1.\" $OpenBSD: pci.4,v 1.392 2021/10/21 18:36:41 bluhm Exp $ 2.\" $NetBSD: pci.4,v 1.29 2000/04/01 00:32:23 tsarna Exp $ 3.\" 4.\" Copyright (c) 2000 Theo de Raadt. All rights reserved. 5.\" Copyright (c) 1997 Jason R. Thorpe. All rights reserved. 6.\" Copyright (c) 1997 Jonathan Stone 7.\" All rights reserved. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgements: 19.\" This product includes software developed by Jonathan Stone 20.\" 4. The name of the author may not be used to endorse or promote products 21.\" derived from this software without specific prior written permission 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33.\" 34.Dd $Mdocdate: October 21 2021 $ 35.Dt PCI 4 36.Os 37.Sh NAME 38.Nm pci 39.Nd introduction to PCI bus support 40.Sh SYNOPSIS 41.Cd "# alpha" 42.Cd "pci* at apecs?" 43.Cd "pci* at cia?" 44.Cd "pci* at irongate?" 45.Cd "pci* at lca?" 46.Cd "pci* at tsp?" 47.Cd "pci* at mcpcia?" 48.Pp 49.Cd "# amd64, i386" 50.Cd "pci* at mainbus0" 51.Pp 52.Cd "# arm64" 53.Cd "pci* at acpipci?" 54.Cd "pci* at bcmpcie?" 55.Cd "pci* at dwpcie?" 56.Cd "pci* at mvkpcie?" 57.Cd "pci* at pciecam?" 58.Cd "pci* at rkpcie?" 59.Pp 60.Cd "# armv7" 61.Cd "pci* at mvpcie?" 62.Cd "pci* at pciecam?" 63.Pp 64.Cd "# hppa" 65.Cd "pci* at dino?" 66.Cd "pci* at elroy?" 67.Pp 68.Cd "# landisk" 69.Cd "pci* at shpcic?" 70.Pp 71.Cd "# loongson" 72.Cd "pci* at bonito?" 73.Cd "pci* at htb?" 74.Pp 75.Cd "# macppc" 76.Cd "pci* at mpcpcibr?" 77.Cd "pci* at ht?" 78.Cd "pci* at hpb?" 79.Pp 80.Cd "# octeon" 81.Cd "pci* at octpcie?" 82.Pp 83.Cd "# riscv64" 84.Cd "pci* at dwpcie?" 85.Cd "pci* at pciecam?" 86.Pp 87.Cd "# sparc64" 88.Cd "pci* at psycho?" 89.Cd "pci* at schizo?" 90.Cd "pci* at pyro?" 91.Cd "pci* at vpci?" 92.Pp 93.Cd "# all architectures" 94.Cd "pci* at pchb?" 95.Cd "pci* at ppb?" 96.Sh DESCRIPTION 97The system includes a machine-independent 98.Tn PCI 99bus subsystem and 100several machine-independent 101.Tn PCI 102device drivers. 103.Pp 104Note that interrupt mappings on the i386 may require that you configure 105your BIOS to reserve sufficient interrupts as "PCI/ISAPnP" so that there 106are sufficient interrupts remaining to configure the discovered PCI 107devices. 108For more information, see 109.Xr pcibios 4 . 110.Pp 111.Ox 112provides support for the following devices. 113Note that not all architectures support all devices. 114.Ss SCSI host adapters 115.Bl -tag -width 10n -offset ind -compact 116.It Xr adv 4 , Xr adw 4 117AdvanSys PCI SCSI interface 118.It Xr ahc 4 119Adaptec VL/EISA/PCI SCSI interface 120.It Xr ahd 4 121Adaptec PCI/PCI-X AIC79xx-based Ultra320 SCSI interface 122.It Xr iha 4 123Initio INIC-940/950 based PCI SCSI interface 124.It Xr mpi 4 125LSI Logic Fusion-MPT Message Passing Interface 126.It Xr mpii 4 127LSI Logic Fusion-MPT Message Passing Interface II 128.It Xr nvme 4 129Non-Volatile Memory Host Controller Interface 130.It Xr pcscp 4 131Advanced Micro Devices Am53c974 PCscsi-PCI SCSI interface 132.It Xr qla 4 133QLogic ISP2100/2200/2300 Fibre Channel controller 134.It Xr qle 4 135QLogic ISP2400/2500 Fibre Channel controller 136.It Xr qlw 4 137QLogic ISP1000/1020/1x40/1x80/1x160 SCSI controller 138.It Xr siop 4 139LSI/Symbios Logic/NCR 53c8xx SCSI interface 140.It Xr trm 4 141TRM-S1040 based PCI SCSI interface 142.It Xr vmwpvs 4 143VMware Paravirtual SCSI 144.El 145.Ss IDE disk controllers 146.Bl -tag -width 10n -offset ind -compact 147.It Xr ahci 4 148Advanced Host Controller Interface for Serial ATA 149.It Xr jmb 4 150JMicron JMB36x SATA II and PATA Host Controller 151.It Xr pciide 4 152PCI IDE controller driver 153.It Xr sili 4 154Silicon Image 3124/3132/3531 SATA controller 155.El 156.Ss RAID and cache controllers 157.Bl -tag -width 10n -offset ind -compact 158.It Xr aac 4 159Adaptec SAS/SATA/SCSI RAID controller 160.It Xr ami 4 161American Megatrends Inc. MegaRAID PATA/SATA/SCSI RAID controller 162.It Xr arc 4 163Areca Technology Corporation SAS/SATA RAID controller 164.It Xr cac 4 165Compaq Smart Array 2/3/4 SCSI RAID controller 166.It Xr ciss 4 167Compaq Smart Array SAS/SATA/SCSI RAID controller 168.It Xr gdt 4 169ICP-Vortex and Intel GDT SATA/SCSI RAID controller 170.It Xr ips 4 171IBM SATA/SCSI ServeRAID controller 172.It Xr mfi 4 173LSI Logic & Dell MegaRAID SAS RAID controller 174.It Xr mfii 4 175LSI Logic MegaRAID SAS Fusion RAID controller 176.It Xr twe 4 1773ware 5000/6000/7000/8000 series PATA/SATA RAID controller 178.El 179.Ss Wired network interfaces 180.Bl -tag -width 10n -offset ind -compact 181.It Xr age 4 182Attansic L1 10/100/1Gb Ethernet device 183.It Xr alc 4 184Atheros AR813x/AR815x/AR816x/AR817x 10/100/1Gb Ethernet device 185.It Xr ale 4 186Atheros AR8121/AR8113/AR8114 10/100/1Gb Ethernet device 187.It Xr aq 4 188Aquantia AQC1xx 1Gb/2.5Gb/5Gb/10Gb PCIe Ethernet device 189.It Xr bce 4 190Broadcom BCM4401 10/100 Ethernet device 191.It Xr bge 4 192Broadcom BCM57xx/BCM590x 10/100/1Gb Ethernet device 193.It Xr bnx 4 194Broadcom NetXtreme II 10/100/1Gb Ethernet device 195.It Xr bnxt 4 196Broadcom NetXtreme-C/E 10Gb/25Gb/40Gb/50Gb Ethernet device 197.It Xr cas 4 198Sun Cassini 10/100/1Gb Ethernet device 199.It Xr dc 4 200DEC/Intel 21140/21142/21143/21145 and clones 10/100 Ethernet device 201.It Xr de 4 202DEC DC21x4x (Tulip) 10/100 Ethernet device 203.It Xr em 4 204Intel PRO/1000 10/100/1Gb Ethernet device 205.\" .It Xr en 4 206.\" Midway-based Efficient Networks Inc.\& 207.\" and Adaptec ATM interfaces 208.It Xr ep 4 2093Com EtherLink III and Fast EtherLink III 10/100 Ethernet device 210.It Xr epic 4 211SMC 83C170 (EPIC/100) 10/100 Ethernet device 212.It Xr et 4 213Agere/LSI ET1310 10/100/1Gb Ethernet device 214.It Xr fxp 4 215Intel EtherExpress PRO/100 10/100 Ethernet device 216.It Xr gem 4 217GEM 10/100/1Gb Ethernet device 218.It Xr hme 4 219Sun Happy Meal 10/100 Ethernet device 220.It Xr iavf 4 221Intel Ethernet Adaptive Virtual Function device 222.It Xr ix 4 223Intel 82598/82599/X540/X550 PCI Express 100/1Gb/10Gb Ethernet device 224.It Xr ixgb 4 225Intel PRO/10GbE 10Gb Ethernet device 226.It Xr ixl 4 227Intel Ethernet 700 series Ethernet device 228.It Xr jme 4 229JMicron JMC25x/JMC26x 10/100/1Gb Ethernet device 230.It Xr lge 4 231Level 1 LXT1001 NetCellerator PCI 1Gb Ethernet device 232.It Xr lii 4 233Attansic L2 10/100 Ethernet device 234.It Xr mcx 4 235Mellanox 5th generation Ethernet device 236.It Xr msk 4 237Marvell Yukon-2 10/100/1Gb Ethernet device 238.It Xr mtd 4 239Myson Technology MTD800/MTD803/MTD891 10/100/1Gb Ethernet device 240.It Xr myx 4 241Myricom Myri-10G PCI Express 10Gb Ethernet device 242.It Xr ne 4 243NE2000 and compatible 10/100 Ethernet device 244.It Xr nep 4 245Sun Neptune 10Gb Ethernet device 246.It Xr nfe 4 247NVIDIA nForce MCP 10/100/1Gb Ethernet device 248.It Xr nge 4 249National Semiconductor PCI 10/100/1Gb Ethernet device 250.It Xr oce 4 251Emulex OneConnect 10Gb Ethernet device 252.It Xr pcn 4 253AMD PCnet-PCI 10/100 Ethernet device 254.It Xr re 4 255Realtek 8139C+/8169/816xS/811xS/8168/810xE 10/100/1Gb Ethernet device 256.It Xr rge 4 257Realtek 8125/8125B PCI Express 10/100/1Gb/2.5Gb Ethernet device 258.It Xr rl 4 259Realtek 8129/8139 10/100 Ethernet device 260.It Xr se 4 261SiS 190/191 10/100/1Gb Ethernet device 262.It Xr sf 4 263Adaptec AIC-6915 "Starfire" PCI 10/100 Ethernet device 264.It Xr sis 4 265SiS 900, SiS 7016, and NS DP83815/6 10/100 Ethernet device 266.It Xr sk 4 267SysKonnect XMAC II and Marvell Yukon 10/100/1Gb Ethernet device 268.It Xr ste 4 269Sundance Technologies ST201 10/100 Ethernet device 270.It Xr stge 4 271Sundance/Tamarack TC9021 1Gb Ethernet device 272.It Xr tht 4 273Tehuti Networks 10Gb Ethernet device 274.It Xr ti 4 275Alteon Networks Tigon I and II 1Gb Ethernet device 276.It Xr tl 4 277Texas Instruments ThunderLAN 10/100 Ethernet device 278.It Xr txp 4 2793Com 3XP Typhoon/Sidewinder (3CR990) 10/100 Ethernet device 280.It Xr vge 4 281VIA Velocity 10/100/1Gb Ethernet device 282.It Xr vic 4 283VMware VMXnet Virtual Interface Controller device 284.It Xr vmx 4 285VMware VMXNET3 Virtual Interface Controller device 286.It Xr vr 4 287VIA Rhine I/II/III 10/100 Ethernet device 288.It Xr vte 4 289RDC R6040 10/100 Ethernet device 290.It Xr wb 4 291Winbond W89C840F 10/100 Ethernet device 292.It Xr xge 4 293Neterion Xframe/Xframe II 10Gb Ethernet device 294.It Xr xl 4 2953Com EtherLink XL and Fast EtherLink XL 10/100 Ethernet device 296.El 297.Ss Wireless network interfaces 298.Bl -tag -width 10n -offset ind -compact 299.It Xr acx 4 300TI ACX100/ACX111 IEEE 802.11a/b/g wireless network device 301.It Xr an 4 302Aironet Communications 4500/4800 IEEE 802.11FH/b wireless network device 303.It Xr ath 4 304Atheros IEEE 802.11a/b/g wireless network device with GPIO 305.It Xr athn 4 306Atheros IEEE 802.11a/b/g/n wireless network device 307.It Xr atw 4 308ADMtek ADM8211 IEEE 802.11b wireless network device 309.It Xr bwfm 4 310Broadcom and Cypress IEEE 802.11a/ac/b/g/n wireless network device 311.It Xr bwi 4 312Broadcom AirForce IEEE 802.11b/g wireless network device 313.It Xr ipw 4 314Intel PRO/Wireless 2100 IEEE 802.11b wireless network device 315.It Xr iwi 4 316Intel 317PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11a/b/g wireless network device 318.It Xr iwn 4 319Intel WiFi Link and Centrino IEEE 802.11a/b/g/n wireless network devices 320.It Xr iwm 4 321Intel 7000/8000/9000 IEEE 802.11a/ac/b/g/n wireless network devices 322.It Xr iwx 4 323Intel AX200/AX201 IEEE 802.11a/ac/ax/b/g/n wireless network devices 324.It Xr malo 4 325Marvell Libertas IEEE 802.11b/g wireless network device 326.It Xr pgt 4 327Conexant/Intersil Prism GT Full-MAC IEEE 802.11a/b/g wireless network device 328.It Xr ral 4 329Ralink Technology/MediaTek IEEE 802.11a/b/g/n wireless network device 330.It Xr rtw 4 331Realtek RTL8180L IEEE 802.11b wireless network device 332.It Xr rtwn 4 333Realtek RTL8188CE/RTL8188EE/RTL8192CE/RTL8723AE PCIe IEEE 802.11b/g/n wireless 334network device 335.It Xr wi 4 336WaveLAN/IEEE, PRISM 2-3, and Spectrum24 IEEE 802.11b wireless network 337device 338.It Xr wpi 4 339Intel PRO/Wireless 3945ABG IEEE 802.11a/b/g wireless network device 340.El 341.Ss Cryptography accelerators 342.Bl -tag -width 10n -offset ind -compact 343.It Xr ccp 4 344AMD cryptographic co-processor 345.It Xr glxsb 4 346Geode LX Security Block crypto accelerator 347.El 348.Ss Serial interfaces 349.Bl -tag -width 10n -offset ind -compact 350.It Xr cy 4 351Cyclades Cyclom-4Y, -8Y, and -16Y asynchronous serial communications devices 352.It Xr cz 4 353Cyclades-Z series multi-port serial adapter device 354.It Xr puc 4 355PCI 356.Dq universal 357communications card driver 358.El 359.Ss Display adapters 360.Bl -tag -width 10n -offset ind -compact 361.It Xr sti 4 362HP Standard Text Interface 363.It Xr tga 4 364DECchip 21030 (TGA) graphics driver 365.It Xr vga 4 366VGA graphics cards 367.El 368.Ss Audio devices 369.Bl -tag -width 10n -offset ind -compact 370.It Xr auacer 4 371Acer Labs I/O Controller Hub integrated AC'97 audio device 372.It Xr auglx 4 373AMD Geode LX CS5536 integrated AC'97 audio device 374.It Xr auich 4 375Intel ICH integrated AC'97 audio device 376.It Xr auixp 4 377ATI SB200/SB300/SB400/SB600 integrated AC'97 audio device 378.It Xr autri 4 379Trident 4DWAVE-DX/NX, SiS 7018, ALi M5451 audio device 380.It Xr auvia 4 381VIA VT82C686A/VT8233/VT8235/VT8237 integrated AC'97 audio device 382.It Xr azalia 4 383generic High Definition Audio device 384.It Xr clcs 4 385Cirrus Logic CS4280/CS4610/CS4615 audio device 386.It Xr clct 4 387Cirrus Logic CS4281 audio device 388.It Xr cmpci 4 389C-Media CMI8338/CMI8738/CMI8768 PCI audio device 390.It Xr eap 4 391Ensoniq AudioPCI audio device 392.It Xr emu 4 393Creative Labs SBLive!, PCI 512, and Audigy audio device 394.It Xr envy 4 395VIA Envy24 audio device 396.It Xr esa 4 397ESS Technology Allegro-1/Maestro-3 family audio device 398.It Xr eso 4 399ESS Technology Solo-1 PCI AudioDrive audio device 400.It Xr fms 4 401Forte Media FM801 audio device 402.It Xr maestro 4 403ESS Maestro 1 and 2 audio device 404.It Xr neo 4 405NeoMagic 256AV/ZX audio device 406.It Xr sv 4 407S3 SonicVibes audio device 408.It Xr yds 4 409Yamaha DS-XG audio device 410.El 411.Ss Time receiver devices 412.Bl -tag -width 10n -offset ind -compact 413.It Xr mbg 4 414Meinberg Funkuhren timedelta sensor 415.El 416.Ss Radio receiver devices 417.Bl -tag -width 10n -offset ind -compact 418.It Xr fms 4 419Forte Media FM801 audio device 420.El 421.Ss Hardware Sensors 422.Bl -tag -width 10n -offset ind -compact 423.It Xr berkwdt 4 424Berkshire Products watchdog timer device 425.It Xr elansc 4 426AMD Elan SC520 System Controller with watchdog timer and GPIO 427.It Xr geodesc 4 428Geode SC1100/SCx200 IAOC watchdog timer device 429.It Xr ichwdt 4 430Intel 6300ESB ICH watchdog timer device 431.It Xr itherm 4 432Intel 3400 temperature sensor 433.It Xr kate 4 434AMD K8 temperature sensor 435.It Xr km 4 436AMD K10 temperature sensor 437.It Xr ksmn 4 438AMD K17 temperature sensor over SMN 439.It Xr pchtemp 4 440Intel PCH temperature sensor 441.It Xr pwdog 4 442Quancom PWDOG1 watchdog timer device 443.It Xr viapm 4 444VIA SMBus controller and VIA VT82C686A/VT8231 hardware monitor 445.It Xr wdt 4 446ICS PCI-WDT500/501 watchdog timer device 447.El 448.Ss Miscellaneous devices 449.Bl -tag -width "amdpcib(4)" -offset ind -compact 450.It Xr alipm 4 451Acer Labs M7101 SMBus controller 452.It Xr amas 4 453AMD memory address map 454.It Xr amdiic 4 455AMD-8111 SMBus controller 456.It Xr amdpcib 4 457AMD-8111 series LPC bridge and timecounter 458.It Xr amdpm 4 459AMD-756/766/768/8111 Power Management and SMBus controller 460.It Xr bktr 4 461Brooktree Bt848/849/878/879 462.Tn PCI 463TV tuners and video capture boards 464.It Xr cbb 4 465.Tn PCI 466Yenta compatible 467.Tn CardBus 468bridges 469.It Xr ehci 4 470USB Enhanced Host Controller Interface 471.It Xr gcu 4 472Intel EP80579 Global Configuration Unit 473.It Xr glxpcib 4 474CS5536 PCI-ISA Bridge with timecounter, watchdog timer, and GPIO 475.It Xr gscpcib 4 476National Semiconductor Geode SC1100 PCI-ISA bridge with GPIO 477.It Xr hpb 4 478.Tn HyperTransport Ns \- Ns Tn PCI bridge 479.It Xr ichiic 4 480Intel ICH SMBus controller 481.It Xr nviic 4 482NVIDIA nForce2/3/4 SMBus controller 483.It Xr ohci 4 484USB Open Host Controller Interface 485.It Xr pcib 4 486PCI-ISA bridge 487.It Xr pcic 4 488.Tn PCI 489.Tn PCMCIA 490controllers, including the Cirrus Logic GD6729 491.It Xr piixpm 4 492Intel PIIX SMBus controller 493.It Xr ppb 4 494.Tn PCI Ns \- Ns Tn PCI bridge 495.It Xr rtsx 4 496Realtek SD card reader 497.It Xr sdhc 4 498SD Host Controller 499.It Xr ssio 4 500National Semiconductor PC87560 Legacy IO 501.It Xr tcpcib 4 502Intel Atom E600 series LPC bridge and watchdog timer 503.It Xr uhci 4 504USB Universal Host Controller Interface 505.It Xr viapm 4 506VIA SMBus controller 507.It Xr virtio 4 508VirtIO support driver 509.El 510.Sh IOCTLS 511If the kernel is compiled with the 512.Va USER_PCICONF 513kernel option, the following 514.Xr ioctl 2 515calls are supported by the 516.Nm 517driver. 518They are defined in the header file 519.In sys/pciio.h . 520.Bl -tag -width Ds 521.It PCIOCREAD Fa "struct pci_io *" 522This 523.Xr ioctl 2 524reads the 525.Tn PCI 526configuration registers specified by the passed-in 527.Va pci_io 528structure. 529The 530.Va pci_io 531structure consists of the following fields: 532.Bl -tag -width pi_width 533.It pi_sel 534A 535.Va pcisel 536structure which specifies the bus, slot and function the user would like to 537query. 538.It pi_reg 539The 540.Tn PCI 541configuration register the user would like to access. 542.It pi_width 543The width, in bytes, of the data the user would like to read. 544This value can be only 4. 545.It pi_data 546The data returned by the kernel. 547.El 548.It PCIOCWRITE Fa "struct pci_io *" 549This 550.Xr ioctl 2 551allows users to write to the 552.Tn PCI 553device specified in the passed-in 554.Va pci_io 555structure. 556The 557.Va pci_io 558structure is described above. 559The limitations on data width described for 560reading registers, above, also apply to writing 561.Tn PCI 562configuration registers. 563.It PCIOCGETROM Fa "struct pci_rom *" 564This 565.Xr ioctl 2 566allows users to read the contents of the 567.Tn PCI 568ROM specified in the passed-in 569.Va pci_rom 570structure. 571The 572.Va pci_rom 573structure consists of the following fields: 574.Bl -tag -width pr_romlen 575.It pr_sel 576A 577.Va pcisel 578structure which specifies the bus, slot and function the user would like to 579query. 580.It pr_romlen 581Size of the buffer to store the contents of the ROM. 582Upon return, this field will contain the size of the ROM 583.It pr_rom 584The address of the buffer to store the contents of the ROM. 585.El 586.Pp 587If the ROM is larger than the specified buffer size, 588.Dv ENOMEM 589will be returned. 590.El 591.Sh FILES 592.Bl -tag -width /dev/pci* -compact 593.It Pa /dev/pci* 594Character device for the 595.Nm 596driver. 597.El 598.Sh SEE ALSO 599.Xr intro 4 , 600.Xr pcidump 8 601.Sh HISTORY 602The machine-independent 603.Tn PCI 604subsystem appeared in 605.Ox 1.2 . 606