of maps for CardBus bridge */ 39 40 typedef uint64_t pci_addr_t; 41 42 /* Config registers for PCI-PCI and PCI-Cardbus bridges. */ 43 struct pcicfg_bridge { 44 uint8_t br_seclat; 45 uint8_t br_subbus; 46 uint8_t br_secbus; 47 uint8_t br_pribus; 48 uint16_t br_control; 49 }; 50 51 /* Interesting values for PCI power management */ 52 struct pcicfg_pp { 53 uint16_t pp_cap; /* PCI power management capabilities */ 54 uint8_t pp_status; /* conf. space addr. of PM control/status reg */ 55 uint8_t pp_bse; /* conf. space addr. of PM BSE reg */ 56 uint8_t pp_data; /* conf. space addr. of PM data reg */ 57 }; 58 59 struct pci_map { 60 pci_addr_t pm_value; /* Raw BAR value */ 61 pci_addr_t pm_size; 62 uint16_t pm_reg; 63 STAILQ_ENTRY(pci_map) pm_link; 64 }; 65 66 struct vpd_readonly { 67 char keyword[2]; 68 char *value; 69 int len; 70 }; 71 72 struct vpd_write { 73 char keyword[2]; 74 char *value; 75 int start; 76 int len; 77 }; 78 79 struct pcicfg_vpd { 80 uint8_t vpd_reg; /* base register, + 2 for addr, + 4 data */ 81 char vpd_cached; 82 char *vpd_ident; /* string identifier */ 83 int vpd_rocnt; 84 struct vpd_readonly *vpd_ros; 85 int vpd_wcnt; 86 struct vpd_write *vpd_w; 87 }; 88 89 /* Interesting values for PCI MSI */ 90 struct pcicfg_msi { 91 uint16_t msi_ctrl; /* Message Control */ 92 uint8_t msi_location; /* Offset of MSI capability registers. */ 93 uint8_t msi_msgnum; /* Number of messages */ 94 int msi_alloc; /* Number of allocated messages. */ 95 uint64_t msi_addr; /* Contents of address register. */ 96 uint16_t msi_data; /* Contents of data register. */ 97 u_int msi_handlers; 98 }; 99 100 /* Interesting values for PCI MSI-X */ 101 struct msix_vector { 102 uint64_t mv_address; /* Contents of address register. */ 103 uint32_t mv_data; /* Contents of data register. */ 104 int mv_irq; 105 }; 106 107 struct msix_table_entry { 108 u_int mte_vector; /* 1-based index into msix_vectors array. */ 109 u_int mte_handlers; 110 }; 111 112 struct pcicfg_msix { 113 uint16_t msix_ctrl; /* Message Control */ 114 uint16_t msix_msgnum; /* Number of messages */ 115 uint8_t msix_location; /* Offset of MSI-X capability registers. */ 116 uint8_t msix_table_bar; /* BAR containing vector table. */ 117 uint8_t msix_pba_bar; /* BAR containing PBA. */ 118 uint32_t msix_table_offset; 119 uint32_t msix_pba_offset; 120 int msix_alloc; /* Number of allocated vectors. */ 121 int msix_table_len; /* Length of virtual table. */ 122 struct msix_table_entry *msix_table; /* Virtual table. */ 123 struct msix_vector *msix_vectors; /* Array of allocated vectors. */ 124 struct resource *msix_table_res; /* Resource containing vector table. */ 125 struct resource *msix_pba_res; /* Resource containing PBA. */ 126 }; 127 128 /* Interesting values for HyperTransport */ 129 struct pcicfg_ht { 130 uint8_t ht_slave; /* Non-zero if device is an HT slave. */ 131 uint8_t ht_msimap; /* Offset of MSI mapping cap registers. */ 132 uint16_t ht_msictrl; /* MSI mapping control */ 133 uint64_t ht_msiaddr; /* MSI mapping base address */ 134 }; 135 136 /* Interesting values for PCI-express */ 137 struct pcicfg_pcie { 138 uint8_t pcie_location; /* Offset of PCI-e capability registers. */ 139 uint8_t pcie_type; /* Device type. */ 140 uint16_t pcie_flags; /* Device capabilities register. */ 141 uint16_t pcie_device_ctl; /* Device control register. */ 142 uint16_t pcie_link_ctl; /* Link control register. */ 143 uint16_t pcie_slot_ctl; /* Slot control register. */ 144 uint16_t pcie_root_ctl; /* Root control register. */ 145 uint16_t pcie_device_ctl2; /* Second device control register. */ 146 uint16_t pcie_link_ctl2; /* Second link control register. */ 147 uint16_t pcie_slot_ctl2; /* Second slot control register. */ 148 }; 149 150 struct pcicfg_pcix { 151 uint16_t pcix_command; 152 uint8_t pcix_location; /* Offset of PCI-X capability registers. */ 153 }; 154 155 struct pcicfg_vf { 156 int index; 157 }; 158 159 struct pci_ea_entry { 160 int eae_bei; 161 uint32_t eae_flags; 162 uint64_t eae_base; 163 uint64_t eae_max_offset; 164 uint32_t eae_cfg_offset; 165 STAILQ_ENTRY(pci_ea_entry) eae_link; 166 }; 167 168 struct pcicfg_ea { 169 int ea_location; /* Structure offset in Configuration Header */ 170 STAILQ_HEAD(, pci_ea_entry) ea_entries; /* EA entries */ 171 }; 172 173 #define PCICFG_VF 0x0001 /* Device is an SR-IOV Virtual Function */ 174 175 /* config header information common to all header types */ 176 typedef struct pcicfg { 177 struct device *dev; /* device which owns this */ 178 179 STAILQ_HEAD(, pci_map) maps; /* BARs */ 180 181 uint16_t subvendor; /* card vendor ID */ 182 uint16_t subdevice; /* card device ID, assigned by card vendor */ 183 uint16_t vendor; /* chip vendor ID */ 184 uint16_t device; /* chip device ID, assigned by chip vendor */ 185 186 uint16_t cmdreg; /* disable/enable chip and PCI options */ 187 uint16_t statreg; /* supported PCI features and error state */ 188 189 uint8_t baseclass; /* chip PCI class */ 190 uint8_t subclass; /* chip PCI subclass */ 191 uint8_t progif; /* chip PCI programming interface */ 192 uint8_t revid; /* chip revision ID */ 193 194 uint8_t hdrtype; /* chip config header type */ 195 uint8_t cachelnsz; /* cache line size in 4byte units */ 196 uint8_t intpin; /* PCI interrupt pin */ 197 uint8_t intline; /* interrupt line (IRQ for PC arch) */ 198 199 uint8_t mingnt; /* min. useful bus grant time in 250ns units */ 200 uint8_t maxlat; /* max. tolerated bus grant latency in 250ns */ 201 uint8_t lattimer; /* latency timer in units of 30ns bus cycles */ 202 203 uint8_t mfdev; /* multi-function device (from hdrtype reg) */ 204 uint8_t nummaps; /* actual number of PCI maps used */ 205 206 uint32_t domain; /* PCI domain */ 207 uint8_t bus; /* config space bus address */ 208 uint8_t slot; /* config space slot address */ 209 uint8_t func; /* config space function number */ 210 211 uint32_t flags; /* flags defined above */ 212 213 struct pcicfg_bridge bridge; /* Bridges */ 214 struct pcicfg_pp pp; /* Power management */ 215 struct pcicfg_vpd vpd; /* Vital product data */ 216 struct pcicfg_msi msi; /* PCI MSI */ 217 struct pcicfg_msix msix; /* PCI MSI-X */ 218 struct pcicfg_ht ht; /* HyperTransport */ 219 struct pcicfg_pcie pcie; /* PCI Express */ 220 struct pcicfg_pcix pcix; /* PCI-X */ 221 struct pcicfg_iov *iov; /* SR-IOV */ 222 struct pcicfg_vf vf; /* SR-IOV Virtual Function */ 223 struct pcicfg_ea ea; /* Enhanced Allocation */ 224 } pcicfgregs; 225 226 /* additional type 1 device config header information (PCI to PCI bridge) */ 227 228 typedef struct { 229 pci_addr_t pmembase; /* base address of prefetchable memory */ 230 pci_addr_t pmemlimit; /* topmost address of prefetchable memory */ 231 uint32_t membase; /* base address of memory window */ 232 uint32_t memlimit; /* topmost address of memory window */ 233 uint32_t iobase; /* base address of port window */ 234 uint32_t iolimit; /* topmost address of port window */ 235 uint16_t secstat; /* secondary bus status register */ 236 uint16_t bridgectl; /* bridge control register */ 237 uint8_t seclat; /* CardBus latency timer */ 238 } pcih1cfgregs; 239 240 /* additional type 2 device config header information (CardBus bridge) */ 241 242 typedef struct { 243 uint32_t membase0; /* base address of memory window */ 244 uint32_t memlimit0; /* topmost address of memory window */ 245 uint32_t membase1; /* base address of memory window */ 246 uint32_t memlimit1; /* topmost address of memory window */ 247 uint32_t iobase0; /* base address of port window */ 248 uint32_t iolimit0; /* topmost address of port window */ 249 uint32_t iobase1; /* base address of port window */ 250 uint32_t iolimit1; /* topmost address of port window */ 251 uint32_t pccardif; /* PC Card 16bit IF legacy more base addr. */ 252 uint16_t secstat; /* secondary bus status register */ 253 uint16_t bridgectl; /* bridge control register */ 254 uint8_t seclat; /* CardBus latency timer */ 255 } pcih2cfgregs; 256 257 extern uint32_t pci_numdevs; 258 259 /* Only if the prerequisites are present */ 260 #if defined(_SYS_BUS_H_) && defined(_SYS_PCIIO_H_) 261 struct pci_devinfo { 262 STAILQ_ENTRY(pci_devinfo) pci_links; 263 struct resource_list resources; 264 pcicfgregs cfg; 265 struct pci_conf conf; 266 }; 267 #endif 268 269 #ifdef _SYS_BUS_H_ 270 271 #include "pci_if.h" 272 273 enum pci_device_ivars { 274 PCI_IVAR_SUBVENDOR, 275 PCI_IVAR_SUBDEVICE, 276 PCI_IVAR_VENDOR, 277 PCI_IVAR_DEVICE, 278 PCI_IVAR_DEVID, 279 PCI_IVAR_CLASS, 280 PCI_IVAR_SUBCLASS, 281 PCI_IVAR_PROGIF, 282 PCI_IVAR_REVID, 283 PCI_IVAR_INTPIN, 284 PCI_IVAR_IRQ, 285 PCI_IVAR_DOMAIN, 286 PCI_IVAR_BUS, 287 PCI_IVAR_SLOT, 288 PCI_IVAR_FUNCTION, 289 PCI_IVAR_ETHADDR, 290 PCI_IVAR_CMDREG, 291 PCI_IVAR_CACHELNSZ, 292 PCI_IVAR_MINGNT, 293 PCI_IVAR_MAXLAT, 294 PCI_IVAR_LATTIMER 295 }; 296 297 /* 298 * Simplified accessors for pci devices 299 */ 300 #define PCI_ACCESSOR(var, ivar, type) \ 301 __BUS_ACCESSOR(pci, var, PCI, ivar, type) 302 303 PCI_ACCESSOR(subvendor, SUBVENDOR, uint16_t) 304 PCI_ACCESSOR(subdevice, SUBDEVICE, uint16_t) 305 PCI_ACCESSOR(vendor, VENDOR, uint16_t) 306 PCI_ACCESSOR(device, DEVICE, uint16_t) 307 PCI_ACCESSOR(devid, DEVID, uint32_t) 308 PCI_ACCESSOR(class, CLASS, uint8_t) 309 PCI_ACCESSOR(subclass, SUBCLASS, uint8_t) 310 PCI_ACCESSOR(progif, PROGIF, uint8_t) 311 PCI_ACCESSOR(revid, REVID, uint8_t) 312 PCI_ACCESSOR(intpin, INTPIN, uint8_t) 313 PCI_ACCESSOR(irq, IRQ, uint8_t) 314 PCI_ACCESSOR(domain, DOMAIN, uint32_t) 315 PCI_ACCESSOR(bus, BUS, uint8_t) 316 PCI_ACCESSOR(slot, SLOT, uint8_t) 317 PCI_ACCESSOR(function, FUNCTION, uint8_t) 318 PCI_ACCESSOR(ether, ETHADDR, uint8_t *) 319 PCI_ACCESSOR(cmdreg, CMDREG, uint8_t) 320 PCI_ACCESSOR(cachelnsz, CACHELNSZ, uint8_t) 321 PCI_ACCESSOR(mingnt, MINGNT, uint8_t) 322 PCI_ACCESSOR(maxlat, MAXLAT, uint8_t) 323 PCI_ACCESSOR(lattimer, LATTIMER, uint8_t) 324 325 #undef PCI_ACCESSOR 326 327 /* 328 * Operations on configuration space. 329 */ 330 static __inline uint32_t 331 pci_read_config(device_t dev, int reg, int width) 332 { 333 return PCI_READ_CONFIG(device_get_parent(dev), dev, reg, width); 334 } 335 336 static __inline void 337 pci_write_config(device_t dev, int reg, uint32_t val, int width) 338 { 339 PCI_WRITE_CONFIG(device_get_parent(dev), dev, reg, val, width); 340 } 341 342 /* 343 * Ivars for pci bridges. 344 */ 345 346 /*typedef enum pci_device_ivars pcib_device_ivars;*/ 347 enum pcib_device_ivars { 348 PCIB_IVAR_DOMAIN, 349 PCIB_IVAR_BUS 350 }; 351 352 #define PCIB_ACCESSOR(var, ivar, type) \ 353 __BUS_ACCESSOR(pcib, var, PCIB, ivar, type) 354 355 PCIB_ACCESSOR(domain, DOMAIN, uint32_t) 356 PCIB_ACCESSOR(bus, BUS, uint32_t) 357 358 #undef PCIB_ACCESSOR 359 360 /* 361 * PCI interrupt validation. Invalid interrupt values such as 0 or 128 362 * on i386 or other platforms should be mapped out in the MD pcireadconf 363 * code and not here, since the only MI invalid IRQ is 255. 364 */ 365 #define PCI_INVALID_IRQ 255 366 #define PCI_INTERRUPT_VALID(x) ((x) != PCI_INVALID_IRQ) 367 368 /* 369 * Convenience functions. 370 * 371 * These should be used in preference to manually manipulating 372 * configuration space. 373 */ 374 static __inline int 375 pci_enable_busmaster(device_t dev) 376 { 377 return(PCI_ENABLE_BUSMASTER(device_get_parent(dev), dev)); 378 } 379 380 static __inline int 381 pci_disable_busmaster(device_t dev) 382 { 383 return(PCI_DISABLE_BUSMASTER(device_get_parent(dev), dev)); 384 } 385 386 static __inline int 387 pci_enable_io(device_t dev, int space) 388 { 389 return(PCI_ENABLE_IO(device_get_parent(dev), dev, space)); 390 } 391 392 static __inline int 393 pci_disable_io(device_t dev, int space) 394 { 395 return(PCI_DISABLE_IO(device_get_parent(dev), dev, space)); 396 } 397 398 static __inline int 399 pci_get_vpd_ident(device_t dev, const char **identptr) 400 { 401 return(PCI_GET_VPD_IDENT(device_get_parent(dev), dev, identptr)); 402 } 403 404 static __inline int 405 pci_get_vpd_readonly(device_t dev, const char *kw, const char **vptr) 406 { 407 return(PCI_GET_VPD_READONLY(device_get_parent(dev), dev, kw, vptr)); 408 } 409 410 /* 411 * Check if the address range falls within the VGA defined address range(s) 412 */ 413 static __inline int 414 pci_is_vga_ioport_range(rman_res_t start, rman_res_t end) 415 { 416 417 return (((start >= 0x3b0 && end <= 0x3bb) || 418 (start >= 0x3c0 && end <= 0x3df)) ? 1 : 0); 419 } 420 421 static __inline int 422 pci_is_vga_memory_range(rman_res_t start, rman_res_t end) 423 { 424 425 return ((start >= 0xa0000 && end <= 0xbffff) ? 1 : 0); 426 } 427 428 /* 429 * PCI power states are as defined by ACPI: 430 * 431 * D0 State in which device is on and running. It is receiving full 432 * power from the system and delivering full functionality to the user. 433 * D1 Class-specific low-power state in which device context may or may not 434 * be lost. Buses in D1 cannot do anything to the bus that would force 435 * devices on that bus to lose context. 436 * D2 Class-specific low-power state in which device context may or may 437 * not be lost. Attains greater power savings than D1. Buses in D2 438 * can cause devices on that bus to lose some context. Devices in D2 439 * must be prepared for the bus to be in D2 or higher. 440 * D3 State in which the device is off and not running. Device context is 441 * lost. Power can be removed from the device. 442 */ 443 #define PCI_POWERSTATE_D0 0 444 #define PCI_POWERSTATE_D1 1 445 #define PCI_POWERSTATE_D2 2 446 #define PCI_POWERSTATE_D3 3 447 #define PCI_POWERSTATE_UNKNOWN -1 448 449 static __inline int 450 pci_set_powerstate(device_t dev, int state) 451 { 452 return PCI_SET_POWERSTATE(device_get_parent(dev), dev, state); 453 } 454 455 static __inline int 456 pci_get_powerstate(device_t dev) 457 { 458 return PCI_GET_POWERSTATE(device_get_parent(dev), dev); 459 } 460 461 static __inline int 462 pci_find_cap(device_t dev, int capability, int *capreg) 463 { 464 return (PCI_FIND_CAP(device_get_parent(dev), dev, capability, capreg)); 465 } 466 467 static __inline int 468 pci_find_extcap(device_t dev, int capability, int *capreg) 469 { 470 return (PCI_FIND_EXTCAP(device_get_parent(dev), dev, capability, capreg)); 471 } 472 473 static __inline int 474 pci_find_htcap(device_t dev, int capability, int *capreg) 475 { 476 return (PCI_FIND_HTCAP(device_get_parent(dev), dev, capability, capreg)); 477 } 478 479 static __inline int 480 pci_alloc_msi(device_t dev, int *count) 481 { 482 return (PCI_ALLOC_MSI(device_get_parent(dev), dev, count)); 483 } 484 485 static __inline int 486 pci_alloc_msix(device_t dev, int *count) 487 { 488 return (PCI_ALLOC_MSIX(device_get_parent(dev), dev, count)); 489 } 490 491 static __inline void 492 pci_enable_msi(device_t dev, uint64_t address, uint16_t data) 493 { 494 PCI_ENABLE_MSI(device_get_parent(dev), dev, address, data); 495 } 496 497 static __inline void 498 pci_enable_msix(device_t dev, u_int index, uint64_t address, uint32_t data) 499 { 500 PCI_ENABLE_MSIX(device_get_parent(dev), dev, index, address, data); 501 } 502 503 static __inline void 504 pci_disable_msi(device_t dev) 505 { 506 PCI_DISABLE_MSI(device_get_parent(dev), dev); 507 } 508 509 static __inline int 510 pci_remap_msix(device_t dev, int count, const u_int *vectors) 511 { 512 return (PCI_REMAP_MSIX(device_get_parent(dev), dev, count, vectors)); 513 } 514 515 static __inline int 516 pci_release_msi(device_t dev) 517 { 518 return (PCI_RELEASE_MSI(device_get_parent(dev), dev)); 519 } 520 521 static __inline int 522 pci_msi_count(device_t dev) 523 { 524 return (PCI_MSI_COUNT(device_get_parent(dev), dev)); 525 } 526 527 static __inline int 528 pci_msix_count(device_t dev) 529 { 530 return (PCI_MSIX_COUNT(device_get_parent(dev), dev)); 531 } 532 533 static __inline int 534 pci_msix_pba_bar(device_t dev) 535 { 536 return (PCI_MSIX_PBA_BAR(device_get_parent(dev), dev)); 537 } 538 539 static __inline int 540 pci_msix_table_bar(device_t dev) 541 { 542 return (PCI_MSIX_TABLE_BAR(device_get_parent(dev), dev)); 543 } 544 545 static __inline int 546 pci_get_id(device_t dev, enum pci_id_type type, uintptr_t *id) 547 { 548 return (PCI_GET_ID(device_get_parent(dev), dev, type, id)); 549 } 550 551 /* 552 * This is the deprecated interface, there is no way to tell the difference 553 * between a failure and a valid value that happens to be the same as the 554 * failure value. 555 */ 556 static __inline uint16_t 557 pci_get_rid(device_t dev) 558 { 559 uintptr_t rid; 560 561 if (pci_get_id(dev, PCI_ID_RID, &rid) != 0) 562 return (0); 563 564 return (rid); 565 } 566 567 static __inline void 568 pci_child_added(device_t dev) 569 { 570 571 return (PCI_CHILD_ADDED(device_get_parent(dev), dev)); 572 } 573 574 device_t pci_find_bsf(uint8_t, uint8_t, uint8_t); 575 device_t pci_find_dbsf(uint32_t, uint8_t, uint8_t, uint8_t); 576 device_t pci_find_device(uint16_t, uint16_t); 577 device_t pci_find_class(uint8_t class, uint8_t subclass); 578 579 /* Can be used by drivers to manage the MSI-X table. */ 580 int pci_pending_msix(device_t dev, u_int index); 581 582 int pci_msi_device_blacklisted(device_t dev); 583 int pci_msix_device_blacklisted(device_t dev); 584 585 void pci_ht_map_msi(device_t dev, uint64_t addr); 586 587 device_t pci_find_pcie_root_port(device_t dev); 588 int pci_get_max_payload(device_t dev); 589 int pci_get_max_read_req(device_t dev); 590 void pci_restore_state(device_t dev); 591 void pci_save_state(device_t dev); 592 int pci_set_max_read_req(device_t dev, int size); 593 uint32_t pcie_read_config(device_t dev, int reg, int width); 594 void pcie_write_config(device_t dev, int reg, uint32_t value, int width); 595 uint32_t pcie_adjust_config(device_t dev, int reg, uint32_t mask, 596 uint32_t value, int width); 597 598 599 #ifdef BUS_SPACE_MAXADDR 600 #if (BUS_SPACE_MAXADDR > 0xFFFFFFFF) 601 #define PCI_DMA_BOUNDARY 0x100000000 602 #else 603 #define PCI_DMA_BOUNDARY 0 604 #endif 605 #endif 606 607 #endif /* _SYS_BUS_H_ */ 608 609 /* 610 * cdev switch for control device, initialised in generic PCI code 611 */ 612 extern struct cdevsw pcicdev; 613 614 /* 615 * List of all PCI devices, generation count for the list. 616 */ 617 STAILQ_HEAD(devlist, pci_devinfo); 618 619 extern struct devlist pci_devq; 620 extern uint32_t pci_generation; 621 622 struct pci_map *pci_find_bar(device_t dev, int reg); 623 int pci_bar_enabled(device_t dev, struct pci_map *pm); 624 struct pcicfg_vpd *pci_fetch_vpd_list(device_t dev); 625 626 #define VGA_PCI_BIOS_SHADOW_ADDR 0xC0000 627 #define VGA_PCI_BIOS_SHADOW_SIZE 131072 628 629 int vga_pci_is_boot_display(device_t dev); 630 void * vga_pci_map_bios(device_t dev, size_t *size); 631 void vga_pci_unmap_bios(device_t dev, void *bios); 632 int vga_pci_repost(device_t dev); 633 634 #endif /* _PCIVAR_H_ */ 635