1/*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright 1997, Stefan Esser <se@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 unmodified, this list of conditions, and the following 11 * disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 */ 28 29#ifndef _PCIVAR_H_ 30#define _PCIVAR_H_ 31 32#include <sys/queue.h> 33#include <sys/_eventhandler.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 40typedef uint64_t pci_addr_t; 41 42/* Config registers for PCI-PCI and PCI-Cardbus bridges. */ 43struct 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 */ 52struct 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 59struct 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 66struct vpd_readonly { 67 char keyword[2]; 68 char *value; 69 int len; 70}; 71 72struct vpd_write { 73 char keyword[2]; 74 char *value; 75 int start; 76 int len; 77}; 78 79struct 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 */ 90struct 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 */ 101struct 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 107struct msix_table_entry { 108 u_int mte_vector; /* 1-based index into msix_vectors array. */ 109 u_int mte_handlers; 110}; 111 112struct 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 128struct pci_id_ofw_iommu { 129 uint32_t id; 130 uint32_t xref; 131}; 132 133/* Interesting values for HyperTransport */ 134struct pcicfg_ht { 135 uint8_t ht_slave; /* Non-zero if device is an HT slave. */ 136 uint8_t ht_msimap; /* Offset of MSI mapping cap registers. */ 137 uint16_t ht_msictrl; /* MSI mapping control */ 138 uint64_t ht_msiaddr; /* MSI mapping base address */ 139}; 140 141/* Interesting values for PCI-express */ 142struct pcicfg_pcie { 143 uint8_t pcie_location; /* Offset of PCI-e capability registers. */ 144 uint8_t pcie_type; /* Device type. */ 145 uint16_t pcie_flags; /* Device capabilities register. */ 146 uint16_t pcie_device_ctl; /* Device control register. */ 147 uint16_t pcie_link_ctl; /* Link control register. */ 148 uint16_t pcie_slot_ctl; /* Slot control register. */ 149 uint16_t pcie_root_ctl; /* Root control register. */ 150 uint16_t pcie_device_ctl2; /* Second device control register. */ 151 uint16_t pcie_link_ctl2; /* Second link control register. */ 152 uint16_t pcie_slot_ctl2; /* Second slot control register. */ 153}; 154 155struct pcicfg_pcix { 156 uint16_t pcix_command; 157 uint8_t pcix_location; /* Offset of PCI-X capability registers. */ 158}; 159 160struct pcicfg_vf { 161 int index; 162}; 163 164struct pci_ea_entry { 165 int eae_bei; 166 uint32_t eae_flags; 167 uint64_t eae_base; 168 uint64_t eae_max_offset; 169 uint32_t eae_cfg_offset; 170 STAILQ_ENTRY(pci_ea_entry) eae_link; 171}; 172 173struct pcicfg_ea { 174 int ea_location; /* Structure offset in Configuration Header */ 175 STAILQ_HEAD(, pci_ea_entry) ea_entries; /* EA entries */ 176}; 177 178#define PCICFG_VF 0x0001 /* Device is an SR-IOV Virtual Function */ 179 180/* config header information common to all header types */ 181typedef struct pcicfg { 182 device_t dev; /* device which owns this */ 183 184 STAILQ_HEAD(, pci_map) maps; /* BARs */ 185 186 uint16_t subvendor; /* card vendor ID */ 187 uint16_t subdevice; /* card device ID, assigned by card vendor */ 188 uint16_t vendor; /* chip vendor ID */ 189 uint16_t device; /* chip device ID, assigned by chip vendor */ 190 191 uint16_t cmdreg; /* disable/enable chip and PCI options */ 192 uint16_t statreg; /* supported PCI features and error state */ 193 194 uint8_t baseclass; /* chip PCI class */ 195 uint8_t subclass; /* chip PCI subclass */ 196 uint8_t progif; /* chip PCI programming interface */ 197 uint8_t revid; /* chip revision ID */ 198 199 uint8_t hdrtype; /* chip config header type */ 200 uint8_t cachelnsz; /* cache line size in 4byte units */ 201 uint8_t intpin; /* PCI interrupt pin */ 202 uint8_t intline; /* interrupt line (IRQ for PC arch) */ 203 204 uint8_t mingnt; /* min. useful bus grant time in 250ns units */ 205 uint8_t maxlat; /* max. tolerated bus grant latency in 250ns */ 206 uint8_t lattimer; /* latency timer in units of 30ns bus cycles */ 207 208 uint8_t mfdev; /* multi-function device (from hdrtype reg) */ 209 uint8_t nummaps; /* actual number of PCI maps used */ 210 211 uint32_t domain; /* PCI domain */ 212 uint8_t bus; /* config space bus address */ 213 uint8_t slot; /* config space slot address */ 214 uint8_t func; /* config space function number */ 215 216 uint32_t flags; /* flags defined above */ 217 218 struct pcicfg_bridge bridge; /* Bridges */ 219 struct pcicfg_pp pp; /* Power management */ 220 struct pcicfg_vpd vpd; /* Vital product data */ 221 struct pcicfg_msi msi; /* PCI MSI */ 222 struct pcicfg_msix msix; /* PCI MSI-X */ 223 struct pcicfg_ht ht; /* HyperTransport */ 224 struct pcicfg_pcie pcie; /* PCI Express */ 225 struct pcicfg_pcix pcix; /* PCI-X */ 226 struct pcicfg_iov *iov; /* SR-IOV */ 227 struct pcicfg_vf vf; /* SR-IOV Virtual Function */ 228 struct pcicfg_ea ea; /* Enhanced Allocation */ 229} pcicfgregs; 230 231/* additional type 1 device config header information (PCI to PCI bridge) */ 232 233typedef struct { 234 pci_addr_t pmembase; /* base address of prefetchable memory */ 235 pci_addr_t pmemlimit; /* topmost address of prefetchable memory */ 236 uint32_t membase; /* base address of memory window */ 237 uint32_t memlimit; /* topmost address of memory window */ 238 uint32_t iobase; /* base address of port window */ 239 uint32_t iolimit; /* topmost address of port window */ 240 uint16_t secstat; /* secondary bus status register */ 241 uint16_t bridgectl; /* bridge control register */ 242 uint8_t seclat; /* CardBus latency timer */ 243} pcih1cfgregs; 244 245/* additional type 2 device config header information (CardBus bridge) */ 246 247typedef struct { 248 uint32_t membase0; /* base address of memory window */ 249 uint32_t memlimit0; /* topmost address of memory window */ 250 uint32_t membase1; /* base address of memory window */ 251 uint32_t memlimit1; /* topmost address of memory window */ 252 uint32_t iobase0; /* base address of port window */ 253 uint32_t iolimit0; /* topmost address of port window */ 254 uint32_t iobase1; /* base address of port window */ 255 uint32_t iolimit1; /* topmost address of port window */ 256 uint32_t pccardif; /* PC Card 16bit IF legacy more base addr. */ 257 uint16_t secstat; /* secondary bus status register */ 258 uint16_t bridgectl; /* bridge control register */ 259 uint8_t seclat; /* CardBus latency timer */ 260} pcih2cfgregs; 261 262extern uint32_t pci_numdevs; 263extern int pci_enable_aspm; 264 265/* 266 * The bitfield has to be stable and match the fields below (so that 267 * match_flag_vendor must be bit 0) so we have to do the endian dance. We can't 268 * use enums or #define constants because then the macros for subsetting matches 269 * wouldn't work. These tables are parsed by devmatch and others to connect 270 * modules with devices on the PCI bus. 271 */ 272struct pci_device_table { 273#if BYTE_ORDER == LITTLE_ENDIAN 274 uint16_t 275 match_flag_vendor:1, 276 match_flag_device:1, 277 match_flag_subvendor:1, 278 match_flag_subdevice:1, 279 match_flag_class:1, 280 match_flag_subclass:1, 281 match_flag_revid:1, 282 match_flag_unused:9; 283#else 284 uint16_t 285 match_flag_unused:9, 286 match_flag_revid:1, 287 match_flag_subclass:1, 288 match_flag_class:1, 289 match_flag_subdevice:1, 290 match_flag_subvendor:1, 291 match_flag_device:1, 292 match_flag_vendor:1; 293#endif 294 uint16_t vendor; 295 uint16_t device; 296 uint16_t subvendor; 297 uint16_t subdevice; 298 uint16_t class_id; 299 uint16_t subclass; 300 uint16_t revid; 301 uint16_t unused; 302 uintptr_t driver_data; 303 char *descr; 304}; 305 306#define PCI_DEV(v, d) \ 307 .match_flag_vendor = 1, .vendor = (v), \ 308 .match_flag_device = 1, .device = (d) 309#define PCI_SUBDEV(sv, sd) \ 310 .match_flag_subvendor = 1, .subvendor = (sv), \ 311 .match_flag_subdevice = 1, .subdevice = (sd) 312#define PCI_CLASS(x) \ 313 .match_flag_class = 1, .class_id = (x) 314#define PCI_SUBCLASS(x) \ 315 .match_flag_subclass = 1, .subclass = (x) 316#define PCI_REVID(x) \ 317 .match_flag_revid = 1, .revid = (x) 318#define PCI_DESCR(x) \ 319 .descr = (x) 320#define PCI_PNP_STR \ 321 "M16:mask;U16:vendor;U16:device;U16:subvendor;U16:subdevice;" \ 322 "U16:class;U16:subclass;U16:revid;" 323#define PCI_PNP_INFO(table) \ 324 MODULE_PNP_INFO(PCI_PNP_STR, pci, table, table, \ 325 sizeof(table) / sizeof(table[0])) 326 327const struct pci_device_table *pci_match_device(device_t child, 328 const struct pci_device_table *id, size_t nelt); 329#define PCI_MATCH(child, table) \ 330 pci_match_device(child, (table), nitems(table)); 331 332/* Only if the prerequisites are present */ 333#if defined(_SYS_BUS_H_) && defined(_SYS_PCIIO_H_) 334struct pci_devinfo { 335 STAILQ_ENTRY(pci_devinfo) pci_links; 336 struct resource_list resources; 337 pcicfgregs cfg; 338 struct pci_conf conf; 339}; 340#endif 341 342#ifdef _SYS_BUS_H_ 343 344#include "pci_if.h" 345 346enum pci_device_ivars { 347 PCI_IVAR_SUBVENDOR, 348 PCI_IVAR_SUBDEVICE, 349 PCI_IVAR_VENDOR, 350 PCI_IVAR_DEVICE, 351 PCI_IVAR_DEVID, 352 PCI_IVAR_CLASS, 353 PCI_IVAR_SUBCLASS, 354 PCI_IVAR_PROGIF, 355 PCI_IVAR_REVID, 356 PCI_IVAR_INTPIN, 357 PCI_IVAR_IRQ, 358 PCI_IVAR_DOMAIN, 359 PCI_IVAR_BUS, 360 PCI_IVAR_SLOT, 361 PCI_IVAR_FUNCTION, 362 PCI_IVAR_ETHADDR, 363 PCI_IVAR_CMDREG, 364 PCI_IVAR_CACHELNSZ, 365 PCI_IVAR_MINGNT, 366 PCI_IVAR_MAXLAT, 367 PCI_IVAR_LATTIMER 368}; 369 370/* 371 * Simplified accessors for pci devices 372 */ 373#define PCI_ACCESSOR(var, ivar, type) \ 374 __BUS_ACCESSOR(pci, var, PCI, ivar, type) 375 376PCI_ACCESSOR(subvendor, SUBVENDOR, uint16_t) 377PCI_ACCESSOR(subdevice, SUBDEVICE, uint16_t) 378PCI_ACCESSOR(vendor, VENDOR, uint16_t) 379PCI_ACCESSOR(device, DEVICE, uint16_t) 380PCI_ACCESSOR(devid, DEVID, uint32_t) 381PCI_ACCESSOR(class, CLASS, uint8_t) 382PCI_ACCESSOR(subclass, SUBCLASS, uint8_t) 383PCI_ACCESSOR(progif, PROGIF, uint8_t) 384PCI_ACCESSOR(revid, REVID, uint8_t) 385PCI_ACCESSOR(intpin, INTPIN, uint8_t) 386PCI_ACCESSOR(irq, IRQ, uint8_t) 387PCI_ACCESSOR(domain, DOMAIN, uint32_t) 388PCI_ACCESSOR(bus, BUS, uint8_t) 389PCI_ACCESSOR(slot, SLOT, uint8_t) 390PCI_ACCESSOR(function, FUNCTION, uint8_t) 391PCI_ACCESSOR(ether, ETHADDR, uint8_t *) 392PCI_ACCESSOR(cmdreg, CMDREG, uint8_t) 393PCI_ACCESSOR(cachelnsz, CACHELNSZ, uint8_t) 394PCI_ACCESSOR(mingnt, MINGNT, uint8_t) 395PCI_ACCESSOR(maxlat, MAXLAT, uint8_t) 396PCI_ACCESSOR(lattimer, LATTIMER, uint8_t) 397 398#undef PCI_ACCESSOR 399 400/* 401 * Operations on configuration space. 402 */ 403static __inline uint32_t 404pci_read_config(device_t dev, int reg, int width) 405{ 406 return PCI_READ_CONFIG(device_get_parent(dev), dev, reg, width); 407} 408 409static __inline void 410pci_write_config(device_t dev, int reg, uint32_t val, int width) 411{ 412 PCI_WRITE_CONFIG(device_get_parent(dev), dev, reg, val, width); 413} 414 415/* 416 * Ivars for pci bridges. 417 */ 418 419/*typedef enum pci_device_ivars pcib_device_ivars;*/ 420enum pcib_device_ivars { 421 PCIB_IVAR_DOMAIN, 422 PCIB_IVAR_BUS 423}; 424 425#define PCIB_ACCESSOR(var, ivar, type) \ 426 __BUS_ACCESSOR(pcib, var, PCIB, ivar, type) 427 428PCIB_ACCESSOR(domain, DOMAIN, uint32_t) 429PCIB_ACCESSOR(bus, BUS, uint32_t) 430 431#undef PCIB_ACCESSOR 432 433/* 434 * PCI interrupt validation. Invalid interrupt values such as 0 or 128 435 * on i386 or other platforms should be mapped out in the MD pcireadconf 436 * code and not here, since the only MI invalid IRQ is 255. 437 */ 438#define PCI_INVALID_IRQ 255 439#define PCI_INTERRUPT_VALID(x) ((x) != PCI_INVALID_IRQ) 440 441/* 442 * Convenience functions. 443 * 444 * These should be used in preference to manually manipulating 445 * configuration space. 446 */ 447static __inline int 448pci_enable_busmaster(device_t dev) 449{ 450 return(PCI_ENABLE_BUSMASTER(device_get_parent(dev), dev)); 451} 452 453static __inline int 454pci_disable_busmaster(device_t dev) 455{ 456 return(PCI_DISABLE_BUSMASTER(device_get_parent(dev), dev)); 457} 458 459static __inline int 460pci_enable_io(device_t dev, int space) 461{ 462 return(PCI_ENABLE_IO(device_get_parent(dev), dev, space)); 463} 464 465static __inline int 466pci_disable_io(device_t dev, int space) 467{ 468 return(PCI_DISABLE_IO(device_get_parent(dev), dev, space)); 469} 470 471static __inline int 472pci_get_vpd_ident(device_t dev, const char **identptr) 473{ 474 return(PCI_GET_VPD_IDENT(device_get_parent(dev), dev, identptr)); 475} 476 477static __inline int 478pci_get_vpd_readonly(device_t dev, const char *kw, const char **vptr) 479{ 480 return(PCI_GET_VPD_READONLY(device_get_parent(dev), dev, kw, vptr)); 481} 482 483/* 484 * Check if the address range falls within the VGA defined address range(s) 485 */ 486static __inline int 487pci_is_vga_ioport_range(rman_res_t start, rman_res_t end) 488{ 489 490 return (((start >= 0x3b0 && end <= 0x3bb) || 491 (start >= 0x3c0 && end <= 0x3df)) ? 1 : 0); 492} 493 494static __inline int 495pci_is_vga_memory_range(rman_res_t start, rman_res_t end) 496{ 497 498 return ((start >= 0xa0000 && end <= 0xbffff) ? 1 : 0); 499} 500 501/* 502 * PCI power states are as defined by ACPI: 503 * 504 * D0 State in which device is on and running. It is receiving full 505 * power from the system and delivering full functionality to the user. 506 * D1 Class-specific low-power state in which device context may or may not 507 * be lost. Buses in D1 cannot do anything to the bus that would force 508 * devices on that bus to lose context. 509 * D2 Class-specific low-power state in which device context may or may 510 * not be lost. Attains greater power savings than D1. Buses in D2 511 * can cause devices on that bus to lose some context. Devices in D2 512 * must be prepared for the bus to be in D2 or higher. 513 * D3 State in which the device is off and not running. Device context is 514 * lost. Power can be removed from the device. 515 */ 516#define PCI_POWERSTATE_D0 0 517#define PCI_POWERSTATE_D1 1 518#define PCI_POWERSTATE_D2 2 519#define PCI_POWERSTATE_D3 3 520#define PCI_POWERSTATE_UNKNOWN -1 521 522static __inline int 523pci_set_powerstate(device_t dev, int state) 524{ 525 return PCI_SET_POWERSTATE(device_get_parent(dev), dev, state); 526} 527 528static __inline int 529pci_get_powerstate(device_t dev) 530{ 531 return PCI_GET_POWERSTATE(device_get_parent(dev), dev); 532} 533 534static __inline int 535pci_find_cap(device_t dev, int capability, int *capreg) 536{ 537 return (PCI_FIND_CAP(device_get_parent(dev), dev, capability, capreg)); 538} 539 540static __inline int 541pci_find_next_cap(device_t dev, int capability, int start, int *capreg) 542{ 543 return (PCI_FIND_NEXT_CAP(device_get_parent(dev), dev, capability, start, 544 capreg)); 545} 546 547static __inline int 548pci_find_extcap(device_t dev, int capability, int *capreg) 549{ 550 return (PCI_FIND_EXTCAP(device_get_parent(dev), dev, capability, capreg)); 551} 552 553static __inline int 554pci_find_next_extcap(device_t dev, int capability, int start, int *capreg) 555{ 556 return (PCI_FIND_NEXT_EXTCAP(device_get_parent(dev), dev, capability, 557 start, capreg)); 558} 559 560static __inline int 561pci_find_htcap(device_t dev, int capability, int *capreg) 562{ 563 return (PCI_FIND_HTCAP(device_get_parent(dev), dev, capability, capreg)); 564} 565 566static __inline int 567pci_find_next_htcap(device_t dev, int capability, int start, int *capreg) 568{ 569 return (PCI_FIND_NEXT_HTCAP(device_get_parent(dev), dev, capability, 570 start, capreg)); 571} 572 573static __inline int 574pci_alloc_msi(device_t dev, int *count) 575{ 576 return (PCI_ALLOC_MSI(device_get_parent(dev), dev, count)); 577} 578 579static __inline int 580pci_alloc_msix(device_t dev, int *count) 581{ 582 return (PCI_ALLOC_MSIX(device_get_parent(dev), dev, count)); 583} 584 585static __inline void 586pci_enable_msi(device_t dev, uint64_t address, uint16_t data) 587{ 588 PCI_ENABLE_MSI(device_get_parent(dev), dev, address, data); 589} 590 591static __inline void 592pci_enable_msix(device_t dev, u_int index, uint64_t address, uint32_t data) 593{ 594 PCI_ENABLE_MSIX(device_get_parent(dev), dev, index, address, data); 595} 596 597static __inline void 598pci_disable_msi(device_t dev) 599{ 600 PCI_DISABLE_MSI(device_get_parent(dev), dev); 601} 602 603static __inline int 604pci_remap_msix(device_t dev, int count, const u_int *vectors) 605{ 606 return (PCI_REMAP_MSIX(device_get_parent(dev), dev, count, vectors)); 607} 608 609static __inline int 610pci_release_msi(device_t dev) 611{ 612 return (PCI_RELEASE_MSI(device_get_parent(dev), dev)); 613} 614 615static __inline int 616pci_msi_count(device_t dev) 617{ 618 return (PCI_MSI_COUNT(device_get_parent(dev), dev)); 619} 620 621static __inline int 622pci_msix_count(device_t dev) 623{ 624 return (PCI_MSIX_COUNT(device_get_parent(dev), dev)); 625} 626 627static __inline int 628pci_msix_pba_bar(device_t dev) 629{ 630 return (PCI_MSIX_PBA_BAR(device_get_parent(dev), dev)); 631} 632 633static __inline int 634pci_msix_table_bar(device_t dev) 635{ 636 return (PCI_MSIX_TABLE_BAR(device_get_parent(dev), dev)); 637} 638 639static __inline int 640pci_get_id(device_t dev, enum pci_id_type type, uintptr_t *id) 641{ 642 return (PCI_GET_ID(device_get_parent(dev), dev, type, id)); 643} 644 645/* 646 * This is the deprecated interface, there is no way to tell the difference 647 * between a failure and a valid value that happens to be the same as the 648 * failure value. 649 */ 650static __inline uint16_t 651pci_get_rid(device_t dev) 652{ 653 uintptr_t rid; 654 655 if (pci_get_id(dev, PCI_ID_RID, &rid) != 0) 656 return (0); 657 658 return (rid); 659} 660 661static __inline void 662pci_child_added(device_t dev) 663{ 664 665 return (PCI_CHILD_ADDED(device_get_parent(dev), dev)); 666} 667 668device_t pci_find_bsf(uint8_t, uint8_t, uint8_t); 669device_t pci_find_dbsf(uint32_t, uint8_t, uint8_t, uint8_t); 670device_t pci_find_device(uint16_t, uint16_t); 671device_t pci_find_class(uint8_t class, uint8_t subclass); 672device_t pci_find_class_from(uint8_t class, uint8_t subclass, device_t devfrom); 673 674/* Can be used by drivers to manage the MSI-X table. */ 675int pci_pending_msix(device_t dev, u_int index); 676 677int pci_msi_device_blacklisted(device_t dev); 678int pci_msix_device_blacklisted(device_t dev); 679 680void pci_ht_map_msi(device_t dev, uint64_t addr); 681 682device_t pci_find_pcie_root_port(device_t dev); 683int pci_get_relaxed_ordering_enabled(device_t dev); 684int pci_get_max_payload(device_t dev); 685int pci_get_max_read_req(device_t dev); 686void pci_restore_state(device_t dev); 687void pci_save_state(device_t dev); 688int pci_set_max_read_req(device_t dev, int size); 689int pci_power_reset(device_t dev); 690uint32_t pcie_read_config(device_t dev, int reg, int width); 691void pcie_write_config(device_t dev, int reg, uint32_t value, int width); 692uint32_t pcie_adjust_config(device_t dev, int reg, uint32_t mask, 693 uint32_t value, int width); 694void pcie_apei_error(device_t dev, int sev, uint8_t *aer); 695bool pcie_flr(device_t dev, u_int max_delay, bool force); 696int pcie_get_max_completion_timeout(device_t dev); 697bool pcie_wait_for_pending_transactions(device_t dev, u_int max_delay); 698int pcie_link_reset(device_t port, int pcie_location); 699 700void pci_print_faulted_dev(void); 701 702#endif /* _SYS_BUS_H_ */ 703 704/* 705 * cdev switch for control device, initialised in generic PCI code 706 */ 707extern struct cdevsw pcicdev; 708 709/* 710 * List of all PCI devices, generation count for the list. 711 */ 712STAILQ_HEAD(devlist, pci_devinfo); 713 714extern struct devlist pci_devq; 715extern uint32_t pci_generation; 716 717struct pci_map *pci_find_bar(device_t dev, int reg); 718struct pci_map *pci_first_bar(device_t dev); 719struct pci_map *pci_next_bar(struct pci_map *pm); 720int pci_bar_enabled(device_t dev, struct pci_map *pm); 721struct pcicfg_vpd *pci_fetch_vpd_list(device_t dev); 722 723#define VGA_PCI_BIOS_SHADOW_ADDR 0xC0000 724#define VGA_PCI_BIOS_SHADOW_SIZE 131072 725 726int vga_pci_is_boot_display(device_t dev); 727void * vga_pci_map_bios(device_t dev, size_t *size); 728void vga_pci_unmap_bios(device_t dev, void *bios); 729int vga_pci_repost(device_t dev); 730 731/** 732 * Global eventhandlers invoked when PCI devices are added or removed 733 * from the system. 734 */ 735typedef void (*pci_event_fn)(void *arg, device_t dev); 736EVENTHANDLER_DECLARE(pci_add_device, pci_event_fn); 737EVENTHANDLER_DECLARE(pci_delete_device, pci_event_fn); 738 739#endif /* _PCIVAR_H_ */ 740