1.\" $OpenBSD: pci.4,v 1.366 2018/10/01 22:37:18 jmatthew 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 1 2018 $ 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 dwpcie?" 55.Cd "pci* at pciecam?" 56.Cd "pci* at rkpcie?" 57.Pp 58.Cd "# armv7" 59.Cd "pci* at mvpcie?" 60.Cd "pci* at pciecam?" 61.Pp 62.Cd "# hppa" 63.Cd "pci* at dino?" 64.Cd "pci* at elroy?" 65.Pp 66.Cd "# landisk" 67.Cd "pci* at shpcic?" 68.Pp 69.Cd "# loongson" 70.Cd "pci* at bonito?" 71.Cd "pci* at htb?" 72.Pp 73.Cd "# macppc" 74.Cd "pci* at mpcpcibr?" 75.Cd "pci* at ht?" 76.Cd "pci* at hpb?" 77.Pp 78.Cd "# sgi" 79.Cd "pci* at macepcibr?" 80.Cd "pci* at xbridge?" 81.Pp 82.Cd "# sparc64" 83.Cd "pci* at psycho?" 84.Cd "pci* at schizo?" 85.Cd "pci* at pyro?" 86.Cd "pci* at vpci?" 87.Pp 88.Cd "# all architectures" 89.Cd "pci* at pchb?" 90.Cd "pci* at ppb?" 91.Sh DESCRIPTION 92The system includes a machine-independent 93.Tn PCI 94bus subsystem and 95several machine-independent 96.Tn PCI 97device drivers. 98.Pp 99Note that interrupt mappings on the i386 may require that you configure 100your BIOS to reserve sufficient interrupts as "PCI/ISAPnP" so that there 101are sufficient interrupts remaining to configure the discovered PCI 102devices. 103For more information, see 104.Xr pcibios 4 . 105.Pp 106.Ox 107provides support for the following devices. 108Note that not all architectures support all devices. 109.Ss SCSI host adapters 110.Bl -tag -width 10n -offset ind -compact 111.It Xr adv 4 , Xr adw 4 112AdvanSys PCI SCSI interface 113.It Xr ahc 4 114Adaptec VL/EISA/PCI SCSI interface 115.It Xr ahd 4 116Adaptec PCI/PCI-X AIC79xx-based Ultra320 SCSI interface 117.It Xr iha 4 118Initio INIC-940/950 based PCI SCSI interface 119.It Xr mpi 4 120LSI Logic Fusion-MPT Message Passing Interface 121.It Xr mpii 4 122LSI Logic Fusion-MPT Message Passing Interface II 123.It Xr nvme 4 124Non-Volatile Memory Host Controller Interface 125.It Xr pcscp 4 126Advanced Micro Devices Am53c974 PCscsi-PCI SCSI interface 127.It Xr qla 4 128QLogic ISP2100/2200/2300 Fibre Channel controller 129.It Xr qle 4 130QLogic ISP2400/2500 Fibre Channel controller 131.It Xr qlw 4 132QLogic ISP1000/1020/1x40/1x80/1x160 SCSI controller 133.It Xr siop 4 134LSI/Symbios Logic/NCR 53c8xx SCSI interface 135.It Xr sli 4 136Emulex LightPulse Fibre Channel SCSI interface 137.It Xr trm 4 138TRM-S1040 based PCI SCSI interface 139.It Xr vmwpvs 4 140VMware Paravirtual SCSI 141.El 142.Ss IDE disk controllers 143.Bl -tag -width 10n -offset ind -compact 144.It Xr ahci 4 145Advanced Host Controller Interface for Serial ATA 146.It Xr jmb 4 147JMicron JMB36x SATA II and PATA Host Controller 148.It Xr pciide 4 149PCI IDE controller driver 150.It Xr sili 4 151Silicon Image 3124/3132/3531 SATA controller 152.El 153.Ss RAID and cache controllers 154.Bl -tag -width 10n -offset ind -compact 155.It Xr aac 4 156Adaptec SAS/SATA/SCSI RAID controller 157.It Xr ami 4 158American Megatrends Inc. MegaRAID PATA/SATA/SCSI RAID controller 159.It Xr arc 4 160Areca Technology Corporation SAS/SATA RAID controller 161.It Xr cac 4 162Compaq Smart Array 2/3/4 SCSI RAID controller 163.It Xr ciss 4 164Compaq Smart Array SAS/SATA/SCSI RAID controller 165.It Xr dpt 4 166DPT EATA SCSI RAID controller 167.It Xr gdt 4 168ICP-Vortex and Intel GDT SATA/SCSI RAID controller 169.It Xr ips 4 170IBM SATA/SCSI ServeRAID controller 171.It Xr mfi 4 172LSI Logic & Dell MegaRAID SAS RAID controller 173.It Xr mfii 4 174LSI Logic MegaRAID SAS Fusion RAID controller 175.It Xr twe 4 1763ware 5000/6000/7000/8000 series PATA/SATA RAID controller 177.El 178.Ss Wired network interfaces 179.Bl -tag -width 10n -offset ind -compact 180.It Xr age 4 181Attansic L1 10/100/Gigabit Ethernet device 182.It Xr alc 4 183Atheros AR813x/AR815x 10/100/Gigabit Ethernet device 184.It Xr ale 4 185Atheros AR8121/AR8113/AR8114 10/100/Gigabit Ethernet device 186.It Xr bce 4 187Broadcom BCM4401 10/100 Ethernet device 188.It Xr bge 4 189Broadcom BCM57xx/BCM590x 10/100/Gigabit Ethernet device 190.It Xr bnx 4 191Broadcom NetXtreme II 10/100/Gigabit Ethernet device 192.It Xr bnxt 4 193Broadcom NetXtreme-C/E 10/25/40/50Gb Ethernet device 194.It Xr cas 4 195Sun Cassini 10/100/Gigabit Ethernet device 196.It Xr dc 4 197DEC/Intel 21140/21142/21143/21145 and clones 10/100 Ethernet device 198.It Xr de 4 199DEC DC21x4x (Tulip) 10/100 Ethernet device 200.It Xr em 4 201Intel PRO/1000 10/100/Gigabit Ethernet device 202.\" .It Xr en 4 203.\" Midway-based Efficient Networks Inc.\& 204.\" and Adaptec ATM interfaces 205.It Xr ep 4 2063Com EtherLink III and Fast EtherLink III 10/100 Ethernet device 207.It Xr epic 4 208SMC 83C170 (EPIC/100) 10/100 Ethernet device 209.It Xr et 4 210Agere/LSI ET1310 10/100/Gigabit Ethernet device 211.It Xr fxp 4 212Intel EtherExpress PRO/100 10/100 Ethernet device 213.It Xr gem 4 214GEM 10/100/Gigabit Ethernet device 215.It Xr hme 4 216Sun Happy Meal 10/100 Ethernet device 217.It Xr ix 4 218Intel 82598/82599/X540/X550 PCI Express 10Gb Ethernet device 219.It Xr ixgb 4 220Intel PRO/10GbE 10Gb Ethernet device 221.It Xr jme 4 222JMicron JMC25x/JMC26x 10/100/Gigabit Ethernet device 223.It Xr lge 4 224Level 1 LXT1001 NetCellerator PCI Gigabit Ethernet device 225.It Xr lii 4 226Attansic L2 10/100 Ethernet device 227.It Xr msk 4 228Marvell Yukon-2 10/100/Gigabit Ethernet device 229.It Xr mtd 4 230Myson Technology MTD800/MTD803/MTD891 10/100/Gigabit Ethernet device 231.It Xr myx 4 232Myricom Myri-10G PCI Express 10Gb Ethernet device 233.It Xr ne 4 234NE2000 and compatible 10/100 Ethernet device 235.It Xr nep 4 236Sun Neptune 10Gb Ethernet device 237.It Xr nfe 4 238NVIDIA nForce MCP 10/100/Gigabit Ethernet device 239.It Xr nge 4 240National Semiconductor PCI 10/100/Gigabit Ethernet device 241.It Xr oce 4 242Emulex OneConnect 10Gb Ethernet device 243.It Xr pcn 4 244AMD PCnet-PCI 10/100 Ethernet device 245.It Xr re 4 246Realtek 8139C+/8169/816xS/811xS/8168/810xE 10/100/Gigabit Ethernet device 247.It Xr rl 4 248Realtek 8129/8139 10/100 Ethernet device 249.It Xr se 4 250SiS 190/191 10/100/Gigabit Ethernet device 251.It Xr sf 4 252Adaptec AIC-6915 "Starfire" PCI 10/100 Ethernet device 253.It Xr sis 4 254SiS 900, SiS 7016, and NS DP83815/6 10/100 Ethernet device 255.It Xr sk 4 256SysKonnect XMAC II and Marvell Yukon 10/100/Gigabit Ethernet device 257.It Xr ste 4 258Sundance Technologies ST201 10/100 Ethernet device 259.It Xr stge 4 260Sundance/Tamarack TC9021 Gigabit Ethernet device 261.It Xr tht 4 262Tehuti Networks 10Gb Ethernet device 263.It Xr ti 4 264Alteon Networks Tigon I and II Gigabit Ethernet device 265.It Xr tl 4 266Texas Instruments ThunderLAN 10/100 Ethernet device 267.It Xr txp 4 2683Com 3XP Typhoon/Sidewinder (3CR990) 10/100 Ethernet device 269.It Xr vge 4 270VIA Velocity 10/100/Gigabit Ethernet device 271.It Xr vic 4 272VMware VMXnet Virtual Interface Controller device 273.It Xr vmx 4 274VMware VMXNET3 Virtual Interface Controller device 275.It Xr vr 4 276VIA Rhine I/II/III 10/100 Ethernet device 277.It Xr vte 4 278RDC R6040 10/100 Ethernet device 279.It Xr wb 4 280Winbond W89C840F 10/100 Ethernet device 281.It Xr xge 4 282Neterion Xframe/Xframe II 10Gb Ethernet device 283.It Xr xl 4 2843Com EtherLink XL and Fast EtherLink XL 10/100 Ethernet device 285.El 286.Ss Wireless network interfaces 287.Bl -tag -width 10n -offset ind -compact 288.It Xr acx 4 289TI ACX100/ACX111 IEEE 802.11a/b/g wireless network device 290.It Xr an 4 291Aironet Communications 4500/4800 IEEE 802.11FH/b wireless network device 292.It Xr ath 4 293Atheros IEEE 802.11a/b/g wireless network device with GPIO 294.It Xr athn 4 295Atheros IEEE 802.11a/b/g/n wireless network device 296.It Xr atw 4 297ADMtek ADM8211 IEEE 802.11b wireless network device 298.It Xr bwfm 4 299Broadcom and Cypress IEEE 802.11a/ac/b/g/n wireless network device 300.It Xr bwi 4 301Broadcom AirForce IEEE 802.11b/g wireless network device 302.It Xr ipw 4 303Intel PRO/Wireless 2100 IEEE 802.11b wireless network device 304.It Xr iwi 4 305Intel 306PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11a/b/g wireless network device 307.It Xr iwn 4 308Intel WiFi Link and Centrino IEEE 802.11a/b/g/n wireless network devices 309.It Xr iwm 4 310Intel 7000/8000 IEEE 802.11a/ac/b/g/n wireless network devices 311.It Xr malo 4 312Marvell Libertas IEEE 802.11b/g wireless network device 313.It Xr pgt 4 314Conexant/Intersil Prism GT Full-MAC IEEE 802.11a/b/g wireless network device 315.It Xr ral 4 316Ralink Technology/MediaTek IEEE 802.11a/b/g/n wireless network device 317.It Xr rtw 4 318Realtek RTL8180L IEEE 802.11b wireless network device 319.It Xr rtwn 4 320Realtek RTL8188CE/RTL8188EE/RTL8192CE/RTL8723AE PCIe IEEE 802.11b/g/n wireless 321network device 322.It Xr wi 4 323WaveLAN/IEEE, PRISM 2-3, and Spectrum24 IEEE 802.11b wireless network 324device 325.It Xr wpi 4 326Intel PRO/Wireless 3945ABG IEEE 802.11a/b/g wireless network device 327.El 328.Ss Cryptography accelerators 329.Bl -tag -width 10n -offset ind -compact 330.It Xr ccp 4 331AMD Cryptographic Co-processor 332.It Xr glxsb 4 333Geode LX Security Block crypto accelerator 334.It Xr hifn 4 335Hifn 7751/7811/7951/7955/7956/9751 crypto accelerator 336.It Xr safe 4 337SafeNet crypto accelerator 338.It Xr ubsec 4 339Broadcom and BlueSteel uBsec 5x0x crypto accelerator 340.El 341.Ss Serial interfaces 342.Bl -tag -width 10n -offset ind -compact 343.It Xr cy 4 344Cyclades Cyclom-4Y, -8Y, and -16Y asynchronous serial communications devices 345.It Xr cz 4 346Cyclades-Z series multi-port serial adapter device 347.It Xr puc 4 348PCI 349.Dq universal 350communications card driver 351.El 352.Ss Display adapters 353.Bl -tag -width 10n -offset ind -compact 354.It Xr sti 4 355HP Standard Text Interface 356.It Xr tga 4 357DECchip 21030 (TGA) graphics driver 358.It Xr vga 4 359VGA graphics cards 360.El 361.Ss Audio devices 362.Bl -tag -width 10n -offset ind -compact 363.It Xr auacer 4 364Acer Labs I/O Controller Hub integrated AC'97 audio device 365.It Xr auglx 4 366AMD Geode LX CS5536 integrated AC'97 audio device 367.It Xr auich 4 368Intel ICH integrated AC'97 audio device 369.It Xr auixp 4 370ATI SB200/SB300/SB400/SB600 integrated AC'97 audio device 371.It Xr autri 4 372Trident 4DWAVE-DX/NX, SiS 7018, ALi M5451 audio device 373.It Xr auvia 4 374VIA VT82C686A/VT8233/VT8235/VT8237 integrated AC'97 audio device 375.It Xr azalia 4 376generic High Definition Audio device 377.It Xr clcs 4 378Cirrus Logic CS4280/CS4610/CS4615 audio device 379.It Xr clct 4 380Cirrus Logic CS4281 audio device 381.It Xr cmpci 4 382C-Media CMI8338/CMI8738/CMI8768 PCI audio device 383.It Xr eap 4 384Ensoniq AudioPCI audio device 385.It Xr emu 4 386Creative Labs SBLive!, PCI 512, and Audigy audio device 387.It Xr envy 4 388VIA Envy24 audio device 389.It Xr esa 4 390ESS Technology Allegro-1/Maestro-3 family audio device 391.It Xr eso 4 392ESS Technology Solo-1 PCI AudioDrive audio device 393.It Xr fms 4 394Forte Media FM801 audio device 395.It Xr maestro 4 396ESS Maestro 1 and 2 audio device 397.It Xr neo 4 398NeoMagic 256AV/ZX audio device 399.It Xr sv 4 400S3 SonicVibes audio device 401.It Xr yds 4 402Yamaha DS-XG audio device 403.El 404.Ss Time receiver devices 405.Bl -tag -width 10n -offset ind -compact 406.It Xr mbg 4 407Meinberg Funkuhren timedelta sensor 408.El 409.Ss Radio receiver devices 410.Bl -tag -width 10n -offset ind -compact 411.It Xr fms 4 412Forte Media FM801 audio device 413.El 414.Ss Hardware Sensors 415.Bl -tag -width 10n -offset ind -compact 416.It Xr berkwdt 4 417Berkshire Products watchdog timer device 418.It Xr elansc 4 419AMD Elan SC520 System Controller with watchdog timer and GPIO 420.It Xr geodesc 4 421Geode SC1100/SCx200 IAOC watchdog timer device 422.It Xr ichwdt 4 423Intel 6300ESB ICH watchdog timer device 424.It Xr itherm 4 425Intel 3400 temperature sensor 426.It Xr kate 4 427AMD K8 temperature sensor 428.It Xr km 4 429AMD K10 temperature sensor 430.It Xr pchtemp 4 431Intel PCH temperature sensor 432.It Xr pwdog 4 433Quancom PWDOG1 watchdog timer device 434.It Xr viapm 4 435VIA SMBus controller and VIA VT82C686A/VT8231 hardware monitor 436.It Xr wdt 4 437ICS PCI-WDT500/501 watchdog timer device 438.El 439.Ss Miscellaneous devices 440.Bl -tag -width "piixpcib(4)" -offset ind -compact 441.It Xr alipm 4 442Acer Labs M7101 SMBus controller 443.It Xr amas 4 444AMD memory address map 445.It Xr amdiic 4 446AMD-8111 SMBus controller 447.It Xr amdpcib 4 448AMD-8111 series LPC bridge and timecounter 449.It Xr amdpm 4 450AMD-756/766/768/8111 Power Management and SMBus controller 451.It Xr bktr 4 452Brooktree Bt848/849/878/879 453.Tn PCI 454TV tuners and video capture boards 455.It Xr cbb 4 456.Tn PCI 457Yenta compatible 458.Tn CardBus 459bridges 460.It Xr ehci 4 461USB Enhanced Host Controller Interface 462.It Xr gcu 4 463Intel EP80579 Global Configuration Unit 464.It Xr glxpcib 4 465CS5536 PCI-ISA Bridge with timecounter, watchdog timer, and GPIO 466.It Xr gscpcib 4 467National Semiconductor Geode SC1100 PCI-ISA bridge with GPIO 468.It Xr hpb 4 469.Tn HyperTransport Ns \- Ns Tn PCI bridge 470.It Xr ichiic 4 471Intel ICH SMBus controller 472.It Xr nviic 4 473NVIDIA nForce2/3/4 SMBus controller 474.It Xr ohci 4 475USB Open Host Controller Interface 476.It Xr pcib 4 477PCI-ISA bridge 478.It Xr pcic 4 479.Tn PCI 480.Tn PCMCIA 481controllers, including the Cirrus Logic GD6729 482.It Xr piixpcib 4 483Intel PIIX4 ISA bridges 484.It Xr piixpm 4 485Intel PIIX SMBus controller 486.It Xr ppb 4 487.Tn PCI Ns \- Ns Tn PCI bridge 488.It Xr rtsx 4 489Realtek SD card reader 490.It Xr sdhc 4 491SD Host Controller 492.It Xr ssio 4 493National Semiconductor PC87560 Legacy IO 494.It Xr tcpcib 4 495Intel Atom E600 series LPC bridge and watchdog timer 496.It Xr uhci 4 497USB Universal Host Controller Interface 498.It Xr viapm 4 499VIA SMBus controller 500.It Xr virtio 4 501VirtIO support driver 502.El 503.Sh IOCTLS 504If the kernel is compiled with the 505.Va USER_PCICONF 506kernel option, the following 507.Xr ioctl 2 508calls are supported by the 509.Nm 510driver. 511They are defined in the header file 512.In sys/pciio.h . 513.Bl -tag -width Ds 514.It PCIOCREAD Fa "struct pci_io *" 515This 516.Xr ioctl 2 517reads the 518.Tn PCI 519configuration registers specified by the passed-in 520.Va pci_io 521structure. 522The 523.Va pci_io 524structure consists of the following fields: 525.Bl -tag -width pi_width 526.It pi_sel 527A 528.Va pcisel 529structure which specifies the bus, slot and function the user would like to 530query. 531.It pi_reg 532The 533.Tn PCI 534configuration register the user would like to access. 535.It pi_width 536The width, in bytes, of the data the user would like to read. 537This value can be only 4. 538.It pi_data 539The data returned by the kernel. 540.El 541.It PCIOCWRITE Fa "struct pci_io *" 542This 543.Xr ioctl 2 544allows users to write to the 545.Tn PCI 546device specified in the passed-in 547.Va pci_io 548structure. 549The 550.Va pci_io 551structure is described above. 552The limitations on data width described for 553reading registers, above, also apply to writing 554.Tn PCI 555configuration registers. 556.It PCIOCGETROM Fa "struct pci_rom *" 557This 558.Xr ioctl 2 559allows users to read the contents of the 560.Tn PCI 561ROM specified in the passed-in 562.Va pci_rom 563structure. 564The 565.Va pci_rom 566structure consists of the following fields: 567.Bl -tag -width pr_romlen 568.It pr_sel 569A 570.Va pcisel 571structure which specifies the bus, slot and function the user would like to 572query. 573.It pr_romlen 574Size of the buffer to store the contents of the ROM. 575Upon return, this field will contain the size of the ROM 576.It pr_rom 577The address of the buffer to store the contents of the ROM. 578.El 579.Pp 580If the ROM is larger than the specified buffer size, 581.Dv ENOMEM 582will be returned. 583.El 584.Sh FILES 585.Bl -tag -width /dev/pci* -compact 586.It Pa /dev/pci* 587Character device for the 588.Nm 589driver. 590.El 591.Sh SEE ALSO 592.Xr intro 4 , 593.Xr pcidump 8 594.Sh HISTORY 595The machine-independent 596.Tn PCI 597subsystem appeared in 598.Ox 1.2 . 599